Re: [CR]27" and Tubular rims

(Example: Racing:Jacques Boyer)

From: "dddd" <dddd@pacbell.net>
To: "Classic Rendezvous" <classicrendezvous@bikelist.org>
References: <BAY109-F18FF320137F7993CD4C23C9C870@phx.gbl> <00c701c69430$66b8dc90$4001a8c0@compaq>
Subject: Re: [CR]27" and Tubular rims
Date: Mon, 19 Jun 2006 23:16:44 -0700
reply-type=response

Oops! I meant Birmalux rims, not Benelux.
> Could 1971 be near the first time that an extruded rim was produced for a
> bicycle?
> I could be quite wrong, but I can't recall any extruded doublewall rims,
> such as the 1320s, prior to this, with tubulars of that era being formed
> from aluminum tubing, and alloy clinchers, such as Benelux**, being
> apparently formed (in this case rather poorly) from aluminum strip.
> The Super Champ Model 58's are, with their twin-hollow extrusion, the
> earliest extruded rims that I'm familiar with, though Nisi Evian and
> others were common by the mid-1970's, and, wait a minute here, a second
> look at these 1972 Weinmann singlewall rims shows a welded seam but I
> can't really tell if it's extruded or formed from strip.
>
> David Snyder
> Just wondering in Auburn, CA