So, here I was: my 1982 G/S was feeling very soft in the front end, especially with that 9gal tank full of gas. I was hoping that a set of progressive fork springs would take care of it, so I bought a Works Performance Fork Tuning Kit, part no. 250X. Installed it using the medium size pre-load spacer and found it very stiff. Shortened the PVC tube by 1/2 in and included the shortest pre-load spacer: the front end still felt very stiff and was not well balanced with the rear stock shock. Changing the pre-load spacer did not change much in the feel. I ran about 5000km before just recently, I attacked the problem again.
First, I researched the subject and found two simple formulas that I could use to make a qualitative assessment where I was with my front suspension in comparison. Mind you, I am not a professional, just an "average Joe with an non-calibrated buttmeter" but I was up for a little science experiment. For this, I used data from
Please note that the only uncertainty in those calculations is the material of the spring, which is a constant in the calculation. Also, since none of the springs are progressively wound, the deflection vs force function is a linear function in first approximation. So I consider those above values only correct in their relation to each other, not absolutely.
I will try this combination in Labrador and on the TAT NM/OK later this year and go from there. The next (ultimate) step should that not prove successful, is adding two RaceTech cartridge emulators. But I am not quite there yet.