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Post by mannanan on Aug 20, 2018 14:23:48 GMT 1
Experiencing the start of some clutch slip at high revs. Still on the original 30 year old clutch that has 22,000 miles on it. Not stripped it down yet but rather than measure everything, should I really just throw in a brand new clutch as it probably deserves it. I don’t need to skimp on the money so Yamaha parts ( if available) will be used. I know the word average is unfair due to different riding styles but what sort of mileage would you expect from a clutch. Thanks.
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Post by stusco on Aug 20, 2018 14:26:18 GMT 1
In the 80’s 2000-3000,now lifetime
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Post by Tobyjugs on Aug 20, 2018 14:46:28 GMT 1
I have an engine which has around 2-3000 km. It was fitted with a new mitaka clutch basket which is s now showing signs of wear but the plates visually look good.
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oldgit
L plate rider.
Posts: 16 
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Post by oldgit on Aug 20, 2018 22:24:01 GMT 1
Plates are better nowadays, if its slipping it will only get worse not better. Replace it and while you're at it put some heavy duty springs in it. In my experience Silkolene light gear oil helps prevent slip, used it all the time in my race bike.
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Post by midlifecrisisrd on Aug 21, 2018 8:36:55 GMT 1
I'd deffo be having a good look at it
I don't think they like lying in oil without use
I've had a few clutches play up from lack of use
I've also seen them break up
Friction plates break into a few pieces. Still works but drags or slips
EBC plates are fine
Stick with standard springs on a standard bike with new plates
Steve
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Post by mannanan on Aug 21, 2018 16:15:22 GMT 1
Ok, thanks for replies. I shall start with some new friction plates and springs. Do the plain plates suffer much from warping or do the cushion rings wear much as a rule?
Is wear on the clutch thrust washers and centre bush normally an issue? Thanks.
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Post by abar121 on Aug 24, 2018 16:40:11 GMT 1
Has anyone tried Gecko clutch plates?
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Post by bare on Aug 27, 2018 1:12:49 GMT 1
Fit the larger Yama Frictions as a matter of course.. insignificant cost differences and give 30% more friction surface :-)
I use Ferodo race frictions in the larger size .. they Do Not slip.. ever. Steels rarely need replacement.. unless damaged.
Heavier springs are for Popeye types .. Pointless.
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Post by Gitram on Aug 31, 2018 17:15:00 GMT 1
what do you mean by "cushion rings"? The half dozen or so rubber rings in between the plates? Bin them and see how it goes after that,
marti
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Post by mannanan on Sept 2, 2018 13:50:35 GMT 1
Job now done. Original springs had life left and measured around 35.2mm but I replaced anyway with new standard Yamaha springs at £3.00 each. A couple of plates were below the limit and the rest were right on the limit so replaced with EBC at around £50.00 a set. Eyes watered when paying £22.00 for a genuine Yamaha clutch cover gasket but I am out of touch with prices. Also out of touch with routine oil changes. They storm grey liquid I drained didn’t much look like oil but when I checked it’s been in there 11 years and done 5,000 miles. Guesss that didn’t exactly prolong the clutch life but 22,000 miles on the original clutch isn’t bad. All in, parts cost around £100.00 and no doubt it will outlast me.
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Post by tony1964 on Sept 2, 2018 15:29:03 GMT 1
I used an Athena clutch cover gasket £6 from martin at mad biker designs, had no problems with it
Tony
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Post by stusco on Sept 2, 2018 15:33:57 GMT 1
4l04ever makes them , he can make all the paper gaskets in different thickness www.oldmoto.co.uk/ |
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