Hello lads, anyone has the same problem that the clutch drum has some play ? I am not sure if its common thing or not…Its problem to proper align.
Thank you
120043037_337313354378331_6631333657667957638_n|666x500 with rear sprocket
Some play is normal, how much play is there?
Mine has a little play less than about 1-1.5 mils, it may not even be that much, I’m not great with measurements without a tool lol. when I holdthe drum and move it back and forth it moves a little which I believe is normal for proper engagement?
My super rok has play, wich is normal for rok gp/superrok. My x30 have almost nothing
I dont how much exactly it is, but i can measure whils i will be in the garage, but i think it could be around 1-2 milimetres
I find that in clutch assembly there is some bell plate (number 172) but i dont have it, my friend doesnt have it too and on official video of rok gp disasembly there is no plate either 
So is it necessary to have this bell plate?Maybe thats the reason why there is a play.
https://www.kartstore.it/index.php?option=com_eshop&view=category&id=255&Itemid=546&lang=en-gb&fbclid=IwAR0qYFjjnWPU0OtcNxUMxnsIj9eIlWi_meTGYG-eS4hKP-4Evm_EPTsErfY
If you are referring to the bell plate, I honestly have never seen that before. I don’t run it on mine and I know others that don’t run it either.
Sorry you did say bell plate my bad, I read it too quicky.
My superrok has been re-built by one of the most respected builders around here, even with original sprocket with copper bushing. I dont have that plate either, and this is my play. I think those motors needs this play. Funny that my x30 dont…
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Yeah, i have the same play as you, so it looks like its a normal thing Thank you
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This thread was helpful for me today so I’ll add my experience here, just for the record as we had a problem on track with my son’s Ex Rok yesterday which I traced down today to be caused by the bearing face on the sprocket being worn about 0.1mm:
What we observed was that we could’nt start the engine when the kart was on the ground. I’m pretty sure what happened was that when the cart was put on the ground with driver in, the chassis flexed a bit and increased the tension on the chain pivoting the bell a bit to bring it in contact with the clutch…
New sprocket on order 
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Went up to a 12 sprocket as it has a roller bearing which I feel intuitively will be better than the bronze bearing on the 11 sprocket.
There’s axial play, but no lateral play so the clutch bell doesn’t twist like it did with the worn down bearing.
Video showing play with the new bearing fitted
Lesson learned: Check your clutch bearing, replace when worn to prevent problems. Also keep it lubricated to extend its life 
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