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Old 31-08-2007   #12 (Post Link)
Trailbraker
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Join Date: Mar 2005
Location: Ireland
Posts: 4,754

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156 GTA

Re: Front anti roll bar diameter?

I haven't had any issues with oversteer to date and want to change the handling bias substantially towords oversteer.
Given the big lump of a v6 up front, I will actually want to increase the overall rear stiffness and get more prolonged tail movement on hairpins and longer corners (when provoked).
I am also going to soften my front springs slightly, 10kg is too stiff in retrospect, the car is hugely stable but I don't need that now.

I have been following a mates development of a track car.
He started out with similar springs to an OEM GTA but on a much lighter car so effectively stiffer.
Over the last two years he has gradually stiffened the rear and moved to about 13Kg springs at the rear, of a 1000Kg car.
(850Kg race cars use 17kg or so)

As I was in every incarnation of my mates car on track I could see the gradual changes in handling towords nice oversteer.
This mates car is a dream to drive with a genuinely moveable rear, much more so than mine.
The thing is that FWD is so easy to catch oversteer in, and understeer robs so much time why not make the car more fun?

Right now I haven't ever felt that my car oversteers to much, except maybe on my earliest wet track days
Its still very friendly handling, I'm just going to move it towords a "sharper" trackday but still daily driver as opposed to the all rounder it is at the moment..

When its not my daily driver I might go a little radical..

I would love to be able to change the front neg camber on my car, but that doesn't seem possible

Cheers,
TB

Originally Posted by Pascs View Post
I assume once you have the stiff rear springs fitted you will need to soften the rear bar to reduce oversteer

I'm not a doctor - but I really do recommend braking later
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