Types of Transmission Shafts
Transmission shafts are found in a manual transmission gearbox. The transmission gearbox transfer the high output of an engine of the automobile to the wheels. This process helps to reduce it to a compatible speed. The gearbox does this through a complex arrangement of gears and shafts.
The engine crankshaft of the automobile turns and creates power. The mechanical energy first goes through the transmission gearbox and then reaches the wheels. The first component to get this energy is the input shaft.
In a rear-wheel drive car, the input shaft is designed to lie along the same line as the output shaft, forming what seems like a singular component that is sometimes called a main shaft.
The counter shaft is placed parallel to the main shaft and is run by the input shaft through a pinion gear. In the manual transmission design, the gears are attached to the counter shaft permanently. In cars with front-wheel-drive, the input and counter shafts is actually the same thing. The counter shaft is also called a lay shaft.
The output shaft is the final component that carries the power out of the transmission gearbox and on to the wheels. A set of transmission gears are placed parallel to those that is on the counter shaft and arranged along the output shaft. Both output and counter shaft gears are meshed but the output shaft gears are not permanently attached to it. These are the gears that are shifted manually by the driver. The gear selected is fastened and rotates the output shaft along with it, while the others rotate freely until another one is selected.