tag:blogger.com,1999:blog-12892369557286333522024-03-15T21:09:07.733-04:00MIT Electric Vehicle Team BlogMIT EVThttp://www.blogger.com/profile/17864707477803965972noreply@blogger.comBlogger152125tag:blogger.com,1999:blog-1289236955728633352.post-80270782278183889712020-01-19T17:59:00.002-05:002020-01-19T18:01:15.280-05:00Milan / elEVen Teardown'Twas a bittersweet morning, as several EVT members and alum gathered to bid farewell to the Milan / elEVen project. Having had the car sitting in a covered storage facility since June of 2011, the car was becoming more of a liability than an asset. Those who helped build it had long graduated and moved away, and it has been one of my personal goals to make sure the vehicle was properly recycled before I graduate for the third and last time (fingers crossed for 2021). The car had largely been forgotten as the chain-drive system that connected the Northrop Grumman electric motor to the former-rear differential turned front differential sought to shake the vehicle apart under moderate torque loads.<br />
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With planning taking a few weeks, Jack and I used a tow dolly to secure the front wheels and tow the vehicle out of the garage, through several gates, and back to the N51 garage where it was built.<br />
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<tr><td class="tr-caption" style="text-align: center;">Loaded, secured, and ready for a short tow. Note the layer of dust caked into the vehicle.</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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At N51, Jack grabbed an extra (or 5) sets of hands to help push the vehicle into the bay. The lifts are long gone, but there was an engine hoist, a few sets of jack stands, and a small floor jack to get the work done on Saturday morning. Much of my personal Friday night was spent scraping the MIT and sponsor decals off the vehicle. 8+ years of the parking garage dust and emissions had eroded and pock-marked much of the paint, but the paint below the decals was immaculate. Don't worry, only plastic instruments and a touch of heat were used to remove the vinyl decals.<br />
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<tr><td class="tr-caption" style="text-align: center;">Many of the decals removed along with the hood. Calling it a night a few hours of work and a Beantown burrito (one of our sponsors for the trike project).</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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Saturday morning started with more decal work, removing the 12V battery systems, and ensuring that the high voltage lines to the engine compartment were powerless. Jack and I were joined by Jarrod and two other talented friends. With their help, we were able to get the motor and controller pulled by 11.<br />
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<tr><td class="tr-caption" style="text-align: center;">Accessories box removed. 9:53 AM</td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Motor assembly out and clear of the vehicle. 11:00 AM. Note the chain drive on the viewer left, and the rear differential turned front differential lower right.</td></tr>
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Meanwhile, during this process, three of us were set removing the 12 A123 battery modules that made up the 360V pack. We initially thought that they could not be salvaged, but it turned out that they were at 99% of their nominal voltage. I was quite impressed, and glad that we had salvaged the pack in lieu of letting the scrapyard inherit the liability of disassembling the pack.<br />
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<tr><td class="tr-caption" style="text-align: center;">Battery pack in rear trunk, start of disassembly 9:53 AM.</td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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In regards to the pack, the blowers for high speed charging were removed easily, but the front cross member could not be safely removed without putting the seat down. Further, someone had cut the release mechanism for the seat years ago (for safety?), so it was removed piece-wise. Jarrod led the work in the rear, and we could not have done it without his guidance.<br />
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We were all set to roll it out and to the junkyard by 12:10, in time for their 1:00 pm close time, but they wanted to postpone to Monday, so we set it out to pasture until it's pickup. It did gain quite a bit of suspension height in the process though. <br />
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<tr><td class="tr-caption" style="text-align: center;">Out to pasture. PC: Jack</td></tr>
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Looking forward, let us know if you have any ideas on what to do with the motor and battery pack combo. We're also very short handed though, so undertaking an entire vehicle, especially of the modern vintage, is impossible to do well. Are there any challenges or competitions we can set our sights on to rekindle the team?Johnhttp://www.blogger.com/profile/09668667218626509380noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-2231249149608841602016-10-31T16:29:00.000-04:002016-10-31T16:29:33.160-04:00Update from beginning of the year<br />
For over a month now we have been engaged in training a new class of MIT EVT members on both the Meche and EE subteams. With a new year comes a new focus, as the Meches push to finalize the design for the entire front compartment and the EEs work toward generating a working test bench along with designing our battery management system (BMS) with the FSAE team.<br />
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As usual, we opened up the year with Rango lecturing to the new members about high level concepts.<br />
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<tr><td class="tr-caption" style="text-align: center;">Rango lecturing at first meeting</td></tr>
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As time progressed, our new members became much more proficient in Solidworks as well as some fabrication techniques, with them being able to make progress toward generating a complete design of the front battery mounting structure, gain a better understanding of the volume available to us in the front section of the car with a point cloud, and beginning to use configurations in Solidworks in order to reduce clutter and make changing any cad easier. </div>
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On the EE end, we had our usual meeting about work status and work goals. We currently have a few groups tackling some very big tasks: LV electrical system (think headlights), our custom dashboard for our electrical systems, customized LCD screen for more detailed information, and our new BMS project with MIT's FSAE! We also briefly went over the pros and cons of DC-DC regulators and linear regulators and how we use them in our power distribution network. </div>
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<tr><td class="tr-caption" style="text-align: center;">Meche team meeting</td></tr>
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We have also begun doing weekly exec, Meche, EE, and team meetings in order to get better organization as well as to help everyone remain informed as to how their tasks relate to the everyone else's tasks and plan out how they will attack their problem on Saturday.<br />
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<br />Anonymoushttp://www.blogger.com/profile/03942255097653524574noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-38850421608364125562016-02-13T14:59:00.001-05:002016-02-13T14:59:44.471-05:00Battery Update: Front and Rear Pack Arrangement<div class="separator" style="clear: both; text-align: center;">
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After a long week of CADding and designing, Joey managed to
generate a design for the front and rear packs of our car thanks to input from
the meeting of the minds we had last week. In total this pack will be 58s64p distributed
between the front and rear of the car, giving us a roughly 72kWh pack! The team
had an internal design review this past Saturday with Prof. Dan Frey to look
over everything, see if any considerations were left out, and generate ideas
about wiring and assembly of the packs.</div>
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Tuesday we had a design review with our battery providers
Boston Power. The meeting went well, and they provided us with even more ideas
to consider including crashworthiness, cooling, wiring, and weatherproofing. <o:p></o:p></div>
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Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-3187589520361271782016-02-06T17:04:00.001-05:002016-02-06T17:04:13.835-05:00<h2 style="margin-bottom: 0pt; margin-top: 0pt;">
This week in EVT EE</h2>
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(note: this post was written by a new member without a sense of humor)</div>
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<span style="font-family: Arial; font-size: 14.6667px; font-weight: 400; line-height: 1.38; white-space: pre-wrap;">Preparations to command someone else's magical metal box to use electrons from large energy boxes to spin something.</span></h2>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160130_151240.jpg" height="285" src="https://lh6.googleusercontent.com/qWt9HsRblUAn06Ye_rDzS7lZl-wibhJp5HTF3y8I1hYhRgRXwDE12O453zQ1qvfOHPzvLff6-VMP09SWws4HtAStkh-2s-Fl7IYn-W4flrnVEkjS7QBf5UpLMCDEQxX_zp2XIHiQ" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="385" /></span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">caption: magical metal box; alt-text: Sevcon motor coftroller</span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160130_151952.jpg" height="337" src="https://lh5.googleusercontent.com/xmstv51GE2TPNp8wWHb86zPpcI-9h8VZOvxtii2PReATmbqBEyUCKHuETN5jlYAJPDLN3f23vOdMxgZ7ReTMar7bWd1_Fgs6XgXKHCe7dt1vT3tkGQk8sMVRQxzHn55vfVfXGJr8" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="249" /></span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">{caption: Magical metal box's life support system; alt-text: 12-volt power supply}</span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160130_151728.jpg" height="295" src="https://lh3.googleusercontent.com/AMA3oqTVAMQdT74VcBPXZksqZ3HJ_HQ0mt6GmNgILDlJxUHup-yYoXvhISp76mqD7ksytMZeh-79-yVbHjLVFPIVZo06xY3No_Jr472XQP1sSHSKi4BQdsc8NAwVQmfKpvg-XZ2q" style="border: none; transform: rotate(0rad);" width="222" /></span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">{caption: a smaller version of our large energy boxes; alt-text: The real ones are much nicer, I'm told}</span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160203_203524.jpg" height="393" src="https://lh5.googleusercontent.com/5nyTmX24MU5o2j0eibDJEndZ5yGUSSJChLrRUjPp2W05dIafTG3KaAZJvg7ctFeoZgNoZoSbkELXQP3MFDnQ_8q0TBEHnQRpmFPqcYU3n6AtqUp0p0EHB-jeLS_zFpgfVaFqI7N6" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="294" /></span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">{caption: DC and smaller than what we are using, but it still spins right?; alt-text: The real motor is AC and much larger}</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Some little metal strings go between our squirrel containment facilities and the giant metal box to allow the magical </span><a href="https://en.wikipedia.org/wiki/Squirrel" style="text-decoration: none;"><span style="background-color: transparent; color: #1155cc; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: underline; vertical-align: baseline; white-space: pre-wrap;">squirrel</span></a><span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> inhabitants to talk to each other.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160130_151445.jpg" height="287" src="https://lh3.googleusercontent.com/LCIqGjL156P3BXBjUvra8DHWYTAOHBmUXGOEwENkV18u6_ZvXhtPu-HA53OqlIsw4t18XxnRUo5hz9ObgxZaWutM5iPZ_sSo5tDYPK2JtBOC0OEh8N14XLaGjsXq0dHLFp5NKyfK" style="border: none; transform: rotate(0rad);" width="387" /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">{caption: metal strings; alt-text: wires}</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160130_151537.jpg" height="265" src="https://lh5.googleusercontent.com/05e7pKa6ZmvVMPt0aGm5hdnqe89I_AuW6ONnaZNPQSEiOpqcROY2H2zGVk4C4vMmjDNr82jQk4HUfvLpTjHxKqBR5ZFFI8xwzXIfIq22_h5Kf9PGUEZiMiuEmmWjrzueL2hYkJ0c" style="border: none; transform: rotate(0rad);" width="358" /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">{caption: squirrel containment facility; alt-text: our devboards at work} </span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The metal box really wants to talk to someone, but our squirrels were deemed too unimportant because they don't know the secret password.</span></div>
<b id="docs-internal-guid-eb29fa8b-b89a-f885-2c49-4942e0475d86" style="font-weight: normal;"><br /></b>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">To learn about the metal box, we needed to stare at lines formed by small squares on a glowing rectangle.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Once we decided that the lines failed to contain the information we needed, we pressed large buttons repeatable to create our own lines for another human to interpret.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">That human, a person that works with the creators of the magical metal box, will give us the secret password that their squirrels require.</span></div>
<b style="font-weight: normal;"><br /></b><br />
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">More clear explanation:</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">This week, we worked with the Sevcon Gen4Size10 motor controller.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">It sits on a table with power supplies rather than the actual batteries for testing.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">After working for a while to learn how to use CANopen, and reading through the documentation for the motor controller, we began trying to talk to it using our devboards.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">We found that the motor controller is in master mode, and tries to send out a SYNC message to tell the other CANopen nodes to talk to it.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">After trying to write values to the motor controller to change it's ID, disable the SYNC message, and switch it to slave mode, we found that it was always broadcasting an error message with each attempt.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The error message pointed us to another CANopen index to read, which informed us that we do not have a high enough access level.</span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">In order to change the access level, a password must be provided to the Sevcon.</span></div>
<span style="font-family: Arial; font-size: 14.6667px; vertical-align: baseline; white-space: pre-wrap;">We have sent an email to a representative at Sevcon asking about the password.</span>Nick Arangohttp://www.blogger.com/profile/13531891790978126864noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-88833380649030415132016-02-06T11:32:00.003-05:002016-02-06T11:32:31.912-05:00MechE Battery Party!<div class="MsoNormal">
<span style="font-size: large;">MechE Updates</span></div>
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<br /></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Our primary concern today was designing structures to hold and
support our battery packs in the back of the Opel. By the afternoon, literally
everyone on the MechE team was engrossed in this task. We were even honored to
have Sir Nicholas Arango from the EE team come and help us generate ideas.<o:p></o:p></span></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Being a team with a small car and big ambitions, one of our biggest
design constraints in our Opel project is that we have 464 individual battery
packs to distribute between what used to be the engine compartment and the
space which used to house the back subframe and gas tank. Each group of cells
has to be housed such that none of the cells are at risk of being ruptured in
the case of a collision. At the same time, the front and back compartments each
require a cooling system for these cells, and in addition to our subframe,
motor, and transmission in the rear compartment, each compartment will
eventually house one or more modules such as our motor controller or our
battery controller. Our design constraints, therefore, are difficult to work
with, and it took hours narrowing down what path we should take.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqc9_efFEXXoaODsgCBbgxKd9IiDooJUAK0bopT0pfMI5yqzP43pWUAvQxi-bEgNndDHAeevubdXDm3nXEvHOErenhNzbkiBPKwOYOpEPNFIft3EUK9MINerKDbTvtgwbTkK3LgL0NXZ3H/s1600/1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqc9_efFEXXoaODsgCBbgxKd9IiDooJUAK0bopT0pfMI5yqzP43pWUAvQxi-bEgNndDHAeevubdXDm3nXEvHOErenhNzbkiBPKwOYOpEPNFIft3EUK9MINerKDbTvtgwbTkK3LgL0NXZ3H/s320/1.jpg" width="306" /></a></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Alex
helping lead discussion. Alex and Joey, who had done a great deal of work designing
our battery supports in weeks past, proved invaluable.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqIml1-IYnNSQ0nmHU3rgJhVlIwlQTnoQP-n-AfPFC6kdDzueZe2uEZkXasbHpV0DKbV8l_1cYk-oxdP4pY3UQcJYZqFTjwsetfxoe50rBKIsZiWs5ZLuFZW_El07xAyID1istrUfBgEkv/s1600/2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="271" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqIml1-IYnNSQ0nmHU3rgJhVlIwlQTnoQP-n-AfPFC6kdDzueZe2uEZkXasbHpV0DKbV8l_1cYk-oxdP4pY3UQcJYZqFTjwsetfxoe50rBKIsZiWs5ZLuFZW_El07xAyID1istrUfBgEkv/s320/2.jpg" width="320" /></a></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Leave it
to Rango to bring out the best in people.<o:p></o:p></span></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;"><br /></span></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">After hours of work, first in small subteams and then as a whole,
we were able to come up with a modular design for our supports which could be
implemented universally across virtually any permutation of battery placement.
