Clutch adjusted correctly, frees easily before starting the engine, then it drags, hard to put into gear, after running for a short while the clutch does not free when the lever is pulled right back to the handlebars, in fact when you do this the bike would move forward but for the brake being on. Tried all the remedies, cannot find anything wrong.
One bike has an upright gearbox, the other a laydown gearbox. Both 500cc inters 1949 and 1955. I am wondering whether the fault lies with the reproduction clutch friction plates which are in fact thicker, and I guess using a different friction material. I have never had this problem with any of my other bikes using the same gearboxes and clutches, gear changes were always smooth with no hint of drag.
Anybody else have this problem with reproduction friction plates, and what is the solution?
Its a bit odd that your…
Its a bit odd that your clutch was performing ok and then went off. It suggests that maybe one of the springs or the nut has broken/come loose. I do know that a light clean clutch can be an elusive ideal and that its getting everything as right as possible thats the key. Lots of small improvements add up.
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How many plates?
Just a thought - with the thicker after market plates (both friction & plain) the clutch should contain one less of each type. Any chance that you have filled the basket with the original quota?
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Clutch plates
I fitted some new plates in my '55 clutch and had to reduce the number I put back. I simply couldn't get them all on. Works fine (once adjusted!)
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A friend had a problem with…
A friend had a problem with a dragging clutch, it turned out to be the spring cups dragging in the clutch body, it turns out that it had the wrong cups. Might be worth checking that they are free.
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Hi Robert I had a similar problem with a later gear box and clutch. Check that the clutch spider has clearance between it and the sleeve gear main shaft . The later spiders have a washer where the wider spring washer and nut hold it to the main shaft to stop it going on the main shaft to far.