Code Letters, Allocation, Ratios and Equipment

Code Letters, Allocation, Ratios and Equipment






Calculating Overall Transmission Ratios "i"

Example:






i = Z2 : Z1 (Z1 = No. of teeth drive gear, Z2 = No. of teeth 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