We designated two teams—one to generate plausible battery placements with batteries
oriented towards the back of the vehicle, another with cells toward the
passenger side—to create a library of battery placements to choose from. This
coming week, we will select the design that seems most feasible, stable, and
space-conscious so we can start building the support frame itself.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5T3yvIH66Pg78DsIbft9vUTobrmdspMNAaj14whXH1MR06N4X2HqcHQh-SjA25ofBqLGnydSXidXgPBN2eKCYSfPrUvTKwR-8peMkFr7eFjCqNoT3-_rqLXuv6IrE2AVWiwhtRNifgs_s/s1600/3.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="195" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5T3yvIH66Pg78DsIbft9vUTobrmdspMNAaj14whXH1MR06N4X2HqcHQh-SjA25ofBqLGnydSXidXgPBN2eKCYSfPrUvTKwR-8peMkFr7eFjCqNoT3-_rqLXuv6IrE2AVWiwhtRNifgs_s/s320/3.png" width="320" /></a></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">A set of
one of many sizes of battery module CADded by Joey<o:p></o:p></span></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">In addition to this, Jacob, Ryan, and Olivia worked with Jimmy from
the EE team to decide how and where to mount potentiometers to the accelerator
and brake pedals in the Opel, and Joey created comprehensive CAD of the structural
members of the Opel frame.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDujj-TbdcxkXui9pKN22YVvVIjTNBYHv6hCyGoKmGeIhYekS8-pwOxAZWT92NwAQHppl8P91Qs9OfdNZ0NLlnABGxdfQOySzoxEdgOMwn8WOMmG4J8-oGBXmFeuZstmeZHdNNaKkc1rkh/s1600/4.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="187" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDujj-TbdcxkXui9pKN22YVvVIjTNBYHv6hCyGoKmGeIhYekS8-pwOxAZWT92NwAQHppl8P91Qs9OfdNZ0NLlnABGxdfQOySzoxEdgOMwn8WOMmG4J8-oGBXmFeuZstmeZHdNNaKkc1rkh/s320/4.png" width="320" /></a></div>
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<span style="font-family: "Times New Roman",serif; font-size: 12.0pt; line-height: 107%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Joey’s
CAD of the structural components of the Opel frame<o:p></o:p></span></div>
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Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-3876695125187204222016-01-28T18:29:00.004-05:002016-01-28T18:29:51.709-05:00<h2 style="margin-bottom: 0pt; margin-top: 0pt;">
EE Team Updates</h2>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><br /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Today the EE team converged once again to check in regarding what each of us were working on, if we were stuck on issues, and finally, discuss the very important (and safety critical) shutdown sequence of the car.</span></div>
<b id="docs-internal-guid-6732798d-8a91-4629-6435-8aa2a6f92dd4" style="font-weight: normal;"><br /></b>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">First, Rango discussed a sizing issue that was realized after our newly printed PCB was put into our lovely-looking, insulated PCB enclosure:</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="IMG_20160126_202156.jpg" height="384" src="https://lh6.googleusercontent.com/Pcg3-hYh5sgos8cNCp4z1bmkKU80-Q0cIumbKYKVWA_I5sIG-hbdi3L437mnmvlB_SxrCdIDgShGFHlTgAKXaU9BB_34QRyCphHffs6V1WNijMFIcF5dcfG-mm93bKhcvO1XMDs8" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="288" /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The EE team apprised of a redesign: our first printed PCBs had not accounted for the size of the lips/flange of the adaptor connecting the PCB to peripherals, CAN bus, and power lines. As such, the cover to the insulating box surrounding the PCB does not lie flush to the PCB. Unhappiness.</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">We then went through in detail exactly what sequence of events needs to happen the moment the driver turns the key to “off” (assuming no critical errors initiating or during the shutdown sequence - we’ll handle that next Tuesday). In our discussion, we took into account safety checks, possible design improvements to our sequence, and the conditions necessary to safely turn off the vehicle. The following is the Opel’s democratically-decided shutdown protocol:</span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="shutdown-sequence_1.jpg" height="392" src="https://lh6.googleusercontent.com/3Ks1KG5FxoEJ1wzxsJNBMliR0vkZ5xHOX9GXfV5yLBAxckWhYRXxkQt6L4NH5ixP1LzZkHSxJAx0gfG4NCxsWgiSCjA8VWrY8pXkvQsH6hBSraiXDroQud1oAnF5xChhLuRIBsTc" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="391" /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The team’s white board design of the checks and action sequence that the car’s driving state machine ought to undergo in order for the car to safely shutdown.</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Our team checked in at the beginning of the meeting to discuss their current projects, their short-term goals, and the obstacles that they need to overcome. </span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Rebecca continued her work on the User Interface Module. Specifically, she is working on getting test examples on the SPI protocol up and running, and beginning to write the code for the User Interface.</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Toby is continuing his work on the Power Distribution Module. He is going to add connectors to his computer and experiment with the gauges so that he knows he is able to communicate with them using I2C. </span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Jonathan located a handful of 2-twisted-wires that we will use to wire the CAN bus. He also started working on matching up pins in each module’s external peripheral/CAN bus connector.</span></div>
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<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Skanda/Bryson</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The Skanda and Bryson duo are writing unit tests for the Driver Interface. Certain functions in their driver utility code currently do not have tests written for them, so they will continue to work on that in the near future and work on implementing the car initialization sequence.</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Hugo - electric vacuum pump to buy; pricey, but had all the comments</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Hugo was looking for more improved parts to use in our braking system. He found an electric vacuum pump that satisfies all of our requirements and that was more efficient than our previous pump. Even though the part is pricey, he felt that its functionality was worth the cost. </span></div>
<b style="font-weight: normal;"><br /></b>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Jordan continued working on designing the circuits used to control the driver interface relays.</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Helmuth managed to talk to the motor controller (!), getting a motor interface communication example using CANOpen up and running!</span></div>
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<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">The team is busily working on finishing the OpelGT system modules!</span></div>
Nick Arangohttp://www.blogger.com/profile/13531891790978126864noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-80912269270121340102016-01-28T18:27:00.003-05:002016-01-28T18:28:14.709-05:00<h2 style="margin-bottom: 0pt; margin-top: 0pt;">
Electrical Architecture Finalized</h2>
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<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><br /></span></div>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">After a few months of design, we finalized the electrical system architecture of the electric Opel GT. Our design philosophy was to create small, simple modules that all interface over a shared CAN bus and tie the Motor Controller, BMS, and charger together. The diagram shows the architecture including the power sources for the modules. Signals are shown with thin lines and power connections are shown in bold. This diagram is abbreviated, but shows the significant details for the turn-on and turn-off of the vehicle. Six of the modules in the car are being designed in house, while three others are commercial products. </span></div>
<b id="docs-internal-guid-42ecf75f-8a8f-7a52-ab68-590556cd4e83" style="font-weight: normal;"><br /></b>
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<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img alt="evt arch.png" height="385" src="https://lh5.googleusercontent.com/BL21kTFmy-IXph2BXMBJzAmw4jIC4GXaV-wtg16FW0fndOJTGdSETmqdHWvOnPQW22WaQ4oaY0lUXLgOlBMJ3JwwwcR1XGGKIgYDjyCqIYLBKAzOcgLbpRLuqZgx5pgtHSrVUjLV" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="624" /></span></div>
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<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.6667px; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">In-House Modules:</span></h3>
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<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Driver Interface: Acts as interface between user controls and their associated peripherals (ignition, lights, drive mode, etc). Controls the state of the vehicle.</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Throttle Interface: Reports throttle and brake pedal positions and ensures accurate readings with redundant measurements.</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">User Interface: Responsible for reporting status of the vehicle to the user through gauges, indicator lights, and displays. Also responsible for logging vehicle state.</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Wheel Velocity Sensor: Reads vehicle velocity from hub sensors and broadcasts to the vehicle.</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Motor Interfaces: Acts as the interface between our modules’ CAN bus and the sevcon CANOpen bus. Also generates control signals for motor controller.</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Low Voltage Detection System: Monitors low voltage power buses and backup power sources</span></div>
</li>
</ul>
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.6667px; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><b>Off the Shelf Modules:</b></span></div>
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<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.6667px; font-style: normal; font-variant: normal; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Tritium IQ Battery Management System</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Sevcon Gen4 Size 10 Motor Controller</span></div>
</li>
<li dir="ltr" style="background-color: transparent; color: black; font-family: Arial; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; list-style-type: disc; text-decoration: none; vertical-align: baseline;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Brusa NLG513 Charger</span></div>
</li>
</ul>
<b style="font-weight: normal;"><br /></b>
<br />
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">All of the modules will reside in small aluminum extruded enclosures. All the PCB’s are designed from a common template to keep input/output connectors the same, allowing us to design only one faceplate. Each module will have one 8-pin CAN/Power connecter, one 23-pin auxiliary connector, one 6-pin programming header, and breakout for up to 8 status LEDs. An NXP LPC11C14 microcontroller is the heart of each module, powered off a shared 12V power bus.</span></div>
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<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><img height="345" src="https://lh5.googleusercontent.com/BHcYRcjR3W2ydEocHvQ_4R3Ce_rtuQf2lBKn95hVUndDROytXzEZtxqBiwiAl36jRAzpkksjFRX9f6iUIE_9zxp6I8sA7GYNFB6CZcRvZD7o_8LE8PUlMCbDnIh2eAdlt7gDretY" style="-webkit-transform: rotate(0.00rad); border: none; transform: rotate(0.00rad);" width="434" /></span></div>
<b style="font-weight: normal;"><br /></b>
<br />
<div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt;">
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">A prototype of the Wheel Velocity Sensor module was completed today. While the 9 pin can connector was not available from digikey, all other components have been assembled and tested. </span><br />
<span style="background-color: transparent; color: black; font-family: "arial"; font-size: 14.666666666666666px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"><br /></span></div>
<span style="font-family: "arial"; font-size: 14.6667px; vertical-align: baseline; white-space: pre-wrap;">We are excited to have our first module complete and to see through the completion of several more over the next few weeks. We hope to have our custom designed hardware for all of the modules in hand within the next two months, working in a prototype state on our testbench shortly after.</span>Nick Arangohttp://www.blogger.com/profile/13531891790978126864noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-54776219993847263962016-01-20T20:11:00.003-05:002016-01-20T20:14:30.435-05:00EE Meeting: Car Startup Sequence<span style="font-family: inherit;">On Tuesday, the EE subteam gathered to discuss the Opel’s startup sequence. We hammered out a specification detailing all the steps between initial turn of the key to Motor Controller enable. The discussion revolved around several themes:</span><br />
<ul class="Apple-dash-list" style="line-height: 16px;">
<li><span style="font-family: inherit;">In what ways should the Opel’s startup sequence be similar to the startup sequence of a conventional gas-powered car?</span></li>
</ul>
<ul class="Apple-dash-list" style="line-height: 16px;">
<li><span style="font-family: inherit;">How robust should each electrical module be to failures in the other modules?</span></li>
</ul>
<ul class="Apple-dash-list" style="line-height: 16px;">
