Per my earlier post, you need the female threaded collar that came with all Simplex RDs which were installed direct to DO's. The collar slips into the Campy DO and the hanger bolt threads into the collar. If your derailleur doesn't have the collar you can perhaps salvage one from a trashed Simplex derailleur or maybe someone on the list has a spare.
Regards,
Jerry Moos
> Mes amis,
> I have a bike with Campy dropouts on which I'd like to use a Simplex
> rear derailleur; the Simplex has a removable "c-hook" for use, I
> presume, on bikes without a hanger; can I use a Campy threaded screw
> to attach it or are there other ways to do so? I'm not going to get
> out the Sawz-All....or the francofile:)
> Doug Wagner
> Richmond, KY