Re: [CR]Internal expander seatposts ??

Example: Framebuilders

Date: Tue, 20 Apr 2004 12:00:59 -0700 (PDT)
From: Fred Rafael Rednor <>
Subject: Re: [CR]Internal expander seatposts ??
To: Martin Needleman <>
In-Reply-To: <>

     I recommend you get in touch with Mel Pinto Imports in Falls Church, Virginia or have your LBS contact them. In fact, it might actually be quicker to call the Bicycle Pro Shop in Georgetown (Washington, D.C.) since it is associated with Mel Pinto. Anyway, they carried those seat posts in 1986 and beforehand during the CR time line as well. I can't imagine that there was much demand for those things, although Peugeot used them on some models in the late '70s and/or early '80s.
     By the way, I remember seeing these posts in both aluminum and a black plastic that seemed to be (at least in my recollection) the same Delrin that was used in the plastic Simplex derailleurs.
      Best regards,
      Fred Rednor - Arlington, Virginia
> I'm looking at a fluted French made ATAX expander type alloy
> seatpost.
> Size is 26.4mm. Also marked 01_1986 and so, apparently, off
> topic.
> Certainly not Singer and not Herse.
> Martin Needleman
> Annapolis, MD
> Donald Gillies wrote:
> > My modern (1998 TREK 2300) superbike just split its
> aluminum seat lug
> > at the base of one of the lug ears, and the frameset is
> ruined. I
> > have held a funeral and am sending it to that great
> crematorium in
> > wisconsin for recincarnation as a completely different
> frameset from
> > the bike gods at TREK.
> >
> > This got me thinking about internal expander seatposts.
> Jan Heine
> > tells me that expander seatposts are an "Alex Singer"
> exclusive
> > feature. Is this really true ?? Did any other maker
> ever sell
> > expander seatposts ?? By this I mean a seatpost that
> operates upon
> > the same principles as a quill stem.
> >
> > Alas, my bike was 3 tubes carbon and so an expander would
> probably
> > split open the carbon tubes and would therefore not solve
> my problem.
> >
> > - Don Gillies
> > San Diego, CA