<li><span style="font-family: inherit;">In the case of a failure, how much decision-making responsibility should the driver be given? Should the driver be warned with an indicator on the UI? Should the car be allowed to start up if the failure occurs in a nonessential module?</span></li>
</ul>
<ul class="Apple-dash-list" style="line-height: 16px;">
<li><span style="font-family: inherit;">Which systems should turn on which other systems? In what order? How do we check that the required systems are functioning correctly?</span></li>
</ul>
<ul class="Apple-dash-list" style="line-height: 16px;">
<li><span style="font-family: inherit;">Since the DI’s codebase is already very large, the team expects an increasing probability of bugs as the new startup sequence is coded into the DI state machine. What steps should be taken to combat this?</span></li>
</ul>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcSqXQHijIitUjur0jynyJL4OJUSn2bm6OwGAvJKfFkLNItp09C13jpPN08m5ZDfVXCHkkEbRQUKmpdh_yroVPxT5vfBQQaPEh-yaHqy9XVU8xMtfS3bdRDQuK_688otzmV2fN1jjEdUg/s1600/car-start-sequence-pseudocode.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcSqXQHijIitUjur0jynyJL4OJUSn2bm6OwGAvJKfFkLNItp09C13jpPN08m5ZDfVXCHkkEbRQUKmpdh_yroVPxT5vfBQQaPEh-yaHqy9XVU8xMtfS3bdRDQuK_688otzmV2fN1jjEdUg/s320/car-start-sequence-pseudocode.jpg" width="225" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Startup sequence</td></tr>
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<tr><td style="text-align: center;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBGfAGx3atpifd1sTvoPQBK_ycgV2iNheW8u1Wcy1lWBfX6CGHOWDrTxM3msrcSmZWi9crynKatS558qUYfkoZZG7qax1PkkG9f0E56mhKilxFVwk6BN8WGB1ZuU4DwNIBNVzgvtVw-G8/s320/car-start-sequence-pseudocode-2.jpg" style="margin-left: auto; margin-right: auto;" width="225" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Clutch and turnkey</td></tr>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8ELKYhRuf8v5w5h9-B_ePJuXmbSFC0uW_FWFL60SNOpHaOLZ2PVJKLV8WPdvvOoGvnG5Jufu57Vo4lAK-WdFrOp4qaxRnXYT4UknSWexgFybJcNTv4e9AQSLxxm-NJ7XhXtRPEjAGUsA/s1600/old-di-transition-diagram.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8ELKYhRuf8v5w5h9-B_ePJuXmbSFC0uW_FWFL60SNOpHaOLZ2PVJKLV8WPdvvOoGvnG5Jufu57Vo4lAK-WdFrOp4qaxRnXYT4UknSWexgFybJcNTv4e9AQSLxxm-NJ7XhXtRPEjAGUsA/s320/old-di-transition-diagram.jpg" width="225" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Old DI state transition diagram (to be updated with changes to startup sequence)</td></tr>
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Anonymoushttp://www.blogger.com/profile/06784838657336177920noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-18309740553495600672016-01-18T13:03:00.000-05:002016-01-19T13:03:54.960-05:00MechE: Playoff Saturday!<div class="separator" style="clear: both; text-align: left;">
A quick turnaround from the all-nighter on Thursday, and the gang was back where we left off! We needed to take some ride height and suspension measurements on faculty advisor, Professor Dan Frey's original Opel, so he invited us over to his house to inspect the Opel as well as watch the Pat's Playoff game against the chiefs. </div>
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The squad made it in early to make up for the time, with Ryan getting right to CAD practice on the 2D transmission mounting parts.</div>
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Alex and Alberto continued cutting the necessary support members for the rear suspension structure, according to the CAD that we began to finalize on Thursday night.</div>
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Crazy Jake continued cranking away as the team librarian, reading up on some serious suspension research in order to make sure that we would take the correct measurements at Dan's house.<br />
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The frame is slowly beginning to take shape, and we're hoping to install the motor/transmission assembly soon. EVT legend John Kongoletos was back to offer some mentoring to the young welders!</div>
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Jarrod continued working through the CAD and relaying the measurements to the weld team...in addition to getting everyone setup and organized with Solidworks EPDM on their personal laptops. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX_c1tfyxdSWrNXIXVVdyCSlxlT_UpDLnP0ZUkXCvBK4wIhGtAop3qRSfw7owF9SNw9rDtJuG1O-mES86xnQT_veAZb7OuFxzE8Zo3vthMQaMBE8Ajfv9K5z0ctHzstI0PK8oa3j2I-Afp/s1600/IMG_0467.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX_c1tfyxdSWrNXIXVVdyCSlxlT_UpDLnP0ZUkXCvBK4wIhGtAop3qRSfw7owF9SNw9rDtJuG1O-mES86xnQT_veAZb7OuFxzE8Zo3vthMQaMBE8Ajfv9K5z0ctHzstI0PK8oa3j2I-Afp/s320/IMG_0467.JPG" width="320" /></a></div>
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After lunch, the MechE subteams met with their EE team counterparts to discuss the integrated tasks such as enclosures and throttle setup. Then we were done for the day, packing it up and heading to Dan's house.</div>
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The trip is never complete without checking out Dan's chicken coop and holding the hens!</div>
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The young members got a chance to meet Dan and we had a good time taking a break from welding to watch the game. At least most of us were happy that the Pats won!</div>
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At halftime we made it out to Dan's garage, where he gave us the rundown on all of his vehicles and current car projects....<br />
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And Crazy Jake got down to take all of the necessary Opel measurements to take back to the shop. Overall it was a successful & productive day, and a fun time hanging out with Dan. Now we just have to finish up the electric Opel for him! Two more weeks of IAP, let's go!</div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-66037941866801587582016-01-15T18:02:00.000-05:002016-01-15T18:26:31.529-05:00MechE Marathon Thursday is back! <div class="separator" style="clear: both; text-align: left;">
The MechE Team tradition of staying up late on Thursday nights was reinstated yesterday! With much work to be done, nearly the entire team made it out for the "other 9 to 5" Marathon Thursday work party!</div>
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After the weekly team organizational meeting, it was all hands on deck for the MechE crew. The remaining Miata control arm mounting components of the original subframe were ground down and sanded, with the necessary jigs and fixtures put in place to prepare for welding. </div>
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A combined effort of welding and CAD-ing at the same time brought everything together, and it's looking like the new subframe geometry will fit nicely in the rear of the car! </div>
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Alex and Z were able to design the lower deck for supporting the batteries, and AA was able to weld it all together.<br />
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The frame still needs further development and construction, but the dimensions have now been confirmed and everything appears to be aligned correctly.</div>
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Saturday's meeting will focus on incorporating and mounting the drivetrain components, and proceeding to attach the entire assembly to the scrap Opel frame. Still much work to be done, but we're hoping to be starting the installation process on the black Opel next week!</div>
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After a long work night, there's nothing better than the routine trip to Beantown right before it closes at 4AM! </div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-91254039747765002812016-01-13T22:56:00.002-05:002016-01-14T20:10:35.340-05:00EE Module Design Review: Wheel Velocity SensorOn Tuesday, all the EE's gathered for the first module design review.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidGu1dmB6m3g5W2EnQbvaahSh52jIx8v7ZGdp4moPqXRYhaq17sB3BOcDSImOQpolGNwWDni9JleEn8lO6QQHYK7t7em9O9jaA9eQt8PlCbZOlwTBpSwaXjAdgRKKNx99MXU_we1Die68/s1600/Photo+Jan+12%252C+9+51+06+PM.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidGu1dmB6m3g5W2EnQbvaahSh52jIx8v7ZGdp4moPqXRYhaq17sB3BOcDSImOQpolGNwWDni9JleEn8lO6QQHYK7t7em9O9jaA9eQt8PlCbZOlwTBpSwaXjAdgRKKNx99MXU_we1Die68/s320/Photo+Jan+12%252C+9+51+06+PM.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Electronics architecture (depicted on whiteboard)</td></tr>
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The Opel's electronics architecture is designed to be modular. It consists of a number of modules where each module is designated a specific high level function, such as logging or sensing. The Opel's Vehicle Controller Area Network (VCAN) bus facilitates communication of data between the modules. Over the past semester, members of the EE crew have been working out the implementation details of their assigned modules. While each module is derived from the same generic design, members must specify the code and any auxiliary electronics required for their specific module.<br />
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<tr><td class="tr-caption" style="text-align: center;">Dev board, which shows the generic PCB layout</td></tr>
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The module design review on Tuesday was for the Wheel Velocity Sensor (WVS). The purpose of the WVS is to measure wheel velocity and relay this information back to the Driver Interface (DI) module over VCAN. Separate WVS modules exist for the right and left wheels. Should the car enter a prolonged drift, the DI would be able to sense the condition from WVS messages and respond appropriately.<br />
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The design review began with an overview of the WVS operating principle. Essentially, the WVS measures motor speed from the frequency of the sinusoidal back-EMF waveform. Designers Allison (sophomore) and Helmuth (freshman) took us on a deep dive into the underlying analog signal conditioner schematic. The circuit uses a comparator with added hysteresis to transform the motor back-EMF waveform into a square wave. On the embedded end, the LPC microcontroller computes the wheel velocity from pulse period and broadcasts this data over VCAN.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOf-YoZd4SSj_UuU2w-jRjtF9Qma9xXore3LEluriuQtiyNdn7vhRxTt0HSlEiR57Dg9EZ9Ph87Ajab0Ho3TC47RGISUm0etpCOc0wxwm0o91_G0VMY4maGYr2_GwDKNiwO5DR-p5Y-6A/s1600/wheel-velocity-circuit.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="145" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOf-YoZd4SSj_UuU2w-jRjtF9Qma9xXore3LEluriuQtiyNdn7vhRxTt0HSlEiR57Dg9EZ9Ph87Ajab0Ho3TC47RGISUm0etpCOc0wxwm0o91_G0VMY4maGYr2_GwDKNiwO5DR-p5Y-6A/s320/wheel-velocity-circuit.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">WVS schematic</td></tr>
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Next, the designers walked us through the PCB layout. The WVS specific analog circuitry is located in the middle of the right half plane of the PCB model below.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2nbAX-lWQLDYCkNG6GNgmJGe3QSIFYPiqUbRyQOdIKAqLrOEwW2n5vlShhjsri4JiiUK_R39UrIyuSQb84FztBqFSFmweyrTxz8VfP080FWuINGG1qXkF-OTQDetM3dMWbYMXPhsjHc8/s1600/velocity_sensor_board.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="196" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2nbAX-lWQLDYCkNG6GNgmJGe3QSIFYPiqUbRyQOdIKAqLrOEwW2n5vlShhjsri4JiiUK_R39UrIyuSQb84FztBqFSFmweyrTxz8VfP080FWuINGG1qXkF-OTQDetM3dMWbYMXPhsjHc8/s320/velocity_sensor_board.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Wheel Velocity Sensor PCB</td></tr>
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The design review was very successful. Designers did a great job presenting, and members were able to walk away with a better understanding of the WVS's inner workings. We were able to evaluate design choices, change component values, and catch typos. Among other things, we decided that 12V logic would <i>probably</i> not be suitable for our 5V tolerant microcontrollers.Anonymoushttp://www.blogger.com/profile/06784838657336177920noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-66002732592798624882016-01-13T17:54:00.000-05:002016-01-19T13:27:00.633-05:00Miata Modifications continued<div class="separator" style="clear: both; text-align: center;">
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Tuesday night. Still planning on Marathon Thursday later this week, but it's been marathon every night so far. Gotta make the most of IAP!<br />
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Crazy Jake is back in action, reading up on some new suspension books from the library.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyC29zXozPmzKK3qtOO5OIMcL4GMKn5n58NwcHDUNIH1uxm4ZDzUzAgdaJ8pjmlzPd0nZndt_8pfA6V_K5-DVi_2vo3kPV-vNr6yQDPbST1x-6rQ9UhJIxeZQQwiqZSyJJ-C0sWdmWK-Ly/s1600/IMG_0408.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyC29zXozPmzKK3qtOO5OIMcL4GMKn5n58NwcHDUNIH1uxm4ZDzUzAgdaJ8pjmlzPd0nZndt_8pfA6V_K5-DVi_2vo3kPV-vNr6yQDPbST1x-6rQ9UhJIxeZQQwiqZSyJJ-C0sWdmWK-Ly/s320/IMG_0408.JPG" width="240" /></a></div>
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Jarrod and Ryan looking at the CAD, and working through the new assemblies. After taking some measurements on the actual Opel, we are trying to get the solidworks models for the subframe assembly to be as true to form as possible. </div>
