Author Topic: Flywheel Clutch Problems SW CW  (Read 3570 times)

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Offline Alan Cun

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Flywheel Clutch Problems SW CW
« on: 17 Sep 2009 at 10:00 »
Hello All, Had a personal request on what could be the problem with clutch slip. Now as this is a common problem with a Doug I thought it a good idea to  wave it past the forum for maybe extra comment.

Now as I see it during some time in the engine life the flywheel may have come loose and subsequent wear on the taper causes the flywheel to move closer to the crank case. Now this would cause the distance or space between the scissor lift mechanism and the clutch free plate to hold or lift the friction plates apart.

Another reason may be that thicker friction plates have been fitted.

Now I am not sure of the distance but assume around 1mm of clearance for the scissor lift or maybe even an amount of cable compression before the four springs start  to compress. Should be able to feel sideways movement of the scissor setup.

So whats the answer??? The only way I can see is to remove from the alloy section of scissors some of the metal facing or coming into contact with the crankcase.

And as I have mentioned before if the primary chain looks right it is probably too tight. Too tight a chain causes the sprocket clutch disc to distort in the direction of the gearbox.

regards Alan

Offline Ian

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Re: Flywheel Clutch Problems SW CW
« Reply #1 on: 17 Sep 2009 at 23:03 »
Alan, I had a similar problem with my OC when we strengthened the clutch sprocket attachment - I no longer had enough clearance for the thrust race. I replaced it with a sintered bronze one and it works perfectly