Originally Posted by
jonwvara
Yes, and would that all vintage French bikes come with them, so the owner could use any derailleur without resorting to any of the various work-arounds necessitated by the integral-Simplex-hanger versions.
Fair enough especially since quality simplex rear derailleurs are getting harder to find (and as you point out in your website there are other derailleurs that can work without a stop if you thread it). But the later stronglight drop outs were threaded and had a stop so you could run pretty much anything you want on them.
