Quote:
Originally Posted by toddu
Fwiw with 29 rear bars I was at 19.8 degrees. I'm a bit lower than euro, couple hundred lbs lighter than you.
Just for reference. I used the calculator and it was pretty accurate.
Todd
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Todd,
Good to know. Thanks!
Now that I look at the numbers again, 2700 lbs seems high. I have another reference that says a stock SC was ~2500 lbs range. I've done some things to lighten the car so maybe 2700 lbs is a little high.
The chart that I got the 14.85º number from for 28mm bars says 12.91º for 29mm bars. Hmmm.
I also found a note that says the chart is for "stock" ride height. Not very specific as to what "stock" means. But here are some examples for comparison.
911, 1968 & up
22mm = 38.97º
24mm = 27.52º
28mm = 14.85º
29mm = 12.91º
31mm = 9.88º
These numbers seem way off from the Will Ferch numbers.
I used the calculator link and it let's you select the ride height. Cool! I put in 2500 lbs in the calculator and the result is 22-23º. I played with the calculator and it looks like for every 250 lbs of weight increase the target spring plate angle increases by 1º. (I did this assuming 28mm torsion bars so maybe a different spring rate would generate different results.)
I think I'll give that a try as a starting point and see where I end up.
Thanks everyone!