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??!?!?!

Are you saying that modern groupsets with external bearings do not suffer the same problems as older BBs in italian threaded shells?

Do you know why?

I'm curious because my two go to road bikes both have Italian threaded BB shells and I have just sufffered my first experience of wondering why I couldn't get into the big ring (assumed it was my fuck up tightening the gear cable after recent adjustment) before finding the crank lock up on me completely. I have been thinking about upgrading one to a more modern groupset, and I have been considering whether to go down the route of selling all Italian threaded frames to eliminate unthreading (and eliminate the hassle of finding a new BB when you want to swap a groupset from one frame to another).

Yup my old CX bike had Italian Centaur square taper and kept undoing, replaced with FSA Exo Carbon - no issues at all, nor should there be. Same with Ti Van Tuyl, Ultra Torque cups don't undo.