SOHC.co.uk Forums > CB500/550

Clutch slip

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florence:
has anyone successfully cured the dreaded clutch slip and if so how? mine is bugging me, I can't seem to get up to a good speed without it being a problem, especially if I go over a bump in the road; gear changes I can usually manage but road bumps are frequent around here.

I have thought about stronger springs.  If so, does anyone know a good supplier. 

Surely the racing ones don't have this problem and they have even more BHP to contend with.

Johnwebley:
I replaced my clutch plates about 10 years ago,used the original springs,and so far seems to cope,

no slip,but lots of drag !!!

 I finally decided that as the plats got hot,they stuck in the basket,so I trimmed/filed the outer "tangs" so there was more movement
and so far the drag has gone,

I suggest the springs are ok,but you need new fibre plates,

LesterPiglet:
I haven't had a problem since I rebuilt mine 5k miles ago. I filed the rough off the edges off the basket. Previously it was like yours, slipping when hitting bumps, especially in the upper gears.

matthewmosse:
I cannot recall how I fixed mine when it last played up, but it was a non invasive  fix, either the adjuster or the push rod through the gearbox, service, adjusting etc. That didn't slip even tugging a chair with a whole 500/4 and toolkit spare fuel and oil in the chair. It did at one stage get really bad but whatever the fix was didn't even need the cluch cover off. The new boxed heavy duty plates and springs the bike came with ready to fit were never fitted in 100 000 miles and are still floating around the attic awaiting being needed.

Lobo:
Understand that using a full synthetic oil can give rise to clutch slip...  if indeed using this a swap back to recommended oil might be a start.

And assuming clutch set up as per the manual..

In my CB500/550 manual these various specs if of any help... eg length of springs & so on. 
Good luck..

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