| 摘要 |
<p>A direct drive bicycle comprising a main frame. Rotatably mounted within the main frame is a variable rate transmission unit (30) having rotatable input and output shafts. Rotatably connected to the main frame is a chain wheel (34). The chain wheel (34) is mechanically coupled to the input shaft (32) of the transmission unit in a manner wherein the rotation of the chain (34) wheel facilitates the rotation of the input shaft (32). <IMAGE></p> |
