So this would suggest that those little sidewall extensions do something to stiffen or otherwise strengthen the rim. That aside, I think the wall thickness throughout that little bitty box section is a bit thicker than on a conventional lightweight tubular. Even with the unsupported bead hook, my Open4's and Omega V's stand up to bumps better than GL's. Added bonus is that if they do dent you can often bend the bead hook back into place (more or less).
Tom
> Come to think of it, when you take a narrow light
> clincher rim, such as
> Mavic Reflex, and peel the beads off of it, there's
> probably less substance
> left than a tubular rim in the gl330/Arc en Ciel
> weight range.
> David Feldman
> ----- Original Message -----
> From: "Steve Freides" <steve@fridayscomputer.com>
> To: "Tom Dalton" <tom_s_dalton@yahoo.com>
> Cc: "sterling peters" <sterlingcapital@mail.com>;
> <classicrendezvous@bikelist.org>
> Sent: Wednesday, March 21, 2001 2:33 PM
> Subject: Re: [CR]Campy 36* 4x
>
>
> > What means "race rims" in this context? I do lots
> of everyday riding on
> > these and even lighter rims and they're quite
> durable, IMO.
> >
> > -S-
> >
> > Tom Dalton wrote:
> > >
> > > If the hubs have previously been built, you
> should try
> > > to use the pattern that was used before. It
> will be
> > > obvious based on the deformation to the flange.
> If
> > > the hubs are NOS, I'd go 3x. You're using
> GL330's
> > > which are race rims, and racing wheels should be
> 3X,
> > > especially if you want to be period correct.
> Why
> > > should racing wheels be three cross? I dunno,
> that's
> > > just the way it was done. looks cooler.
> Anyway, I
> > > can't answer your question about spoke head
> > > interference, but I'd discourage both mixing
> patterns
> > > on the hubs, and relegating any good NOS hubs to
> 4x
> > > service.
> > >
> > > Tom Dalton
> > > --- sterling peters <sterlingcapital@mail.com>
> wrote:
> > > > Has anyone had some experience building 4x 36
> hole
> > > > small flange hubs?
> > > > Specifically campy 36 hole 4x to Mavic gel
> 330. ?
> > > > Question? Have you run
> > > > into any problems with the spokes crossing
> over
> > > > spoke heads at the flange?
> > > > If so would you suggest I stick to 3x. Thanks,
> > > > Sterling P.S. I'd like to
> > > > know before I buy the spokes.
> > > >
> > > >
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