| 摘要 |
The bicycle is the technical solution where pedal cranks are located at the end of shaft, which is put on the bearings in the caps of the crossbar and which passes by back wheel hub. On one crank, there is the converter, which is connected via the chain or spur belt with the controller (sequence switch), which is located in the bearing liner in the back frame fork. On the back frame fork of bicycle there is the inside converter, which is connected by inside chain or spur belt with the pinion, which is fasten together with the back wheel hub. |
