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

Example: Framebuilders:Chris Pauley

Date: Mon, 24 Jan 2011 15:16:20 -0800 (PST)
From: jim sikking <>
In-Reply-To: <>
Subject: Re: [CR] Inventment cast one piece headtube and lugs

Don, I also have '78 Trek TX 700 and I think the workmanship of these early frames is excellent. It's also a 22.5" frame with lots of tire clearance and a supple fork with plenty of rake. Makes for a great allrounder/randonneur bike suitable for dirt roads and a great way to get away from car traffic in Hill Country (no National Forests nearby).

Jim Sikking

--- On Mon, 1/24/11, donald gillies wrote:

> From: donald gillies <>

\r?\n> Subject: [CR] Inventment cast one piece headtube and lugs

\r?\n> To:

\r?\n> Date: Monday, January 24, 2011, 5:03 PM

\r?\n> A friend of mine in 1982 told me that

\r?\n> TREK was trying to be innovative

\r?\n> and save time in their frame manufacturing.  In 1985 I

\r?\n> bought a TREK

\r?\n> 500 bicycle which not only had the 1-piece I.C. headtube,

\r?\n> but also had

\r?\n> a pretty cool bottom bracket that routed the cable into the

\r?\n> bottom

\r?\n> bracket shell and then inside the right chain stay and out

\r?\n> of the

\r?\n> dropout plugs, through a cable, straight to the derailleur

\r?\n> - no

\r?\n> rusting for the last 30 inches of cable run, and no

\r?\n> needless friction

\r?\n> either!  Also those bikes had a cinelli-copy 1-piece

\r?\n> seat cluster, too!!


\r?\n> A few years ago I got a like-new 1984 TREK 510 for $150

\r?\n> with the full

\r?\n> victory gruppo and 501 tubing.  This bike had regular

\r?\n> (on topic,

\r?\n> prugnat-like) lugs on the head tube, but the workmanship

\r?\n> was the

\r?\n> finest I had ever seen on any frame of mine and they even

\r?\n> looked as if

\r?\n> they were profiled, as they had only about a 2mm shelf on

\r?\n> the seat and

\r?\n> down tubes.  The brazing on this lowly TREK outclassed

\r?\n> hand built

\r?\n> Schwinn Paramounts and Raleigh Team framesets of only a

\r?\n> decade

\r?\n> earlier.


\r?\n> Maybe the focus on automation is why TREK is still a going

\r?\n> concern and

\r?\n> both Schwinn and Raleigh have died at least twice since

\r?\n> 1984.  I

\r?\n> presume that the lugs were investment-cast and they were

\r?\n> probably

\r?\n> brazed with the automatic brazing machines (1983 according

\r?\n> to

\r?\n> that TREK was using for some of their

\r?\n> joints in

\r?\n> the mid 1980s.




\r?\n>   TREK went on to make a very early bonded aluminum

\r?\n> frame from Tru

\r?\n>   Temper (TREK 2000), and an 1987 an early (but not

\r?\n> earlier than ALAN

\r?\n>   or Vitus) bonded carbon frame (TREK

\r?\n> 2500/2300/2200/2100 series),

\r?\n>   before making the all-carbon frame 5000-series frame

\r?\n> in 1989.  The

\r?\n>   last year for the bonded 2000-series carbon frames

\r?\n> was 1998, and I

\r?\n>   owned a TREK 2300 (one of my sweetest rides ever)

\r?\n> from 2000-2004.

\r?\n>   The 2300 was rated as one of the most compliant

\r?\n> framesets in the

\r?\n>   Damian Rinard's frame deflection tests.







\r?\n> - Don Gillies

\r?\n> San Diego, cA, USA