G.R.
The formula for wheel rate is
= (Motion Ratio) Squared X Spring Rate X (Shock Angle Cosine) Squared
The reason is because the spring is not right on top of the tire.....
So you have to know the Wheel rate numbers instead of the spring rate number.....
All suspensions are different and have different mechanical leverages on the spring.....
So knowing the wheel rate is more important then knowing the spring in your car.....
On a CSX or Kirkham....if you look at the lower control arms(front and rear)....you'll see that the coil over mounts in different locations on the control arm.....
And when you calculate the wheel rate out with 600# springs on the front it calculates out to around a 210# wheel rate......
And the Rear with a 500# spring calculates out to around a 335# wheel rate.... which is why you have to have a larger front Anti-Roll bar on the front....so when your chassis moves the rate goes up because you add the wheel rate and the roll bar rate together to get the actual wheel rate.....
The actual force on the tire/wheel from the chassis....
That's why it doesn't matter when someone asks about what springs are you running...... the mechanical leverage is different and will give a different wheel rate.
Hope this helps out....
Morris
