| 摘要 |
An occupant-propelled vehicle and a manually operated drive system therefor are described. Typically pedal operated, the drive system provides a substantially linear output torque, and makes it possible to apply at least twice the driving power to the vehicle wheel or wheels, for a given manual power input, than has heretofore been possible with pedal operated drives. The pedals or the like are arranged for substantially rectilinear movement and each drives the input shaft of a change speed transmission via the combination of a constant force spring returned reel and a one-way clutch. In preferred embodiments, two pedals can be operated independently, with constant torque supplied independently to two drive wheels of the vehicle. |
