Author Topic: Clutch Plates  (Read 557 times)

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Offline Phoenix

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Clutch Plates
« on: August 29, 2020, 08:44:49 AM »
Had a problem when the bike heated up from stop and go in 90 degrees.  I had replaced the fibers not long before with "clutch plates" I got from a parts dealer.  Could not shift gears and the clutch would not dissengage.  Ended up screwing up the clutch counter gears by craming it into gear.  Took it apart and drilled holes in the hub as Mark suggested.  Also, using 20w-50 as he suggested.  Also replaced countershaft o ring as suggested.  So I got in a stop and go line to get into the Indy Mile and the same thing happened.  If the plates are warped, how would the adjustment change or do they just warp when they are hot.  Honda fibers are $24.  I was thinking of getting ebc fibers and then checking steels to see if they are flat.  Any suggestions as to a path forward.  Getting ready to head south-Dragon, Cherohola and BRP.  Would love to fix this first.
Thanks,
Ed Spengeman
Indy
1971 CB750K1 (Stock)
1973 CB350 Twin  (Gone)

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Clutch Plates
« Reply #1 on: August 29, 2020, 09:34:41 AM »
Did you pre-soak the fibers in oil overnight?

What bike? Correct number of plates/fibers for your bike model? Which plates did you get?

Gotta be more specific.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Phoenix

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Re: Clutch Plates
« Reply #2 on: August 29, 2020, 10:55:08 AM »
The ones I put in are Versa.  It's a 71 cb 750.  How can they work fine until they get over-heated.  I think the first time it happened, I was able to adjust the clutch at the lever and get it into gear.  Don't know if I can depend on that.
Ed Spengeman
Indy
1971 CB750K1 (Stock)
1973 CB350 Twin  (Gone)

Offline PeWe

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Re: Clutch Plates
« Reply #3 on: August 29, 2020, 10:32:04 PM »
Oil is a motorcycle oil for wet clutch?
The quality of a motor oil is revealed by heat. Some will not keep the viscosity.
Try another oil.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967