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Cork clutch inserts

I read somewhere (on this Forum) that cork inserts (for a mid fifties model) are a No-No.

Regrettably I had already bought a load from RGM for the clutch chainwheel and fitted them.

I now have clutch drag. I've checked all the usual culprits; p/chain tension, even lift of clutch, correct adjustment of cable, clean plates,etc. It worked before so it's nothing fundamental.

One additional point, I've had to leave an insert and a plain plate out of the cluster as I can't get them on to the clutch hub but I can't see that this would cause drag.

So it could well be down to the cork insets. If this so so, why does RGM still sell them? Rhetorical I know, but it does seem strange for a Norton supplier to supply parts that are inappropriate - if indeed they are?

George

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Just an update - clutch drag sorted by loosening off the p/chain a tad and relocating the clutch operating arm on the clutch arm to give absolute maximum movement.

Nevertheless my query still stands. Are cork inserts taboo over Ferodo pads?

George

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I believe that the Ferodo was fitted to all post-war bikes and seem to remember reading about how it was "oil resistant" or some such.

Cork is a really nice material - I had a cork lined clutch on my Sunbeam and it was very smooth - but does tend to compress so more likely to drag. And if it's allowed to slip to any great extent the corks burn.....


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