[CR]Re: Classicrendezvous Digest, Vol 31, Issue 3


Example: Books:Ron Kitching
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To: classicrendezvous@bikelist.org
Date: Sun, 03 Jul 2005 16:34:35 +0000
Subject: [CR]Re: Classicrendezvous Digest, Vol 31, Issue 3

Date: Fri, 1 Jul 2005 13:18:04 -0400 From: "Bingham, Wayne" <WBINGHAM@imf.org> To: <classicrendezvous@bikelist.org> Subject: RE: [CR] 753 vs 531 Message-ID: <D24CD8D2A42DBE408E31D99568D7AAFF03DFD7A6@MLSSWN02P.WAS.INT.IMF.ORG> Content-Type: text/plain;charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: list Message: 5

Greg Parker wrote:
>>>2) Seat post diameter - 753 tubing came in Metric diameters only, AFAIK, so the seat posts required were generally 26.8 mm (sometimes 27.0) vs. 27.2 mm for 531. (Athough very heavy-gauge 531 frames sometimes used 26.8 posts, but the weight difference would be even greater for one of those vs. 753)<<<

I have three frames built with 753 tubing; '89 Merckx Grand Prix, '85 Raleigh Team USA, and '84 custom Trek track frame. Only the Raleigh sports a 753R sticker. Both the Raleigh and the Trek are currently built up with Campy components, the Merckx is not built up, but was my primary ride for many years (and many miles), and I used a Cd'A post. All are currently in storage due to my shop construction project, so I can't go do an in-depth analysis, but I'm pretty confident that all use 27.2 seat posts.

How does that fit into the 753 puzzle?

Wayne Bingham Lovettsville VA ------------------------------

You have the later stuff. Reynlds, in their infinite wisdom, chose to drop the "R" desigation at some point.

So........ Early 753 is Metric diameter. 753R is Imperial diameter. Late 753 is also Imperial diameter. Simple, no? :-)

Greg Parker
Mad-town, Wisconsin