Originally Posted by
big chainring
I just got a 1977 Schwinn Superior. ... The frame is a 24" by Schwinn measure which is to the top of the seat collar. But its 23" to the top of the top tiube. I usually ride a 23 1/2 or 60cm frame. The Superior has a somewhat unique measure. I've also noticed the bottom bracket is fairly low as well. Havent ridden it yet but am looking forward to checking out the somewhat smaller frame than I usually ride. ...
Irrespective of Schwinn's marketing hype, that is a 23" (C-T) or 22.5" (C-C) frame. My Capos use a similar tall seat collar system, and I always consider them 55s, rather than 56s.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
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
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069