| 摘要 |
A front wheel drive system (10) for a bicycle which can be installed on a bicycle to drive the front wheel by rocking the handlebars back and forth. A chain positioning and support mechanism is attached to the handlebar (18) of a bicycle. The handlebar is attached to a rotatable outer sleeve of a handlebar stem (12). A rocker switch in the outer sleeve selectively locks the handlebar relative to the stem or allows the handlebar to rotate about the stem. A chain (24) attached to the chain positioning and support mechanism engages a freewheel attached to the front hub (14) of a bicycle and terminates in a spring (22) connecting back to the chain positioning and support mechanism.
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