| 摘要 |
A freewheel mechanism for bicycles includes a side plate which is easily removed, allowing a sprocket to be quickly replaced without removing the body of the freewheel mechanism from the hub of the bicycle. Since they are not needed in racing, and to facilitate sprocket changes, ball bearings are not used. In the usual manner, a pawl means, and a pawl spring means are disposed between the sprocket and the freewheel body, allowing the sprocket to turn one way only in relation to the freewheel body.
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