Overall Transmission Ratio i, Calculating

Overall Transmission Ratio i, Calculating

Example:






I= Z2 : Z1 1

iG = gear ratio = ZG2 : ZG1 = 29 : 39= 0.744

iA = axle ratio = ZA2 : ZA1 = 61 : 18= 3.389

itotal= total ratio = iG x iA= 0.744 x 3.389= 2.521

• 1 Z1 = number of teeth on the drive gear, Z2 = number of teeth on the driven gear