What have you done to your bike today?

Quick clean, tune up, torque check and chain swap before jerseyman.
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I am surprised the trouble these two little suckers caused! The bike was shifting perfectly fine but would randomly up shift a few gears.

I stumbled upon a YouTube video that stated it was a common problem with SLX derailleurs and he recommended the XTR jockey wheels as an upgrade. It was only 10 bucks more than the SLX wheels and allegedly they last longer. And I sure as hell wasn’t spending 300 plus for ceramic jockey wheels..

I added some extra grease but didn’t notice any significant differences to be honest (slightly different cap design), maybe it’s all internal.?.? But my problem seems to have disappeared.
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Bike N Gear said:
Noticed my Kane Head High headset shim stopped working. Replaced with actual brass shim stock to see if it will last longer.

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What's being shimmed? Headset cup for a better bearing fit? You might have better luck sizing the shim "properly" (ie, no overlap), joining the ends with a torch, and installing it with green loctite. Once cured, run a headset reamer through it. If you size the shim up, you can make a perfect fit with the reamer--it won't mind munching through slightly-too-much brass.

The headset reaming tools for oversized bearings aren't common, but some shops do have them.

BTW, beer can shims can work fine, just make sure you soak them in acetone to remove the plastic liner that all modern cans have.

Even if you don't ream it, it can be a good idea to make a solid ring shim, as installing a shim on a cylindrical surface like that when it is split can be an exercise in frustration.
 
Karate Monkey said:
What's being shimmed? Headset cup for a better bearing fit? You might have better luck sizing the shim "properly" (ie, no overlap), joining the ends with a torch, and installing it with green loctite. Once cured, run a headset reamer through it. If you size the shim up, you can make a perfect fit with the reamer--it won't mind munching through slightly-too-much brass.

The headset reaming tools for oversized bearings aren't common, but some shops do have them.

BTW, beer can shims can work fine, just make sure you soak them in acetone to remove the plastic liner that all modern cans have.

Even if you don't ream it, it can be a good idea to make a solid ring shim, as installing a shim on a cylindrical surface like that when it is split can be an exercise in frustration.
Click to expand...
It's actually a shim between the headset cup and the carbon frame. The fit is rediculously loose.
 
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