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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
suspenders way too harsh... re-revalve?
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[QUOTE="evenslower, post: 849881, member: 25654"] I agree with the comments about spring rates vs. harshness in the forks but the PDS on the rear of a KTM is very unique in terms of setup in comparison to a link system. What sag settings are you shooting for? I did a lot of reading and "testing" and found that the rear works best for me with 35mm of static and 110mm rider sag. My measurements aren't exactly scientific but close. If you've got the wrong spring for your weight you won't be able to get close enough to proper settings to make it work the way you want it to. I have 3 preload spacers in each leg of the forks (little plastic KTM washers) to help keep the forks up in the stroke by putting more preload on the spring. That with the slightly heavier oil made a huge improvement. Each click seems to make a more noticeable change now. A PDS 4 is progressive rated at 8.5-11 kg/mm which is way too stiff for your weight. As a comparison my PDS 6 is rated at 7.15-9.05. I would guess your spring would be intended for someone in the 250lb range. I wouldln't think you'd get close to proper sag settings with that heavy of a spring. You can get into a whole progressive vs. straight rate discussion but that's semanitcs for most of us. Hope someone who knows more can chime in. Don't be afraid of experimenting with oil in forks, the biggest problem is not making a mess. I'll email you some stuff that helped me. Editorial note: this information intended for recreational purposes onlyl and the author makes no claim as to its validity, usefulness, or that he even remotely knows what the hell he is talking about. :nener: [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
suspenders way too harsh... re-revalve?
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