Suspension Lowering
10-12-2010 | 12:04 AM
#47
Three Wheelin'
Joined: Oct 2004
Posts: 1,547
Likes: 9
From: Northland, New Zealand
Racecar vehicle dynamics by Milliken is so much more information than 99.99% of people need or can digest... 
The argument on the affects of lowering a car can only be answered by knowing the tire's sensitivity to camber and load. Without that, we are just guessing.
None of us here have that tire data (that I know of), so we are left to work with experience. M758 and a several others have that experience.
Mike, I'm sorry but you kind of lost credibility as an expert when you mentioned 400# front springs with a stock rear torsion bar handling OK. Camber, tire pressures, etc are for tweaking ... not fixing grossly mismatched springrates.
The argument on the affects of lowering a car can only be answered by knowing the tire's sensitivity to camber and load. Without that, we are just guessing.
None of us here have that tire data (that I know of), so we are left to work with experience. M758 and a several others have that experience.
Mike, I'm sorry but you kind of lost credibility as an expert when you mentioned 400# front springs with a stock rear torsion bar handling OK. Camber, tire pressures, etc are for tweaking ... not fixing grossly mismatched springrates.
As far as I recall, I didn't say that 400lb springs with stock torsions handled ok. I guess that's the problem with writing about this sort of stuff using subjective terms. It was certainly driveable, and quicker than stock when driven appropriately; although obviously compromised in certain definable aspects it was a worthwhile exercise and much more fun than simply bandying words around.
Milliken is a great reference and i just mentioned it in case people want to do some more research for their own interest. For example, definitions of "grip" and "handling".
10-12-2010 | 01:11 PM
#48
Thread Starter
Rennlist Member
Joined: Sep 2009
Posts: 245
Likes: 1
From: Palo Alto, CA
Mikey, didn't you recommend "DO NOT remove the spacer"?
Anyway, mhr you maybe right about the spacer being only 1", and that should work in my favor by lowering the front end by only 1".
It means the difference between the front and rear height would be less after lowering.
Does anyone see a problem with this logic?
Anyway, mhr you maybe right about the spacer being only 1", and that should work in my favor by lowering the front end by only 1".
It means the difference between the front and rear height would be less after lowering.
Does anyone see a problem with this logic?
10-12-2010 | 01:24 PM
#49
Burning Brakes
Joined: Dec 2009
Posts: 1,045
Likes: 0
From: Montreal, Quebec, Canada
If they are 1" spacers and your car is currently level with them in then the rear end may already be lowered 1/4 inch with the eccentrics.
If this is the case then you may not have much more lowering possible without re indexing. All speculation at this point. I cant wait to hear what happens when the talking stops and the wrenching starts.
Take some pictures and post them as I will be playing with the same stuff later on this fall.
If this is the case then you may not have much more lowering possible without re indexing. All speculation at this point. I cant wait to hear what happens when the talking stops and the wrenching starts.
Take some pictures and post them as I will be playing with the same stuff later on this fall.
10-12-2010 | 05:54 PM
#50
Three Wheelin'
Joined: Oct 2004
Posts: 1,547
Likes: 9
From: Northland, New Zealand
