Originally Posted by rldzhao
From my fresh measurement:
Stock front spring: ~12"
Front spring (mounted) perch-to-perch distance: ~8"
Preload compression: 12"-8"=~4"
Which means that the front suspension experiences a preload of roughly:
147 lbm/in * 4 in = ~588 lbm
Now, this number may be slightly high because the spring stiffness during the initial 20% of travel is less than 147 lbm/in, which means the preload will be <588 lbm.
Thanks. Knowing the perch-perch distance helps.