Actually, The Ax posts came in at least 3 shapes that I've found so far.
The pic linked below shows from left to right a Columbus Air post, A dura aca AX, A Shimano 600AX of which I have the same shape in Dura ace, and another 600AX post.
None of the Ax posts I have fit columbus Air tubing. And the leftmost Ax one won't fit tange either. Maybe Reynolds Speedstream? but I don't have a speedstream frame to try it in. Of the two other profiles, I think the more pointed one is perhaps earlier. It fits one tange frame, but not another, where the oval ones fit all three of the tange frames I have.
Steve Birmingham Lowell,Ma USA
Date: Thu, 7 Dec 2006 12:23:10 EST From: ABB3330002@aol.com Message: 8
Actually Dura Ace AX only made one oval post ( two ovals show in their
catalog, one for Columbius aero tubing but as far as I know were never
produced.)
Alan Bernstein NYC