rear sprocket help

[spannermonkey]

hi quick question bout nc24 (86)
should the rear sprocket have any play and if not which i suspect is correct what would cause it because everything is tight. could it be a bearing of some kind.

cheers

[RICKNC31]

The rear sprocket is bolted solid to the sprocket holder which slots into the cush drive rubbers so although the sprocket will not move the sprocket holder will have a little bit of movement fore and aft which takes up the shock of gearchanging giving the rear chain an easy life. there would also be movement if there is a bit to much play in the sprocket holder bearing and you would have to take out the rear wheel to check for play in this bearing hope this helps rick

[CMSMJ1]

Welcome spannermonkey.

In which direction to you feel play? Side to side, fore and aft?

Be worth getting it apart and checking it out for obvious issues.

[Hogdigerdy Dog]

Welcome spannermonkey.

In which direction to you feel play? Side to side, fore and aft?

Be worth getting it apart and checking it out for obvious issues.

whip the wheel out and have a look
a chain running off the sprocket at speed, is rarely pretty

[spannermonkey]

fore and aft mate theres about 5mm each way . when im riding along i can feel the chain and sprockets kind of grinding and jumping its worse at a slow constant speed

[thunderace]

Sounds like the chain tension adjuster cam is fooked then.

[spannermonkey]

how can i check if it is the cam thts away

[thunderace]

Adjust it with a C spanner and make sure you tighten the pinch bolt back up afterwards. If you can still move the wheel back and forwards (ie; adjusting the chain tension), it's fubar.