In a message dated 11/18/02 12:11:22 AM Pacific Standard Time, mark@bulgier.net writes:
<< I don't see how - the upper pivot grooved for the snapring could possibly be retrofitted to an old body (though I doubt it), but the other characteristic Ken mentions - how the aluminum base for the steel pivot protrudes forward more on the newer ones than on the old - that could not be changed. Nor could the housing stop be added to a newer body with the snapring pivot and protruding base - it's all one piece.
I took a snapshot of both kinds to illustrate; it's at:
http://bulgier.net/
The upper one in the pic has the flat pre-CPSC cage but the steel pivot pin is extended and grooved for the snapring. So I guess this dates it as between around '72 and '78 or so?
Fun Facts: The old one, about a '61 I think, has chrome-plated parallelogram
arms, and the body pivot pins, which are pressed-in steel on the newer one,
are aluminum on the old one. They are machined out of the same block of
metal as the body, not separate parts pressed in.
>>
My cablestop front derailleurs look like the lower one pictured by Mark, and
the upper picture resembles my post-CPSC lipped derailleurs. I'm working from
memory without the parts in front of me. Are we saying that a CPSC front body
has the cable stop on it? I'd want to examine that part with a magnifying
glass to see if someone welded on it. I find it hard to imagine that a 1979
fd body had a cable stop on it. Does a list member own this thing?
Stevan Thomas
Alameda, CA