Question - Progressive Spring Install Orientation
12-21-2003, 12:45 PM
#1
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Question - Progressive Spring Install Orientation Progressive springs have more coils at one end
than the other (sequential coil bind changes the
spring rate). My question is, would installing them
with the heavy end up or down affect things like
unsprung weight any? Like, if the light end were
toward the wheel the wheel would return more
smartly? Is there a right & wrong way to install
or is it a don't-care?
than the other (sequential coil bind changes the
spring rate). My question is, would installing them
with the heavy end up or down affect things like
unsprung weight any? Like, if the light end were
toward the wheel the wheel would return more
smartly? Is there a right & wrong way to install
or is it a don't-care?
12-22-2003, 10:25 AM
#2
Check with the manufacturer. Most progressive springs work either way, but usually, the coils that are closer together are at the bottom. I don't think changing the mounting direction would make enough difference to bother being concerned about it.
My thoughts.
Kevin
My thoughts.
Kevin
12-22-2003, 05:54 PM
#3
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I think unsprung weight would be the same with the spring orientation reversed, but how about center of gravity and roll center? I am guessing it makes no difference, but I'm not sure..
12-22-2003, 08:40 PM
#4
The car would sit at the same height, so roll center and CG are the same.
As for unsprung weight, you could, in theory, move a little weight towards the fixed end of the shock. However, I'm not sure anyone on this board (pros included) would be able to tell the difference in moving a couple ounces 3 inches. I suspect we are overanaylizing/splitting hairs to the point that it is no longer relavant.
My thoughts.
As for unsprung weight, you could, in theory, move a little weight towards the fixed end of the shock. However, I'm not sure anyone on this board (pros included) would be able to tell the difference in moving a couple ounces 3 inches. I suspect we are overanaylizing/splitting hairs to the point that it is no longer relavant.
My thoughts.
12-23-2003, 05:54 PM
#5
Originally Posted by jimmyblue
Progressive springs have more coils at one end
than the other (sequential coil bind changes the
spring rate). My question is, would installing them
with the heavy end up or down affect things like
unsprung weight any? Like, if the light end were
toward the wheel the wheel would return more
smartly? Is there a right & wrong way to install
or is it a don't-care?
than the other (sequential coil bind changes the
spring rate). My question is, would installing them
with the heavy end up or down affect things like
unsprung weight any? Like, if the light end were
toward the wheel the wheel would return more
smartly? Is there a right & wrong way to install
or is it a don't-care?
The softer part of the spring will compress first, regardless of it's being on the top or bottom. The wire, coil pitch and all is still the same, so that won't change either.
It's a "don't care", provided of course the fitment allows installation either way.
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www.stranoparts.com --814-849-3450
18 SCCA National Championships in house, many more for our customers prove we know our stuff.Talk is cheap, results matter.
Check out our KONI prices, our Master Cylinder Brace, and new Xtracker Hub/wheel bearing upgrade kits!
