Calculate the required spring strength.
(1) Determine the required travel height
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After determining the effective load value, we will determine how much shock absorption stroke is required for the vehicle stability you want. The measurement height used for this calculation is the length of the exposed shock absorber strut after installing the shock absorber, in order to find the corresponding spring strength that reaches the ideal value you want.
(2) Calculate the required spring drop value
Subtract the travel height from the overall height of the shock absorber.
For example: 14 “suspension minus 5” travel height.
[14 “(damping stroke)] – [5” (stroke height)]=9 “descent. (Isn’t it very simple?)
(3) Calculate the correct overall spring strength
We have just calculated the load weight and the required drop, now we only need to find the overall spring strength you need through calculation.
For example: 1000 pounds of payload weight minus 9 “drop.
Then [1000 pounds. (payload weight)]/[9 “(descent required)]=111.11 Lbs./in. Approximately equal to 110 Lbs./in (pounds per inch)