Originally Posted by Pat
I think what you are talking about is probably rust. In humid central Florida, I have found that my chain will rust if I do not clean it and relube it after every wet ride. Otherwise the chain rusts.
ditto.
wd40 and a toothbrush work just fine. then wipe down and lube.
i rode 25 miles in a downpour a couple of months ago. now my bb creaks. the irony is that i was riding home from a tune-up.