PURPOSE: To provide a magnetic driver, which operates on an utterly new principle without needing power or with small power, and a bicycle making use of this.

CONSTITUTION: This is equipped with a rotor 2, which is born with a bearing 1, the first permanent magnet 3, which is arranged coaxially on the face of this rotor 2, a bearing means 5, which supports the rotary shaft 4 crossing on two levels one part of the locus of the rotational shifting of the first permanent magnet 3 rotating together with the rotor 2 rotatably in radial direction of the rotor 2, and the second permanent magnet 6, which is fixed to the rotary shaft 4 in the vicinity of this permanent magnet besides being on the locus of the rotational shifting of the first permanent magnet 3.