## Spring Rate Calculation

If you want to have your own springs wound, here is some information for you...

- The formula is:

k= (Gd^4)/(8(D^3)N)

- Where:

d = wire diameter D = spring diameter N = number of active coils G = Shear modulus of material, For steel; G = 79.3 GPa

Take your tape measure and check the diameter of the coils and you've got everything you need.

The EASY way, would be to plug in the data here.

A bit more exacting formula can be figured out from the information on this page