A lot of cheaper derailleurs were held on with a mount plate that was kept in place by the rear axle nut or skewer. Some of these were removable so any better standard derailleur would thread on it. Find one of those and you're good to go.
One pictured here:
http://www.bikeparts.com/search_results ... =BPC109497
The little bolt pictured keeps it at the proper angle and in place when the wheel is removed. I'd drill and tap the dropout and thread the bolt in.
One pictured here:
http://www.bikeparts.com/search_results ... =BPC109497
The little bolt pictured keeps it at the proper angle and in place when the wheel is removed. I'd drill and tap the dropout and thread the bolt in.
