US Patent 7753157 Motorcycle with pedals

The present invention presents a motorcycle with pedals comprising a light tough metal alloy or composite frame with a swing arm pivoting about a jack shaft to the rear axle, the jack shaft turning two sprockets and a free wheel with another sprocket at the pedal, a sprocket aligned on the jack shaft for power transmission from the engine and a sprocket aligned on the jack shaft for power transmission to the rear wheel sprocket, two pedals, one on each side of the frame, coupled to an adjustable length crank spindle, whereby pedal power or engine power or both concurrently can be used to provide motorcycle propulsion.