SOHC.co.uk Forums > CB500/550

Clutch slip

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s7paul:
I did 34000 miles in 2 years on my first CB500, and never experienced clutch slip. I sold the bike with 46000 on the clock.  I've only experienced slippage on my current CB500 when I stupidly put fully synthetic oil in it.  Since I got rid of that, I've had no further slippage, but the clutch has been very grabby - more like an on/off switch.  I read that a cure for this is to fit the friction plates from a CB450, which I did, though only recently, so I haven't yet had chance to fully test it under all conditions.

florence:
The clutch on mine has always slipped a bit and I thought this was just a 'feature'.  It has the same clutch as my CB350 and that was prone to slipping under hard work.  The mad thing is I think it also has more or less the same clutch as the CX500 and that never slipped.

The mileage of this engine is pretty low but it is using the plates which came with it from the factory.

The oil I am using currently is 'Rock Oil Gamma Mineral Motorcycle Oil 10w40' which is, I think, very 'mineral'.

I might start by checking the adjuster and re-adjusting.  If that fails then I will take off the clutch cover and try some heavier springs and new plates. 

It's driving me mad.

Ian DB:
The clutch on my 500 K2 would engage all at once when setting off and also slipped badly when opening up the throttle. I too thought that this was normal especially after reading the article in the brooklands book (Honda CB500 & 550 fours performance portfolio page 74).
However when I replaced the clutch cable which was too long as the bike was a USA import but the previous owner when putting UK handle bars on didnt change the cables, I also striped down the adjuster, cleaned out all the old grease etc and replaced the return spring that had stretched, re greased the adjuster and all now ok. Lets hope it stays that way

Ian

Bryanj:
I will say that cable run (and cable type) makes a vast difference to the 500, my first 500 would always slip if a gave it some severe wellie from standstill and would keep on slipping through the gears BUT the takeoff was spectacularly quick and in 3 years of trying i never burnt it out---Ahhhh those were the younger days!!

matthewmosse:
I've always found with all my Hondas that any seemingly bad fault developing is very often cured by some element of servicing, cable runs, and lubing and chain tension etc. They tend to remind you they are due a service - I know where the oil level is on my bikes by the engine noise, as it reaches the 'low' level on the dipstick they all develope a definate rattle and I know to top up, particuarly handy on my rebel 125 as it will do 1000's of miles using no oil then burn 1/2 a pint in a few 100. The thing now rattles most of the time though regardless of oil.

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