Cool Stuff: The Audi e-Bike Prototype

From Carscoop:

The e-bike is a futuristic looking study sporting 26-inch wheels made from carbon-fiber-reinforced plastic (CFRP) that weigh only 600 grams (1.32 lbs) and an ultra-light carbon-fiber frame that tips the scales at an impressively low 1.600 grams (3.53 lbs).

The bike can be driven by pedals, an electric motor producing up to 2.3 kW (3hp) and 250Nm, which is located at the lowest point on the frame, or a combination of both.

A lithium-ion battery that weighs 5 kg (11.02 lbs) is housed in the frame. Its capacity is 530 Wh and can be fully recharged from a 230 V supply in two and a half hours. The entire bicycle, including the battery, weighs 21 kg (46.3 lbs).

The rider can choose between five programs. Aside from the pedal-only 'Pure' mode, there is the 'Pedelec' mode where the rider is assisted by the electric motor allowing for speeds of up to 80 km/h (50 mph) for 50 to 70km (31-44 miles).

There is also the pure electric 'eGrip' program and the 'Wheelie' mode where the electric motor assists the rider when the front wheel is in the air. Finally, there's the training mode, in which case, the electric motor kicks in to maintain a constant speed such as when riding into the wind or up a hill.

Other highlights include the nine-speed hydraulically actuated gear shift, two disk brakes that are also applied hydraulically, and an on-board computer located in the frame top tube.

(source: Carscoop)