I've been riding in a 61.5 gear-inch
any combination that lets you arrive at that GI will do..
41:18? TA is a French company makes some odd and even tooth count chainrings.
144bcd is normally 42t or more.. but, I see : via Peter white cycles
144bcd
[TABLE="width: 600"]
[TR]
[TD="width: 145"]Specialites TA[/TD]
[TD="width: 355"]41 tooth for Super Record cranks:[/TD]
[TD="width: 86"]
$ 74.00
[/TD]
[/TR]
[/TABLE]
Track cranks are often 144 bcd
though a 42t would be more common, so cheaper.. then 144,135, 130 or 110 type would, almost, do..