1960's Frejus - what tubing?

Recently acquired a 1960's vintage Frejus Tour de France frameset, and was
wondering what flavor tubing it was built with. There appear to be some
ridges (splines?) visible in the seat tube, but my (limited) research
reveals that SLX didn't appear until the 1980's. Another clue, if I'm
reading my calipers correctly, is that the seat tube I.D. is around 25.6mm,
and the O.D. is the standard 28.6mm. Of course, it may not be Columbus at
all; maybe Falck or Oria? Anyone have an idea on this?

-JJ

Jeff wrote:
Recently acquired a 1960's vintage Frejus Tour de France frameset, and was
wondering what flavor tubing it was built with. There appear to be some
ridges (splines?) visible in the seat tube, but my (limited) research
reveals that SLX didn't appear until the 1980's. Another clue, if I'm
reading my calipers correctly, is that the seat tube I.D. is around 25.6mm,
and the O.D. is the standard 28.6mm. Of course, it may not be Columbus at
all; maybe Falck or Oria? Anyone have an idea on this?

IIRC there weren't any 25.6 ID tubes until the 1980s, more
probably 25.4 for mild steel tube. And likely seamed at
that. Bare frame weight? Plain steel runs 3kg+

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

On Wed, 1 Apr 2009 21:33:37 -0600, Jeff wrote:

Recently acquired a 1960's vintage Frejus Tour de France frameset, and was
wondering what flavor tubing it was built with. There appear to be some
ridges (splines?) visible in the seat tube, but my (limited) research
reveals that SLX didn't appear until the 1980's. Another clue, if I'm
reading my calipers correctly, is that the seat tube I.D. is around 25.6mm,
and the O.D. is the standard 28.6mm. Of course, it may not be Columbus at
all; maybe Falck or Oria? Anyone have an idea on this?


Pull the forks, look on the steerer tube. If it's 531 that'll be stamped.
If the steerer is 531 then it's a good bet the rest is as well.

Might also compare your to the list he

http://www.classicrendezvous.com/Ita...al_numbers.htm