Other common (but strangely unbelievable) causes of regular (rhythmic) clicking I have diagnosed and solved (ALL purportedly coming 'from crank or BB' when reported by riders):
1) fit of bars in stem, fixed by light greasing before re-tightening (tightly).
2) quill stem in fork, same fix!
3) seat rails in seat clamp, same fix!!
4) finally, a loose front skewer - HTFU
In all these cases, the clicking was synchronous with pedalling cadence because of the shift in weight or pull on bars during pedal stroke, and these noises seem to travel oddly around the bike.
Moral of the story is don't rule out the least obvious causes of funny noises.
Other common (but strangely unbelievable) causes of regular (rhythmic) clicking I have diagnosed and solved (ALL purportedly coming 'from crank or BB' when reported by riders):
1) fit of bars in stem, fixed by light greasing before re-tightening (tightly).
2) quill stem in fork, same fix!
3) seat rails in seat clamp, same fix!!
4) finally, a loose front skewer - HTFU
In all these cases, the clicking was synchronous with pedalling cadence because of the shift in weight or pull on bars during pedal stroke, and these noises seem to travel oddly around the bike.
Moral of the story is don't rule out the least obvious causes of funny noises.