Re: [CR] Inventment cast one piece headtube and lugs

References: <435884.71607.qm@web161206.mail.bf1.yahoo.com> <4D3E2FB5.9020706@ody.ca> <a06240801c963e9fc3cc3@[192.168.1.30]> <4D3EC6BB.5080901@os2.dhs.org>
To: john@os2.dhs.org, classicrendezvous@bikelist.org
Date: Tue, 25 Jan 2011 11:32:53 -0500
In-Reply-To: <4D3EC6BB.5080901@os2.dhs.org>
From: <oroboyz@aol.com>
Subject: Re: [CR] Inventment cast one piece headtube and lugs

John wrote: "but in the mid-80s Trek started using an investment cast one-piece head tube. This was much stronger than the bulge-formed head tube, but much heavier as well. The investment cast head tube can be identified by the "TREK" name cast into the pseudo-lug:

http://pbl.gatech.edu/people/cforest/hobbies_cycling/Trek520/trek520_head_tube_bottomlug.JPG " John, were not these bits initiated or designed by Tim Isaacs? As with that seat lug design with the low, integrated binder in line with the seat stays? These aesthetically resemble his later Match Paramount stay treatment.

You can kinda sorta see the Paramount version here:

http://www.cyclofiend.com/cc/images/cc100-4IMG_0745.jpg

FYI, here is what Tim Isaacs is doing now:

http://matchtechnical.com

Dale Brown Greensboro, North Carolina USA

-----Original Message----- From: John Thompson <johndthompson@gmail.com> To: classicrendezvous@bikelist.org Sent: Tue, Jan 25, 2011 7:48 am Subject: Re: [CR] Inventment cast one piece headtube and lugs

One-piece "bulge-formed" head tubes were used by Trek and many other companies, but in the mid-80s Trek started using an investment cast one-piece head tube. This was much stronger than the bulge-formed head tube, but much heavier as well. The investment cast head tube can be identified by the "TREK" name cast into the pseudo-lug:

http://pbl.gatech.edu/people/cforest/hobbies_cycling/Trek520/trek520_head_tube_bottomlug.JPG

--

-John Thompson (john@os2.dhs.org)
Appleton WI USA