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02-12-2008 #1Registered User
- Join Date
- Sep 2007
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- 424
IFS theory: most predictable rather than "fastest"?
Anybody have any thoughts about front suspension geometry and roll centers in regards to predictability gains?
Of course the roll-center needs to move as little as possible. But what about past that?
There have been a lot of trees cut down over the issue of CG versus roll center. Conventional thinking seems to indicate that the RC shouldn't be too far below the CG so that the chassis weight has less leverage on the front suspension (in terms of body lean). Some say the RC should be like 3-4 inches off the ground at ride height.
But the longer I think about it, the more it seems like you'd WANT the RC notably lower than the CG, at least if body lean wasn't too big of an issue. My reasoning thinks you'd probably be able to feel/predict what the front end is doing a lot better that way.
So if the CG, sway bars, and track width were already keeping the body lean under control all the way up to the limits of adhesion, then wouldn't it be better to lower the RC a bit more than conventional wisdom indicates?