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Written by Dr. Rob Prins
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Wednesday, 29 April 2009 13:30 |
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James Madison University was represented at the 5th Annual National Sustainable Design Expo on April 18-20 in Washington, DC. This event is held in conjunction with other Earth week festivities on the National Mall. JMU's team consisted of undergraduates from ISAT, Math & Statistics, Secondary Education & Engineering. Team members attending the event were Margaret (Statistics), Tripp (ISAT), Paul (ISAT), Sam (ISAT) and Ari (ISAT).  Team members Margaret (Statistics), Tripp (ISAT), Paul (ISAT), Sam (ISAT) and Ari (ISAT). The team presented the results of their EPA P3 Award Phase I project |
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Written by Peter Denbigh
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Wednesday, 01 April 2009 14:55 |
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The Electric Scooter took its maiden spin at 60 volts! The wiring was finally wrapped up and some minor problems corrected and the scooter took its maiden scoot around the parking lot at 60 volts. Accelleration is great and top speed isn't bad either. We can't wait to wrap the project up so it looks stock and take it for a range test! |
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Written by Dr. Rob Prins
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Monday, 24 November 2008 18:16 |
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The Federalist Papers do not contain a single negative reference to hub motor powered electric-assisted bicycles |
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Written by Peter Denbigh
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Thursday, 29 January 2009 08:18 |
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Geoff and John met at the lab Wednesday evening and we made some great progress. Prior to their arrival, I modified the rear clutch system and installed three new bolts that didn’t have any clearance issues. Once installed and tight, the Drivetrain was great! It was smooth, silent, and there was no slip whatsoever. We braced the front wheel against a wall and at only 24 volts and not even full throttle, it would spin the rear wheel on the ground. We disassembled all of the temporary setup so we were back to a bare frame with the new Drivetrain, and we started brainstorming on battery ideas. We concluded that we can likely fit 20 12v10.5AH batteries on the scooter, working out to either 5 banks of 4 or 4 banks of 5 (48 or 60 volts). We will start construction of the battery boxes during the next work session! |
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Written by Dr. Rob Prins
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Monday, 24 November 2008 09:39 |
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Although we knew from physics class, academic literature, and those cool "shake" flashlights that the concept worked, it was a good moment when we were actually able to see what we expected to see. |
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