Clutch rollers??

[Nytronorth]

I have tried other sites for this question but never got any help. So here goes. I have an 08 MTX Nytro with MCXpress turbo running at 19lbs. This thing eats through clutch rollers every 400-500kms. Everyone I ask that is running boost say they do not have any issues. I have full panel venting and never burn belts so I do not think it is a heat issue. I just had clutch inspected again then put in new rollers,pins,washers, New dalton weights and new spring as preseason ritual. Went to Revy and rode for 6 days. Sled ran flawless and never even opened the hood. Came home and went through my post ride ritual and sure enough roller bushings are shot again. I have 6500km on the sled and clutch has been rebuilt at local Yamaha shop twice in that time. but still I eat rollers like crazy. 12 sets in 6500km cant be normal even boosted!! Help please!! Or is it time for aftermarket clutch??

 

[dutchie]

that sucks ,
i'd say you have something wrong for sure , never heard of this before , i'm sure someone has and will answer your call for help

 

[towerrigger]

What size are you running for rollers? Is it that the bushing is shot or the actual steel roller?

 

[Nytronorth]

I think they are 14.5mm (The smallest ones) and yeah its the bushings that go.

 

[HighSpeedLowDrag]

Some solvents will cause the bushings to wear very quickly. I had a set fail a few days after cleaning the engine, now I remove the clutches before using anything other than water under the hood.

 

[Nytronorth]

Thanks. But they were installed new and dry before trip and shot at the end of trip. I only ever use air on my clutches and sled rides in enclosed trailer so only washing done is just towelled off in garage at home.

 

[towerrigger]

Do you have some pics of the bad bushings you could post? Are the rollers spinning freely when they are all tightened up in the spider?

 

[Nytronorth]

No I threw them out already. And yeah they spin free and seems like the weight hits them evenly also.