Workshop Manuals Factory service & repair SEAT
01 Power transmission02 Running gear03 Body04 Power tramsmission05 Power unit06 Vehicle electrics07 Heating-ventilation-air conditioning system08 Automatic gearbox09 Engine, mixture preparation10 Engine, mechanics11 Manual gearbox12 Running gear - self diagnosis13 Heating and air conditioning14 Bodywork15 Heating, ventilation, air conditioning system
SEAT Leon Mk101 · Power transmission
01 · Transmission

0AF 5-speed manual gearbox (Ratio calculation): Technical data

Make
SEAT
Model
Leon Mk1
Section
Technical data › Overview - power transmission › Ratio calculation
Power transmissionRatio calculation
Ratio calculation
The gear ratio between two gears, is obtained by dividing the number of teeth on the driven gear (Z2), by the number of teeth on the driving gear (Z1).
Example:
   
Gears5. gearFinal group
driving gear (primary)
48 (Z1 = driving gear)15 (Z1 = driving gear)
driving gear (secondary)
39 (Z2 = driving gear)68 (Z2 = driving gear)

i = Z2 : Z1
In this way we can find out:
iG = Gear ratio = ZG 2 : ZG 1 = 39 : 48 = 0,813
iA = Transmission ratio for bevel gear assembly = ZA2 : ZA1 = 68 : 15 = 4,533
It is obtained by multiplying the gear ratios of the longest gear and the differential.
itotal. = Overall ratio = iG x iA = 0.813 x 4.533 = 3.685
   

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