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Clutch Issues

Talk about all your non-Zed or even Kawasaki bikes here.

Moderators: KeithZ1R, chrisu, paul doran, Taffus

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Royalratch
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Clutch Issues

#1 PostAuthor: Royalratch » Fri Jun 05, 2015 9:53 am

Hi lads.

On my 'other' bike feel like clutch is slipping (acceleration does not match not revs) after 4000rpm.

Its done 8500K and pretty sure its the original clutch. Shouldn't these last longer? Its an 08 Speed Triple.

I've adjusted the cable so its on maximum slackness at both ends but still slipping - so the clutch is worn?

When I replace it - will it be obvious that the plates are worn - should I measure them.

Doubt it could be anything else...

Thanks!
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#2 PostAuthor: PAULJAC47 » Fri Jun 05, 2015 12:58 pm

Not using car oil by any chance?
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#3 PostAuthor: Royalratch » Fri Jun 05, 2015 1:14 pm

Nope.

Fully Synth Castrol Power 1 bike specific oil - as per Triumph's recommend.

Though some people say full synth causes slippage - which seems plain wrong to me.

The fact that the cable is all the way out points at a when clutch...
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#4 PostAuthor: jimmock » Fri Jun 05, 2015 1:28 pm

Royalratch wrote:Nope.

Fully Synth Castrol Power 1 bike specific oil - as per Triumph's recommend.

Though some people say full synth causes slippage - which seems plain wrong to me.

The fact that the cable is all the way out points at a when clutch...


Isn't "fully synthetic" too "slippy" for a wet clutch??
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#5 PostAuthor: KWACKERZ1 » Fri Jun 05, 2015 1:34 pm

Fully synth is fine if its designed for the job,

Yo need,
JASO MA rated oil. which is
Japanese standard for special oil which can be used in 4-stroke motorcycle engine with one oil system for engine, gearbox and wet clutch system. Fluid is non-friction modified.

So check the specs.
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#6 PostAuthor: Royalratch » Fri Jun 05, 2015 7:09 pm

Cheers lads.

Castrol Power 1 10/30 or 10/40 is what Triumph recommends?

Correction! Its semi-synth...
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#7 PostAuthor: mikey » Fri Jun 05, 2015 8:02 pm

Had to replace the clutch on my speed triple (1995 reg)
at 36,000 miles
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#8 PostAuthor: Royalratch » Tue Jun 09, 2015 7:34 am

So I got the clutch out for inspection.

To be honest I can't see anything wrong. The plates all came apart easily (so no sticking) and the steel plates show no sign of scoring or burning. The basket and ears also appear fine.

The friction plates I don't really know if they're worn or not - perhaps you guys can tell me. The actual friction blocks seem very low but that may be the normal height. Some new clutches are thicker and some are low so can't tell.

Image

Image


Should I just put them back and try a new clutch cable first? Don't really want to change the oil as its not even done 1000 miles.

As I said, the bigger concern is why this has happened at only 8000k. :frown:
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#9 PostAuthor: ZedHead » Tue Jun 09, 2015 8:39 am

Plates look fine to me and i doubt it is the the cable if there is free play at the lever. I would measure the springs while you have it apart but i think oil is the number one suspect.
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Re: Clutch Issues

#10 PostAuthor: chrisu » Tue Jun 09, 2015 8:41 am

Royalratch wrote:Hi lads.

On my 'other' bike feel like clutch is slipping (acceleration does not match not revs) after 4000rpm.

Its done 8500K and pretty sure its the original clutch. Shouldn't these last longer? Its an 08 Speed Triple.

I've adjusted the cable so its on maximum slackness at both ends but still slipping - so the clutch is worn?

When I replace it - will it be obvious that the plates are worn - should I measure them.

Doubt it could be anything else...

Thanks!


you haven't fiddled with the clutch lever or master cylinder recently have you ?

could be a lack of any 'slack' in the hydraulic system causing a slight pressure on the clutch

don't ask me why i'm suggesting this.... :oops:
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#11 PostAuthor: Royalratch » Tue Jun 09, 2015 9:20 am

Hi mate.

Cable clutch so no hydraulic issues. Correct free play dialled in.
Last edited by Royalratch on Tue Jun 09, 2015 3:24 pm, edited 1 time in total.
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#12 PostAuthor: Hinckley » Tue Jun 09, 2015 11:37 am

Could also be Weak springs, I've not had a Triumph but had a similar issue with my old aprilia that was weak springs
It would be economical to change them, there may even be heavy duty ones available or ones off another model that are stronger.

Swap the plates about when you put them back.
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#13 PostAuthor: KeithZ1R » Tue Jun 09, 2015 11:55 am

change the springs had the same issue recently...new springs, £25 ..sorted
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#14 PostAuthor: Royalratch » Tue Jun 09, 2015 12:24 pm

Cheers lads. Have ordered new springs and clutch cable from Triumph.

Thought swapping the plates about was a no-no?
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#15 PostAuthor: Hinckley » Tue Jun 09, 2015 1:36 pm

Royalratch wrote:Thought swapping the plates about was a no-no?

Save for the first driving plate on some bikes - They are not a matched set, they are mass produced items.
They bed together and 'burn' when they start slipping leaving polished areas.
When you mix them they have to bed-in again. if necessary scuff the faces of the steel driven plates with scotchbrite or wire wool to clean them up.
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