Broken rear derailleur hanger on a steel frame, repair?
I've recently heard of two decent quality older steel frames with a broken rear dropout or derailleur hanger broken off. Is this fixable? If so how should it be fixed and what would be a reasonable cost?
I'm assuming the damaged dropout would have to be cut off and a new one welded or brazed into place (obviously I'm no welder and dont plan to do this myself).