Rear Sprocket Slipping

mick29 · #1 12-04-2009, 12:44 AM

Howdy its mick29 here I recently bought a 40t rear sprocket with a mounting carrier that clamps to the rear wheels hub ( im shaw youve all seen them ) my problem is it keeps moving very slowly round the hub ive tried retighten it but still moves Has anyone had the same problem and how can it be fixed Is there a glue or something to just stop it slipping that little bit Thanks mick29 PS HAPPY RIDING

K.i.p · #2 12-04-2009, 05:23 AM

Just a couple thoughts on this. I would sugest conferming the fit of the adaptor to the hub. Use a sharpy to mark up the inside of the adaptor and then fit each half to the hub and rotate it back and forth, inspect the inside of the adaptor for contact to the hub. If it is a good fit the ink should be scuffed fairly evenly. If the adaptor is too big you will see one contact point in the center of the radius, if it is too small the outside edges will show contact.

That being said and assuming you have aprox. 80% contact or better, you might consider some double sided tape. (We actually have machined parts with this stuff). If you have a good fit and tighten the adaptor over the tape I dont think it is going to slip, I reckon you end up with six square inches of purchase, traction, or grip.

It sonds like some locktight could be used on the bolts. Get your chain alignment set up, then locktight one bolt at a time.

Discalimer: These are just common sense assesments not based on an actual application. Hope it might help.

bairdco · #3 12-04-2009, 05:25 AM

cut up some shims out of a beer can.

K.i.p · #4 12-04-2009, 05:38 AM

Oh sure, throw beer cans and handlebar seat posts at it! Kidding man.

Venice Motor Bikes · #5 12-04-2009, 11:24 AM

Quote:

Originally Posted by bairdco

cut up some shims out of a beer can.

The 'beer can shim' is a stellar idea!!!

Wrap the wheel hub in strip or two of the can & mount the hub adapter onto that... problem solved!!

azbill · #6 12-04-2009, 12:38 PM

gives you an excuse to sacrifice a brewski...for the bike !!!

K.i.p · #7 12-04-2009, 04:09 PM

..a Pabst-e-traction drivetrain. I don't understand how a shim would solve the full range of possable scenerios but ...*crack-pop,..*fzzzzzzz.......never mind.

mick29 · #8 12-04-2009, 04:10 PM

Thanks for all your help guys I will try the beer can Sounds like thirsty work I wonder how many beer cans will fit? Thanks mick29

**2door** · #9 12-04-2009, 07:36 PM

Quote:

Originally Posted by mick29

Thanks for all your help guys I will try the beer can Sounds like thirsty work I wonder how many beer cans will fit? Thanks mick29

I'd start with a twelve pack and move on from there.
Tom

bairdco · #10 12-04-2009, 08:23 PM

beer can shims work great when your handlebars strip out too...