Time for the 10s.

wstar · 09-03-2014, 08:44 PM

Quote:

Originally Posted by phunk

I have wondered this entire time if what the alignment is doing is actually the most optimized for road racing or not. I am no road race setup expert, but I think its a conversation worth having.

Could the outside tire be cambering more than the chassis is leaning, and taking rubber off the pavement for no good reason? Perhaps "yes" with a very stiff and flat setup, and "no" with a more stock setup? Or would the answer be "no way not even close"?

I think in general the answer is that yes, the 370's suspension is more optimized for road-racing than it is for for drag-racing. Not that it doesn't need tweaking and parts upgrades for road-racing too, but even without those it's generally in the ballpark of doing the right thing. I *want* camber as the rear loads up on weight transfer, because that set of conditions (low-gear + heavy throttle -> weight transfer to rear) only tends to happen during mid-corner through to the exit, where the car is already trying to fly sideways at a full G or more before I even started laying into that throttle pedal.

It seems it would be difficult in general to simultaneously optimize a rear suspension's response for both road-racing and drag-racing.

phunk · 09-03-2014, 08:57 PM

Quote:

Originally Posted by wstar

I think in general the answer is that yes, the 370's suspension is more optimized for road-racing than it is for for drag-racing. Not that it doesn't need tweaking and parts upgrades for road-racing too, but even without those it's generally in the ballpark of doing the right thing. I *want* camber as the rear loads up on weight transfer, because that set of conditions (low-gear + heavy throttle -> weight transfer to rear) only tends to happen during mid-corner through to the exit, where the car is already trying to fly sideways at a full G or more before I even started laying into that throttle pedal.

It seems it would be difficult in general to simultaneously optimize a rear suspension's response for both road-racing and drag-racing.

I agree that the setup is much more optimized for road racing than drag racing. But I believe you misread my question you quoted. Simplified: does the 370z camber too much during compression *even* for road racing? Or maybe with some setups "yes" and some setups "no". There has to be a point where its too much, I am wondering if the 370z could have crossed that line in some applications, or is it not even close to being too much? Could adjusting the control arm nodes to reduce compression camber slightly even aid a road race 370z that wants a lot of compression camber?

Super Werty · 09-03-2014, 09:05 PM

might be easier to swap in a live axle and let er rip

clintfocus · 09-03-2014, 10:26 PM

Quote:

Originally Posted by phunk

I have wondered this entire time if what the alignment is doing is actually the most optimized for road racing or not. I am no road race setup expert, but I think its a conversation worth having.

Could the outside tire be cambering more than the chassis is leaning, and taking rubber off the pavement for no good reason? Perhaps "yes" with a very stiff and flat setup, and "no" with a more stock setup? Or would the answer be "no way not even close"?

Quote:

Originally Posted by phunk

I agree that the setup is much more optimized for road racing than drag racing. But I believe you misread my question you quoted. Simplified: does the 370z camber too much during compression *even* for road racing? Or maybe with some setups "yes" and some setups "no". There has to be a point where its too much, I am wondering if the 370z could have crossed that line in some applications, or is it not even close to being too much? Could adjusting the control arm nodes to reduce compression camber slightly even aid a road race 370z that wants a lot of compression camber?

the heavy camber curve under compression is an advatange for road race setups IF (heavy emphasis on the "IF") you can get the rear negative camber reduced enough. YES there is a point where its to much camber, but if you can set it up right at static (which can be verified by tire temps), then you can have a setup that has good longitude traction from the minimal static negative camber, but then camber's in enough during cornering. so yes it can work fantastic if your static settings are correct.

09-03-2014, 09:05 PM	#3 (permalink)
Super Werty Track Member Join Date: Jul 2013 Location: AZ Posts: 668 Drives: '13 Sport Rep Power: 13	might be easier to swap in a live axle and let er rip phunk likes this. __________________ The Build

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