A bicycle that runs at 80 kmph [Fwd; Sharon Rajkumar]

By on June 20, 2013

A bicycle that runs at 80 kmph

Audi e-bike: A bicycle that runs at 80 kmph
The prototype cycle combining an electric drive and muscle power along with tech used on Audi cars was showcased at the Worthersee Tour in Austria.

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.

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The uncompromising dynamism of the bike prototype is fully visible at first sight. “When developing the Audi e-bike Wörthersee we drew on motor racing design principles for inspiration,” explains Hendrik Schaefers, one of the designers at Concept Design Studio Munich. “The e-bike appears incredibly precise, highly emotional and strictly functional. Indeed, the design effort focused on its function as a sports machine. All design elements are thus firmly aligned to the technical features.”

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The uncompromising dynamism of the bike prototype is fully visible at first sight. “When developing the Audi e-bike Wörthersee we drew on motor racing design principles for inspiration,” explains Hendrik Schaefers, one of the designers at Concept Design Studio Munich. “The e-bike appears incredibly precise, highly emotional and strictly

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The frame and the swinging arm that holds the back wheel are made of carbon fiber- reinforced polymer (CFRP). The same material is used for the 26” wheels, which feature an innovative “Audi ultra blade” design with broad flat spokes for an optimized transmission of pedal power. “We were able to demonstrate with the choice of materials just how closely design goes hand in hand with expertise in ultra lightweight construction,” Hendrik Schaefers comments.

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Homogeneous LED light strips round out the frame and create the immediately recognizable Audi light signature. 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.

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Cycling modes and countless other functions can be set using the touchscreen on-bike computer. The cyclist’s smartphone hooks up by WLAN to the computer – when you start cycling, for example, the immobilizer is deactivated. Video images of the trial drive or of a trick, as recorded via the in-helmet camera, are uploaded to the Internet in real time via your smartphone.

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Each trick performed successfully is then awarded success points, and as the number of points awarded grows, the cyclist receives awards and the challenge level rises, too. The rankings table in the Internet means you can measure yourself against other bikers and your friends. And where they happen to be comes to you via Facebook status reports that pop up on the Audi e-bike Wörthersee display.

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The cyclist can choose between a total of five cycling modes – pure muscle power, the electric motor alone, or pedaling supported by the electric motor. In the “Pure” mode, the drive power is purely the product of the cyclist’s legs, while in “Pedelec” mode you are supported by the electric motor that then makes speeds of up to 80 km/h (50 mph) possible and gives you a range of 50-70 kilometers (31-44 miles).

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When performing wheelies, an electronic control system supports the rider when performing tricks and back-wheel biking. Different modes can be set using a smartphone or directly on the e-bike – either “Power Wheelie” mode, with adjustable wheelie angle for less skilled bikers or “Balanced Wheelie” mode for sporting challenges.

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In “Balanced Wheelie” mode, the electronic control system maintains the rider’s balance, by compensating the biker’s movements forwards or backwards via the electric motor.

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This means the rider can influence the bike’s speed by shifting weight: if you lean forwards the bike picks up speed, and if you lean back it slows. You select “Training” mode if you want to keep your performance constant for training purposes.

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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 250 Nm (184.39 lb-ft).

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