1.To calculate the ratio of transmission between the first wheel and the last wheel of a belt drive, we must multiply the ratios of transmission of the first pair of wheels and the second pair of wheels:
⇒N4/N1=D1xD3/(D2xD4)⇐
2.We can use various systems to change the direction of rotation or the axis of rotation in a belt drive.
3.Worm drive: reduces the speed of a rotary system very effectively. A worm drive has two parts: a worm shaft and a worm gear.
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