Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 6 Post(s)
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If water got in, which is very possible, than odds are that you're hearing the effects of rust. It's possible that if you fieldstrip the BB now, the damage might be minor enough that it can be saved by cleaning and greasing (not an option with cartridge BBs).
However, it should still last for quite a while without service, and odds are the damage is already done, so you might as well finish your trip and replace the BB when you get home, or keep riding it locally until it finally dies.
For future reference, BBs vary greatly in their rain resistance. On BBs which can be serviced, the grease itself can also make a tremendous difference. If you, like me, expect to ride in all weather conditions, factor that in your choice for the replacement BB.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance