cg125 chain/rear wheel problem

[rich262]

hi realy need some help with my cg125 that brought last week after i got it home and took the chain guard off found that the chain looked like it has never been looked at so cleaned it all up and noticed it had tight and loose spots like 20mm difference in the free play. so thought chain must be shafted ordered new chain and sprokets fitted them but is still the same gutted.
im pretty sure its a problem on the rear wheel because i put a mark on the wheel and its allways tightest when its at the top i cant think what could cause this because if it was bearings surely be more random . any idea's thanks

[AndyB1989]

have you checked thewheel is centred properly and running true ?

[rich262]

yer wheel is straight and centered and when spining looks fine its as if the sprocket is off center but it fits fine on to the wheel and cant realy be in any other posishion iv had it off an put it back on but its the same cant get my head around what could cause it

[AndyB1989]

it does indeed sound like the sprocket is off centre ... how odd

[lozzypop1]

[rich262]

hi its a 2001 with 17000 miles on it.
is it a seperate part then i thought it was all part of the hub were it mounts on ill get the wheel back off tomorow and have a look for that thanks

[hornetmike]

All my bike haves had tight and lose spots, might just be wear the chain has worn un evenly and the chain is at the end of it life ?
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87 Honda CG 125 - 97 ER5 - SR 50 -81 Z250- 96 CBR 600 F- 94 GPX600R 88- GPX 400R- 87 GS 125 - 2006 Honda CB600F- 2003 ER5 - Honda CBF 1000 2009 - Honda CBR 600 RR 2011
Current BMW R1200GS 2010

[rich262]

had the wheel back off and the is very slight wear on the hub so this must be the cause wat a bugger cus i think that means a new wheel as it all seams to be 1 part on mine thanks for the replys any way