Work out the math and you can find out. Just take the rear end lift height divided by the wheel base and take the inverse tangent of that ratio, so for a 1" lift on a SWB truck:

InvTan(1/103) = ~1/2 degree change in the front end caster angle.

I'm working on a variation of the center spring idea with a tapered air bag. The idea is to inflate it to restore ride height with heavy loads then deflate it for empty use.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code