Principle of stepless speed regulation of Wuyang Honda scooter

The stepless speed change of scooter is to adjust the speed by changing the diameters of the sliding surfaces of the front driving disc and the rear pulley of the transmission system, which is equivalent to switching between low gear and high gear of a geared engine. When the speed is low, the sliding surface of the front driving disc is smaller and the sliding surface of the rear pulley is larger, which is equivalent to the low gear of a geared vehicle. After increasing the throttle speed, The roller in the driving wheel is thrown out under the action of gravity, which makes the diameter of the driving disc larger and the diameter of the rear pulley smaller under pressure, which is equivalent to the high-speed gear of a geared engine, that is, the big gear drives the pinion or the number of teeth of the driving and driven gears is equal.

The dynamic diagram below is the reason for the stepless speed change of pedal motorcycle, which can be used for reference.