Joined: Jan 2008
Posts: 23,645
Likes: 1,109
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
Go with a claw type derailleur and just about anything will work. Otherwise, you will need a Simplex derailleur, which show up pretty often on ebay. You lost me at non-threaded dropout.