Just a thought for a the list, given the change in direction of the original post, it's a shame that no one changed the "Subject" as it's unlikely that anyone using the archives would look up "old saw" in order to read about that way to place a Simplex derailleur in a non Simplex drop out.
Many of us, myself included, should get better at insuring the subject line represents what is in the text body so that anyone making a reasonable attempt could find the info with an archive title search. The subject title is certainly the quickest way to know what should be in a current message too. I do realize the archive search can include the message info, but archive searching by title is generally quicker.
Eric Elman please take as constructive comment directed at no one in particular Somers, CT
> Reexamining my many Simplex derailleurs, I find that rather than the
female
> threaded collar, some have a male bolt that inserts from inside the DO and
> engages female threads in the upper pivot of the derailleur. In this case
> there is an unthreaded shoulder near the head of the bolt which fits the
> unthreaded Simplex or threaded Campy DO hole. The threaded part of the
bolt
> does not engage the threads of a Campy DO, only the smaller threads of the
> derailleur pivot. So, with either variation, a Simplex derailleur works
> equally well with Campy or Simplex DOs. You need to determine whether the
> upper pivot of your Simplex derailler has a bolt or female threads to
> determine whether you need the bolt or the collar to fit on the inside if
> the DO.