framebuilding

I want to build a frame. Lugged steel. Something unique. A commuter/citybike type thing. Transportation, not sport.

As a first step, I have been reading all I can about frame geometry, especially from people who make bikes for normal riding, rather than racing.

Here is a quick survey of bike geometries:

frame	HT (deg)	ST (deg)	CS (mm)	BB Drop (mm)	BB height (mm)
ANT Boston Roadster	72	73	480	80
Rivendell Atlantis	72	72	455	80
Matt Chester Utilitiman	72	72	432	~58	311
Surly Karate Monkey	72	73	431	68
Redline Monocog 29er	72	73	445	~64	305
Surly Crosscheck	72	73	425	66
Surly Pacer	73	73	415	72
IRO Rob Roy	73	73	425	65

I want relaxed angles, long chainstays and handlebars that are leve with the seat. Now to start designing something...