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Originally Posted by starmember
you dont need castersims if you are lowering the back of the car
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I don't mean to contradict for the hell of it, but that's not entirely true.
You see on the torsion bar front beam, the top trailing arm is about one centimetre (almost half an inch) shorter than the bottom arm. It makes enough difference to make a noticeable effect on caster when the front is lowered a few inches by turning the torsion bars inside the beam - as on a sway-away or puma adjustable front beam. So lowering by rotating the torsion bars inside the front beam always causes an additional loss of caster
If drop spindles are used the problem is avoided.