Does anyone have or know where to get, short of custom machining, a gas cap for my 1917 Maxwell? It has an inside female thread and measures 1 5/8 x 18 threads per inch.
Howard, try Drills and cutters.com they show taps in this size for only $122.+. i purchased some #14x24 taps to clean up the starter ring on my 24.
Howard if you have a technical school in your area they will usually give that project to a senior for a project and all you pay for is the material