I didn't think a beam axle vehicle would have problems with bump steer. As I understand it, with IFS, if you hit a bump at speed the suspension would 'collapse' then rebound, changing the camber and possibly the caster temporarily.

The fix involved removing the front springs and jacking the front end of the vehicle through it's full travel, measuring caster and camber at various heights. Then add/remove shims until the caster and camber changes are minimized. For F1 cars the suspension mounting points are adjustable to get bump steer to 0.

Brake squat can also be minimized the same way. You don't really want to go nose down when you hit the brakes because it unloads the rear wheels.

Unfortunately, I don't think that there is enough adjustment built into modern IFS systems to get true 'neutral' steering.

Sorry. That should say anti-dive instead of brake squat. Anti-squat is a slightly different thing.

Last edited by starkweatherr; 07/11/2008 8:41 PM.
195? Chevy 3800 dump truck
1973 Chevy C30 cab and chassis
1987 Suburban 3/4 ton 6.2L Diesel