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After some investigation, they realized we need to lose about four inches in width between the wheels to get the geometry in a desirable configuration. Although the original miata subframe fit nicely between the Opel frame members, we're going to need to chop it up a bit.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLO3hOj0_6cwqc9dtyLyQrSX3GzGTnF2tHX6_eIWHuETONDYkrYe011gEz2ZwXo-fkAgsUu9oWSPQR2k3kkgTCE-yIVYFB_tsyA2JKB1WWW3UZVEfdKO7s355kbJTsn0CqZM8jB7Xl96EZ/s1600/IMG_0357+-+Copy.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLO3hOj0_6cwqc9dtyLyQrSX3GzGTnF2tHX6_eIWHuETONDYkrYe011gEz2ZwXo-fkAgsUu9oWSPQR2k3kkgTCE-yIVYFB_tsyA2JKB1WWW3UZVEfdKO7s355kbJTsn0CqZM8jB7Xl96EZ/s320/IMG_0357+-+Copy.JPG" width="320" /></a></div>
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All hands on deck in Dlab! We're still working there, where we have ventilation for the angle grinder usage, and we can help out our students taking our AIBD course this IAP.</div>
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We cut down the members to give sufficient clearance, and began work on setting up a jig to hold everything together in the proper orientation. We hope to get all the fixtures in place so that we can begin welding on Thursday.<br />
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-65248915043865163872016-01-11T14:51:00.000-05:002016-01-19T13:21:21.243-05:00Suspension: Drivetrain Incorporation<div class="separator" style="clear: both; text-align: left;">
Monday night, and we keep rolling through the week. The eGear Transmission unit is a bit too wide to fit cleanly through the top of the original Miata subframe, so Ryan and Jarrod worked on cutting it up to provide the necessary clearance.</div>
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<br />We needed to remove about an inch from the interior support members on each side. Ryan is quickly becoming proficient in using the angle grinder.<br />
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Big thanks to Dlab, giving us some space to work with all of the necessary safety protection.</div>
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The motor and transmission are now bolted together. The transmission fits down the middle, with the motor temporarily supported on the top surface of the subframe. We are still considering how to clean up the subframe and how the final structure will look. For now, it just has the exposed open tube.</div>
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Of course we can never leave well enough alone, and Jack, Nate, and Jarrod ended up having a motor+transmission deadlifting contest. No need for an engine hoist!</div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-10517869395049849552016-01-10T13:13:00.000-05:002016-01-19T13:13:31.574-05:00Suspension: Miata Modification<div class="separator" style="clear: both; text-align: left;">
First Saturday work day of IAP for the MechE team! Plenty of new work to do now that we have the new parts. We're hoping that the Miata suspension geometry provides an adaptable platform and valuable reference for developing our independent Opel suspension.</div>
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Colonel CAD Alberto was at it immediately, focusing on generating Solidworks models for the Miata subframe structure, and then the control arms and knuckle.</div>
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Alex and Z went to town on battery duty, starting to work with the subframe structure team to design the battery support structure in the rear of the car. We hope to be integrating the battery mounting CAD into the rear subframe models soon. </div>
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Ryan and Olivia are working on mounting the Miata/Suspension+Motor+Transmission subframe into the Opel frame. Testing is taking place on the old rear half of the white Opel that we still have in the back room. </div>
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It is still unclear if we will need to cut away the wheelwell/frame in any places in order to allow clearance for the upper control arm in the new independent suspension layout. The previous design with the straight axle had no problems, but Ryan and Olivia cleared out some space with the angle grinder so that we could take the necessary measurements.<br />
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The goal is to get rid of the white Opel shell in the very near future. The solidworks models are coming together, and we hope to have an integrated subframe prototype sometime next week.</div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-51823136459823333152016-01-09T14:06:00.000-05:002016-01-12T14:14:51.679-05:00MechE Junkyard trip! New Suspension Strategy<div class="separator" style="clear: both; text-align: left;">
After some thought and research, we're going to design our suspension and drivetrain system around the miata rear wheel drive subframe assembly. The size and shape made it a good option for incorporating into the Opel, so we decided we would just hunt down an old rear assembly for reference to get us started.</div>
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Friday night we had an informal meeting with some new members to talk suspension over dinner. We talked through some general suspension info and theory, and the plans moving forward. </div>
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With the new plans, we wanted to get the necessary parts in time for the Saturday work day meeting, so we were up at sunrise and took the truck out hunting. GAW Used Auto Parts in Walpole turned out to be a gold mine, with acres of cars to dig through.<br />
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There was a huge section of classic cars, and we even managed to find a couple of Opels!<br />
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There were a couple miatas to choose from, and we managed to unearth a rear suspension subframe. Everything except the set of lower control arms. It was in slightly rough shape, but definitely fine for modeling the geometry and fitting it to the Opel.</div>
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Nothing but fun dragging it back across the lot through the mud!</div>
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It was still early in the morning, and we made it back with plenty of time before the EVT meeting. Time to tear it down and clean it up!</div>
<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-57127640321123412722015-12-28T12:00:00.000-05:002015-12-29T21:21:47.466-05:00New Motorcycle Plans<div class="separator" style="clear: both; text-align: center;">
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Following the long-awaited return of former EVT legend,
Lennon Rodgers, the team has a revived interest in the electric motorcycle
scene! Lennon led the team’s efforts at
the Isle of Man TTZero race back in 2011, where EVT’s converted BMW bike
received the best time out of all the first year teams.<o:p></o:p></div>
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dYdtAvnScslUFGlgs3u1KcORqVj1ip/vndpULtO9eVyeiRXXOwgUJeuMBy8yfyosKO41uLKHcCqVLdioTre5jU1th8UxaCD8KcqiDQR6CpbaAbATS7q9BQPbwhbcxWMRgEHMT4miHtk7sBWvUj8VCk/YmgW1ZY6D6xTPg+BJuqq+0x5chzM+VBhFU7k1ZOiF/NcDL+MoSe4IXPl7tbdMnLPFfMzyuohmIv27BAPsoWAH4iIBJJ8yfQVyH7R+mT4251QhbFptBzLxBYn1IirV9qPGOpUD3nDQPEsZNcczEnvP7+FfV2owXs4MCtX4Jmu6QJjw0H9/WhjeGw+AFH8I4DfxbZbSlgDqfZRf5nO/kNas4wHD+H/6zfesQIPVKOwh3hgdBy9uT3KKI45S3Zs5pbIr3BuAYnE62rbFfxnsp/wAz7Xksmmf+EWLVp+sxeTEiQLVtRo4g5HaST3Scomd4IoziHFMfig+cthrCW1uMiKwJskwWUaNeAEkiQIG1AtYw+FeGQF7F6y/bYnr7LCc9gLCqdJGYbMusrrsoxXH6mblJijGreSBcnUAiRuGAKnbYggiibfAcRcti51Q6tgSLhdFWAYOrMO6mEJjntDJctovWB7wTRkDSnYQZeszOZ33AFVm8zA5c+YIxykHMsgxmTlBga8xFS1FblJtjK90VfKWF2yQu5VmcAnZS9tGWT50Bf6P4gWBf6i4LQ0a4YIzZiJ01C7CTpPOutdC+JYXFYc4RbZTNal5M53IAuMD3g5SPCNoqfo/xV7t29gMWqRkNtQq5QQohhHipDDyNHbi6+f7mPfknucawAUqVYfs0FkMkd1N+OcKbDYi5YfU22gE6ZlOqMPNSD56UPdw0p1oyzmyZM3a9nNmynly38qycfB0p+SfhvWkZLKPHvMo3Pi2wHrTn/Db9i31r3EQSAEuEkvJgjKAdtz5VVsMbgYEMynbQx6R3UTxFLi5WdyxYTDMWIWeyTO07gfrUpRS4NXlyWqlVcFzwyXcd1aq6qizmUyO0NifxgLMDx17xdeHcJt4ZMqESfaYnViPoPCuV8G4iwEBspBBQnYHup1i1xuMlEdUULLIXylh3547S6jSR41wdZ02bqGoqW31+ZeWMdKnDh8/J/wCy047j1i2SrXlkbgdojzCgmlt7jmFb+OJ8VYD6VTsX0ZxVoa2GIHNIcf8AZJ+VKtdhqe4bjzHKhfZWOG0m7/x/4cyd8HTeHXQf9K4tzwSmy3dO2I+dcis4e7uFZYjUkLE7ak1ZeG9K79js3mW6sxEy6/8AUND6msM/2VL70N/x2Gmi928Na3kz++Vb3bc97Dw0pRhOO23Ga2jXCe4Ewe4xtR+GvXbntI1sd1cC6XLfDLD8LaSeYom/jVQbE0G9l4hDHiZPyrW1hm99s3pH966YdLnfyHpQJiukZU+zpUljpFbI2LHuWT9KlfhNpjJRSfET8jU6YVV2AHkK6o9G63ZOkDzEH2Z8hW0XD/DjzrAe5P7FTdY3ia+e1o6NRoxjfU+VS20aJIr1t43yj61644bc/OqU9tw1ELsvPT1qMEn2SAPH+9D4l7EwQSfM1FdxYUdldPKnu+ES5hpuKu7ivW7qNsJpfZtl9SIHlR9jDT3geP6VTjpW7CMrPXUY6Io9ae8AL4fDhiRm6y9cY/hQW0Unw2OveaV28GB7378qRdP+Mtaw6WbJPW3DczmNEtm2UI5+0LrdxEV1/Z9SzUZ5lqjRSOmPSE4vENcYwiytsdyzv3mTSa1dQ6DQdx0nxJpeQTRWBZRcXs545E5ZgHnrA2r6PVvsQopKkPcJx3EJZaxbvZLZaSFMHUQQrbgHwpcLI/Evz/SjuOccW4tq2uHVDazlmBLly+WM06CAoEUpuIcobYNEfSn3JcNBoXge2uLXxaS0l8KEzQQxB7UjQt7MBmHZgwY1gRFwjAxiLfXLmQsQwIzTnUoNOerA78hqKU4VCRJMacufiaNw3EWt9kBWHiIOvlvVxyW9yXH0XS66qAzt1UOjAu4EFAyhSlvQQrycjLLMTGoFUvE4YXsQUwv+Z1jFkCrl9okkZTGUD4ARrTLh/G0W+t27bFyCSwbK8yDr2hqQTPpuKYY7prdJPU5bQJ3G51nXQAnxMnxrd6WuTJak+APhgxHD7lu9dtsgFzsgkS0DtrlBkAqdzpRnFelv3jGJfsW+qZY1Zs2YpJBKgRtpE7Uiv46/f/yy5cTMQAJ7zAE0dw3heUz1hVu9QJ9M36VCW9LgTguZcmnSDCXMTcN67c7RjMzbBRsFUbADYUnxuMLsAxYqoRUmAcqgBZgRtVg4tgzl7L3HJBBzN6jTbcD40gfANlkakbjnHeO/ypZVT2Rpjewaos6BHAATMWuIS3WFNbWZAWiTAJgTJMUXwrEWwXLWjiMQx7KvGTKV1ZhMuZMZdNtwKryueR/em889a1DNOZSQRsRy8jWepXuitPzG/B8OAWZhlUE6Nyg7R8d6cf4hnKpaBZy0KqbkEaie75aVU2xhjXVu4mde/wCM1aOi1hbJ627dFtjqSWymOQygyfhTxrU6NZZpQhpX9nVMNiruResClgozdlTrHfE0HxThtm/pctqdNYkETtDAyD691IMR0nwwUxiYYxDMjuNGEwCsciPWp7fSjBt/9SoP/wCuNY1iV21+Q8Z9DuY+LR5qxS5EHGeidqwym275XIkMDcywZBlRPfv8aq3F+CXbOa4ri7bB1I5eYj56V0PjOLs3oe0UMA5XzkBWghvHYjlSjozhUa9cw6mToHFw5IB2hSJdgFkGNo5VhPHCTpG0ZSStlT4Bxt8PcFy2dPfU7MOYP612ThePTEWlu2zKsNuYPNT4iuH8Wwn3fE3LfJWgeR1q3/Zvxjqrxssexe28HGx9Rp8K45L80dKZ0rq/CsG3W9y+KhbFCsyzcWq91XjWqF29lGbyBP0ou1wnEt/CKjvYhfqaAKgOkSk6kDzqY8WBHtD01+lVtjZIkCT4Amovv7bAGPT6V4H/AA4P7qItjxuIA7BvWB8qiPE38AB+9qi4fazCSY8ANfjW2K4hataC2Se80dlcJWVTomw2ILHQDzOlOLNjSSRSTh+Ltk5tJ7lUn6mt+I8UukRasu3p+lRLBOcqghWNL3EUXSfSosR0iW2NfQD9arR4fjLv8Fl8zlHrJJrNvodiyZJtjzYn6LXTD7N8sXxBl7pYZ7vLWpMHisTjm6mwqa+29xcyovMlfeJ2is4boM7f6l1fJQfzq04HD2+HYG+6e0J7WxLNp8gAK7cPRwjJNIKfk5J0r4IuGvG2L/XEe0QuSD3AAkRSOzOcZd9fprTnCcMvY25cKFZVWdmdsogcpg6nX4GluHwRNk3ZiIK+QMEz56CvQSt7A37NwY5Tod/Eb+fOnvFLEcOw9wooW4AEIc5pVnBLAiNcjHTaRSFLgImJkGeUGN9PjXT14aMRwyxb70tjlIKncTtt861jjWT+DOc9NHLrV3KZ5Hu+YI51N92LHMokGSPJRJPkIq0cU6LpbD2LTK11IcayzDuMRl9BvVOfMsgErurLtz1BHpt4VlKLRopJnsLdGcTsSAaseH4SudAwkXVlSZgMPaWVI1mflVVYVeujeIF+x1Z9tDmQ9zoNfisN6GtMCUnTIyNpWMsLwFFGmnMkAGfVgaMPCliNCPFZ+kUwsPmUGNecQQDzAPnW8Hu+Ndagkcrm2JrvCzGkabbj8jSfG4DLvCGdCTCknbK3InuNW9rZ5kDyH60v4hasFGW7cEMCDLf+kaUpRtFRlRUbnBWYksF8zH5HWl/FsLkCQCglgWI9qOcDlqaaDpALNnq2XrXTRGU9lgTC5uc+Aofg9g3nd7t3L1YzQzASW2RBGm2yj++DUKpcs3TlyxUtrKkdaFU6xD685ML86gNkH+Pb+Dj/ANFOMdZe5ZZ7ViElgzRLTEP2p7UDw3qtJWElTLW4xXDArla5bIAOQZyMpYyfaA3IFD/4a0b2yZ3F23t5FvKvKgI8a0FnUAx66fE0MaH/AAF7YDWsSFKEyO1bZQ0Rm9rMpjmp866Pw/jdjsm3bBIEJcVewAoygdYwWANq47iLRKrtCSARzkzvzqwcCYrlDWnYmACqk6cq3xZGtv1MpwT3F/Snt4i44nV9J5iYB+nxqHBOUdCNCpHxBq2dL+HIEV2i2wVZBEMSSSAF8lFVO3oZ7tfhWdO22XfhHdU43gMoZbLvIB7TnmO5ZqG70rCf6WGtJ4lQT8WP5UswXRdTZtZrrD/LSQo55ROpP5U2tcHsqIyFvFj+kValiXgisj8i1+mWIuGOvA8E/wDiBQWL4neO5dye7+81YbPDbKGVs2we/LJ+Jo1SeWnlp9KffS4QdpvllDToe863IHdE/mKfWOFKqgaeij85pv1Q7xWMg7zXB24nQtgOzhguwrxwyndR8BRkCvfCmopeB2wdcOO75VuLdbmsZgKoDZbdSCwahOKArZMVO2vlr9KAJepNVHpjjJwboD7ymrW14jcH1EfM1zTpTiYLJOkkbg7bajT/AM1cOSZcEPRTGWrPD8XccS/WKirMZs6QoJ5Lq5PgppOlxbdhc6SuVQQRET70H0PqKV3WKgrPZJDRyzKCAY74ZvjT8W7OXIlxrgA2dAsrpEQxnX8u41tj2k/mZy3SK9xNClxlUACBAHdHLvronD+KrZw9t+vthUw6LlYSc8ZVYa6gxsO6qnd4ablqXIm3orj8PLMD+/zWNwl43XLOhzaecRTuUHxyS1GS3LNw7jdpTN2+XOZnVxb1htHtgSZB0juImkPH8cl24GRMhObNPtHbKX5bDl471v8AcYe0oHZUAl+/WSfDuqLpBhGS6hI9u2jDyzFfyNKSem37HGr2FhTlR3A8U9u4MkkkiAPxDb6ketDKuoonh6NnJXlpI3kkQBWa2kW90XHh3FrnWtbRAM5Lme0F090ADTYa91EY6/iSwCsRJEwABqY8aWXsdeBzDIjEQIUEnaRLT3UOv3hzL3HjuEgGunX+JhpXOwxwVl5f7xciCIztpGuomBQWMbCgsWvKRB0QT5bD96UJiOGM2wgd5PzrHR7o6cVeW0uwOa40aIoOu+hJ5D+9RKTS4/MpK/IvxuNtjJAzEE5VHZkQAveZkv8A8q6LwHgjLaQtai4VBYBC2UnXKOWm1W3hHA8PhlC2bSjWcxGZye8udT9ByimJY1ksrTs0cE1RVMVwO9cWIb1Kr8ifyrnXS/oPfwq9fCtbJ7WQkm3OxbQdk9/Ku3gVkoCCCAQRBBG4O4IonkcuQjBR4PmRHohboO9dL6W/ZZmm7gSAdSbDGB//ACc7fytp4jauY4/B3bDlL1trbj3XBU+k7jxGlSmVQXhMS9s5rbZT4QfkwIp63TPGlAhvwBtFtAfiBVRFys9bT1IVDPE4pnYu7M7HdmMmj+i3DGxeKt2VHZnNdPdbUgtPnoo8WpBhxnYLmCyfaaYHiYBPwBrqHRfjnD8BaKWutvXHg3LmTLmI2ADNIUSYHiTTtvgNkdHZKjgVS7v2gqfYsH/qePkFNDP08uHa1bHmWP5imsUha0XzSvT4Vz89Ob/4LP8Axb/30Rgek2NvtltW7Z7yFaB4li0Cn2pC1ouNu1cb2bTnyU/pW3+H3vwhf5mVfqZqDE4m6/tOx8yaFWBuwHrP50dheWHd+Qy/w0+9dtL/ANRb+kVn7tZG94n+RPzJFAqoO2ZvJSfoK3GHblbb1gf1Gjt41yw1zfgKz4Yf/dbzZV+QBNe++2B7OHB/mLt9SBUSYZ+5B5uT/SK3+6N+NR5JPzLUf9aD42D8Q4g2U5LVtPJVH5E/OuacV4vjS7A3nUTspgfAV1I4BToz3G9VUf8AaJ+dQDo7hJk2EY97y/8AUSKlzj4Q0n5Zxu6WY9u6SfFp+prbFYG51JYI5RdS2VsoHeWiAK7hYwVtPYt20/kRV+gFEuuZSrdpSCCp1BB0II7qlyKo+cpDCKO4S9r2bz9XlEq2UtMe7pse6nPTjoZcwjG7aBbDEzO5tf7bn+3ub0Ou9VFwHQ1V2KqL9wToRiLgOa7byESuYMSQeRgfrSTj/RRcNdVLqqCwLKyk5SAY1YxrqNPGg+EdIsXhhFi+Qv4WCuo8g4OX0rXi/SPE4kjr3L5fZHYVVJ3OVEEnxJ0qlKS2e/4ipFm6H8NF252kJs2wCY2JJ0WfEAme7zoH7VOJW72LRbYWLNpUOUAQxZmK6dwK0NZ6a37WH+74e2llTOZ56y4SRBOYgAHT8OnKKrWg1J131/fzonJydsEkkMuj2A62/bQRrmOvIKpMn1irvgOA3yFFvDQgJKmVVWLfxJYg6iAIG07zW/2dcGt2bD4vFhVF5QtsXIAFqZzGfxmNOYUd9WPF9PcEn8XNHJEJ+cRWak7tDa2piy10RxB1ZrSf8nMeQCj50W/RSygm/iSP+Fsf90n50sxn2o2hPV2XY8szKo+Un5VUeM9N8TiDrkVeQVFMD+ZwW+BFX3JvyTpii+jh/CFYFrqPAIyteLqZ5lJgmt+GcW4Zg0KW7u5kkKzE9wkLECuQHFMa1NxqTV+x8HY7vT7BDbrD5J+pFBXftIw49m1cP/Efma5Scx/8D67msi2aNK9BZ0x/tKTlYPq/6LQt37TX92yg82J+gFUG3hSdv360TawE7si+bA/JJPyqlFehaiy3/tIxZ9nqx5JP9RNKuIdMcbeUq7qyn3Wt22HwK1rY4JmHYZrh7rVq449WYLRmH6I4ttrLD+YqvyYg09K8itlS+4yZPPuED0A0FT2+Hr3VeLHQPEnfq182J/pU0ysfZ83vXgP5UJ+ZYfSn8CD4mc9TCAcqc9H+AtiLgWGCa5nC6LpO+01fsF0Jwye3muH/AHGB6BI+ZNPcNgktqEtqFUToPHfc0PJFcAovyVyz0Hwy7m43m0f0gUfY6M4VdrSn+aW/qJpwVrIFZan7LpAVvh1pdrVseSAflRKipa9SGaJgLQ/hg/zEt/UanVY2UDyAFTwBWpbxqRmhzd5rXq63NwVqbgoA8LdZyCozdFYa5QBMAK8fShTcNYLGgAvOK1N8ULXhQAS18EQdQdCDGo7iKoXSP7OLN0l8KepY+4RNs+QGtv0keFXQzWt6znUqSwB5qxU+jKZFAHDuLdFsbhpNyy2Qe+hDL8RqPUCky4hvE13C70KwjmXR3Pe924x+JaibHRHBLth0P80t/UTTsVHCMznkfpRWC4becgrbd41GVS23fA1rvtjhdlPYtW18kUfQUSB40WFHGLvC+I3SGe3ff+cMfk1StwbiLEE2nECB2EUAaaAQByFdiivR4U9QUcZHQ7GsZNlpPeV/91E2ugmMP8MDzdfyNdeisRRrFpOW2vs9xPM2h5uT9Foy19nN33r1seQY/pXRwPCtvSnrYaUUnD/Z7ZEZ7txj/tCr+RPzpth+h+DUybRc97szfKYqwTWKWpjpCodG8J/+PZ/4D86nt8Fw67WLI8kX9KOC1k+dK2FI0VQBAGncNvhW01jMK1a6KQG816Ki6+sdb4UASlaxp31FnPhWCTTAmkd1al6i1r2U0Ab9ZXs9YivaUAbliazBqQKK2yikMgKmvZamy91eoAhCV4pUpWsTQBHkrISt5rIoER5K9lqSvBKBkcVsKkyVg0AYmvTXqxmoA9FerVrlY6ygCTLWI8aiJrUsKAJ9KxmHjUPWV4MaAJs4rBvVEDNeIoAkN2tTcqIr414LQBJmNalqxFZC0Aa1gnwqbq6xFAEOY91YJNT5K8FFAEEGsgmpStY6sUAaCswamWzWepNAEGXx+FeKiiRbFa5RQB//2Q==" 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" /></a></div>
