This calculator tells you what the actual spring rate is on a swing arm setup at the wheel!

You will need these measurements:

A) Entire length of the swingarm(center from bolt hole to bolt hole).

B) Measurement on swing arm from chassis mount to spring(or eliminator mount) to center. 

C) Actual spring rate you have on that swing arm.

(A)  Length of Swing Arm:              

(B)  Measurement to Spring Location(from chassis) on Arm:                                            

(C)  Spring Rate:                             

Spring rate at the wheel: >>