Kurt Sperry wrote:
> Most cranks are at or near the limit constrained by the BCD
> on the inner ring, so for most on topic bikes the only way to broaden
> the range down low is to use larger freewheel cogs.
That's exactly why a 40.5" bottom gear is the limit with the Nuovo Record
with a 42T small ring and 28T big cog. I have heard of a 41T small ring for
the 144mm BCD, but haven't seen one.