Originally Posted by
Grand Bois
Inner and outer 93 rings are different in that only the outers have the pin. The smallest outer I've seen is the 48 on my Peugeot.
You mean the screw-and-bushing assembly that's there to prevent the chain from getting stuck between the crankarm and the chainring if it somehow falls off to the outside? That's true enough. But I've never run anything but a pin-less 46 or 48 on the outside of my 93s, and haven't had a chain come off and get wedged yet. If one were really concerned about it, it would be easy enough to drill and tap such an inner-position chainring to accept a pin