Motorcycle with pedals

A motorcycle with pedals comprising:

• a frame with a swing arm extending from a frame pivot shaft to a rear axle, the swing arm pivot shaft being positioned at a jack shaft,
• the jack shaft turning two sprockets and a free wheel sprocket at the pedal,
• a sprocket aligned on the jack shaft for power transmission from a prefabricated motorcycle engine and a
• sprocket aligned on the jack shaft for power transmission to the rear wheel sprocket,
• a shock spring from the swing arm to the frame, to provide swing arm flexure about the jack shaft axis from rear wheel road induced perturbations,
• two pedals, one on each side of the frame, coupled to a crank spindle via cranks from the pedals to the spindle,
• the crank spindle of sufficient length to extend the cranks and pedals out from interfering with engine lateral extension dimensions, allowing the prefabricated motorcycle engine to be positioned within a volume circumscribed by the cranks to provide the lowest center of gravity without interfering with motion of the pedals,
• power transmission means from a crank spindle sprocket to an aligned free wheel sprocket coupled to the jack shaft,
• power transmission means from the prefabricated motorcycle engine to a sprocket on the jack shaft aligned to engine sprocket,
• power transmission means from the jack shaft sprocket aligned with a rear wheel sprocket,
• whereby pedal power or prefabricated motorcycle engine power or both concurrently can be used to provide motorcycle propulsion.