I have an issue with a track/ race mc28 bike that I currently prepare and I hope someone has an idea of what's happening as I'm scratching my head for two days now.
Clutch handle lever and cable are adjusted to their maximum position and there is still a need of more travel to disengage the clutch.
Specs :
5 fibre plates, all the same (no plate with dampers).
6 steel plates, all the same (no thin plate equals +0.9mm at the total thickness of the plates).
Some photos that might be of help?
First photo shows that the last steel plate protrudes from the inner hub (about 0.7mm). One steel plate is thicker so it looks normal to me.
Second photo shows that the push rod top hat is quite recessed into the pressure plate (about 3.7mm).
Pressure plate completely clears the basket.
Ignore the wet clutch plate, makes no difference with a dry clutch one and they have exactly the same dimensions.
Clutch lever, push rod, 1/4 inch bearing ball and top hat have NO visible sign of wear.
I have swapped clutch cables, levers, handle brackets etc and the problem remains.
I do not have a thin steel plate to test if it would solve the issue but removing a steel plate did solved it.
I fabricated and installed a 2mm metal shim on the push rod hat and everything works fine but obviously this shouldn't have been a necessity, should it?
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