First gear engages with second gear

The utility model discloses a first gear engages with second gear, , change the axis flower disc including pedal driving, axis flower disc chain drive connects the rear wheel flywheel, still includes the magnetic force booster of compriseing interior magnetic disc and outer magnetosphere, interior magnetic disc and axis flower disc be coaxial, and to feel at ease the dress epaxial in, and interior magnetic disc comprises spider and outer loop, the interior up time needle of the outer loop interval many internal magnets that the peer is outside of arranging that slope, outer magnetosphere is fixed on the frame and the cover establish including on the magnetic disc, outer magnetosphere is the up time needle slope interval many external magnets of arranging in for cyclic annular circle, external magnet and internal magnet relative setting the at the same level lie in same straight line when both meet. The utility model discloses because the well rotation of axes is followed to interior magnetic disc, outer magne