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UPenn Students Create Super High-Tech Motion Powered Alpha Bike
Posted By Lea Stewart On May 2, 2011 @ 2:47 pm In green technology,Green Transportation | 1 Comment
A group of five students from the University of Pennsylvania  have quite possibly created the world’s most technologically advanced bicycle. Over the course of a year, this genius crew engineered and fabricated the Alpha  bike, including all of its integrated electronic systems. The resulting design may look quite similar to market available high performance cycles, but hidden within the extra-strength frame , there is actually an internalized three-speed drive train, braking system, and high-tech electronics powered entirely by the bike’s motion.
Alpha ’s streamlined appearance was achieved by minimizing the gear and drive mechanisms using custom machined aluminum fittings. Not only does the system allow for stellar performance, the smaller size allows it to hide inside the frame and become protected from the elements. This equates to less maintenance, and a longer life for the fragile components.
The frame is constructed primarily from carbon fiber  tubes, creating a strong, lightweight frame that is able to hold extreme loads. These tubes were joined with intricate, machined aluminum lugs. Check out the video  below to see exactly how the parts fit together to create this incredible work of precision machinery.
Also hidden within the frame is a sophisticated electronic motoring system powered by the cycle’s motion . Wiring from the drive train is routed to a handle bar mounted LCD screen, allowing the rider to electronically switch the bike between a fixed-gear system and free wheeling modes. The screen also shows distance, speed, cadence, and has the ability to save the ride information on a removable SD card. For added safety, rear integrated LEDs  light the roadway. The power for all of these complex systems is generated by the rotation of the front wheel, which includes a drum brake and a dynamo  that charge two super capacitors. In order to keep the whole system in tune, suite of sensors and micro-controllers are placed throughout.
+ Alpha Bike 
Via DVICE 
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URL to article: http://inhabitat.com/upenn-students-create-super-high-tech-motion-powered-alpha-bike/
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 Email: mailto:?subject=http://inhabitat.com/upenn-students-create-super-high-tech-motion-powered-alpha-bike/
 University of Pennsylvania: http://www.upenn.edu/
 Alpha: http://www.thealphabike.com/ALPHA/ALPHA.html
 extra-strength frame: http://inhabitat.com/3d-printed-air-bike-is-as-strong-as-steel-but-13rd-the-weight-of-aluminium/
 carbon fiber: http://inhabitat.com/carbon-fiber-bike-weighs-just-six-pounds/
 Check out the video: http://vimeo.com/22966263
 http://www.vimeo.com/22966263: http://www.vimeo.com/22966263
 powered by the cycle’s motion: http://inhabitat.com/wireless-shadow-ebike-allows-cyclists-to-charge-their-phones/
 integrated LEDs: http://inhabitat.com/brilliant-led-backpack-lets-night-cyclists-signal-to-drivers/
 dynamo: http://en.wikipedia.org/wiki/Electric_generator
 + Alpha Bike: http://www.thealphabike.com
 DVICE: http://dvice.com/archives/2011/04/alpha-when-engi.php#1
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