Originally Posted by
LesterOfPuppets
Winner! Yep poor ol' bottom pulley.
Drivetrain is even cleaner now, I was part way through cassette scrubbing when I spotted that crack, had to run inside to grab the phone for photographic evidence.
Never seen that in 50 yrs of breaking bike ****, but looks like they were ready for replacement with one of those $400 ceramic sets, anywayz.