I dont know a whole lot about headsets, but I ought to replace my broken Tange MA-60 before I ride my bike again. It's been wonky since before my crash, and now its teeth wont mesh and it comes loose on its own. I just did a century between San Luis Obispo and Santa Barbara, retightening the part with the grip by hand every half hour while riding.
I just want to learn about their history, mechanics and types. I will probably be trying to replace it with something else vintage but better designed.