| 摘要 |
PURPOSE: A bicycle with a pair of shifts is provided to enable instantaneous shift and free operation and easily run on a steep slope. CONSTITUTION: A bicycle with a pair of shifts comprises a bidirectional control pipe. The bidirectional control pipe is installed on one of both handles(3,4) and performs shift. If the handle rotates to change a stop button from a low speed position to a high speed one, a spring connected to a cable stretches, an integrated control pipe moves between two gears, a protrusion connected to the control pipe is inserted into a hole to change to a high speed gear. |
