Joined: Sep 2011
Posts: 509
Likes: 956
From: Redwood City CA
Bikes: 57ExpressWerke,58Cinelli B,60Folli,62Cinelli B Altenburger, 75Eisentraut A, 75Witcomb, 76Masi, 76Sekai Pro,77Colin Laing, 78Ritchey, 79Fattic, 80J.Taylor, 82Appel, 82Davidson, 83Della Santa, 86Allez Merz, 04P. Johnson, 91Litton, 11Bianchi, 23Open UP
Quote from the 1980-81 Catalog
"Geometry varies with frame size with the 57cm frame being 74 degrees parallel. Smaller frames have a slightly shallower head angle and steeper seat tube angle, while opposite is true of larger frame. This allows the top tube to be slightly shorter than the seat tube which give the best fit for most riders."