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> Question for sway bar/suspension Guru's, show me your sway bars
rick 918-S
post Mar 12 2005, 07:33 AM
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My car has a push at high speed in tight corners. (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif) It wants to slide the front to the outside of the circle. I need to increase front grip. I was talking to a local car guy here and he told me I should has a big rear sway bar. (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) I tend to believe him. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) He used to work for the Archer Brothers in their race shop. (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) But maybe his theory doesn't apply to middle motor cars. (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif)

Who has experience with this? Show me your sway bars. Specially rear ones.

Oh ya, what about tire pressure.

I encourage long explainations. But talk to me like I'm a 4th grader. (IMG:http://www.914world.com/bbs2/html/emoticons/blink.gif)
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gaz914
post Mar 12 2005, 04:33 PM
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To complicate the matter a little more for you Rick, understeer can often be cured by adding a front sway bar - contrary to the advice above.

The reason is to do with the camber change that happens due to the body roll when cornering. Particularly with wider tyres, the tyre no longer sits "flat" on the road when the body rolls excessively and of course the grip generated is less.

By adding a sway bar to the front, the camber change may be limited to such an extent that the actual grip generated is better than before, despite the added weight transfer that should make less grip.

That is: PLUS grip via less camber change > MINUS grip via weight transfer.

If the front bar is too large (in combination with the spring rate) then more understeer may be the result.

In your situation, I would consider trying a small-ish (standard?) sway bar for the front first to control the body roll/camber change. If the understeer is not reduced sufficiently or is worse, then a rear bar would be needed, experimenting with and without the front bar connected.

GAZ

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rick 918-S   Question for sway bar/suspension Guru's   Mar 12 2005, 07:33 AM
Cloudbuster   The way this swaybar thing was explained to me was...   Mar 12 2005, 10:03 AM
rick 918-S   Ok that makes sense. As a note to the first post. ...   Mar 12 2005, 10:15 AM
SirAndy   easy to remember: - if the front is lose, tighten...   Mar 12 2005, 01:12 PM
trekkor     Mar 12 2005, 02:40 PM
trekkor   rear is stock bar, 150# springs on Koni's   Mar 12 2005, 02:41 PM
Aaron Cox   yup. im running a stock rear bar with 140's......   Mar 12 2005, 02:42 PM
Andyrew   Isnt a stock sway bar about 40 lbs of suspension f...   Mar 12 2005, 02:45 PM
trekkor   front http://www.914world.com/bbs2/...   Mar 12 2005, 02:46 PM
Aaron Cox   T dog, what t bars you running? i got me some 18...   Mar 12 2005, 02:50 PM
ArtechnikA   tire pressures: a fine-tuning device to be tinker...   Mar 12 2005, 02:53 PM
trekkor  
  Mar 12 2005, 02:57 PM
Aaron Cox   <...   Mar 12 2005, 02:58 PM
trekkor  
  Mar 12 2005, 03:02 PM
trekkor  
  Mar 12 2005, 03:05 PM
gaz914   To complicate the matter a little more for you Ric...   Mar 12 2005, 04:33 PM
jim912928   Rick, I put factory sway bars on my front and rea...   Mar 12 2005, 04:43 PM
rick 918-S   Thanks for all your suggestions. I'm taking it...   Mar 12 2005, 06:51 PM
Travis Neff   Here we go, 22mm Welt sway bar. Watch out for the...   Mar 12 2005, 08:31 PM
Travis Neff   uno mas   Mar 12 2005, 08:31 PM
Jeroen   Rick, if you have no swaybars and stock springs ri...   Mar 13 2005, 07:42 AM


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