geometry
03-10-2006, 04:29 AM
#11
True hence the word optimum 
The back is better in corners but wears the tyres more than HUK would like.
The front is more about comfort to stop tramliningg and hence not so good for turn in.
Like I say - a compromise!
The back is better in corners but wears the tyres more than HUK would like.
The front is more about comfort to stop tramliningg and hence not so good for turn in.
Like I say - a compromise!
03-10-2006, 05:49 AM
#13
Originally Posted by Dembo,Mar 10 2006, 02:30 PM
I always thought negative camber made tramlining worse, but I couldn't tell you why.
"Optimum" changes more rear camber for better grip in the corners and neutral camber on the front to stop tramlining.
03-10-2006, 10:08 AM
#14
IMO, it's the greater rear toe-in & front castor that add to the alleged stability.
I don't like the "optimum" settings.
Heavy, artificially rubbery steering & reduced throttle steering are not good.
Main thing is though, to ensure symmetry across the car - keep it as equal & opposite as you can get.
I don't like the "optimum" settings.
Heavy, artificially rubbery steering & reduced throttle steering are not good.
Main thing is though, to ensure symmetry across the car - keep it as equal & opposite as you can get.
03-10-2006, 12:41 PM
#16
What do the serious trackday people do? I did a search on this forum, and the impression I got from a few US threads was that they were running settings closer to the "optimum" settings (i.e. -1 on the front, -2 on the back), and yet we're saying that -0.5 on the front gives better results. Also from what I've seen (and not just on my car) the S has a tendancy to wear the outside edges of the front tyres, to which I would have said you need extra negative camber to overcome that.
Another thing that bugs me slightly is the double wishbone setup. With a single wishbone, the loaded wheel gains negative camber as it's pushed up into the car which helps keep the tyre flatter on the road. With double wishbone the wheel doesn't do that, and again you're more likely to wear the outside edges as a result, and you have less grip. I can see that it's better under braking or over bumps, but is it better on cornering?
Another thing that bugs me slightly is the double wishbone setup. With a single wishbone, the loaded wheel gains negative camber as it's pushed up into the car which helps keep the tyre flatter on the road. With double wishbone the wheel doesn't do that, and again you're more likely to wear the outside edges as a result, and you have less grip. I can see that it's better under braking or over bumps, but is it better on cornering?
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