figuring spring rate's for coil overs? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 09-04-2002, 10:47 AM   #1 (permalink)
DSI
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figuring spring rate's for coil overs?

ok since most manfature's sales ppl seem to be more sales orientated than product orientated and are of little to NO help, how the heck do i figure out what coils i need??

front axle weight approx 1600
rear axle weight approx 1200


and that's going to be if we sandbag the thing! as it sit's with 2/3 of the chassis, axles and tires it's under 1k still motor tranny t-cases are 528lbs total...

the thing's going to be closer to 23-2500 max but will need to be 2800 for obvious reasons

what rate coils am i gonna need??
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Old 09-04-2002, 11:16 AM   #2 (permalink)
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C'mon no one knows???
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Old 09-04-2002, 11:59 AM   #3 (permalink)
 
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There are a few other things needed to know before figuring the spring rates.

1. unsprung weight of front axle, tires, wheels
2. unsprung weight of rear axle, tires, wheels
3. desired shock travel at front and rear
4. angles at which the shocks lean in and rearward/forward
5. do you want a single coil at each shock or dual rates?
6. distance between shocks on the same axle and distance from inside of wheel to shock
7. desired wheel travel

With that info, I can get you real close.

Later,

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Old 09-04-2002, 12:03 PM   #4 (permalink)
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Give me a fax # and I will fax you the calc formula's along with the dual spring rate charts.
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Old 09-04-2002, 12:07 PM   #5 (permalink)
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Quote:
Originally posted by Ramstein
Give me a fax # and I will fax you the calc formula's along with the dual spring rate charts.
Id be interested in that
913-782-3638 attn Paul please
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Old 09-04-2002, 12:24 PM   #6 (permalink)
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Go to www.swayaway.com and look under spring rate calcs. They have a pretty good explanation of how to do things and some diagrams to go along with it
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