on taped Bb you actually have four positions the cranks can mate up with the BB - north west south east - you might try taking cranks off and repositioning - when mine did it it was much more prominent upon change of acclearation - ie' slwoing after accelerating or accelerating after slowing (assuming you're using the legs to brake here) - this told me it was small movements of the crank around the taper - or loose chainring bolts.
it was a ticking noise - when i tightened crank beofre the grease it gave the very same tick - the kind of metal against metal ("i'm tight now thanks you") noise you get when tightening the wheel nuts of car or a stem bolt etc. etc.
on taped Bb you actually have four positions the cranks can mate up with the BB - north west south east - you might try taking cranks off and repositioning - when mine did it it was much more prominent upon change of acclearation - ie' slwoing after accelerating or accelerating after slowing (assuming you're using the legs to brake here) - this told me it was small movements of the crank around the taper - or loose chainring bolts.
it was a ticking noise - when i tightened crank beofre the grease it gave the very same tick - the kind of metal against metal ("i'm tight now thanks you") noise you get when tightening the wheel nuts of car or a stem bolt etc. etc.