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Old 03-09-2007   #45 (Post Link)
Trailbraker
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Join Date: Mar 2005
Location: Ireland
Posts: 4,793

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156 GTA

Re: Front anti roll bar diameter?

Heres a clip of my car soon after I had the ARB fitted, just after I had "run them in" at the Ring, running on stiffest rear ARB setting, and rear dampers on stiffest, front on med/softish.

http://videos.streetfire.net/video/5...5f007c0df3.htm

To be honest it still feels very stable but cornering speeds are noticably higher than without. The extra turn-in sharpness is helpful rather than a challenge.
Almost certainly my stiffer 10kg front springs are keeping the balance slightly away from any oversteer, but I would imagine somebody with modest 8Kg front springs and the rear ARB on softest would have a similarish balance.

There is one tricky downhill off-camber double right on that circuit approached at about 110 then hard braking - that used to be scarier without the stiffer rear ARB, since it was soo easy to understeer way off-line. Now the car generally feels much more neutral there. FWD cars normally wash-out a little on off camber corners.

Now for VERY fast off camber corners like "miss-hit-miss" at the Ring in 4th gear I would agree that you DO have to be very aware of the rear and when you really commit to the corner you don't want to back off ignorantly..
That said, that probably is one of the trickiest sequences of corners on any race track, sorry public road

Cheers,
TB

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