| 摘要 |
PURPOSE: A bicycle capable of adjustment of a caster angle is provided to effectively prevent the chain from being deviated during speed change or off-road driving. CONSTITUTION: A bicycle capable of adjustment of a caster angle comprises a body frame(10), a drive sprocket(S), a head tube(14), a top tube(11), and a caster angle regulator(30). The regulator comprises a bolt rod whose one end is hinged on one of the head tube and the top tube, an adjusting nut which is screwed to the bolt rod, an adjusting tube in which the adjusting nut is installed in one side to be controlled in the axial motion, and a flange rod whose one end is inserted to the other side of the adjusting tube and the other end is hinged to the other one of the head tube and the top tube.
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