Steering self centring (or self righting)is mainly produced by what?
Answers:
It is called Steering Axis Inclination (SAI). SAI is the measurement in degrees of the steering pivot line when standing in front of the vehicle. This angle, when added to the camber forms an included angle that causes the vehicle to lift slightly when you turn the wheel away from a straight ahead position. This action uses the weight of the vehicle to cause the steering wheel to return to the center when you let go of it after making a turn. Because of this, if the SAI is different from side to side, it will cause a pull at very slow speeds. The most likely cause for SAI being out is bent parts which must be replaced to correct the condition. Not sure if you are trying to adjust this your self. If you are good luck. Adjusting SAI requires a trained technician and the correct equipment
Caster in the wheel angle.
Center of tire is behind the axle
The ackerman principle .
Toe-in or camber probably.
caster angle if all other steering geometery is correct toe in or out plus camber can have an effect akerman angle also but this is norm correct unless chassis is twisted but caster angle is designed to promote straight ahead stability
It has just dawned on me that markp might be using Yahoo answers to do his auto repair shop homework.
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