Get a bolt that just fits through the BB cup and tighten a nut on to it in the direction of undoing the cup so that you can tighten on the bolt until it grips the cup and undoes it.
A little gentle heat with a decorators heat gun around the frame BB helps too.
Get a bolt that just fits through the BB cup and tighten a nut on to it in the direction of undoing the cup so that you can tighten on the bolt until it grips the cup and undoes it.
A little gentle heat with a decorators heat gun around the frame BB helps too.