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As an additional project to go along with the Opel
conversion, the team has started working on a motorcycle that will compete in
the Pikes Peak hill climb event. The Pikes
Peak event will have significantly less demanding energy requirements than the
Isle of Man race, making it a good initial goal for getting started with electric
motorcycles again. <a href="http://www.wired.com/2013/07/lightning-pikes-peak-2013/" target="_blank">The winning electric bike actually outperformed the gas powered bikes at last year’s race:</a><o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgml5g3mZEspmkkCi-0ki_nlmzFcprXfXRHDzgRSCK8yl7HS5qE22_C99ih0t7RXyfsSBQI2sf4UkSXu18ft48vbDTv_iQFmKLItY-1zFJz-grNr5klW-WOsdpDiRFehOUN1r4qMH-xCyGM/s1600/carlin-dunne-pikes-peak-international-hill-climb-lightning-motorcycles-jensen-beeler-660x440.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgml5g3mZEspmkkCi-0ki_nlmzFcprXfXRHDzgRSCK8yl7HS5qE22_C99ih0t7RXyfsSBQI2sf4UkSXu18ft48vbDTv_iQFmKLItY-1zFJz-grNr5klW-WOsdpDiRFehOUN1r4qMH-xCyGM/s320/carlin-dunne-pikes-peak-international-hill-climb-lightning-motorcycles-jensen-beeler-660x440.jpg" width="320" /></a></div>
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The project has been headed by Jimmy (sophomore) as the Motorcycle
Team Lead, along with Lennon’s mentorship.
Lennon, Jimmy, and the motorcycle team has decided that modifying a
commercially-available Zero bike would be the most feasible option for
getting started with the motorcycles again.
A list of potential modifications for modifying the bike focused on the
improved cooling and thermal considerations, better aerodynamics, and improved
controls. Alterations to the suspension
and upgrading the wheels were also under consideration. <o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2ovmJcFr-fCAQ9OR-EzYHcsImGm_7gBpbowulpWlSupQ53fYIuOGPsltsTmZj7VVUSiuBgVuPdG3L_be_k2y-qZRwHOnIGgDvZJf3IKRNaesHEjIX9ifuSDIw8LBKL6qrQRyLXG2ryKf3/s1600/2016_zero-fxs_product-page_overview-image_15597.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="130" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2ovmJcFr-fCAQ9OR-EzYHcsImGm_7gBpbowulpWlSupQ53fYIuOGPsltsTmZj7VVUSiuBgVuPdG3L_be_k2y-qZRwHOnIGgDvZJf3IKRNaesHEjIX9ifuSDIw8LBKL6qrQRyLXG2ryKf3/s320/2016_zero-fxs_product-page_overview-image_15597.jpg" width="320" /></a></div>
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There were a few delays before finally bringing in a bike, but
Lennon was able to help us acquire the new 2016 model Zero FXS. Earlier work throughout the semester focused
on developing Matlab simulations and modeling for the race in order to confirm
that this would indeed be the best platform for modification.</div>
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<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEG-6kkR27GPpcHspeTGa_BW91C0H5N5T7dsgu3po-3ySBVi6qhy_F5C5npRoVBZQMVkYg7mweqXxUPnPYPLAnqwHoKH9q7hWq2RM1VJEFutJdj74hTVwwabWG2DPklHfVZ15SQuZ8ozlm/s1600/IMG_20151228_110713.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEG-6kkR27GPpcHspeTGa_BW91C0H5N5T7dsgu3po-3ySBVi6qhy_F5C5npRoVBZQMVkYg7mweqXxUPnPYPLAnqwHoKH9q7hWq2RM1VJEFutJdj74hTVwwabWG2DPklHfVZ15SQuZ8ozlm/s320/IMG_20151228_110713.jpg" width="320" /></a></div>
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While we still haven’t decided whether or not we will be
preparing this bike in time for the upcoming 200<sup>th</sup> Anniversary race
this June, we can finally get to work now that we have the bike in the shop in
time for IAP! </div>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="clear: right; margin-bottom: 1em; margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSUzGaJ_orau-Ee0KFeEt9JK1ka_RzF5JQr7ql6gHI22bgEnMYKPnHd9Gn6-HxjjFsfqXJZnVr8Lql6KWXBR-6QnhW95lDl1JlVTFyoVoZM9G_vXQ0YzGRBEcyN5syxzDdJ9TOlpjGyYK9/s1600/IMG_20151228_113531.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="239" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSUzGaJ_orau-Ee0KFeEt9JK1ka_RzF5JQr7ql6gHI22bgEnMYKPnHd9Gn6-HxjjFsfqXJZnVr8Lql6KWXBR-6QnhW95lDl1JlVTFyoVoZM9G_vXQ0YzGRBEcyN5syxzDdJ9TOlpjGyYK9/s320/IMG_20151228_113531.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Zero FXS in the Milkdrop!</td></tr>
</tbody></table>
</div>
Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-90431283108438715142015-11-21T21:24:00.000-05:002015-12-26T21:51:33.327-05:00Gloucester Clean Energy Fair 2015, Porsche Appearance!The 1976 Porsche 914EV recently made an appearance at <a href="http://www.gloucestertimes.com/news/local_news/energy-fair-heats-up/article_b98dc23d-67bc-5985-92e5-4d60287da130.html">Gloucester's TownGreen2025 Clean Energy Fair! Read more about the event here.</a><br />
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A handful of team members made the trek out to the event, where we got to display our Porsche as well as the electric ATV alongside the new BMW electric i3!<br />
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The Porsche was featured prominently right at the entrance to the Gloucester High School. As people from the community entered the building to see both exhibits of research projects and vendors for green businesses at the event, we were able to tell them about the Porsche, our current Opel conversion project, and the work we do as a team. <br />
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We also had a great opportunity to check out the new BMW models!<br />
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The day's events made for an awesome team bonding experience, and it was great to see how well-received our vehicles were at the event. The newer team members had a chance to learn a lot of info about the Porsche project as well. We taught them the controls and made time for some driving lessons through the parking lot as we were clearing out!</div>
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Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-1759019355340245072015-10-14T22:07:00.002-04:002015-10-14T22:07:55.482-04:00Update - 10/10/15<div>
Week five of the new EVT semester!</div>
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On the MechE side, the Suspension Subteam continues to work at redesigning the Opel's suspension. <div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0yjTySIR7wyHxjAtyNKFLkpHMAKGlxBpnuSyhqbPfpNIlDxLQ_vwMs0jGuM4dBZWnBfcN5_Z83EfUcXasYFqPovRZ5J_O2noCZrtYHUqQ2SrBqAPgN7ARlkID2rh8vdoKAeaOprycIqM/s1600/suspension-subteam.jpeg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0yjTySIR7wyHxjAtyNKFLkpHMAKGlxBpnuSyhqbPfpNIlDxLQ_vwMs0jGuM4dBZWnBfcN5_Z83EfUcXasYFqPovRZ5J_O2noCZrtYHUqQ2SrBqAPgN7ARlkID2rh8vdoKAeaOprycIqM/s320/suspension-subteam.jpeg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Suspension Design 101 with Jimmy Handy </td></tr>
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The team is reworking the subframe holding the suspension and powertrain components:<br /><br /><span style="font-family: inherit;"><i>"</i><span style="background-color: white; white-space: pre-wrap;"><i>The old design for the subframe used non-right angles to make it smaller, however, especially in the prototyping phase, mitered angles are more difficult to cut than straight across." </i>- Jacob Fisher</span></span><br />
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<tr><td class="tr-caption" style="text-align: center;">Powertrain subframe assembly</td></tr>
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<br /><br />The EE subteams are also making headway on their projects.</div>
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Several new EE's have finished schematic capture for the CAN dev board and are currently finalizing PCB layout.</div>
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Others are working on a wheel velocity sensor that will transmit to subscribing modules on the CAN bus.</div>
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Stay tuned for more updates! </div>
Anonymoushttp://www.blogger.com/profile/06784838657336177920noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-1981826700115722082015-10-03T16:36:00.000-04:002015-10-07T08:17:45.793-04:00Update - 10/03/15<div>
Lot's of progress being made by the Opel sub teams! </div>
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Here are some of the things members did this week:</div>
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<li>Installed and began learning KiCad</li>
<li>Began schematic capture for CAN dev board </li>
<li>Characterized hub motors for voltage, frequency parameters</li>
<li>Took measurements of stepper motor dimensions for PCB footprints </li>
<li>Installed and began learning SolidWorks</li>
<li>Began mockup of front compartment and cooling system</li>
<li>Set up firmware and hardware templates for electrical subsystems</li>
<li>Learned about CAN communications</li>
<li>Got two LPC uControllers talking to each other over CAN bus</li>
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Anonymoushttp://www.blogger.com/profile/06784838657336177920noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-91209253302951036492015-09-12T18:31:00.000-04:002015-10-04T16:46:56.768-04:00First meeting of 2015<div style="font-family: Helvetica; font-size: 12px;">
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A new year, a new batch of awesome freshman, and a lot of work to be done!</div>
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On the electrical side, the team is focusing its efforts on the development of several key components of the car architecture: driver interface, user interface, motor interface, throttle interface, low voltage system, gauges, and wheel velocity sensor. </div>
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Alison (gauges):</div>
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"<i>My group went through a small tutorial to introduce [freshman] to CAN - the communication protocol we'll be using in the Opel. Some of the topics we covered to get to this point included:</i></div>
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<li><i></i><i>Microcontrollers</i></li>
<li><i></i><i> How CAN works at the physical level</i></li>
<li><i></i><i>How CAN works at the software level</i></li>
<li><i></i><i>Sending messages over CAN</i></li>
<li><i></i><i>Checking if messages received over CAN contain specific data</i></li>
<li><i></i><i>General C syntax</i></li>
<li><i></i><i>Bitwise operations</i></li>
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<i>Ultimately, we were able to get two microcontrollers (LPCLLCX4?) talking to each other over CAN, and sending each other messages that caused an LED to turn on or off. In the future, members will apply what they learned to focus on a specific component on the CAN bus - the user interface.</i>”</div>
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Skanda (driver interface):</div>
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"<i>Our group started to flesh out the design for the electrical subsystem that accepts driver inputs (e.g. turning on headlights, blinkers, windshield wipers, etc.). We worked with our new members to make sure they understood the subsystem's basic architecture (switches -> LPC controller -> vehicle CAN bus and peripheral relays). After that, we took a look at Hugo's specs and decided on some of the relays that we should use, and the driver interface casing. We also thought about how to fit in our goal of having different car performance settings (sporty and non-sporty, with different throttle profiles). We indicate on the bus (with designated non-conflicting CAN ID x800) which setting our car currently is set to, after which the throttle subsystem should adjust its output accordingly.</i>"</div>
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Joey (batteries):</div>
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"<i>Battery sub-team introduced perspective new members to the design considerations we are facing with weatherproofing the front cabin, cooling the batteries, and mounting the batteries. We came up with some preliminary solutions for the weatherproofing of the cabin and cooling the batteries. Next steps are to test the preliminary solution we came up with, and to research more about air flow to determine if there is a more optimal method of both cooling and waterproofing.</i>"</div>
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In addition to the Opel conversion, the team is kicking off a new motorcycle project, headed by Jimmy Handy, for the Pikes Peak competition:</div>
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“<i>We are currently working on creating some Matlab simulations that will allow us to choose the model of Zero that is the best starting point for us. We are looking at the initial cost of the bike, energy requirements for each of the bikes to complete the race, weight, and acceleration profiles. </i></div>
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<i>The current winner is the zero FX. This is zeros lightest and cheapest bike. We plan on switching the motor and controller from the fastest, heaviest, and most expensive zero to the lighter bike in hopes we can have the best of both worlds.</i>”</div>
