Hoping somebody can help me - I’ve got an Intrepid Cruise MS3 with the Vortex ROK GP motor. At the end of the season, my clutch would make a nasty squeal as my kart rolled to a stop. I can get it to squeal when I have the kart on the stand and turn the rear axle with a bit of of speed.
A guy at the track indicated my clutch uses a bushing that needs to be lubricated. What do I lubercate it with?
Another guy said get rid of the bushing and go for a proper bearing.
I was looking through the ROK manual, and I beleive I have found the part requiring lubrication, and the replacement bearing.
The Z11.Z12.&Z13. in your pic. refer to the 11.12.&13 tooth sprockets. The 12&13 tooth use the needle roller bearing. The 11 tooth sprocket (which I assume you have fitted) uses the plain bush. See www.koene.com.
To lubricate the plain bush just run a few drops of engine oil between the clutch retaining washer and the sprocket using an oil can.
Is there any advantage to running the full needle bearing vs the bushing? I know the number of teeth on the engine sroket will change the gearing… but is the needle bearing better?
I don’t think there is any performance advantage. The bearing is only ’ operating’ when the clutch stops driving fully.
OTOH Vortex don’t use the plain bush on the 12t or13t sprocket.
If you can get suitable gearing you might consider a change to a 12t with the needle roller at some point and use a high temp. grease. Possibly longer ‘life’ with less/no ‘squeal’.
