Posted by Daze
on October 1, 2010, 6:07 pm
174.44.36.63 | Message modified by user Daze October 1, 2010, 8:17 pm
In an earlier post I talked about finding that the OEM units were about 200# per inch. Turns out there is even more to keep in mind. Yes the OEM springs were 200# per inch at normal ride height however they must be compressed to 9" from 11" to install them on the shocks that means it takes over 400# of pressure just to compress them further. This is a huge factor!!! I finally found a company that sells aftermarket springs and for a Jag application they have sold 175#/" springs and it totally makes sense because the springs are 12" long so once they are on the shock you are looking at 525# just to begin to compress them. This got me thinking I needed to do a bunch of math to see how all the different options laid out. I set up an Excel work sheet and plugged in the numbers for an OEM spring, an OEM spring with a 1/2" spacer and 4 different rates of aftermarket springs and then graphed them. The result is very interesting. After looking at the numbers and the linear progression, I am leaning toward the OEM springs with the 1/2" spacer or a set of 175 aftermarket units, thoughts??? 
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