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BIKELAND > FORUMS > ZX12R ZONE.com > Thread: The Clutch NEW TOPIC NEW POLL POST REPLY
Marv


Novice Class
Posts: 45
posted May 31, 2005 05:48 AM        
The Clutch

Another clutch question,

While riding in 4th gear rev's between 8k & 10k rpms I feel a slight slippage in the clutch. Does this mean its time to replace or can an adjustment be done?

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Editor


Administrator
Posts: 914
posted May 31, 2005 06:14 AM        
It's toast. Sorry.
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NINJA12


Needs a job
Posts: 3310
posted May 31, 2005 06:16 AM        
any slack in the clutch cable?
IF not you may be able to adjust and buy some time.
Ususlly once they start slipping it's not long before
they are completely gone.

Some people will ride until the bike stops pulling
I don't recommend that, because all that clutch material
is in your oil working to kill your bearings.

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osti33


Needs a job
Posts: 2973
posted May 31, 2005 01:59 PM        
When it starts to slip it is time to buy a new one. Sorry.
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TurboBlew


Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
posted May 31, 2005 02:41 PM        
If you havent aligned the last fiber....then yes...there is still some life in it.
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marv


Novice Class
Posts: 45
posted May 31, 2005 08:58 PM        
Damm, Damm, Damm!!!!!!
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Editor


Administrator
Posts: 914
posted June 01, 2005 06:44 AM        
It's toast. Sorry.

1-800-buy-a-muzzys-clutch

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marv


Novice Class
Posts: 45
posted June 03, 2005 08:51 PM        
I have an 03 and this is the 2nd clutch to go bad on me?? anyone else having clutch issues?
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CrotchRocket


Moderator
Bracket Racing with Betsy
Posts: 8038
posted June 04, 2005 05:39 AM        
Thats the way it is...Just buy OEM Kawasaki clutches, 12 -1131 friction plates and 11 - 1123 steel plates all 1.6...Thats all you need!!!
____________
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*****DragRacers do it better, because they dont cut Corners*****

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TurboBlew


Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
posted June 04, 2005 06:09 AM        
If you continue to have clutch problems AFTER you have installed 6 HD springs from Brock, Schnitz, or who ever... you will need a lockup clutch or better gearing.

The 3 Muzzy springs work ok, but in reality you need 6 springs! Its all about static spring pressure.

2.0 steels help too.

Ive had OEM packs last 10,000 miles of HARD abuse. Remove all those mini springs and fibers too. Only use FULL sized plates and fibers.

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matt sterbator


Pro
Hiding in the bushes
Posts: 1367
posted June 04, 2005 07:51 AM        
Clutches are consumables on these bikes... kinda like tires and changing oil... lubing the chain, lol
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zrexpilot


Expert Class
Posts: 470
posted June 09, 2005 08:05 PM        
I need to do my clutch also. Why do you recommend 12 -1131 fibers and not the 1143 fibers ? They look like different material.
Do I chunk those spacers also ? The 2 sets of 2 rings.

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ninja12


Needs a job
Posts: 3310
posted June 11, 2005 05:36 AM        
muzzy clutch kit is a deal when you it's time to replace.
stock is ~$200.
The muzzy kit is ~$300, which includes
a drilled bearing , drilled hub, 3 heavy springs, set of steels and fibers.
It works.


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h0micide


Parking Attendant
Posts: 7
posted June 11, 2005 09:50 AM        
I have the muzzy kit in mine.The original clutch basket exsploded,and i do meen exsploded.
most of the fibbers and steels where ok though.and thay look and fill idenical to the muzzy ones.I just burn my cluch up yesterday.so bad 1st gear was like nuteral.So i took and orijenal steels and sanded the burnt ones and did a lil mix match.The fist fiber the one with the big i.d. i left out and started with a steel instead.works. So far so good.

