All,

Could you post frame geometry information for your bikes? Links to catalog scans would also be greatly appreciated.

The information I need are:
Manufacturer, Model, Frame Size (seat tube length), Head Angle, Seat Tube Angle, Fork Offset (rake), Chainstay Length.

Information that would be nice to have are:
(Effective) Top Tube Length, Bottom Bracket Drop, Wheelbase.

My strong preferance is for data from 56 or 58 cm frames.

I'm compiling a database (OK, its a spreadsheet) of vintage and current bike geometries. My interest here is a) to archive as many as possible in a central location and b) to look for groupings of tried and true classic designs.
The spreadsheet is available for download here:
http://home.comcast.net/~pinnah/dirt...kes/bikes.html

For those who are interested in such things, I can see several groupings in the geometry data. Arguably there are 2 more that could be called out...



Modern Road Racing Bikes
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Chainstays approximately 41.0 cm
Head Angle approximately 73.5 degrees
Fork Offset approximately 4.3 cm

Classic Road Racing Bikes
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Chainstays less than 41.5 cm
Head Angle approximately 73.0 degrees
Fork Offset approximately 4.5 cm


Event/Audux/Century Bikes
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Chainstays approximately 42.5 cm
Head Angle approximately 73.0 degrees
Fork Offset approximately 4.5 cm


Modern Sport Touring Bikes
-----------------------------------
Chainstays between 43 cm and 44.5 cm
Head Angle approximately 73.0 degrees
Fork Offset approximately 4.5 cm


Classic Sport Touring Bikes (My Favorite)
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Chainstays between 43 cm and 44.5 cm
Head Angle approximately 73.0 degrees
Fork Offset approximately 5.5 cm


Loaded Touring Bikes
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Chainstays greater than 45 cm
Head Angle approximately 72.5 degrees
Fork Offset approximately 5.2 cm