Originally Posted by
dsaul
Does it make the sound when standing as well as sitting? The increasing number of pings sounds like a seatpost creak. I'd pull the seatpost, clean it, grease and re-install. It's amazing how every sound a bike makes sounds like its coming from the bottom bracket.
Yes, the sounds continue whether pedaling hard or lightly, standing or sitting -- not when coasting.
Thanks for the suggestions of crank arms and chain ring bolts.
I'll investigate those.