Re: [CR]650B? Rims

(Example: Framebuilders:Pino Morroni)

From: "M. Chandler" <cyclist@dimensional.com>
To: "Classic Rendezvous" <classicrendezvous@bikelist.org>
Subject: Re: [CR]650B? Rims
Date: Sat, 10 Mar 2001 11:15:29 -0700


>great effort. The rim is marked Araya RM-20, but has no size markings.
>I measure it about 570mm inside diameter and about 597mm OD to the tops
>of the flanges, but I don't think I can measure a built-up rim closely
>enough to tell the 3mm difference between 650B and 650D. It is an
>ominous sign that my most recent Sutherland's lists an Araya RM-20 among
>650D rims, but another Araya model as 650B. Can anyone confirm that the
>RM-20 was made in 650D only, or suggest a more foolproof method of

RM-20s and 25s were early "lightweight" mountainbike rims that were popular around 85-87. GT probably had them use the same dies for their 700D rims.

The 700D was GT's hope to differentiate their hybrids from other brands. They did that, but at the expense of compatibility.

--mc

--
Mark Chandler
cyclist@dimensional.com
http://www.dimensional.com/~cyclist