Manual transmission is the oldest type of transmission used in a vehicle. The transmission is connected to the engine through a clutch, where the clutch plays an important role while selecting the gears. The clutch is always on engaged position, It power is passed to the transmission through an input shaft that is separated from the primary cluster. But if disengaged (by pressing the foot pedal), it removes torque from the system.
The manual transmission is done by manually selecting or shifting the gear to obtain a desired speed or speed that suit the road condition. modern vehicle with manual transmission system have five or six forward and one reverse gears.
The cluster are made of gears which can be moved by engaging or disengaging the fixed gear on the secondary shaft, which can be found below the cluster gear, it is supported by rolling bearing in its casting.
How manual transmission system works
In the manual transmission, the input shaft has only one gear, that engages with a gear on the secondary shaft. The transmission is said to be neutral when the engine is running and the clutch is engaged. The gears in the primary and secondary shaft are not engaged with each other.
The gears on the primary shaft is slowed down by the synchronization mechanism when trying to shift into first gear, which is also aligned with gear on the secondary shaft. In manual transmission the current gear must disengaged before the next gear can be engaged. The rotational energy plays an important part by transferring the transmission to the axle(s) by the drivetrains, this occurs if the clutch is re – engaged. the speed of the vehicle can be maintained or increased using less power from the engine by using the progressively smaller ratio.