Best way to adjust rear coil overs for proper height on my SPF

[G-Pete]

I like to make it clear ones more (for the last time)

Not to corner weight and adjust make your car NOT more dangerous, it just optimize the behavior of turns.

With other words,(for an example) you're on the track and your right turns are fine and the neutral at the acceleration point but your left turns you have a under-steer and you lose time.

In many cases (after checking/adjusting - springs, shocks anti-roll bar) it leads to excessive cross weight.

My 911 was 52% on the high rate and still placed many 1st. Just like to glue in the rights and drift a little in the left.

Anyhow, it is pretty irresponsible to spread the idea a car is not safe until it's corner weight and balanced.
AGAIN all your calculations, measurements and adjustments are OUT THE WINDOW when you have a passenger on board (or you gain 10 pounds over winter, or both).


...and Jerry, call me totally insane. C-ya on the track

[ACademic]

I wonder how many of those 700hp '13 Mustangs will Ford corner-weight before they let them loose on the streets? Same for Chevrolet's ZR-1s, the Camaro ZL-1s, etc., etc.? Do the ownership manuals in these cars specify that the driver must check their corner-weighting before they drive their new toys?

The defense rests, Your Honor.

[JBCOBRA]

I am not sure of the manufacturing process in Detroit, but I would bet they at least get a baseline reading.
All the serious Cobra, Stang and Vette guys around me just take their cars straight over to
Phoenix Performance
They know their ****e ;-)

Originally Posted by ACademic

I wonder how many of those 700hp '13 Mustangs will Ford corner-weight before they let them loose on the streets? Same for Chevrolet's ZR-1s, the Camaro ZL-1s, etc., etc.? Do the ownership manuals in these cars specify that the driver must check their corner-weighting before they drive their new toys?

The defense rests, Your Honor.

[G-Pete]

To stand corrected mine will have not 700HP more like 475 to 500 at the wheels and will weigh below a ton (weight distribution 50/50)

[patrickt]

Originally Posted by G-Pete

... and will weigh below a ton (weight distribution 50/50)

OK, I gotta ask... "How will you know that?"

[G-Pete]

Originally Posted by patrickt

OK, I gotta ask... "How will you know that?"

Because I have scales (don't have to go anywhere)
Because I design and scratch build my car
Because I have an engineering degree
Because I do "impossible" things for decades
Because I'm very careful to use internet calculators (do my own)
Because I don't like "internet engineers"
Because I have a very large skill set

...because I know.

[patrickt]

How far along on the build are you?

[G-Pete]

Originally Posted by patrickt

I might as well clear this up, since it is absolutely false.

Alright it is absolutely false - my statement is wrong.

I apologize for any inconvenience that I have created...


I just took your statement (need to place the weight of the driver in the driver seat) and drew logical conclusions.
The fact you changed variables and came to the same outcome led me to the following:
Don't argue with idiots - just say sorry and move on

[patrickt]

Originally Posted by G-Pete

AGAIN all your calculations, measurements and adjustments are OUT THE WINDOW when you have a passenger on board (or you gain 10 pounds over winter, or both).

I might as well clear this up, since it is absolutely false. My cross weight percentage with me out of my Cobra is 49.9%. With me in my Cobra it is 50.1% -- a passenger that weighs less than I do (195 lbs.) only brings the values closer to the perfect 50.0% number. How is this possible? Because when I sit behind the wheel of my Cobra, my weight is distributed as follows: 47% goes to the left rear wheel, 29% goes to the left front wheel, 24% goes to the right rear wheel, and less than 1% goes to the right front wheel. The difference in cross weight by adding me behind the wheel is less than ten pounds. It is that difference that affects the cross weight percentages. I just didn't want anyone not adjusting their car because of the belief that adding a few pounds around the waistline, or even adding a passenger, would negate it. If you want to play with exact numbers, here's a nice on-line Corner Weight calculator Corner Weight Calculator