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The X-Effect Of Sway Bar Tuning

Posted: Thu Dec 04, 2008 6:53 am
by FJCamper
Image

Okay. They're really not sway bars, but anti-roll bars. Shocks/dampeners, to-ma-to/to-mah-to.

Everybody understands that these simple devices resist body roll from side to side, but that they have an exotic X-effect is rarely a subject.

The front bar, for instance, throws weight to the rear, and the rear bar throws weight to the front, in an X-pattern. Left front wheel to right rear wheel, etc.

If a front wheel is lifting right off the road in a tight, high-G corner, you "push" it back down by increasing the rear roll stiffness. And vice versa.

FJC

Posted: Thu Dec 04, 2008 10:53 pm
by DORIGTT
You're my hero, you know that?

Didn't Audi have an active weight transfer system that helped reduce dive and squat for this?

Posted: Fri Dec 05, 2008 5:14 am
by caslor
this is good or bad ?? sorry for that silly question :( but havent understand if that helps or not the car.... (english are not my main language )

Stability

Posted: Fri Dec 05, 2008 5:22 am
by FJCamper
Hi DORIGTT,

To be honest, I don't recall all the Audi tricks, but with that bunch anything was possible.

In my experience, most VW people use sway bars that are too heavy. Of course, a 22mm bar bent a certain way might act the same as a 19mm bar bent another way. And let's don't even get started on tuning with adjustable end links.

FJC