In a message dated 3/18/2003 8:13:32 AM Eastern Standard Time,
sachs@erols.com writes:
>
>
> Mark Bulgier wrote, as an aside on his free PX-10, that it has
> <snip> "Simplex dropouts not threaded for derailleur
> (so Simplex rears only unless you want to modify it)."
>
> Some one long ago showed me that careful use of a plumber's tapered tap
> (1/4" ??) works well enough for this application (although I since bought a
> proper 10 mm tap). Pitch is close enough, given that only about 2 - 3
> threads are engaged, but you have to be careful not to enlarge the hole too
> much. A Dremel or similar tool works to hack the dropout and leave the lip
> for the Campy/Shimano/everyone else stop.
>
> Obviously, one doensn't do this kind of brutal aggression on a Singer,
> Herse, or other work of beauty, but my conscience is clean wrt PX-10s in
> poor condition.
>
> harvey "scrounge" sachs
> mcLean va
>
We used a file for the outer lip and the 10mm tap for the innards. We first stoned or sandpapered the chrome to keep from screwing up files. It was a $20 job and did so many that I knew exactly how to 'profile' the tab.
Larry Black
Mt Airy, Md.