Power is put on the steering wheel to save electricity, and it is reasonable to put it on the wheel near the center of gravity. When going uphill, the gravity line of the center of gravity moves backward, the adhesion of the front wheel decreases, and the driving force decreases and slips.

(1) According to p = f v (p is motor power, f is driving force, and v is rotating speed), when the power, that is, motor power, is constant, the rotating speed v is very small at the beginning, so the driving force f is very large at this time;

(2) According to m = f r, we can know that the wheel radius r is constant, and f is very large when starting, so the torque at this time is very large;

(3) According to m = (9549 p)/n, where n is the wheel speed, the power P is constant and the torque M is very large. In this case, if you want to start smoothly, you need to have a very small speed n. ..

The main function of extended data transmission is to change the transmission ratio from the engine to the driving wheel, which directly affects the speed of wheel rotation.

Knowing the transmission ratio i=n 1/n, where n 1 is the motor speed and n is the wheel speed, the deformation results in n = n 1/i. At this time, it is necessary to make n very small, and the transmission ratio I can be increased under certain conditions of n1.

This is that the adjustment of transmission ratio is mainly realized according to the gear meshing of different teeth of the transmission.

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