Russ: You're right, ride frequencies come first, which is a factor of
static deflection. Once you have static deflection, you'll need curb weight at each corner. With that you can calculate wheel rate, or weight divided by how much the wheel moves from full droop to ride height. With wheel rate you'll then need spring lever ratio (how much the spring is deflected for a given wheel deflection). You can now derive spring rate, which is lever ratio squared multiplied by wheel rate. That equals spring rate.
I'm in a rush now, but thought I'd throw in my $0.02 worth then give you numbers later.
Later, Tom
