[CR]Vintage Racebike Geometry

The results so far... here's some of my bikes (anyone else care to contribute?)

1939 Bianchi #718923-0 (c to c) Seat Tube -- 54.0cm Top Tube -- 58.0cm BB drop -- 8.0cm Chain Stay -- 46.0cm Wheel base -- 110.0cm Seat Tube < -- 71.5° Head Tube < -- 70.0° Fork Rake -- 8.0cm Trail -- 4.0cm* *wheel dia. 68.5cm

1950 Bianchi Folgorissima #287197 (P-R derailleur) (c to c) Seat Tube -- 57.0cm Top Tube -- 57.0cm BB drop -- 8.2cm Chain Stay -- 45.0cm Wheel base -- 104.0cm Seat Tube < -- 73.00° Head Tube < -- 74.25° Fork Rake -- 6.0cm Trail -- 3.4cm* *wheel dia. 68.5cm

1960 Cinelli SC #7094 (c to c) Seat Tube -- 55.5cm Top Tube -- 56.0cm BB drop -- 8.0cm Chain Stay -- 42.5cm Wheel base -- 102.0cm Seat Tube < -- 73.0° Head Tube < -- 73.0° Fork Rake -- 5.5cm Trail -- 4.6cm* *wheel dia. 68.0cm

1963 Masi Special (c to c) Seat Tube -- 56.0cm Top Tube -- 56.0cm BB drop -- 8.0cm Chain Stay -- 44.0cm Wheel base -- 103.0cm Seat Tube < -- 73.5° Head Tube < -- 73.5° Fork Rake -- 5.5cm Trail -- 4.3cm* *wheel dia. 68.0cm

1980 Colnago Super (c to c) Seat Tube -- 55.5cm Top Tube -- 55.5cm BB drop -- 7.0cm Chain Stay -- 41.7cm Wheel base -- 100.0cm Seat Tube < -- 74.0° Head Tube < -- 74.0° Fork Rake -- 4.6cm Trail -- 4.9cm* *wheel dia. 67.5cm

Trail calculation http://www.kreuzotter.de/english/elenk.htm

Chuck Schmidt South Pasadena, Southern California

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