Manual Transmission/Transaxle: Description and Operation

Transmission layout
Designation





1. Engine
2. Clutch
3. Transmission
4. Input shaft
5. Pinion shaft (output shaft)
6. Differential
Arrows point in direction of travel

Gear ratios





I - 1st gear
II - 2nd gear
III - 3rd gear
IV - 4th gear
V - 5th gear
R - Reverse gear
A - Final drive
T - Speedometer drive
Arrows point in direction of travel

Overall ratio "i", calculating





Example:
i = Z2 - Z1 1)
iG = Gear ratio = ZG2: ZG1 = 31: 37 = 0.838
iA= Axle ratio = ZA2 : ZA1 = 37:9 = 4.111
Overall ratio = total ratio = iG x iA = 0.838 x 4.11 1 = 3.444
1) Z1 = No. of teeth driving gear, Z2 = No. of teeth driven gear