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General repair instructions > < Transmission layout

A3 Mk2

Calculating ratio “i”
Calculating ratio “i”
Example:
   
6-speed manual gearbox 02Q6th gearFinal drive
Drive gearZG1 = 43ZA1 = 22
Driven gearZG2 = 35ZA2 = 60

   
i = Z2 : Z1Z1 = No. of teeth on drive gear, Z2 = No. of teeth on driven gear
iG = gear ratio= ZG2 : ZG1 = 35 : 43
= 0.814
iA = axle ratio = ZA2 : ZA1 = 60 : 22
= 2.727
iov = overall ratio= iG x iA = 0.814 x 2.727
= 2.220

   

General repair instructions > < Transmission layout