[CR] R O Harrison Track frame seat tube sizing

(Example: Events:Cirque du Cyclisme:2007)

Content-class: urn:content-classes:message
Date: Tue, 18 May 2010 09:17:43 -0500
Thread-Topic: [CR] R O Harrison Track frame seat tube sizing
Thread-Index: Acr2lOH/9z8qul9FT9CGD7NUNyPJ8A==
From: "John Hurley" <JHurley@jdabrams.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR] R O Harrison Track frame seat tube sizing


Try measuring the opening with internal calipers at several different orientations, to see if it is out of round. The seatpost binding and gouged on one side only is a dead giveaway too, of an out of round condition or a burr or bump of some kind in there. If so, you may be able to reshape it by wedging as I have done and described in the archives, or by spreading the ears or by honing, or some combination of these.

John Hurley Austin, Texas, USA

Original Message:

I have a nice 1960 (?) R O Harrison track bike Reynolds 531 and Nervex Pro Lugs, not drilled for brakes and has metal head badge. Very nice bike.

Unfortunately, I cannot for the life of me determine the correct seat post size.

The sizing rod is in as far as I can push it and says 26.8.

I put the 26.8 Campy seat post in and get movement.

Do I need to shim this?

Anybody know for certain what size it is.

I know seat post sizing can be tricky sometimes, but I've never had a problem before.

Thanks for any help,

Kevin McCaul