383

Has anyone done a stock suspension model like the one in this link
http://farnorthracing.com/autocross_secrets16.html
I'm not sure what everything means and teaching yourself is somewhat difficult

eogel

Search for Brian Cunningham threads. Some time ago he was doing some work in this area, but it was targeted at the C4. Not sure how deeply he went into it.

DG-FNR

I have, somewhere, a suspension model for C5.

As you would probably suspect.

What do you want to know?

DG

BrianCunningham

I have a Solidworks model for the C4
haven't put it into an analysis program

383

Just trying to figure out the perfect spring rates/frequency for *****-n-giggles. Im not keeping this car for much longer but I thought Id try to understand these things before setting up my C6Z

383

I just did some reading, you're kind of a big deal in auto-x!
Prepare for numerous dumb questions about setup!

383

Can you figure out CG from a model and actual measured ride height? I must need corner weights for this correct?
What angle do I want my control arms at for optimal camber gain/ride height

geerookie

Here's how I do it.

http://www.longacreracing.com/articles/art.asp?ARTID=22

jtmck

If you only raise the car 10", you will get a 30# to 50#number change. Not enough when a 5# change will equal 1.5" difference in CG height.

You will have to raise the end of the car 30" to get a worthwhile reading.

Yes, it is scary....

383

Awesome thanks for the link!
What do you guys use for locking the shocks in place?

geerookie

Depending on the total weight of the car F/R bias and wheel base that MAY be true.

Where are you coming up with a 1.5" CG height change as a result of a 5lb diff.? What's the math?

383

What do you guys use to keep the suspension from moving while lifting?

jtmck

Using your calculation formula....

Insert car numbers, including the 10" raised height, then change the loaded number by 5#, result difference is how much?

This is why I had to use 30" height.

Jim M.

TLGunman

I'm surprised Morse Measurments doesn't have a Vette in their catalog of K&C data:

http://www.morsemeasurements.com/pro...-car-database/

383

Are you guys doing this without locking the suspension from moving?

jtmck

You remove the shocks and springs. Replace the shocks with a solid link, adjustable to ride height.

383

Where would one go about finding one of these, or 4?