The effect and influence of caster in car alignment


The main pin tilt-back is that when the vehicle is driven in a straight line and slightly deflected by an external force, the backward inclination of the main pin will produce the moment of the wheel turning in the opposite direction, which can automatically correct the wheel, which can ensure the stability of the straight-line driving of the vehicle. The higher the rear inclination, the higher the vehicle speed, the greater the stability torque, but the rear inclination should not be too large, otherwise, the steering will lead to heavy steering. The caster angle of the main pin is formed when the front axle and suspension are installed on the frame.

Caster in car alignment can divide into a positive caster and a negative caster. A positive caster is when the steering axis is in front of the verticle. In a road car, this would mean that the top of the Coilover would be pushed towards the rear of the car. The positive caster creates a lot of aligned torque (the force that straightens the steering wheel when you go forward) which improves the straight-line stability of the car.