[CR]tubing diameters

(Example: Racing:Wayne Stetina)

From: "goodrichbikes" <goodrichbikes@netzero.net>
To: <classicrendezvous@bikelist.org>
Date: Mon, 12 Aug 2002 12:17:06 -0500
Subject: [CR]tubing diameters

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

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