When the clutch is not disengaging fully and provides some difficulty in changing the gears then this defect is called clutch drag.
There are various possible causes of black exhaust smoke, almost all of which should let you know that your engine is burning too much fuel. Check all of your vehicle\'s intake components, including your air filter, sensors, fuel injectors, and fuel-pressure regulator. One other cause could be a clogged fuel line.
Most commonly used gears as Sun gears are Spur gears and Helical gears. In some cases Epicyclic Gear trains with Bevel Gears are also used.
Auto-Rikshaws have engine directly connected to rare end wheels. There is no need of differential gears. But some Auto-Rikshaws are not driven by the engine directly instead they use a differential gear. The entire differential mechanism is inside the gearbox unlike other vehicles.
Spur gears in sequential arrangement are used inside a gear box of a motorcycle. While chain and sprocket are engaged to transmit power from engine to the rear wheel.
There is only one differential working in a car, however in a differential 5 bevel gears are used, one is mounted upon the shaft, the 2 are mounted upon the 2 shafts connecting to the rear wheels, the other 2 gears are so arranged so that they mess with the gears upon the wheel shafts.
Differential mechanism
746.2Watt
Rear wheel sprocket works under the principle of ratchet and pawl.
Improving the surface finish by Polishing & providing residual stress by Shot peening.