Quote:
Originally Posted by McRussellPants
You'll like the consistancy more than any sort of jerk off pride about calculating roll center and posting it on line.
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and i was going to post something about roll centers, now i'll sound like a jackass. oh well, i'm not calculating shit.
when you lower a car the roll center drops more than the CG. since the car rotates around the roll center that gives the mass of the car a longer lever arm to act on during cornering. there's a good diagram here since you're an engine guy.
http://e46m3performance.com/tech/transfer/pg-2.htm
you can get the geometry back into shape by using modified lower ball joints. you can either get full arms like SPL's or some other company (orange someting or battle version maybe) or using replacement ball joints from moonface or hardrace. i haven't seen any proof that the replacement ball joints are setup properly to fix the problem, so be careful.
fixing the roll center will limit body roll without affecting the suspension travel or ride like stiffer springs would. stiffer anti-roll bars would help to but that was already covered so i'll leave that alone.