Calculating Transmission Ratio i

Calculating Transmission Ratio i

Example:






i = Z2 : Z1 (Z1 = Number of teeth on the drive gear, Z2 = number of teeth on the driven gear)

iG = gear ratio = ZG2 : ZG1 = 33: 40 = 0.825

iA = axle ratio = ZA2 : ZA1 = 72: 20 = 3.6

itotal = total ratio= iG x iA = 0.825 x 3,.6 = 2.97