Originally Posted by
79pmooney
... I think you can just turn outside rings around and use them on the inside (but I haven't tried it). Seems to me I would have heard it wasn't possible in my days when the 52-42 crankset was the gold standard and I was hanging out with some very innovative mechanics, one of whom has since achieved some fame as the man to go to with questions like this. ... Ben
Yes, Sugino's 144mm rings were symmetrical and could be used in either position. I have also made close-ratio triples, such as 54-50-47 for a Bikecology customer and 49-46-43 for myself, using long stackbolts.
However, our thread starter wants something smaller than 42T. The only other option, of course, is to go larger in back, presumably with a new derailleur cage or entire rear derailleur.
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Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
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Schwinn: 1988 Project KOM-10, S/N F804069