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Anonymoushttp://www.blogger.com/profile/06784838657336177920noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-49679501002301060782015-08-02T12:55:00.000-04:002016-01-03T13:56:57.248-05:00Albany Trip I: Departure<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: small;"><span style="font-size: large;">EVT: Boston to New York on a single charge!</span><b><br /></b></span></div>
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I just realized we never got to publish the blog posts outlining our trip to Albany, now over a year ago! It was such a great trip and big moment in EVT history, I wanted to make sure that we at least had a post about it. I tracked down our mile by mile notes that included a lot of great details over the course of the trip, and here's my four part, full narrative summarizing the team's final trike adventures!</div>
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<span style="font-size: large;">Saturday, Aug 2, 2014</span></div>
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<span style="font-size: large;">Day 1: Cambridge, MA to Florida, MA (130 miles)</span></div>
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The final week leading up to the big trip was spent making all of the necessary last minute preparations. </div>
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We made sure to get extra safety gear, a bluetooth headset for the motorcycle helmet, and walkie talkies between the vehicles. The van was packed with all the necessary spare parts and tools.</div>
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Joey and Hanna got the Xbee communication up and running so that the passengers in the chase car could wirelessly monitor the trike's battery pack.</div>
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Everyone went on a big team shopping trip the night before to get groceries for the weekend. John had to become the team dad and make the rest of us get our vegetables. Joey stuck around for a couple of last minute tests and packing the van. Jacob and Jarrod were up late reviewing the route one last time and preparing maps for each leg of the trip.</div>
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After a late night, we all ended up making it back over to N52, in one form or another...</div>
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John, Jacob, and Jarrod rounded up the vehicles the day before, with everything waiting in the garage. The trip was only intended for one way, so we recruited Alban to come on the camping adventure with his pickup truck to haul the trike and trailer back to campus after we were finished. Ten team members came on the trip, with the following driving arrangements: one person riding the trike, two people in the truck, and seven people in the passenger van. The insurance for the rental agreement required the driver to be 21, so John and Michelle shared the driving responsibilities. Alban drove his truck, and we rotated riding the trike in pre-planned 20 mile shifts.</div>
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The vehicles had been mostly loaded up the night before, and we put the remaining equipment in Alban's truck. We prepared to roll out, with the trike waiting in the garage charged up and ready to go! </div>
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The first day accounted for the bulk of the traveling, and we intended to cover 130 miles in order to reach the campground in Western, MA. The driving was split in 20 mile shifts, with Roberto, Erich, John, Jarrod, Hanna, Joey, and Jacob going in order.</div>
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With a quick morning meeting, we discussed the itinerary and day's agenda that we put together the night before. Jacob and Jarrod had traced the route on google earth and listed viable stopping points every 10 miles in addition to the 20 mile checkpoints. Everyone got a packet of papers with the list of stopping points, maps and directions for their leg of the trip. We also reviewed the Smith System for defensive driving and talked through the necessary safety precautions on the road.</div>
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Our sponsors Hugo from Beantown Tacqueria and Dave from Geoby also made an early appearance at the shop to see us off!</div>
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Not only had they shown support for the team throughout the trike project, but it was great to see them right before departing! We were happy to have their logos prominently displayed on the trike cover! </div>
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Slightly behind schedule, but still in great shape, we rolled away from N52 at 6AM with Roberto leading off on the trike. </div>
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<b><span style="font-size: small;">6:00, 0Ah - Roberto Leaves N52</span></b> </div>
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We had put a lot of thought into organizing the pit crew in the van, hoping to keep everyone busy and engaged and to make sure that everything went smoothly along the way. In addition to the van driver, one person was going to navigate and make sure we were on course, one person would be on their phone communicating with the trike rider, one person communicated with Alban in the truck via walkie talkie, the next rider in line would be studying the maps for their route to prep for their turn, and Jacob had his laptop to read the Xbee wireless transmission and monitor the battery pack live data.<br />
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It seemed like a good plan, but with the crew exhausted from the busy week and early morning, this was instead the resulting scene in the back of the trike...<br />
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It turned out to be a good thing, and everyone was well-rested in preparation for their driving shift, and the necessary jobs were covered. <br />
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<b><span style="font-size: small;">6:50, 5Ah - A123 Facility</span></b><br />
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The first shift went as smooth as possible, with Roberto putting down a quick 10 miles to bring us to the A123 facility in Waltham. A123 is one of our biggest sponsors and donated the battery pack used on the trip, originally used on the Isle of Man motorcycle in 2011. <br />
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Roberto tagged out, and Erich was in to take it the next 20 miles. We took a quick break for breakfast, eating some awesome food that Jacob cooked for everyone!</div>
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Erich suited up, and we made sure to take a team picture in
front of the A123 facility!<o:p></o:p></div>
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With that we were back on the road with Erich leading the
way. We encountered a bit of rain, but
no major problems and a quick pit stop verified that the waterproofing was
holding up fine. He encountered a minor
throttle problem midway, but resetting the controller resolved any issues. Otherwise, Erich pushed West out onto increasingly
rural country roads, and 30 miles were in the books.<br />
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<span style="font-size: small;"><b>8:26,</b></span><span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;"><b> 32.07 Miles, 18.4 Ah - Nashoba Regional HS</b></span> </span></span><br />
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<span style="font-size: small;">Erich took the trike into Bolton, MA where John took over. There was still a slight rain, but no major problems other than losing cell service in the rural towns, making communication to the trike helmet slightly more difficult. </span><br />
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<span style="font-size: small;">There were some problems with receiving the battery data, and Jacob resorted to just checking the battery data during the pit stops.</span><br />
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<span style="font-size: small;">Otherwise, John's careful driving made for a smooth shift with no stopping, and the last of the rain passed during his shift. Great weather remained for the remainder of the trip. </span></div>
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<span style="font-size: small;"><b>10:00, 53.11 Miles, 31.67 Ah - Princeton, MA</b></span><br />
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John pulled over into a small farm stand, and Jarrod was up
next. Everyone was up and out for a full
pit stop, and we checked everything to make sure the trike was holding up over
the opening legs of the trip. </div>
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We had the pit stop checklist down from previous testing, and
our schedule accounted for 5 minutes at each stop. The gang usually took a bit more time to hang
out and regroup but managed to stay roughly right on schedule. The next driver would hop up, suit up with
the helmet and gear, and sync their cell phone to the Bluetooth headset. Someone would check the temperature on the
motor, controller, and batteries. We
checked the battery data and recorded the energy consumption and time. Someone checked the tires and tire pressure,
and everyone else checked everything over looking for loose nuts and
bolts. <o:p></o:p></div>
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It was still early in the morning, but team morale remained
high! Alban, Roberto, and Alvaro held
down the fort in the truck, blasting Reggaeton and giving the Tacoma the new
name of Reggaetruck. <o:p></o:p></div>
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<span style="font-size: small;"><b>10:45 chain derailed, 65 miles</b></span><br />
<span style="font-size: small;"><b> </b></span> <br />
Jarrod’s shift saw the first slight
problems, but everything was fixed appropriately on the road. Some roads turned out to be in unexpectedly
poor shape, and increasingly hilly and pothole-ridden roads shook up the trike
a good bit.</div>
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<div class="MsoNormal">
<span style="font-size: small;"><b> </b></span> <br />
The chain ended up getting derailed, forcing a quick
emergency pit stop. Jacob made quick
work of tensioning the chain, while the rest of the team had an opportunity to
check and tighten up anything else that had managed to work loose.</div>
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<div class="MsoNormal">
We were back on the road in no time, with noticeably fewer
cars on the road the further West we pushed onto smaller back roads. Cruising along at 25mph turned out to be
quite relaxing with no other cars on the road and the rest of the gang following
along behind! <o:p></o:p></div>
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<span style="font-size: small;"><b>11:32 tape mirrors</b></span><br />
<br />
There was another quick stop, just to reset and fasten the
components attached to the handlebars.
The phone holder, mirrors, and shifting levers had a way of rattling
loose on some of the rougher roads.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiG57HCT5IbJhGJdYNEEAzpL_s1f1AjwOP9ZiJM5wwG82uNYQ1UTNUIRQISwFISvsKeSsYByfSdQiHCXW6rCAPITQrL5LbAWoTWeIt0w3gNWwMRDeTpu3TFKit2c5GXTgoR_Dm6PiuDXR3A/s1600/IMG_0192.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiG57HCT5IbJhGJdYNEEAzpL_s1f1AjwOP9ZiJM5wwG82uNYQ1UTNUIRQISwFISvsKeSsYByfSdQiHCXW6rCAPITQrL5LbAWoTWeIt0w3gNWwMRDeTpu3TFKit2c5GXTgoR_Dm6PiuDXR3A/s320/IMG_0192.png" width="320" /></a></div>
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<div class="MsoNormal">
Otherwise, the trike was holding up fine, handling stretches
of gravel road with no problem. Driving
conditions couldn’t have been any better, a comfortable temperature, no more
precipitation, and nearly no other traffic on the road. Should there be any problems, fearless leader
Roberto was always ready…<o:p></o:p></div>
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<b><span style="font-size: small;">11:50, 72.15 miles, 42.26 Ah - Quabbin Reservoir</span></b><br />
<b><span style="font-size: small;"> </span></b> <br />
As we reached the 70 mile mark, Jarrod passed it off to
Hanna in New Salem, by the Quabbin Reservoir. <o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOeV4kapMkfurtig_fpNXGLlefpUKL3jnWv874K7FAlr64zWWaddeIxaPXX11vUWmV0w5as9J9yFRyFy-R5VIASGcebxMl1evjj_-CeJJvNaipcn-R3vcrrbmUtlfX4JA4RX81JpteFXH2/s1600/IMG_0223.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOeV4kapMkfurtig_fpNXGLlefpUKL3jnWv874K7FAlr64zWWaddeIxaPXX11vUWmV0w5as9J9yFRyFy-R5VIASGcebxMl1evjj_-CeJJvNaipcn-R3vcrrbmUtlfX4JA4RX81JpteFXH2/s320/IMG_0223.png" width="320" /></a></div>
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<div class="MsoNormal">
Aside a couple quick stops between the 50-70 mile marks,
there were remarkably no other major issues considering that we hadn’t tested
the trike under those conditions before.
The test run to Providence had only been about 70 miles and seemed like
an exhausting day, but now we were just getting started.<o:p></o:p></div>
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After another quick pit stop and reviewing the map, we sent
Hanna off and we were gone, just over halfway to the camp site.</div>
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We quickly found ourselves in an increasingly rural and scenic
setting, surrounded by lakes and ponds.</div>
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The crew was keeping it together in the party van, and Joey
was the designated sandwich maker for the day.
