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A Bit of Lean. . . (archive)

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Posted by Chris in Atlanta on August 01, 2000 at 07:36:15:

In Reply to: Mark & Chris - suspension question posted by Mike Zamarocy on August 01, 2000 at 03:32:53:

I don't think that your shock/strut values will help much if any with lean. You can certainly stiffen up the front sway bar to reduce this. I have seen pics of my car autocrossing. Looked like your car when I was running my stock bar (which, if you have a Dinan bar, was a bit softer than yours is now). My car leans much less, now, when I have my Dinan bar set to max (hole furthest in).

But then, there is an argument to be made to keep your car where it is. Lean is bad, but not all that bad - tire grip is the key, and is a very complex situation.

I am suprised that your front bar is set to the middle. The standard solution is to go minimum sway bar up front, to reduce understeer. Max will do the same thing on this car, which is very rare, and at the same time reduce lean.

Stiffening this up will screw up your other values, of course. . . You will have to adjust tire pressures mostly. You may also need to do the struts & shocks - I don't know.

Once again, my car: Dinan bar at full stiff, front struts set to max compression and near max rebound, rear shocks set to max rebound and 4 clicks (of 12) from min compression. 59 psi front 53 rear. This setup gives me just a hair of oversteer.

Looking at this pic from Willow Springs, would you say I should stiffen up the front socks, or adjust the front bar to full firm? At this event I had the front KONI's set to between 1/2 to 3/4 firm, and the bar set to medium. I was not having problems with understeer, nor oversteer - the car felt neutral, but as you can see, it was leaning perhaps too much?

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