Originally Posted by aosborn
That is not really how it works. I 300lb spring is a 300lb spring regardless if it is 2" or 12" long. One will just coil bind sooner than the other. 300lbs compress it one inch, 600lbs 2" etc, unless it is a progressive spring.
That is what I thought also. So why does the calculator posted above say you need a different spring when you change the length of the spring? I have been thinking about this for a couple of days. It has been bothering me. I have used coilover springs and shocks on race cars for over 20 years and I just don't understand why that calculator shows that.
Are you referring to the pre-load setting they have shown? Since they are showing you three different spring choices you would need to preload each spring a different amount to support the car.