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ninja12


Needs a job
Posts: 3310
posted June 11, 2005 07:31 PM        
I don't think you should start with a steel.
Start with a fiber, end with a fiber, you can put two steels
together somewhere in the moddle.
my .02

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NOX


Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
posted June 21, 2005 03:51 PM        
never start or end with a steel, and dont stack steels unless you want to make it slip. the only people that do that are those with lock ups that want to make the clutch slip, but still have the ability to lock the clutch down track.
____________
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6 Time Centerville Dragway Points Champion
Sponsored by:
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matt sterbator


Pro
Hiding in the bushes
Posts: 1367
posted June 21, 2005 03:56 PM        
Ummm, how is the clutch going to slip if you stack steels ?
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NOX


Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
posted June 21, 2005 04:03 PM        Edited By: NOX on 21 Jun 2005 17:05
less friction, the friction comes from the fibers and steels contacting, stacking steels is an old dragracing trick to get the clutch to slip out of the hole while using a lock up.

I have done it with this bike, my Pro ET ZX12

http://www.catalystracingcomposites.com/catalyst_racing_composites_011.htm
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers

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matt sterbator


Pro
Hiding in the bushes
Posts: 1367
posted June 21, 2005 04:12 PM        
All you do with stacking steels, is essentially create one thick steel. The steels don't have any friction between them since they're all on the hub and the fibers are on the basket.

Unless there's something I'm missing here.

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NOX


Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
posted June 21, 2005 07:50 PM        
It takes away clutch surface..................
____________
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21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers

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matt sterbator


Pro
Hiding in the bushes
Posts: 1367
posted June 22, 2005 07:51 PM        
I still don't see how this works, unless you're running less fibers or something.
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vozizm


Needs a job
Got Nothing Witty To Say
Posts: 4417
posted June 22, 2005 08:51 PM        
http://www.catalystracingcomposites.com/catalyst_racing_composites_011.htm
____________
VOZ

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ninja12


Needs a job
Posts: 3310
posted June 22, 2005 09:08 PM        
he is right!
BUT the muzzy clutch has already reduced the clutch surface area by ~8 percent,
If you are running a muzzy setup and you stack steels you only increase stack height.
If you were running stock setup and you add another steel you will probably have stack height too tall.


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eastbaydave


Needs a job
Posts: 2245
posted July 14, 2005 09:13 AM        
I had mine apart 5-6 times in the last year. I just can't get it to stop dragging/making it hard to shift at times (especially into 1st from a stop- ker-crunch! = loud!) It seems to be stack related? 11 frictions & 10 steels, & I keep trying changing sizes of the steels/varying the stack height- yet can't seem to find the "sweet spot."

Even tried (current install) back to back steels per somes suggestions, yet still I have the same problem. It FEELS like it is dragging very slightly, causing this poor shifting. Bike only has about 8K miles on it so I don't think it's gear dogs or shift fork related. .

I really don't do many burnouts/wheelies to speak of (a few, but not that often- most wheelies are power wheelies), & only been ot the drags once (4 runs/1 night) several years ago. It has the Muzzy clutch kit & billet basket installed. I would be at the drags if I could figure this out...

I'm really tiring of pulling the body work, clutch/cover/gasket trying to find the problem. It's getting really really old- especially on a low-mile machine. One of the numerous reasons I don't ride it much...

Any suggestions?
____________
Enjoy the ride!
02' ZRX1200
00' ZX12R sold

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your car is slow


Needs a job
Fuck Nitrous...Got Boost?
Posts: 4089
posted July 14, 2005 09:46 AM        Edited By: your car is slow on 14 Jul 2005 10:47
I think he is saying that if you at one time have 11 steels and 12 fibers....but stack a steel....you now have 12 steels and 12 fibers....you still have exactly the same friction area you once did. Still 24 fiber faces touching 22 steel faces (and the basket/pressure plate for the last two).

Im not a physics major or anything...but the pressure plate pushing on a steel/steel combo would indeed produce a pretty good amount of friction. There is far more surface to surface tension between two identical pieces of metal under high pressure...than the raised "ribs" of the friction plate

And if you are tired of pulling plastics....cut yours so you can take off the clutch cover without removal of the plastics.
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Do not taunt happy fun ball!

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