Ok I did the standard change the springs to RWR 60% but the clutch is still slipping, so Stock Plates or a Carbon Fiber Kit?? both are about the same cost???

 

I like the stock with the RWR springs.

 

What kind of motor oil are you using? Did you replace the whole clutch? Did you lightly sand the metal plates?

 

I run stock with 60% and non synthetic oil. You should change it more often but it is cheaper and there are no worries about slipping.

 

Same thing happend to me, stock clutch was slippin after i got a pipe/jetted, so i put the woods springs in, worked but then started slippin slightly again so i decided to go wit the barnett carbon fiber kit, never had a prob since [img]i/expressions/face-icon-small-smile.gif[/img]

 

Mine was slipping earler this year, I stoped using mobil1 oil and went to Honda 4 stroke oil. also I pulled the plates out and mic them. Iam at the very limmit . I lightly sandes the steel plates and put here back to gether w/ the new oil and its still grabbing, no slipping.

If your gona mic the plates do a search on the thickness limmits I cant remember, I did a post on it earler its in there.
Sam

 

I went with the Barnett clutch for the near stock ease of clutch pull. I also run Honda 4 stroke gold oil with no moly. I have no slippage.

 

My stock unit smoked as well. Picked up some heavy duty springs, i think barnet?, ended up being same as stock, then got romwoods 60's and did the resurface trick to the steels and lightly(very lightly) to the fibers to break the glaze (there were slipped adn shinny like glass.) measured in speck after wards so i tossed it backtogether and dumped castrol gtx 10-w40 (dino) oil in adn i cant make it slip now. you can try to abuse it by revving it and popping the clutch at speed in 4th gear, but it just slips for a split second till it grabs and holds. If a clutch can do that, its good for me.

When it was burned, it would just let loose on its own at about 4000 rpm in 4th gear at full throtle.

Springs ad gasket was about 20 bucks shipped, New fibers would be a pluss, but not needed if there in spec.

just my 2 cents. You decide whats best for you....

dave.

 

Forgot to mention, i pulled the smoked clutch on my 600cc dirtbike and did the resurface trick to the steels only! Slapped the fibers right back in as they were, and its better then its ever been now. (got it used, and the owner mentioned he burnt the clutch and replaced it(fibers only)) The fibers were replaced a few times in the past by myself as well, but never the steels and never resurfaced them either.

If the steels arent flat, i assume the clutch will eventually slip, from there it just gets worse.

Best way I've found so far is to use a sanding bar that has a solid flat plate the sandpaper stick to. A padded one like used for auto body repair will dammage the clutch, by rounding the edges. I got one from the local hobby store, its a 12" long Hobico brand used for making RC planes. They also have 320 grit self stick sand paper to fit the bar. Whole deal was under 20 bucks, but I allready had it.

Just sand it with the bar as evenly as you can, rotating the discs so you dont sand it to thin in one area. It takes a while, but it has cleaned up 2 bad clutches for me now.

If you scuff it lightly you may see it only scuffs the steels near the inner and outer edges, and dosent touch teh center part where the fiber mainly rest. Sand till this is gone adn there are evenly scuffed. Then measure to make sure there ok. Mine had a lot of life in them yet. If yours havnt been sanded yet, there probbly thick enough to do it to..

The fibers can be sanded to thin very quickly and easilly, i just made 1-2 light strokes on mine to break the glaze a bit. Not sure if its even neassary to touch the fibers.?

You could probabbly get away with doing this and usung stock springs if you are runnung a stock motor with minimal external mods (ie a loud pipe)....