Binding rear axle

[JJ39]

Hi
Recently took rear wheel out in the process of replacing front/rear sprocket (up 2 teeth) and disc on 98 FZS600. Went to refit wheel (not having changed front sprocket to smaller size) and, with the larger sprocket, standard chain at it's limit. Was replacing front sprocket too and now have the slack I need but at the time rear axle was tight to get back through so admit to a few taps of encouragement with a soft mallet to get it back through the wheel.


Now find that the rear axle seems to not rotate freely, it seems to snag/catch about every sixth of a rotation.  Initially looked for binding chain but no.  With rear brake caliper removed it still does it so not that.  Makes no difference if axle nut torqued up or not. Might have always been like it.


What has happened?  [size=78%] [/size]

[darrsi]

I would've thought the bearings would be a more likely culprit.
Can you not check the axle for straightness by rolling it on something flat?

[Ruby Racing]

I would've thought the bearings would be a more likely culprit.
Can you not check the axle for straightness by rolling it on something flat?

Agreed. Check the bearings by hand to see if you can feel any notchiness.


Axle is another possibility. A piece of glass is the best surface to test on as they are as flat a surface as you can get.


I was going to suggest a missing spacer, but if you removed the brake caliper and it still does it then unlikely.


If you are replacing sprockets then unless your chain has only done low miles, you should really be replacing the chain also. Otherwise you're likely to wear out the sprockets in double quick time.