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Re: DIY Front End Alignment
Found this post:
Quote:
Originally Posted by MARTINSR
On the front axle what it is for is to correct "caster".
The more caster the less rolling resistance and the more high speed stability you have.
When you just bolt the axle on and lower the front more than the rear your axle ends up leaning forward loosing caster. So adding the shims brings the caster to where it needs to be.
To give you an idea about caster, your truck would typically have 2-3 degrees positive caster. Stock it was probably 1 at the most. And on the other end is a Bonniville land speed record cars will have something like 18 degrees positive caster!
A BMW 3 series will have something like 4 degrees while a 7 series designed for high speed Autobahn driving it runs up to 7 degrees.
The less caster the more the tires "bite" around tight corners while the higher degree is for high speed straight line driving.
Brian |
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