| 摘要 |
A hub includes a hub shell having two flanges, a number of ratchet teeth formed in one of the flanges, a spindle rotatably engaged in the hub shell, a sleeve disposed on the spindle and having one or more pawls disposed on the outer peripheral portion for engagement with the ratchet teeth in order to drive the hub shell. The hub can be used in the front portion of the bicycle. The sleeve may include an extension for supporting the sprockets such that the hub can also be used in the rear portion of the bicycle. |
