| 摘要 |
<p>The transmission has an intermediate gear wheel, a satellite, and a central gear with a similar number of teeth. A large chain or belt driven gear wheel rotates on a central shaft and meshes with a roller bearing mounted gear, on which the pedal cranks are fixedl The first pedal crank has three holes, one for fixture to the central spindle, a threaded bore for the spindle of an intermediate gear, and a third bore with bearing for the spindle of the second pedal crank. The transmission has a variable crank length dependent on its position in the cycle.</p> |