Having all the food in the van made it easy, and we were able to just
keep pushing forward while eating on the road.</div>
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<div class="MsoNormal">
Hanna ended up running into a bit of a problem as we
continued moving. We ran into a series
of unimproved dirt roads, and with no alternative routes, we had to see how the
trike fared off of the asphalt.</div>
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Jacob and Jarrod had made sure to plan the route mile by
mile, but somehow there had been no indication on Google earth that these roads
were dirt. In any case, there was no
hope of reaching New York with the addition of any major detours, and we had to
continue down the winding dirt roads.</div>
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<span style="font-size: small;"><b>12:45 push at dirt road</b></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
At a couple points the trike lost traction on the loose
terrain, and Roberto and Jarrod had to hop out and give a push to keep Hanna
going through the hills.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5BugRim_pKgYdqfz7kRzZjQ0_X7E9VI6VyNs1G0bCDpTZGlnp093wy450Kj_Di-1MttotEZMwjrc23r4uNXBOtnNugxfwjprxxcUFhy2m_D0qGiGyXeZbaq0svl3mR-WQHole3e2Mmsud/s1600/IMG_0263.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5BugRim_pKgYdqfz7kRzZjQ0_X7E9VI6VyNs1G0bCDpTZGlnp093wy450Kj_Di-1MttotEZMwjrc23r4uNXBOtnNugxfwjprxxcUFhy2m_D0qGiGyXeZbaq0svl3mR-WQHole3e2Mmsud/s320/IMG_0263.png" width="320" /></a></div>
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It was okay though, Roberto continued to save the day in the
bright yellow suit...</div>
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<span style="font-size: small;"><b>1:30,
88.6 miles, 51.73 Ah - Lake Wyola, MA</b></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
Hanna managed to keep the trike under control through some
incredibly rough roads, and brought us to a lake recreation area. </div>
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Travel was a bit slower on the dirt roads, making for a long
shift. We all took a break to regroup at
the lake, and checked over the trike to make sure that everything was still in
good shape. </div>
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<div class="MsoNormal">
At 90 miles in, it was great to see the waterproofing of the
trailer holding up. The fiberglass
fairing on the Providence trip had let a mess of salt and sand sneak into the
battery compartment, but the new and improved cage passed the Johnny quality
test!<o:p></o:p></div>
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<b><span style="font-size: small;">2:10, 97.58 miles, 54.95 Ah - </span></b><b><span style="font-size: small;">Scenic Overlook, Sunderland, MA</span></b><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
Hanna continued, taking the trike near the 100 mile mark before passing it off to Big Joe in Sunderland, MA.<br />
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<span style="font-size: small;"><b>3:10, 114.1 miles, 66.71 Ah - Flat tire by farm, Ashfield, MA</b></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
Joey took the trike up to 115 miles with minimal
problems! His run was so smooth that there weren't even any stops along the way, and we regrettably don't have any pictures of him!<br />
However, his run did end with a flat tire, but overall we were in great
shape. We were prepared with the
necessary tools, and the sight of us fixing the tire attracted the attention of
some new fans driving by! We kindly declined their offer to race their truck with the trike...<br />
<br />
We replaced the tire with plenty of time left in the day, and Jacob was up for the last round.<br />
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<b>3:40 - Leave Farm, tire fixed</b> <br />
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<o:p></o:p></div>
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We were steering back into a more populated area
as we approached Pittsfield, but the camp site was a mere 20 miles away! Last up on the schedule was Jacob, who had
been sitting all day and was itching to take a turn on the road. Nicknamed ‘Crazy Jake’ after a series of
stunts that included rolling the trike during testing in the parking garage
earlier that summer, Jacob was ready to prove that he could bring us home and
close out the long day’s journey!<br />
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<span style="font-size: small;"><b>4:22 - Savoy, MA</b></span> <br />
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<o:p></o:p></div>
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The team was still enthusiastic, although ready to
reach the campground and finally get out of the car. The repairs on the fly had gone as well as we
could have planned, but everyone hoped to not need any more. Exhaustion was beginning to set in as Roberto
stared at the road.<o:p></o:p></div>
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<b><span style="font-size: small;">5:11,135.3 miles, 79.97 Ah - Savoy Mountain State Forest, campground</span></b><br />
<br />
<b><span style="font-size: small;">Day 1: 58.2 Wh/mile</span></b><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
As the roads snaked through the mountains, Jacob
brought the trike up to the camp site. </div>
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After a number of full-time UROPS for the team and
countless hours spent working on the trike, Jacob had put as much time as
anybody else into the trike project. As we
were about to round off a successful first day of travel, we were happy to
conclude part one by following Jacob to the Savoy Mountain Reserve. A mere 50 miles from the final destination,
we finally had time for some much needed resting and regrouping.<o:p></o:p></div>
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<a href="http://mit-evt.blogspot.com/search/label/Albany" target="_blank">Full trip outline and details here</a>Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-67027122517321499802015-08-02T12:30:00.000-04:002016-01-03T13:00:16.349-05:00Albany Trip II: Camping<div class="MsoNormal">
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<span style="font-size: large;">Saturday, Aug 2, 2014</span></div>
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<span style="font-size: large;">Camping: Savoy Mountain State Forest</span></div>
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<span style="font-size: large;">Florida, MA</span></div>
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<span style="font-size: large;"> </span></div>
As we reached the address of the campground, we realized
that Jake’s work wasn’t quite done. A couple more miles needed to be traveled
uphill on a dirt road leading into the camp site. We hadn’t accounted on it, but Jacob made it
up without any problems.<o:p></o:p></div>
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After checking in, we got the trike parked and covered at
the campsite, and set up the tents for the night. Roberto proved his stories of living in El
Salvador, and showed everyone that he really could open up a coconut with a
machete…<o:p></o:p></div>
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Fortunately there was still plenty of time to chill with the
gang and hangout before nightfall. The
state park with the mountains and lake provided a great venue for spending a
night away from the city. We all went
swimming, played football, and fishing with Alban.<o:p></o:p></div>
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We moved the bench seats out of the van and around the fire,
with Eagle Scout Johnny keeping everything running smoothly around the camp
fire. With everyone focusing on the
trike, we didn’t have many opportunities to just hang out earlier in the
summer, and the camping turned out to be a great team bonding experience.<br />
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<span style="font-family: "Calibri","sans-serif"; font-size: 11.0pt; line-height: 115%; mso-ansi-language: EN-US; mso-ascii-theme-font: minor-latin; mso-bidi-font-family: "Times New Roman"; mso-bidi-language: AR-SA; mso-bidi-theme-font: minor-bidi; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin;">We
cooked hot dogs and marshmallows, and then went for a midnight hike through the
woods.</span></div>
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Everyone managed to survive the night, with Alban sleeping
in his truck, John under his mosquito net, Jarrod and Joey sleeping in the van,
and everyone else content to sleep in the tents. </div>
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Except for Alvaro, who was deathly afraid of a bear finding
him during the night, and slept curled up in the bed of the truck…<o:p></o:p></div>
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Then we were up and at it in the morning, with mountain man
Alban cooking the bacon and oatmeal over the fire as we cleaned up the camp
site. <o:p></o:p></div>
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<span style="font-family: "Calibri","sans-serif"; font-size: 11.0pt; line-height: 115%; mso-ansi-language: EN-US; mso-ascii-theme-font: minor-latin; mso-bidi-font-family: "Times New Roman"; mso-bidi-language: AR-SA; mso-bidi-theme-font: minor-bidi; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin;">We
prepped the trike for the voyage, and gave it another good inspection before
taking it on the road.</span></div>
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After a few team pictures, we talked through the plans for
the day, Jarrod gave a quick pep talk, and we were back on the road! Only 50 miles away from Albany, we had high
hopes of closing out our goals from the past two years!<o:p></o:p></div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-32538217826633334992015-08-02T12:00:00.000-04:002016-01-03T13:51:39.915-05:00Albany Trip III: Final Stretch<div class="separator" style="clear: both;">
<span style="font-size: large;">Sunday, Aug 3, 2015</span></div>
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<span style="font-size: large;">Day 1: Florida, MA to Albany, NY (60 miles)</span></div>
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We were hoping that day 2 would be a piece of cake after the
130+ miles that we put down the day before.
The original itinerary put us in Albany around 2-3pm depending on
traffic around the city, and with a 3 hour ride back to Cambridge, we could be
back before sunset. But with the wear
that the trike sustained, the team was in for a much longer day.<o:p></o:p></div>
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<span style="font-size: small;"><b>10:05 - Jarrod leaves</b></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
Jarrod started off the day, planning to trade off in 10 mile
shifts, hopefully concluding with Roberto bringing the trike into Albany. We only needed 30 miles to take us across the
state line, and a little over 50 to reach the Capitol. </div>
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Successfully making it to Albany required navigating some of
the steepest roads through the Berkshires, hopefully giving us valuable data on
the regenerative braking, but undoubtedly posing some challenges. The day almost ended early with Jarrod taking
the trike down the steep dirt road leading out of the camp site. Jacob did well bringing it up the hill, but
it was tough going down without building up speed. In swerving around a pothole, the trailer
skidded out behind the trike and nearly dumped the vehicle into a ditch beside the
road before Jarrod got it back under control.<br />
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<o:p></o:p></div>
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<b><span style="font-size: small;">10:55 - Loses regen down hill</span></b> <br />
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Another tough moment came several miles later, when the
regen controls temporarily stopped working.
Unfortunately, it occurred down a steep hill with no locations to stop
and reset the controller. After nearly a
mile of steady descending with just the mechanical brakes holding back the trike and
300lb trailer, the drum brakes heated up enough that the trike wouldn’t stop at
the bottom of the hill. Swerving into
the intersection, Jarrod couldn’t get the emergency brakes to work and luckily
didn’t get hit by a car before turning it uphill and stopping. <br />
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<o:p></o:p></div>
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<span style="font-size: small;"><b><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYLu_2XWdaUr8X8SV_pDvcprfSAAwtY7Iy9XVFxBDQgv1tv6ZKW9hfuFk5i44fIg0MwBoyfh_CaRwaQRxRy5bFyNXoyJkP_SRljt9VpCdc6JrpiEgnC2DF3uzVrZf2z8mcMQhnyVj8iQdw/s1600/IMG_0371.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYLu_2XWdaUr8X8SV_pDvcprfSAAwtY7Iy9XVFxBDQgv1tv6ZKW9hfuFk5i44fIg0MwBoyfh_CaRwaQRxRy5bFyNXoyJkP_SRljt9VpCdc6JrpiEgnC2DF3uzVrZf2z8mcMQhnyVj8iQdw/s320/IMG_0371.png" width="320" /></a></b></span></div>
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<span style="font-size: small;"><b>11:15 - Stop, brakes overheating</b></span></div>
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It was all hands on deck to get the trike back up and
running. After a quick couple repairs
and allowing the brakes time to cool, everything appeared to be ok. The aggressive camber of the front wheels on
the tadpole trike had led to visible wear on one side of the tire, so we also
took the tires off to flip them around.</div>
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It wasn't quite the start we had wanted to the day, but a great team effort got the trike back on the road. Two hours had passed with only a little over 10 miles traveled, but we were back on the road at noon.</div>
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<b><span style="font-size: small;">12:00 - Go!</span></b> </div>
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<span style="font-size: small;"><b>12:20, 149 miles, 86.89 Ah - Cheshire Elementary School</b></span> <br />
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After about 12 miles through farm country, Jarrod passed the
trike off to Hanna at the Cheshire Elementary School. Brakes appeared to be once again fully functional and good to go.<o:p></o:p></div>
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<span style="font-size: small;"><b>12:25 - Kid driving electric police car! </b></span></div>
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<span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;">We finally crossed paths with another electric vehicle! A young kid at the elementary school drove past us in an electric powerwheels police car. He and his dad stopped to check out the trike for a few minutes, and we were able to make a few more fans! </span></span></span></div>
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We were behind schedule, but at least there was a view! Back on the road, there was nothing but hills, trees, grass, and farms. Still about 35 miles left to go.</div>
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<span style="font-size: small;"><b>12:46 - Power failure, contractors open</b></span><br />
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<span style="font-size: small;"><b>1:25 - Lanesborough, MA</b></span><br />
<span style="font-size: small;"><b>Lunch, ice cream, debugging...</b></span><br />
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We had only been a bit behind schedule when we hit another
major roadblock. The controller kept
losing power while Hanna was driving, and she had to keep resetting the
controller. After slowly creeping down
the road, Hanna pulled over into an ice cream stand/country store to regroup.<o:p></o:p></div>
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We called a break for lunch there, and took a look at the wiring
in the back. Roberto and Joey traced the
problem back to the main Kelly connector, and after cleaning it out the power
appeared to stay on. </div>
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On the bright side, we had a good chance to calm down and
get some food. There were enough curious bystanders that we got to do some
outreach and tell them about the project!<o:p></o:p></div>
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There was still plenty of time left in the day, but the slow
pace was still concerning considering the 30 miles we still needed to
cover. The problems kept coming too, as
Hanna got back on the road but only was able to travel about a quarter mile before
once again losing power to the trike.<br />
<br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;"><b>2:41 - Berkshire Hills Adventist Church</b></span> </span></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;"><b>Re-crimp, check connectors...</b></span></span></span><br />
<span style="font-size: x-small;"><span style="font-size: 10pt;"> </span></span> <br />
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We pulled over in a church parking lot to work through the
problem and discuss our possible options.
Joey went to town checking and remaking the connectors, trying to diagnose the problem. We found that a problem was being
triggered in the battery management system as the pack was discharging.
