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Old 02-12-2016, 03:04 PM   #295
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Quote:
Originally Posted by strat61caster View Post
Like racecomp says, front and rear suspensions are entirely different, putting the same spring rates will create two vastly different feelings at each end of the car, if I may quote them, the rough math below illustrates it pretty well:



According to the thread below the difference is actually bigger than they estimate above: 0.92 motion ratio to a 0.59 rear and realistically calculating stiffness and frequencies involves many more variables. But a 4k on the rear actually feels like a 2.5 and a 1.9 vs the front sitting at 4k or 3k.

http://www.ft86club.com/forums/showthread.php?t=26661

imo swapping front and rear springs sounds like a good start and the adjustable valving should make accommodation easy, I've even heard non-adjustable dampers can easily take +/- 50 lb/in (0.9k) spring changes without adverse effects.
Right, but the motion ratio is not the only difference in the front and rear suspensions. Camber and toe change through the range of motion, available travel, etc. These are very important too and are a big part of the reason why I don't recommend going so soft up front on this chassis. 3k is very soft.

EDIT: also, the 0.59 motion ratio you cited was for the rear swaybar, not spring.

- Andrew
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