M= inside the gear,M represents modulus in a gear
M represents the modulus.Z in the gear, the number of teeth in the gear, and the.x0d modulus is the ratio of the pitch diameter of the gear to the number of teeth
Large modulus, the size of the gear is large (in the number of teeth under certain conditions), the gear is also large, the power of the teeth can be greater
These figures depend on the wheelbase of the two axles and how much gear will be subjected to, so that the number and modulus of the teeth will be fixed!