belt slip at 5500 rpms

Hi john here.Last nite I took the variator and clutch apart for inspection and weight change. I cleaned it all up put new mallossi 21g rollers in the variator and deglazed the clutch shoes.All original with 34000 miles I also put some grease on the needle rollers.When I put it all back together and torqued all down went for a ride..The bike ran lovely and smooth with good pickup.The problem I have is when it gets to around 5000 rpms and give it some power it spins up to about 7000 before it gets its act together and pushes me forward.The belt was changed at 22000 .The clutch looks like it has got plenty of life left.rpms at 70 is 5500 on a level road 8000 at 105 Would a worn belt manifest its self in this way .thankyou for any clarity on this as im enjoying the perfomance with the lighter rollers.

Why you wouldn't put a new belt on when doing all that work surprises me. You have 12k miles of wear on that belt. Suggested replacement is 16k miles I believe. Hopefully a new belt fixes your slippage issue. It is possible you could have installed the old belt backwards.

Cheers for your reply bigbird its only 45 mins work to exchange belt rollers and look at clutch. In all honesty I wasnt in there for a belt change it was to check the clutch shoes for wear. would a belt slip at those specific revs when worn could this be a tell tell sign of a worn belt.Just didnt think the belt would do that.

john&lesley wrote:

would a belt slip at those specific revs when worn could this be a tell tell sign of a worn belt.Just didnt think the belt would do that.

Something is slipping. It could be the belt or the clutch. You will need to open everything back up to check if you want to solve this problem.
Did your V-Belt light illuminate when the slip occurred?

If your work and reassembly was all done correctly, what could possibly have happened? Could the fresh grease have contaminated the clutch? Could the belt be in backwards?

Belt going in the right direction I did put a fair bit of grease on the roller bearings but woulnt the clutch slip all the time under acceleration

Edit no no v belt light on when slipping hope this helps

While it does take a moment or two for the system to 'spool up' when you try to accelerate while at (freeway) cruising RPMs, I have never noted that those RPMs have increased to 7000 before everything kicks in. For me it is just the nature of the beast.

The SW 'transmission' is a pretty simple affair, so unless you've got grease or oil on the clutch shoes, variator faces or belt, or the belt has been reinstalled backwards, then, as BigBird mentioned, it's due for a new belt.

Tim

Thanks all I will order a new belt and then take the clutch out again to see if there is any grease on the clutch shoes

Sorry for the late reply - there is no fixed RPM for a given speed. There's a helix mechanism on the rear pulley that serves to lower the "gear" ratio when accelerating, for better pickup. 2,000 RPM sounds a bit high, but you should be able to blip the throttle and see an RPM increase that doesn't match the speed increase.