Why and when did tubing manufacturers settle on non-metric sized outside diameters? For example- 1" or 25.4mm, 1 1/8" or 28.6mm, 1 1/4" or 31.8mm. Given that most of the tubes were or are manufactured outside of the U.S. why not pick a round number like 25mm, 29mm and 32mm? I know that the French and Davidson had their own non-standard diameters but most of the frames/bikes that we seem to be interested in on this list use 1", 1 1/8" and 1 1/4" diameter tubes. I don't think there's anything wrong with this just think it's historically odd. Any ideas?
Curt Goodrich Minneapolis, MN
-------------------------------------------
Introducing NetZero Long Distance
Unlimited Long Distance only $29.95/ month!
Sign Up Today! http://www.netzerolongdistance.com