Choose your new spring weight?
As shown in the figure, the spring combination can be roughly divided into three types: single rate spring, double rate spring, and three rate spring. The calculation of the three rate spring is slightly different from the first two types and will not be explained in detail. Below, we will calculate the 110Lbs/ In to select the required weight for different types of shock absorbers
(1) Single speed shock absorber (6 “to 10” shock absorber)
The calculation for single spring suspension is completed. Based on the example above, you want to find a spring strength of nearly 110 pounds per inch. This could be a 100 pound spring.
(2) Dual speed suspension (8 “to 16” suspension)
Double rate shock absorbers use two springs, so you will need to double the required rebound rate. Using the example above, 110 pounds per inch x 2 is 220 pounds per inch. In this case, a 200 pound upper spring and a 250 pound lower spring are the best choices.
Dong dong dong! Knocking on the blackboard: The lighter spring rate is always at the top. If the spring speed is within 250 pounds. The lower spring and upper spring should maintain a speed difference of 50 pounds. If the spring rate exceeds 250 pounds. You can create a speed difference of 100 pounds between the upper and lower springs. If you use the same weight of upper and lower springs, although they can work normally, you make your car’s shock absorbers lose their adaptability on different road surfaces.
I would like to remind all car enthusiasts that these are the most basic calculation methods. There are many factors that affect the spring rate, and any professional shock absorber adjustment technician will tell you that choosing the correct shock absorber is more important than calculation.