Chainrings for 144 BCD?
The bike is an '84 Raleigh Super Course. The crank is stamped with the Raleigh logo. The existing BCD for that crank is 144 mm. The existing chain rings are 52 x 42. I'd like to change these to something a bit more hill-friendly if I can; a 50 x 34 or even a 53 x 39. But the commonly available chain rings seem to come only in 110 BCD or 130 BCD. Is there a good source out there for 144 BCD chain rings? Thanks in advance. DB