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How subtanks really work..
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[QUOTE="DEANSFASTWAY, post: 710939, member: 31309"] Heres a laugh for you . the first chamber project I had was a woodsies 00 CR250 that he was running one summer . We were trying to get a real supple fork with good bottoming resistance . We took the CRs triple clamp off and sealed off the front of each frame spar and then plumbed the fork caps to the spars. We used firm plastic hospital type tubing . We purchased in line filters like the kind your dentist has on his air powered dental tools and thought that we could keep the oil out of the spars . We ran like 420ml oil or so and ended up with a really nice fork after we tried tuning the lines with ground down main jets pushed inside the tubing . We thought about using a check valve but never followed up. The forks seemed way plusher but seemed rather McGuyver in retrospect. I think the chamber was too big actually. I guess we also indirectly did it on a KTM (ZOKES)once to try and stop the seals leaking We plumbed the fork tops into the frame instead of adding bleeders on the caps. Those enduro bikes handlebars can be so busy that you cant find the bleeders very easily.We thought the forks were pumping up so bad We even tried a automotive PCV valve inline on the KTMS ,It actually worked really good in rocks and roots.The PCV valve was a good idea except that I though maybe The forks actually Sucked dirt in the seals upon rebounding. Actually those seals probably worked better with a bit of pressure on the pushing them against the tubes. I guess it was mainly dirt in the seals that was the worst thing . One Husky guy would get sprayed with oil when he rode a longer event and the seals blew out and sprayed oil all over his jersey. We were trying alot of things like double stacked seals. Double springs on the seals etc.First the blue seals then the black seals.Nobody really liked the looks of fork boots until they tried them and the forks stayed clean and didnt leak much. P.S. I know someone will read this post and say what a jackass, but at least I can say is I learned something. CHEERS DEAN [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
How subtanks really work..
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