Re: [CR] How is a seatpost shim held into the Seat Tube?

(Example: Framebuilding:Technology)

In-Reply-To: <75d04b480612130025s21b21074u8292f3c8d0808a70@mail.gmail.com>
References: <8279-457FB58D-19137@storefull-3272.bay.webtv.net>
From: "Chuck Schmidt" <chuckschmidt@earthlink.net>
Subject: Re: [CR] How is a seatpost shim held into the Seat Tube?
Date: Wed, 13 Dec 2006 00:42:54 -0800
To: CR RENDEZVOUS <classicrendezvous@bikelist.org>


Kurt Sperry wrote:
> That reminds me, how do those old '50s frames with the collar-type
> seat
> binder secure the collar to the frame so one doesn't lift the seat/
> post out
> if for example lifting the bike by the seat as I frequently do?

The seat tube inside the seat lug extends up inside the collar so that the collar tightens seat tube against the seat post. The collar works just like the ears on the seat lug. Nothing is loose...

Chuck Schmidt
South Pasadena, Southern California
United States of America
http://www.velo-retro.com (reprints, t-shirts & timelines)