[s-cars] Understeer vs. oversteer?

CaptMagu at aol.com CaptMagu at aol.com
Thu Nov 28 09:15:22 EST 2002


In a message dated 11/27/02 1:28:36 PM, tedebearp at yahoo.com writes:

<< that seems a little odd, but the UrS4/S6 does have a peculiar front
suspension that uses the antiroll bar as a tension strut rod to provide
fore-aft location of the control arms.  the torsen center differential
may have an effect, too. >>

Teddy

I don't think that this reverse antiroll tuning is just something that
applies to our beloved piggy cars. My reference is called High Performance
Handling Handbook by Don Alexander. On page 46, he states "In this instance,
adding a stiffer front antiroll bar, which would typically increase the
extreme understeer, actually reduces the understeer by reducing the body
roll-induced camber change."

The key here is to prevent, as much as practical, this body roll-induced
camber change for whatever type of car. If you're talking about a pure
race/track car then you can engineer most of this with spring and shock
tuning(antiroll bars are still used on a lot of race/track cars). But, if
you're still driving your car on the street, you can use antiroll bar tuning
to help in the same way without sacrificing all your ride quality.

Hap, body roll-induced camber changes at a minimum in Evergreen, Maguire



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