| Differential |
The differential is a unit that takes the power of the driveshaft and passes it to the axle. It is what allows both rear axles to turn at different speeds when negotiating turns to prevent scuffing or skidding. |
| Driveshaft |
The driveshaft is the shaft connecting the transmission output shaft to the differential pinion shaft. It's job is to transmit power from the transmission to the differential. |
| Gear Ratio |
The relationship between the number of turns made by the driving gear/pulley/disc to produce one full rotation of the driven gear/pulley/disc. |
| Gearbox |
A unit in the drivetrain consisting of an input shaft, a system of gears and an output shaft. |
| Pitch Radius |
The distance between the centre of the pulleys to where the belt makes contact with the grooves.
The ratio of the pitch radius on the driving pulley to that of the driven pulley determines the gear. |
| Planetary Gear |
A gear used as an intermediate transmission |
| Slipping Clutch |
To slip the clutch is to operate the cluch in a way that is partially disengages, this causes a lot of wear on the clutch. |
| Suspension System |
The suspension system cushions the body of the vehicle from the bumps and shocks when driving over uneven/irregular surfaces. The suspension itself is an assembly of shock absorbers, joints, arms and torsion bars. |
| Torque |
Torque is a twisting force. It is measure in feet-pound or pound-feet depending on who you talk to. One foot-pound of torque is the twisting force produced when a one pound force is applied at the end of a one foot long lever. |
| Torque Convertor |
A unit that transfers engine torque to the transmission input shaft, it can also multiply engine torque. |
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