So, Its been a few years since my last physics class and i've been trying to figure out a decent way to do a suspension setup on my rally car project.

All of the good, heavy springs that i can find are all for lowering the ride height of a car 1 or more inches. That is the exact opposite of what i am wanting to do. So I have been thinking, would it be a half assed good idea to get two sets of these lowering springs, at two different spring rates, to act as a progressive system and at the same time give my susupension a little more travel?

Or am I just pipe dreaming on this one?

Was thinking of getting som Eibach 171 and some RB 145 for the front, and something with simlar rates for the rear. That way i could set the 145 spring on the bottom half of the spring and have it compress first, then when it reaches full compression the 175 could start taking load as well. Or would both be compressing at the same time, just at two seperate rates?

 

Springs don't work that way. Besides, your rates of two springs are only 26 pounds different; that's practically nothing.

If you need longer springs you go to 2.5" coilovers and buy longer springs. Eibach sells all sorts of different free lengths in 2.5" diameters. The longer spring isn't going to do you a bit of good unless your shock also has a longer stroke.

 

Thats what my mind was starting to go to, and why I asked that question before continuing with idiocy.

Ignorance is the worst enemy when trying to set up a car, thank you for clearing it up. Now I just need to find some good coilover setups then.