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04-06-2023, 10:42 PM | #1 |
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Join Date: Sep 2010
Location: Leics
Bike: M900
Posts: 2,844
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Sounds like You're not getting enough plate separation, so possibly the slave cylinder is not fully actuating or too thick a clutch pack?
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M900, 916, LeMans II. Last edited by Dukedesmo; 04-06-2023 at 10:44 PM.. |
05-06-2023, 01:32 AM | #2 |
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Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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Do you have an aftermarket slave (eg Oberon) and did you remove it? Some slaves have a small spacer between the piston and the pushrod. Is it possible this could have dropped out?
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05-06-2023, 05:49 AM | #3 |
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Join Date: May 2014
Location: Leamington Spa
Bike: Multiple Monsters
Posts: 96
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Yes, it does and ironically the wife (whilst barking instructions at me) pulled the clutch lever in while it was all apart. I will check that next, thank you
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22-06-2023, 01:54 AM | #4 | |
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Join Date: May 2014
Location: Leamington Spa
Bike: Multiple Monsters
Posts: 96
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Quote:
Thanks Rob
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22-06-2023, 06:56 AM | #5 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,834
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You shouldn't need the spacer on your 2006 model.
The spacer is to compensate for the shorter early push rods. Your pushrod could also have an "anti-rotation" pin which would certainly confirm it is the later longer type. It wouldn't work at all with a short pushrod if the spacer was not present. I'm curious as to what you mean by "lightly re-face the plates" and how you went about that.
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22-06-2023, 07:35 AM | #6 | |
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Join Date: May 2014
Location: Leamington Spa
Bike: Multiple Monsters
Posts: 96
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Quote:
It’s a little odd as I dismantled and rebuilt it in the same order, and with a medium dry emery rubbed each face a few times on a flat surface, nothing significant as you would if doing brakes. There isn’t much on them to start with so it was only very light. It has a non standard billet clutch slave, but I didn’t remove it and when I pulled the rod out nothing obvious came out with it but I’m now getting clutch drag because the clutch won’t disengage fully even on full lever adjustment. If I’d have taken too much off I would have the opposite being clutch slip. It really appears as if it needs more movement. I’m going to dismantle it again and see if anything obvious jumps out. One thing I did notice is that the plates had little tabs on them and I didn’t spot how they were positioned when I dismantled it. I refitted them in random positions.
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22-06-2023, 10:11 AM | #7 | |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,834
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Quote:
I don't touch brake pads or clutch friction material with anything other than clutch and brake cleaner and a toothbrush. The metal and friction material wear together to a near 100% contact area for best performance. Any abrasive interference reduces that and will require further bedding in, not to mention the possibility of embedding carborundum or other particles in the friction material. Dust is the worst enemy of a dry clutch. Is it possible that some dust remains in the clutch from the emery operation? A wash with clutch and brake cleaner is all it should need. I give mine an annual bath. Are the slots in the drums worn into little "serrations" where the plates sit? and do the tangs on the plates have any burrs? Those could hold the plates a bit, or tip them, as they will almost certainly have gone back in different slots. I know nothing about slipper clutches, but I can work out that there is some sort of automatic clutch actuation involved which must have a starting point. Is there adjustment on the slipper mechanism?
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22-06-2023, 12:57 PM | #8 | |
Too much time on my hands member
Join Date: Jun 2007
Location: Forest Of Dean
Bike: S2r
Posts: 3,195
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Quote:
Can be a right royal PIA to get working right. The 748R has one but it's really crude and was only fitted to homolgate slippers into the ducati race bikes of the time. Besides ii only takes a little finesse to rapidly run down the box as the ratios are so close to start with. If you have to start grinding away at the clutch with emery or filing the clutch basket where the tangs have made anything more than a smalll polished area then it's a sign from above that it's not well and a visit to your local parts emporium is indicated.
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"The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature |
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