Originally Posted by
numbernine
It seems as though I would have to move the clamp about a centimeter up the tube to clear the lug points. But if I did this, the FD guide would have to be dramatically bent to make it around the seat tube. Is this why you say it's the wrong guide?
It's from 1966 but the FD/RD are early 70s if I recall.
OK, that's why then. Early Campy record front derailleurs used a cable stop. I believe they were like this until 1967, though that may be off slightly.
In 1966 they would have used a derailleur like this:
And a cable stop like this, with a piece of housing going to the front derailleur:
If you want to be super accurate, that's the way to do it. Might cost you a bit though. You could also try a Huret guide, as IIR they don't clamp as close to the BB shell, and it wouldn't look out of place at all. There are other older derailleurs from the 60s and 70s that also had housing going to a stop rather than a free cable in space.
Normally I would agree with the cheap and cheerful solution of bending the guide, but I don't think you have enough room in this case.