Joined: Sep 2005
Posts: 3,003
Likes: 303
From: Hervey Bay, Qld, Australia.
Bikes: Colnago (82, 85, 89, 90, 91, 96, 03), 85 Cinelli, 90 Rossin, 83 Alan, 82 Bianchi, 78 Fountain, 2 x Pinarello, Malvern Star (37), Hillman (70's), 80's Beretto Lo-Pro Track, 80's Kenevans Lo-Pro, Columbus Max (95), DeGrandi (80's) Track.
I must commend you on a very informative and interesting set of drawings. They really do illustrate geometry changes over the 75 years. It was really interesting to see you kept the saddle / handlebar relationship as a constant.
The wheelbase and bottom bracket relationships do tell a developing story and it was informative to see the seat tube angle tightening then relaxing slightly.
The 1950 to 2009 rear wheel position did change significantly being much more tucked under the saddle while the 1930 wheelbase was quite extended.
Do you have these particular bikes at present? I would really like your impressions as to their ride qualities.
So well done. Congratulations,
Gary.