Originally Posted by skanking biker
nother dumb one here: is 110 bcd a common chainring size?
Yes. Simple (and not dumb) question, simple answer. It is the standard for "compact doubles" and was for all five-bolt MTB chainwheel sets up until just a few years ago. There are tons of 110 or 110/74 cransksets out there, so chainring availability should be just fine for the foreseeable future.