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[QUOTE="LogicTech, post: 734428, member: 51157"]
Hi Jeremy

Is there an easy way to calculate the conversion of a PDS spring rate to a straight rate spring?  The reason I ask this because I calculated a matrix for 2004 KTM’s with straight rate springs. I extended it to cover riders and gear up to 280lb. Now that I have the high end spring rate calculated I want to convert that value to PDS progressive spring rates. So far I found that if I multiply the straight rate by 1.15 and then match it to the PDS high spring rate it matches up fairly well. I also find that the higher PDS rates work much better for most people. When I follow the forums I can’t believe how soft of springs are being recommended for heavy bikes and riders. 
Currently I have a 2004 200exc with 44’s and a PDS-4 for a 235lb rider with gear. The bike measures up very good using stock methods, 35mm shock sag and 35mm fork sag. The bike performs very very good. Great steering and handles the deep whoops with ease. How dose this sound to you?

LogicTech
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