clutch slipping on fs 650

ruxton64 · Aug 4, 2011

can anyone help me. ive got a fs 650 06 model and ive just changed the clutch plates as the old ones had gone but before they did they were slipping in higher gears as i was putting the power on , I just put this down to the clutch being knackered but now with the new plates in im having the same trouble. i think ive got 10 40 putoline oil in and its fresh in . starting to become a problem trying to over take in higher gears now.

greg

birdwoodburg · Aug 4, 2011

Did you soak the plates before putting them in? did you measure the free length of the old clutch springs?

Taffy · Aug 5, 2011

please measure the width of the clutch plates as a pack? 8 steel and 7 friction?

also, measure the width of the frictions for me?

have you a washer between the back of the basket and the gearbox?

regards

Taffy

ruxton64 · Aug 5, 2011

I will measure them over ther weekend.yer it was an 8 and a 7,I bought the plates etc from you a while back taffy jus havnt had the bike running for a while.its a stm slipper clutch aswel if that makes a difference and I soaked them for a day in oil.I get back with the messurements

Thanks Greg

Taffy · Aug 5, 2011

well if they are plates from me they will be good but the next question will be whether you have the STM set-up correctly?

regards

Taffy

ruxton64 · Aug 5, 2011

It's set up as I bought it at the mo.is it something id have to take it in for or can I do it myself?

Taffy · Aug 6, 2011

there are SM boys here that recall better than me but I think we did an engine with an early STM slipper in November last year and we had to have a 28-34mm or so allen key made! but my memory is vague on that one so you'll just have to see!

regards

Taffy

mk 4 · Aug 6, 2011

hello mate did you change the clutch plates ? did you measure the clutch pack coz its got to be 23.6 + or - 0.3mm if thats right .did you do the inner hub nut up too tight i think there 120nm and the internal hex is 40 to 48nm did you back the clutch leaver adjuster right back so there only just no clutch drag . if its still slipping id check what weight secondary spring youve got i think they range from 30 kg up to 70 kg . or give andy at hm racing a ring .

ruxton64 · Aug 21, 2011

Thanks for the help,ended up taking it in 2 Dave clarkes and the back plate on the stm clutch had a big crack in it so back 2 a standard clutch, not good.can you buy jus the back plate for these easy enough? I heard ther expensive

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