Re: [CR]Another "odd" lightweight frame design.......

(Example: Framebuilders:Bernard Carré)

To: bob.reid1@virgin.net
Cc: classicrendezvous@bikelist.org
Date: Sun, 11 Aug 2002 09:59:48 -0400
Subject: Re: [CR]Another "odd" lightweight frame design.......
From: "Richard M Sachs" <richardsachs@juno.com>


my reply... if i bought into that, i could see it as a possibility in the areas that 'traditionally get heated and joined, (tubes ends, etcetera). but... from the picture, i don't think that the mill would have done anything extraordinary to the seat stay or seat tube areas onto which the struts were added. it's a nice touch. considering the age of the frame, the feature could be seen as an innovation of sorts. but i still think that the joining process, particularly in the area that is shown, can do more harm than the perceived benefits would suggest. e-RICHIE

Richard Sachs Cycles No.9, North Main Street Chester, CT 06412 USA http://www.richardsachs.com Tel. 860.526.2059 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bob Reid <bob.reid1@virgin.net> writes: *Richard wrote, *** i would assume that the gain in stiffness by 'butressing' *** the seat stays would be negated by the shear act of ****adding these small struts. the heat involved in the brazing ****operation will certainly not help the area onto which ****these add-ons were, well, added.
> How does that square with the tube manufacturers at the time who
> were
> balatantly advertising the changes in the metals micro structure
> when the
> frames were brazed up giving increased / improved strength around
> the heated
> zone ?. This was one of their more popular sales pitches.
> Bob Reid
> Stonehaven
> Scotland