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Thread: Major oversteer. Need help.

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Posts: 1-10 of 23
2011-10-02 00:44:58
#1
Major oversteer. Need help.
Okay. I have been to 4 autox. This last one i went to gc/agx 350/250 from rm/agx 325/250. So basically the same

My alignment was improved by .4* of camber.

I have an st bar with stick front.

First autox's the rear rotated nicely. Now with everything essentally the same it oversteers a lot. I mean you have to really be smooth and cautious. Too much so. (car was driven by very good instructor who agreed).

We both think this is to much oversteer to correct with tp. Any ideas? I know a front bar could help but i prefer to fix this problem at the rear since the front is pretty good.

Agx used to be set at 8. Backed them off to 6. Help minimally. (only adjust how spring rate is applied of course not the rate itself.


Appreciate any help. Most go with more bar/ no front bar so i am at a loss as to the sudden oversteer. Thanks
2011-10-02 00:57:42
#2
Sounds like maybe the camber change explains the extra grip up front? Try a tad more in back now to match?
2011-10-02 01:45:12
#3
Originally Posted by BenFenner
Sounds like maybe the camber change explains the extra grip up front? Try a tad more in back now to match?


That was my first thought as well. I double checked and the alignment shop actually dropped the neg camber .2*. So i think i will increase the neg camber in the rear to -1.4* or so. Though the change is so dramatic i am surprised it csn make such a dif. Though the added grip up front would exacerbate the less camber in the rear.
2011-10-02 01:55:48
#4
TO get rid of oversteer, you need to either stiffen the front or loosen the rear.

Take that mindset and do what you need to do.
2011-10-02 01:59:11
#5
Yeah. I was just suprised to have a common workable set up acting so strange. I will adjust the alignment first and go from there. Prob a front bar. But i think the alignment had a much greater effect than i thought it would.
2011-10-02 02:05:40
#6
My suggestion would be to get your own Toe-In plates and a camber gauge and do your own alignments. You will save quite a bit of money in the long run. It may not be perfect but you can get pretty damn close.
2011-10-02 03:50:02
#7
Remember a good rule of thumb in your case would be to increase understeer. If you try to get ride of the oversteer then you will be slower. what about tire pressure?
2011-10-02 04:52:49
#8
You don't have to turn up the rear that high.... b13's tend to oversteer with the rear turned up and front down... that's more like a drag setup. i know its just rebound, but it makes a difference.

Turn the rear back down to 1 or 2 and the front to maybe 1, 2 or 3 depending on what kind of suspension components you have, it will introduce more understeer. Play with it and come back.

It will still oversteer under hard cornering but it will be a little more predictable and manageable... I know exactly what you are talking about
2011-10-02 12:30:33
#9
I assume you have adjusted tie pressures accordingly also right?
2011-10-02 17:58:14
#10
If it were my own car I would play with your coilovers dampner, assuming you have it, make it soft, a firm rear end will kick out and bounce around. Also try more camber in the rear so when your car sways youll have more contact patch in the tire, deflating a tire can work, but it also comes down to the correct tire choice in general.
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