by Richard Miller » Mon Sep 10, 2018 9:45 am
what spring rate are you running right now ? I tried to find stock rate for a corvair but so far no luck ,, I might guess about 350 ,, if your car has 1750 on rear ,, half is 875 what is your motion ratio ,, probably 1:1 if shock attached to trailing arm ,, effectiveness reduced if shock is mounted at an angle ,,and total suspension travel ? lets say 4 inches ,, and your ride height is half of that ,, then 2 inches of compression needs to support 875 pounds ,,so a rate of 450 would compress 2 inches to 900 at 2 inches of travel with no preload ,, softer with some preload would center your travel and give a softer ride ,, so is my WAG ( wild ass guess ) anywhere near what you are running ?
Richard Miller
West Covina, Ca
'65 V8 Vair