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Author Topic:   Afco Progressive Torque Link Spring
Xtreme12x
Dirt Forum Champ
Total posts: 874
posted July 19, 2005 09:02 AM  
Does anyone know what rate this spring is? I can't find it in any of my books I have.
Thanks
Xtreme

dirtmod0
Dirt Maniac

Total posts: 143
posted July 19, 2005 10:49 AM  
I think afco makes a 500-1100 pound spring and a 600-1200 pound spring. It should have a engraving on one side of it

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted July 19, 2005 04:13 PM  
If you are using the 2700PR spring here is a link to the specs.
http://www.secureperformanceorder.com/afcostore/getproduct.cfm?CategoryID=17&ClassID=228&SubclassID=1084&ProductID=1400

msnead
Dirt Forum Racer

Total posts: 77
posted July 19, 2005 08:57 PM  
Not to sound stupid, but what is the difference in a progressive spring and a regular spring? (My guess is that as it compresses, the spring rate increases...?)

What effect does that have on handling?

Thanks and sorry for the newbie question!

m

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted July 19, 2005 10:58 PM  
Well with a linear spring (normal spring) the rate doubles per inch of compression. (not exactly doubles,but I can't think of the appropriate word LOL)With a 200 lb spring it takes 200lbs to compress 1" and 400 to compress 2" 600 for 3" and so on. the progressive does not go like that. Notice the Afco PR spring(in the 1/4" preload) that at first it takes 650lbs to compress 1". Then it takes 800lbs for 2" of compression. If that spring were linear and it took 650lbs for 1" then it would also require 1300lbs to compress it 2" not 800lbs.

So thats what a progressive spring does, it increases the required weight slowly instead of doubling it. Hope that helps you to understand them.

[This message has been edited by FlyNLoIMCA17 (edited July 19, 2005).]

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