Quote:
Originally Posted by 03threefiftyz
Suspension set-up is also heavily dependent on tires. If you are going to run 300mm super soft avon hillclimb tires, you are going to have to run a much different set-up than 400tw michelins.
My car is probably a full 2" lower than stock (this is with very short motons at the time). Even though the one side is loaded, you can see that the other side is off the ground, but all that much higher than what a factory ride height would be. 1000lb spring on the front/ 850lb in the rear. A little on the soft side for concrete at 2900lbs and 315 A compound hoosiers. If you tried to run this set-up on a road course as is, it would be a hell of handful.
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These springs are close to those that the Z34 NISMO RC ships with and are what I would expect as a start for road-racing on slicks - or sticky R-spec's - with large front bar (1.25" or maybe 1.5" hollow) and a small rear bar, but only when the suspension bushes are stiffened right up.
I'm not sure why you'd consider this to be a handful on a road-race circuit unless you reckon it would be too twitchy given the stiffness in the suspension - but our circuits here in Australia are (relatively) smooth - there are a few (like Wakefield Park in NSW and Sandown in VIC) that are bumpy, but the really quick ones like Phillip Island are quite smooth and reward driver committment and a stiff chassis.
Anyway, back to the OP - beware running the car too low, suspension arms need to remain relatively flat and you need enough "bump" to avoid bottoming under braking and bumps which will make the car lock wheel(s) and dart/break-away with little warning
RB