Adjustable upper control arm opinions.

tcanin00 said

Thank you posting this, it's a lot to process and think about. What you said about trying to prevent rolling by using heavier sway and torsion bars really stood out. Theoretically it would work, but it would make the car miserable to drive on the street.

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I'm not saying that in all cases it would be necessary to run such heavy torsion bars and sway bars that it would be punishing to run the car on the streets. I'm just saying it might get there in extreme cases.

The big point I was trying to make is that jacking forces due to a high roll center can't be tuned out of the chassis. There is nothing that can be tweaked to resist them. The only option is to reduce the jacking forces by lower the roll center. The problem with a low roll center is a larger roll couple, but that can be resisted with springs and sway bars. At least until the springs and sway bars get to be too stiff.

A corollary to all that is, if you can reduce your CG, you reduce the roll couple as well. That's just harder to do, at least in my mind, once you get past aluminum heads and such. But if you can, then you would need less spring and roll bar.