OzVMX Forum
Marque Remarks => Yamaha => Topic started by: jimg1au on June 16, 2008, 06:46:44 pm
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hi
what fork tubes fit these bikes.my forkes wont stop leaking oil.the tubes are free from any rust or pit holes so i thing the prev owner sabded them back 1 is ok but the non brake side wont stop leaking.have put 2 new seals in last one with black rtv to stop leaking from around the slider but this didnt work either.i was wondering id other forks will fit longer is ok as i can slide up through the tripples
cheers
jim
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Jim,po didn't "sand" too coarse?,spinning tubes in lathe with oily 600 wet n dry for crosshatch effect works for me, :P
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Monoshock DT250/400 have very, very similar forks to the DT250/360A items, although the upper tubes are about 30mm longer. I'm pretty sure that the bike you got from me has one of those legs on it.
YZ125C have the same forks, but the YZ items are slightly machined down between the triples (saves weight - about 3gms per leg, I reckon... ::) _.
The 125C parts are definitely pre-75 legal as they're the same as YZ250/360B. Arguably, the DT-mono bits aren't strictly legal, but they're only a few minutes in the lathe away from being indistinguishable from YZ-B - so I doubt that anyone would care.
DT1/RT1, MX250/360A, and all of the twin shock DT250/360/400s have identical fork legs to the DT250A, but I'd found that good DT-mono fork legs are much easier to get hold of.
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Jim, I would have my doubts that the fork legs are the problem. I would reckon either quality of seals or being damaged during assembly. I would start by checking and eliminating other suspects. Right amount of oil? No blocked dampering hole causing excess oil pressure build up? No slightly bent fork legs?
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A dirty great blob of Pink seal grease will fix it :O)
you know the little black tin that looks like nats hair gel container. no wait thats the same stuff.