Lou, thanks for the chart.
If you view it in plain text, all you need to do to make the columns line up is to delete some extra spaces from between the seat tube angle numbers
"Steve" (a.k.a. Questor, sorry I forget your last name) wrote:
> Track, Criterium, and Road frames use different angles and frame
> tube lengths... what frame type does the table below represent
> since I don't build frames and know what they are?
The chart works the same for all types.
Each type you mention vary widely within its type, with a lot of overlap between the types, so you can't say (for example) a particular track frame is steeper than a particular road frame, without measuring.
I would suggest changing to the definitions for the chart slightly. Instead of:
Seat tube angle is the angle between the seat tube and top tube.
Setback is the distance the seat tube is behind the bottom bracket, measured along the top tube.
I would say:
Seat tube angle is the angle between the seat tube and the ground.
Setback is the distance the seat tube is behind the bottom bracket, measured parallel to the ground.
This makes the definition universally correct, not just correct for the case where the top tube is horizontal.
One more suggestion, as far as making another frame fit the same as one you know you like, it'd be better to measure the setback at the saddle, rather than at the top of the seat tube. Then you'd get the same saddle position no matter what the frame size is, and could possibly even adjust for a wrong seat tube angle by adjusting the saddle fore-aft in the seatpost.
Mark Bulgier
Seattle, Wa
USA