I got on the trainer yesterday and noticed that my cranks were a little wobbly. I took them off, tightened what seemed like loose BB cups and reinstalled. The wobble is still there and seems to be inside the BB cartridge so I guess it's dead and will need to be replaced.
It is square taper. I'd previously been on cup/ball BBs so this is my first time on an insert unit. Riding on the trainer let me look down and really see the cranks easily so I'm not sure how long it has been bad. I have been hammering away riding this bike for the past weeks and didn't notice it, so I assume it just let go all of a sudden.
A) So while I wait for a BB to come in, will I kill other things if I get a few trainer rides in?
B) I also have an Ultegra octalink BB and crank i could throw on the bike (they are nice and light) but I'm not sure if it would be a bad idea because the Ultegra crank is 172.5 and I have 167.5 on it right now.