| 摘要 |
A bicycle pedal crank mounting arrangement in which two wheel boards are fixedly fastened to two opposite ends of a bottom bracket bearing axle of a bicycle, two flat-plate counter weights are respectively fixedly fastened to the wheel boards at an eccentric location in reversed directions, and two pedal assemblies are respectively fastened to the flat-plate counter weights for pedaling by legs to rotate the wheel boards, the bottom bracket bearing axle and the chain wheel being mounted on the bottom bracket bearing axle.
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