| 摘要 |
A bicycle having pivotally mounted steps on alternate sides receives a rider straddling the bicycle frame while standing upon the steps. The rider shifts weight from side to side alternately driving each of the steps downward while the other step moves upward. A belt drive is attached to each step and through a pulley arrangement rotates a pair of drive pulleys on a rear axle to engage and alternately disengage the rear axle or the rear wheel for driving in a forward direction upon each down stroke.
|
