Code Letters, Transmission Allocations, Ratios and Equipment

Code Letters, Transmission Allocations, Ratios and Equipment


























Overall Transmission Ratio i, Calculating

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