Joe Bender-Zanoni writes
>The Mighty Tour is a single piece forged crankset with 110 mm spacing. It
>came out around 1975 and can go as low as 34T.
TA makes a 33T 110 BCD ring which would work (presumably; I don't have first-hand experience so I'm just going by what I read).
Mark Bellevue, WA
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Mark J. Encarnación <mark@encarnacion.org>