CLASS RACER FORUM - View Single Post - Drop Per Coil Removed on Moroso Trick Springs

sixty8 · 04-08-2009, 12:44 AM

What is the free length of the spring? What is the installed height of the spring? I have found that if you reduce the free length of the spring by the amount that you want the installed height reduced will put it pretty close.

Here is an example for a spring with a free length of 16.625 that installed at a height of 11.0. I wanted an installed height of 10.25 so I needed a free length of 16.625-(11-10.25) = 15.875

It sounds to me like you have the wrong spring if you want to reduce the tire to fender distance by 2.5 inches. You will probably have to reduce the free length by about 1.25 which will increase your spring rate. What you need is a longer spring with less spring rate to give you the most "stored energy" at the ride height that you want.

04-08-2009, 12:44 AM	#3
sixty8 Junior Member Join Date: Sep 2007 Posts: 14 Likes: 0 Liked 0 Times in 0 Posts	Re: Drop Per Coil Removed on Moroso Trick Springs What is the free length of the spring? What is the installed height of the spring? I have found that if you reduce the free length of the spring by the amount that you want the installed height reduced will put it pretty close. Here is an example for a spring with a free length of 16.625 that installed at a height of 11.0. I wanted an installed height of 10.25 so I needed a free length of 16.625-(11-10.25) = 15.875 It sounds to me like you have the wrong spring if you want to reduce the tire to fender distance by 2.5 inches. You will probably have to reduce the free length by about 1.25 which will increase your spring rate. What you need is a longer spring with less spring rate to give you the most "stored energy" at the ride height that you want.