With limited options, we decided to bypass the BMS and connect the pack
directly to the controller, and we would continue moving forward.<o:p></o:p></div>
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<br />
<span style="line-height: 115%;"><span style="font-family: inherit;">Joey
reconfigured the setup and established the correct connections over the
contactors. Slightly concerned with the
reliability of the trike moving forward, we decided Roberto and Jarrod would
finish out the ride from there. Jarrod
suited up for another quick shift and took it back out.</span></span><br />
<br />
<span style="font-size: small;"><b><span style="line-height: 115%;"><span style="font-family: inherit;">4:20 - Jarrod leaves church </span></span></b></span><br />
<span style="line-height: 115%;"><span style="font-family: inherit;"><span style="font-size: small;"><b>26 miles from Albany</b></span> </span></span><br />
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The trike gradually became slightly slower, with several steep hills providing a struggle.<br />
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<span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;"><b>5:20 - 12v battery died </b></span> </span></span><br />
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<o:p></o:p></div>
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<b><span style="font-size: small;">5:25 -Cross border into NY state</span></b></div>
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<span style="font-size: small;"><b>6:10 - Roberto takes over at gravel yard</b></span><br />
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<span style="font-size: x-small;"><span style="font-size: small;">Roberto took the baton again, with 15 miles left to go. We had assigned him the very first shift as
well as the very last, partially because he undoubtedly deserved the honors,
and partially because he had the most riding experience in urban traffic. </span></span> <br />
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<span style="font-size: small;"><b>6:26,
180.1 miles, 104.1Ah, 58Wh/mile</b></span></div>
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<span style="font-size: small;"><b><span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;">Reprogram controller, lower minimum voltage</span></span></span></b></span></div>
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<span style="font-size: small;"><span style="font-size: x-small;"><span style="font-size: 10pt;"><span style="font-size: small;">Jacob had to reconfigure the controller settings with a lower minimum
voltage cutoff so that we could keep moving, but even when the trike was
properly functioning, progress was substantially slower. With a
combination of exhaustion and frustration at the prospect of turning
around after coming so close, the gang turned to John, always calm and
collected. Hanna got the picture of him above, appropriately chilling in front of a
Johnnycake Lane street sign. </span></span></span><b><span style="font-size: x-small;"><span style="font-size: 10pt;">
</span></span></b></span></div>
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<span style="font-size: small;"><b>6:43 - Stop at Rite Aid</b></span><br />
<span style="font-size: small;"><b> </b></span> <br />
Jacob checked the controller settings again in the Rite Aid
parking lot, with Roberto just a few miles outside of the city. Roberto had stopped because he was worried about a potential problem with the DC/DC converter, but everything appeared to be fine after a quick diagnosis.</div>
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<span style="font-size: small;"><b>7:26,187.9 miles, 106.3Ah - </b></span><span style="font-size: small;"><b>Last roadside stop</b></span><br />
<span style="font-size: small;"><b> </b></span> <br />
Roberto kept rolling, and was fully prepared to bring the
trike in even if he had to pedal to drag the 300lb trailer himself! </div>
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<b><span style="font-size: small;">7:39 - Crossing pedestrian bridge</span></b><br />
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There was one last pedestrian bridge, and once crossing in the
bike lane, Roberto had finally made it to the city. We ran after him on the pedestrian bridge
while Alban and John drove into the city, and we all finally made it to the New
York State Capitol building. <o:p></o:p></div>
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<span style="font-size: small;"><b>8:12 - Albany State House, pictures</b></span></div>
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As we made sure to get plenty of team pictures, we were as exhausted as we were happy to have finally made it there. The event turned out to be a great going out celebration for former team leader Roberto, who finished graduate school two months earlier, and had
been committed to the team throughout the trike project. </div>
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John was a senior and had just graduated as well, and he had been the only
active member involved with the old EVT team.
To commemorate his four years of involvement with the team, we pushed
him the rest of the way up to the steps of the building.</div>
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<span style="font-size: small;"><b><br /></b></span>
<span style="font-size: small;"><b>Final Trip Statistics</b></span><br />
<ul>
<li><span style="font-size: small;"><b>
190.7 miles</b></span></li>
<li><span style="font-size: small;"><b>
107.2Ah</b></span></li>
<li><span style="font-size: small;"><b>
11.1kWh</b></span></li>
<li><span style="font-size: small;"><b>
55.9 Wh/mile</b></span></li>
<li><span style="font-size: small;"><b>
7.6% regen</b></span></li>
<li><span style="font-size: small;"><b>
8.25Ah regen</b></span></li>
<li><span style="font-size: small;"><b>
29.6 mi/hr max</b></span></li>
<li><span style="font-size: small;"><b>
15.5 mph avg </b></span></li>
<li><span style="font-size: small;"><b>
11hrs,53 min</b></span></li>
</ul>
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As the sun was setting in New York, we packed the trike and
trailer back up into Alban’s truck. With
a mere 3% of the energy left in the battery pack, it was time to take it all back
home. John and Alban drove us back to
campus, with a celebratory team dinner along the way. The trip certainly wasn’t a flawless run with
the trike, and we had a lot left to process and consider in the ensuing team
meetings. But after everything we’d been
through over the course of 2 years and 200 miles, it felt good to be able to
say that we finally made it from Boston to New York on a single charge.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJRR834p8UKAViqIVFJI0JP2sN1N2GeTgeYCRbzjoNjhMDlLc5ywZuKpSu11mE4YeckQnIqCKIZbf54grMZc7RNwxjM3FhHxZjIR51Yh3errq3-If__Dl1ozRecArqnv96t7K_OzZ6u-JB/s1600/IMG_1585.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJRR834p8UKAViqIVFJI0JP2sN1N2GeTgeYCRbzjoNjhMDlLc5ywZuKpSu11mE4YeckQnIqCKIZbf54grMZc7RNwxjM3FhHxZjIR51Yh3errq3-If__Dl1ozRecArqnv96t7K_OzZ6u-JB/s320/IMG_1585.jpg" width="240" /></a></div>
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<br />Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-20303361410085409232015-04-12T21:55:00.000-04:002015-12-26T22:38:58.193-05:00OpelGT - Engine Removal Time!We've got a new Opel ready to go, and it's finally time to remove the engine!<br />
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The team made sure to take the necessary measurements for the original vehicle ride height and curb weight distribution, and then it was time to finally get rid of every unnecessary component and make room for some batteries! </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBByQJy0NWpK3x7tuXZm1_NPCDeGIn0sKnbWUvOCXavpnLEf1tQR94gaLAY0PiRh2kdqaOhHfBZlrN-Ga6Jeax4jAOXrWhzu9Ih8LuG0uCxezphFa8mgiVow0u_KUMXH9_OSn8FDyxEqL-/s1600/IMG_20150411_114009355_HDR.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBByQJy0NWpK3x7tuXZm1_NPCDeGIn0sKnbWUvOCXavpnLEf1tQR94gaLAY0PiRh2kdqaOhHfBZlrN-Ga6Jeax4jAOXrWhzu9Ih8LuG0uCxezphFa8mgiVow0u_KUMXH9_OSn8FDyxEqL-/s320/IMG_20150411_114009355_HDR.jpg" width="320" /></a></div>
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We knew it was going to be a big undertaking and not many of us had lifted an engine out of a car before, so we set aside the entire day for getting the job done. Starting first thing in the morning, it was all hands on deck for the MechE team. </div>
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We had the operation all planned out and prepared through the week leading up to engine removal day. But with the usual clowns at work, it wasn't long before even draining the fluids led to a big mess...</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPlcYzGd4Y8xjtazX7nskUKaxVfyaZppwwOfno5j3rCNOwECDBJjyvG3l21G_9ufeZ40fYEptQoZtiSuZtd0_mjczGHUwQJyN6n8IqJsxjPHhgEDZk9vvbzw2NpxQa8lpLXPHfo2Zqc-vs/s1600/2015-04-11+09.45.39.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPlcYzGd4Y8xjtazX7nskUKaxVfyaZppwwOfno5j3rCNOwECDBJjyvG3l21G_9ufeZ40fYEptQoZtiSuZtd0_mjczGHUwQJyN6n8IqJsxjPHhgEDZk9vvbzw2NpxQa8lpLXPHfo2Zqc-vs/s320/2015-04-11+09.45.39.jpg" width="240" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQS4ZqsAjl9QGPLFAST13FSP8_A0W0_sfvowXgYN949D4KU6z-Vso9qYduNmS5Od2xS02aK5lVMbsuFocgCGoKiJN62nhXsqLeo0imqGJeMzbMYmMrAblqaaThwny4Dj7eYBKn4l3TO4XK/s1600/2015-04-11+09.47.43.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQS4ZqsAjl9QGPLFAST13FSP8_A0W0_sfvowXgYN949D4KU6z-Vso9qYduNmS5Od2xS02aK5lVMbsuFocgCGoKiJN62nhXsqLeo0imqGJeMzbMYmMrAblqaaThwny4Dj7eYBKn4l3TO4XK/s320/2015-04-11+09.47.43.jpg" width="240" /></a></div>
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Just kidding, aside from a couple of minor mishaps, the team worked effectively under the leadership of graduated EVT legend John Kongoletos, who had returned to give us a hand. With everyone working away, the disconnecting and disassembly process was moving along efficiently. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-He1NOp6347Rlst1xv2S5eaU14cyzloNBUclmL0iDfKMOE386J1p4cjkIAv1p8ijXgOGt3i6AwVmy57JQNzhnzPTc6VTlP61hpd4g2nX4DBI2ovn96o7SLy71DJ9xL1-VGbxqZQtD5k2a/s1600/IMG_20150411_113941473_HDR.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-He1NOp6347Rlst1xv2S5eaU14cyzloNBUclmL0iDfKMOE386J1p4cjkIAv1p8ijXgOGt3i6AwVmy57JQNzhnzPTc6VTlP61hpd4g2nX4DBI2ovn96o7SLy71DJ9xL1-VGbxqZQtD5k2a/s320/IMG_20150411_113941473_HDR.jpg" width="320" /></a></div>
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Everything was situated under the hood such that it was easier to leave the transmission coupled to the engine, and remove everything from below. Having the car lift made the job much easier, as we could raise the vehicle and drop everything right out through the bottom...hopefully. It seemed like a straightforward operation after everything was disconnected from the motor, but some stubborn stripped and corroded bolts holding motor supports in place added some extra challenge and significantly delayed the process.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfNQgltEgj0xMBJGxo8fai-hGvapymhCKb2NGU5avA8LR4gLPqquHzuQBveYnpH-VrlBpMj5PVU40WgReZX-hR6IB4JdcQLgL9BejlPX8mmLjQ3KqnMQEYbhihwMSmqZhZF9-1_cnobfJu/s1600/2015-04-11+15.04.38.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfNQgltEgj0xMBJGxo8fai-hGvapymhCKb2NGU5avA8LR4gLPqquHzuQBveYnpH-VrlBpMj5PVU40WgReZX-hR6IB4JdcQLgL9BejlPX8mmLjQ3KqnMQEYbhihwMSmqZhZF9-1_cnobfJu/s320/2015-04-11+15.04.38.jpg" width="320" /></a></div>
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We finally got the engine and transmission loose and up on the hoist. It required some careful maneuvering to get everything to slide out, but with Jacob working the hoist, Joey and Jarrod handling the engine, and John adjusting the vehicle on the lift, we finally got it through. It took nearly six hours to get the engine down and out after some unexpected difficulties, and although it wasn't graceful, we eventually got everything down onto the garage floor.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwapFIwlfdYXKoCGL9-NHXo0WfVO3rbGiwoVcVvXMwQXUbXLi_ZhQiuWwnS056-g3keA3sAIR5WLIosaTKqykXcm84VH05qfTeHZBWNoB5nFSnvn1ioqUN5QQHWr17jvQ-36yN4Okdz8eu/s1600/2015-04-11+15.17.52.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwapFIwlfdYXKoCGL9-NHXo0WfVO3rbGiwoVcVvXMwQXUbXLi_ZhQiuWwnS056-g3keA3sAIR5WLIosaTKqykXcm84VH05qfTeHZBWNoB5nFSnvn1ioqUN5QQHWr17jvQ-36yN4Okdz8eu/s320/2015-04-11+15.17.52.jpg" width="240" /></a></div>
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Taking out the engine was a big first step in prepping the Opel for the new conversion. There's a lot more work to be done on the new car before we can start adding batteries and the new drivetrain components, but the team is ready and enthusiastic! More updates to come soon.</div>
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Anonymoushttp://www.blogger.com/profile/03188257706776378604noreply@blogger.com0tag:blogger.com,1999:blog-1289236955728633352.post-48921468438177398212015-03-22T00:01:00.000-04:002015-12-27T00:26:27.159-05:00New Opel, New Hope<div class="separator" style="clear: both; text-align: left;">
It's only been two weeks since we cut up the white Opel, and we're already back in business. Our faculty advisor and big Opel fan, Professor Dan Frey, has been a huge help all along the way and already fixed us up with a new Opel, one in much better condition than the previous car. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU1SLDiTkoxbtH6a67Kd1MRTLViDsW5jEmWEKDIdqOK3ZwAuuAnONmxvkYjE-HQ4tE1FJTvP0XpqRTmySGEKhBipquGGCjfd071YcYwc847BC-OEarjYl1JPVaj8B9NkT80dj-rWsgciLc/s1600/Photo+Mar+21%252C+8+15+55+PM.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU1SLDiTkoxbtH6a67Kd1MRTLViDsW5jEmWEKDIdqOK3ZwAuuAnONmxvkYjE-HQ4tE1FJTvP0XpqRTmySGEKhBipquGGCjfd071YcYwc847BC-OEarjYl1JPVaj8B9NkT80dj-rWsgciLc/s320/Photo+Mar+21%252C+8+15+55+PM.jpg" width="240" /></a></div>
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With the excitement of bringing in yet another car, we brought in recent alums John and Thomas to take a look and assess the damage.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmsj7mHdbmG9RNYVliN9I3T27Vul8X0C9uhT4gfnmvpu5h_6OiYF8WwEbv0wzbwjdg2Vx_p_tw9pbELFLAr1WH-4towZi3cEnHIYRLB0dYz6kI29XNfKDUB9igtnrbq2x5vae0JdMitthd/s1600/Photo+Mar+22%252C+3+29+08+AM.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmsj7mHdbmG9RNYVliN9I3T27Vul8X0C9uhT4gfnmvpu5h_6OiYF8WwEbv0wzbwjdg2Vx_p_tw9pbELFLAr1WH-4towZi3cEnHIYRLB0dYz6kI29XNfKDUB9igtnrbq2x5vae0JdMitthd/s320/Photo+Mar+22%252C+3+29+08+AM.jpg" width="240" /></a></div>
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The body is in much better shape, and the new interior looks awesome as well, with everything complete and in very good condition. It's definitely a relief to not need to worry about a full and complete restoration!</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgohblFowEiZ5dNJEg2kF9X-ApHjEKElHa-gGZPpb0lH5vh8W9cB2CBGxbzXMGJaBX8jBMv35_VGU331EiO7ECGFgRfBlLWB25OJOtIjks1Wj-cr2fl2hFwkuGMbb7UUv4Pa5b7yPVwcqwj/s1600/Photo+Mar+22%252C+12+26+48+AM.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgohblFowEiZ5dNJEg2kF9X-ApHjEKElHa-gGZPpb0lH5vh8W9cB2CBGxbzXMGJaBX8jBMv35_VGU331EiO7ECGFgRfBlLWB25OJOtIjks1Wj-cr2fl2hFwkuGMbb7UUv4Pa5b7yPVwcqwj/s320/Photo+Mar+22%252C+12+26+48+AM.jpg" width="320" /></a></div>
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<span style="text-align: left;">The Porsche 914 and Opel GT are now both in the garage and make quite the combo. It took a while to obtain the new Opel, but now that we have it in the shop, we're ready to get started and excited by its possibilities it presents as a conversion platform. </span></div>
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