BOSCH E-Bike Drive Unit Noises without chain.mpg

Noises of the BOSCH E-Bike Drive Unit without chain. When the spider is turned backwards, the Drive Unit acts as generator (recuperation) and turns the system on.

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Audi e-bike Official - A bicycle that runs at 80 kmph HD
~ Audi e Bike - A bicycle that runs at 80 kmph .. .. .. !! Audi unveiled an extremely emotion-inspiring sports machine, the Audi e-bike Wörthersee at Wörthersee in Carinthia, Austria. The prototype cycle combines an electric drive and muscle power. Head of Design Wolfgang Egger comments: "As a high-performance e-bike for sports and trick cycling, it features the Audi core competences of design, ultra, e-tron and connect." The Audi e-bike Wörthersee puts in its first major appearance at this year's Wörthersee Tour, the 31st meet for Audi, VW, Seat and Skoda fans; trial biker Julien Dupont and downhill specialist Petra Bernhard will demonstrate their stunts and streetbike skills. As a high performance e-bike for sports and trick cycling, it features the Audi core competences of design, ultra, e-tron and connect." Wolfgang Egger, Head of Design said. The bike looks dynamic, but is also designed to be functional. All design elements are secondary to the technical features. The airy frame boasts a low centre of gravity and a compact overall volume. In this way, the e- bike is agile. The lithium-ion battery is incorporated into the frame and needs 2.5 hours to fully charge and is easily replaceable. The frame and the swinging arm that holds the back wheel are made of carbon fibre-reinforced polymer (CFRP). The same material is used for the 26" wheels, which feature broad flat spokes for an optimized transmission of pedal power. The signature Audi LED lights are also present at the front and back of the bike. For extreme tricks and stunts the seat can be lowered to run flush with the frame itself. At the press of a button, the seat then rises up and the biker can adopt a comfortable position. The electric motor is located at the lowest point on the frame and drives the bottom bracket shaft directly. The maximum torque delivered to the rear wheel is 250Nm. The electric motor generates a maximum output of around 3bhp. The complete bike excluding electrical components weighs 11kg.





Ditch the Chain, a New Type of Bicycle Is Here
Trek Bicycle is on the cutting edge of a movement to bury the finger-pinching, pants-munching, rust-prone sprocket and chain, and usher in a new era of belt-driven bikes. (Nov. 18)





Tecnologia Alfine - Cubo de Marcha Interna





Fast 2WD Electric Bicycle - Top Speed 50mph
Fast custom built 2 wheel drive electric bicycle by CORBINFIBER electric cycles. capable of high speeds on level roads with 37 mile range. Charge time is 2 hours. He's not selling the fast ones, only street legal ones. His contact info is below. https://www.facebook.com/pages/CORBINFIBER/274116565952136?ref=br_tf If you want to try to build one of these on your own here is a good resource http://endless-sphere.com/forums/ Also on Facebook https://www.facebook.com/groups/125035107565566/ A couple things he mentioned that was not in the video. future plans are CARBON and HEMP fiber monocoque frames and upgraded hydraulic brakes with additional RE-GEN braking Current battery weighs 28 lbs, total bike weight with battery is 80lbs. with duel electromagnetic hub motors. Read this before attempting to build one of these. http://www.electricbike.com/drawbacks/




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