Originally Posted by
JohnDThompson
A cottered crank suggests the bike may be older than 1980s. What does the fixed cup look like? Does it have flats for a standard fixed cup wrench to grab, or perhaps notches like this (found on my 1974 Atala):
I had a devil of a time getting that cup out. Sheldon's tool failed for me, but the professional version eventually managed to get it out:
That's the exact cup taht I have. I don't have the specs on the bike, I just guessed 80's. But yeah, that's the sob that won't budge... haha