00-12
Calculations
Ratio i, calculating
Transmission ratio
Transmission
ratio = No. of teeth
driven gear : No. of teeth
drive gear
Ratios
Formula
iG = gear ratio ZG2 : ZG1
iA = axle ratio ZA2 : ZA1
iov = overall ratio iG x iA
Example:
5th gear
Final drive
Drive gear ZG1 = 37 ZA1 = 9
Driven gear ZG2 = 31 ZA2 = 35
Calculations:
iG = 31 : 37 = 0.838
iA = 35 : 9 = 3.889
iov = (31 : 37) x (35 : 9) = 0.838 x 3.889 =
3.259
Pa
ge 1 of 2 Calculations
11/19/2002 htt
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