See this tubing chart for thicknesses & weights of various tubing types, including Columbus SL (two varieties) and Reynolds 531 (three varieties):
or tinyurl:
*<http://tinyurl.com/6s5yo> * Best,
David
David G. White Burlington, VT
Cheung, Doland wrote:
> Besides Jerry's points, I would think the best apples-to-apples weight
> comparison would be on unbuilt tubesets. I'm sure that the tubesets are
> close enough that all the variances in the lugs, fittings, dropouts,
> frame size, etc. could swing it either way.
>
> According to a Columbus tubing spec chart that I have, SL is spec'd at
> 1925g.
>
> Doland Cheung
> SoCal
>
> -----Original Message-----
> From: classicrendezvous-bounces@bikelist.org
> [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Jerome &
> Elizabeth Moos
> Sent: Wednesday, May 30, 2007 1:47 PM
> To: jeff-arg@bizwi.rr.com; classicrendezvous@bikelist.org
> Subject: Re: [CR]Reynolds 531 vs. Columbus SL
>
> I don't think one can really answer that, since 531 itself varied. In
> the 60's and 70's, Reynolds made both metric and English 531 tubesets,
> with different dimensions - pretty sure the metric gauge was lighter.
> They also drew custom tubing for bikes like Bates and issued special
> decals for Jack Taylor, Schwinn and Raleigh among other, which might
> have implied some customization of the tubesets themselves. Later,
> there were such variations as 531 SL, 531 Pro, 531c and 531 ST (Special
> Tourist). So to compare Columbus to 531 you have to say "which 531".
>
> Regards,
>
> Jerry Moos
> Big Spring, TX
>
> jeff-arg@bizwi.rr.com wrote:
> An friend of mine and I were talking about bikes last night and he
> asked, "wasn't the Columbus SL tubing allways lighter than Reynolds
> 531?" I couldn't give a definitive answer. My inclination was to agree.
> However, I have a digital scale that is on my bike stand and thought
> about some of the bare frames (sans forks) that I have weighed. The
> Colnagos built with SL are typically around 1900 grams but so are the
> Masi's built with 531. A Windsor I just bought made of SL is actually
> heavier than a Raysport I have made of 531.
>
> Does anyone know of standardized tubing weight measures between 531 and
> SL for comparison?
>
> Jeff Pyzyk
> Milwaukee, WI