Hawkman
Zone Head
Posts: 747
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posted June 07, 2002 09:28 AM
HELP!! New clutch questions.
I put new EBC Heavy Duty Friction plates in the 12. Stack height was too much, so I alternated EBC with OEM fiber plates that were 3k miles old.(friend gave them to me) Clutch is VERY grabby right now. Will it subside after a couple days of wear?? The thing shudders when releasing the clutch with partial/no throttle...clattering going on too. Did I fuck up by alternating the plates? There's 7 EBC plates and 5 OEM plates in there...alternating. I didn't have different thickness steels to put in. Should I get them now?
Thanks everyone!
  
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entropy
Moderator
Posts: 8671
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posted June 07, 2002 10:33 AM
hawkman,
i thought i had gone thru every variation of clutch mods/tests/tricks. BUT, you ARE THE MAN!!!!!
It never even occurred to me to try mixing two different suppliers' fibers, so I have no idea what results to expect. But yr chattering is not a good sign, and in my limited experience, the chattering NEVER gets better.
I do know that the stack height is critical and that .050 can have a HUGE impact Even .025" can make the difference between working great and not working at all.
I am sure none of the above is useful; but hey, you floored me with your experiment. 
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Hawkman
Zone Head
Posts: 747
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posted June 07, 2002 01:50 PM
At least you responded. Thanks for that!!
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted June 07, 2002 09:02 PM
Did you remove the small fiber and spring on the very inside of the hub? When my clutch was fixed under warranty the dealer was kind enough to install my clutch incorrectly, but I went 10,000 miles without 1 mm of clutch wear..lol. Mine chattered pretty bad on hard launches.
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BA
Pro
Posts: 1592
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posted June 08, 2002 08:56 AM
I can't imagine that there would be any problem with combining different manufacturers fiber plates.
The only thing I'd worry about is stack height and you got that covered!
Seems to me that I've had a slightly grabby, new clutch before that would wear off within like 100 miles or so.
Did you soak the fibers in oil before putting them in? I'm going to guess not.  That would have helped with the grabby-ness.
You could either, pull them out and soak them for a few hours. Or,...start the bike, put it in gear, lean it over to the right side so that the oil can flow into the clutch area, ...and simply let it idle there for a while.
If you do that too long, say over 40 seconds, your oil light might come on and you need to stand it straight up again. Do that 'lean over' thing a bunch of times and then let it sit. Maybe that will get some oil on the fibers to let it soak in.
Using the different thickness steels would be a crap shoot if you ask me. Sacrificing steel thickness to make up for fiber thickness is like gambling. Personally, I want my steel thickness on the 12R, so I'd keep them all as thick as possible (like the 2.0 mm on the modded clutches) and adjust fibers to get my total stack height.
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Hawkman
Zone Head
Posts: 747
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posted June 12, 2002 02:34 PM
I've found out it's just the nature of the EBC plates. They're heavy duty and feel stout like a mofo. They liked taking off from a dead stop like a drag race, but with rpms around 1-2k, they were super grabby. I'm sure it'll subside with time, but I'm not that patient. I put my friend's OEM plates that had 3k miles on them in there. They're butter, but I don't have the confidence in them to drag launch. [shrugs] Gotta get those 6r springs! I've been missing 3rd gear when doing long 2nd gear wheelies. Bike comes crashing down...not good.
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