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Bill Verburg Bill Verburg is online now
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Join Date: Dec 2000
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Quote:
Originally Posted by phunt View Post
The spring shown is not a tender. It is a 200lb spring used for dual rate purposes. The main spring is a 250lb spring. That is the 8” one. Clint Smith is the one who suggested it and sold it to me. I do have a tender as well but it is not installed.
Bill if you need measurements I will be happy to take them.
I do not know if they are B8 or B6 and frankly I don’t know what that means. The shocks are Bilstein lrevalved by Clint. they were not done correctly. I had to send them and the rears out to get fixed. But non of that matters. Again it just does not seam right when there is that little available travel
Not sure what the advantage of that is unless the actual spring desired isn't available

That's a dual spring setup, as opposed to a dual rate spring setup. They are not the same thing

Your spring setup acts a single rate spring which is less than either of the component springs, What you say???, That doesn't make sense! But it does because each spring

is in a say 1" compression only moves part of that 1" the 200 moves a bit further than the 250, But the important thing is neither moves the full 1"

the formula is
effective rate = (TS * BS)/(TS +BS)

the result is 111.1 lb/in for your 200 lb/in + 250 lb/in

just as a comparison a stock 18.8mm fron t-bar wheel rate is 137 lb/in, the actual t-bar rate is 170 lb/in
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Bill Verburg
'76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone)
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