| 摘要 |
A bicycle drive system includes a front gear face, a rear gear face, a front guide assembly, a rear guide assembly, and a drive shaft coupled to a rear-suspension frame via a rear hub and a crank spindle. The bicycle drive system operates independently of the frame. Shifting from one gear to another is controlled by a shift controller. Each shift of the shift controller shifts both the front and rear guide assemblies at the same time. The shift controller is preferably coupled to the front and rear guide assemblies via a cable system.
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