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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Lowering The seat hight on my KTM
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[QUOTE="marcusgunby, post: 226893, member: 17066"] RollingGP thats the kind of answer that is appreciated here-its all about backing up answers with hard proof.If you dont mind can we go into a few points you raised. The free sags importance i dont get-i know KTM says it should be this way but IMO isnt it better to have the rider sag correct then the fork angle is as expected. When installing a shock spacer the spring is wound up the threads so it starts compressing the same as normal-you just have a bit less travel which does mean the progression is advanced but not much progression exists at this part of the travel. Coil bind as far as i know is when the whole spring is coil bound-the top three coils are designed to close up 1st thats why you take measurements at 20mm I adgree the spring doesnt make the systam as progressive as a jap bike and the 2nd piston has to take up the job but im not sure which bike has the most total damping on bottoming? I used a 7.5 straight rate spring on my 125 sx and it steered better and was plusher-i liked the 7.5 or the pds1 -straight rate was best. When you say involved in the 98 PDS -was you a tester or a engineer-not doubting you just interested. I have wondered about having a bleed hole in the piston-it would be one answer to the problem-have you modified the comp adjusters at all? I adgree 100% on the springs varying-this is not good. The bit about a rider going faster on a stock KTM-you cant have ridden a 125sx-its a bone jarring beast,i rode a 520 set up for a 230lb rider(i weigh 170lb)and it was way plusher than the 125sx std or modified. The 125/200 acts differently to the bigger bikes as the unladed weight is less and the shock just refuses to move into the stroke then all of a sudden it blows through and bottoms out.I know valving makes it better but its very hard to get a decent compromise.I spent weeks valving a 125sx and at best it was worse than a std CR125-the Cr i could almost mix shims up stick them in and i would still be better. I had settings from the champ KTM team and GP team techs and i still wasnt very good-no championship bikes in euro land have ever raced with the std forks/shocks-thay all run SXS or works and some have to buy the SXS so its not a case of running what it because its free. I adgree alot of suspension companies shy away from the PDS but who can blame them the costs of servicing is unreal for all the Gizmos, and the cost is hard to recoop because the market is small. On suspension companies -Jer isnt the type to try to flog people stuff becuase he knows best(im not saying you directed your comments at him BTW)-his forum is designed to enable riders to make informed decisions based on knowledge gained-your input there would be great BTW. Ive enjoyed this thread and have a happy christmas [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Lowering The seat hight on my KTM
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