| 摘要 |
Device for allowing a bike to have two-wheel drive. The invention relates to a device (set of components mounted mechanically) to allow a bike to have two-wheel drive, mainly on unstable ground. It consists of a power take-off (crown wheel) (9) secured to the rear wheel (2), of at least one chain (10), of a universal joint (27), (28), of a chain (24) connecting the universal joint jaw (28) to the front crown wheel (9'). The device according to the invention is particularly intended for all-terrain bikes. <IMAGE>
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