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914World.com _ 914World Garage _ Rear spring rate

Posted by: 1bad914 Dec 28 2005, 07:07 AM

Is there anyway to figure out what pound rating a set of rear springs are? The ones I'm looking at are thicker than stock by quite a bit, they are painted yellow. Just wondering.

Posted by: ArtechnikA Dec 28 2005, 07:18 AM

coil spring rate:

CODE
lbs/in = 1.500.000 x d^4
------------------------
n * D^3

D coil diameter
d wire diameter
n number of active coils

Posted by: Jeroen Dec 28 2005, 08:35 AM

or just put some weight on them and measure the compression

Posted by: KenH Dec 28 2005, 11:39 AM

Put one on a bathroom scale and add enough weight to compress it one inch - read the scale.

Ken