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> Caster settings, Explain please
r_towle
post Aug 12 2007, 01:25 PM
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How does the caster setting affect an AutoX car.

What is the best, and why.

Rich
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jhadler
post Aug 13 2007, 01:00 PM
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I'm pretty firmly in the camp of caster is good for autox. And more is better. Granted, there's such a thing as too much of a good thing. But the dynamic camber gain more than makes up for the reduced turn-in if that is the ONLY thing you're doing.

But it's all a system. Caster alone is not the end-all-be-all. You need to dial the rest of the car in around it. And a truly hot setup for autox, is not going to be a hot setup for track or street.

Having a lot of caster allows you to run less static negative camber, giving you a better contact patch for braking. Turn-in won't be as light, but the car will have more front end grip when you need it (mid turn). Turn-in then can be played with by toe, or spring rate, or just compensating with the steering nut. I think I'd rather have a little more effort for turn-in if it meant I could carry an extra .15 G around a turn.

-Josh2
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woobn8r
post Aug 13 2007, 08:54 PM
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QUOTE(jhadler @ Aug 13 2007, 01:00 PM) *

I'm pretty firmly in the camp of caster is good for autox. And more is better. Granted, there's such a thing as too much of a good thing. But the dynamic camber gain more than makes up for the reduced turn-in if that is the ONLY thing you're doing.

But it's all a system. Caster alone is not the end-all-be-all. You need to dial the rest of the car in around it. And a truly hot setup for autox, is not going to be a hot setup for track or street.

Having a lot of caster allows you to run less static negative camber, giving you a better contact patch for braking. Turn-in won't be as light, but the car will have more front end grip when you need it (mid turn). Turn-in then can be played with by toe, or spring rate, or just compensating with the steering nut. I think I'd rather have a little more effort for turn-in if it meant I could carry an extra .15 G around a turn.

-Josh2

You had me right up to the point where you say you set up with less negative camber and have more grip in a corner....not in my experience...but I also don't run max caster on my race cars...I do use a pyrometer to maximize all test set ups though....I'm also not sure your more caster/less neg camber theory is correct...but if it works for you...who am I to argue.
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