Re: [CR]British bike building techniques


Example: Production Builders:LeJeune

From: "Takao Noda" <tanoda@d1.dion.ne.jp>
To: "Classic Bike List" <classicrendezvous@bikelist.org>
References: <27.15c4bf0f.283a7649@aol.com>
Subject: Re: [CR]British bike building techniques
Date: Mon, 21 May 2001 23:40:43 +0900


On an article about the Cinelli type B that was first imported into Japan in 1958 , a Japanese famous framebuilder asserted that it was made with a torch and a hearth. He recognized that the large area of tubes were filed to remove the scale. He wrote Cinelli used torch and hearth till 1967-8 .
                          Takao Noda
                  Hachioji, Tokyo, Japan


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Sent: Monday, May 21, 2001 10:46 PM
Subject: [CR]British bike building techniques



> In a message dated 5/21/01 5:29:23 AM Eastern Daylight Time,
> bob.reid@btconnect.com writes:
>
> << Know your breed - see this article >>
>
> Thanks Bob for that scan...
>
> That is a neat albeit cursory report of the basics of British bike building
> of a bygone era..
>
> Interesting in a few areas; odd that they mention that specialty bikes use
> bronze and silver to allow a lower temperature.. apparently unaware that
> bronze and brass are the same and use the same temperature range. I wonder
> if and when the silver joining compound was used, was the open hearth method
> was utilized? Seems hard to imagine silver (if a decent percentage of actual
> silver) could be controlled in such a method. But no mention of hand held
> torches. Certainly some builders of the immediate post-war era advertised
> that they used silver; Harry Ferris comes to mind in the 1950s and Stan Pike
> later were known to use silver on their frames.
>
> That also raises the question in my mind if anyone still uses the open hearth
> "coal gas" method? Is it correct tom assume that the open hearth method was
> used by larger concerns doing higher production, and that the small, one man
> or so shops used hand held torchs? I have heard that Mercian is the last
> practitioner of the open hearth approach. Anyone know if that is still the
> case?
>
> And while we are wondering, I hear no mention of earlier Italian frame makers
> using the open hearth method. The Custom Bike book tends to categorize some
> of the builders interviewed as to methods and as I recall only British
> builders are identified as using the open hearth....
>
> Dale Brown
> <A HREF="http://www.classicrendezvous.com/main.htm">Classic Rendezvous</A>