Re: [CR]Walter Serena= Serena bikes?

(Example: Framebuilding:Restoration)

Date: Fri, 25 Feb 2005 17:05:56 -0600
From: "John Thompson" <JohnThompson@new.rr.com>
Organization: The Crimson Permanent Assurance
To: Doug Fattic <fatticbicycles@qtm.net>
Subject: Re: [CR]Walter Serena= Serena bikes?
References: <BE450B09.3FB8%fatticbicycles@qtm.net>
In-Reply-To:
cc: classicrendezvous@bikelist.org

Doug Fattic wrote:
> Now we silver braze tubes together and the tubes don't get red or
> even any color at all. Much superior but maybe not as much fun as
> that giant flame thrower.

At Trek, I was fond of using a large heating tip for brazing -- you can get the whole joint evenly heated very quickly and as you say you can see the brass moving through the joint. You can even see it moving under the lugs as well, because the parts with brass under them are slightly cooler than the void areas -- it really helps in ensuring the joints are fully penetrated.

Since leaving Trek I haven't done this so much, mostly because the big heating tip works best with oxy-propane and now I use oxy-acetylene.

--

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