This is my first attempt at double-heading American Flyer Steam Locomotives. It was a bigger undertaking than I thought it would be. I ended up using brass flat stock to make the pull bar and arm assembly with American Flyer knuckle couplers. This is a short video I took of the 4-8-4’s. Will do a longer video with two hundred cars when I get that many!
The second engine I replace the “Lionel/Flyer” smoke unit with the AF smoke unit. You can see a big difference at slower speeds.
This is a close up of the front pilot as to how much work went into removing material to get the right amount of swing on the arm assembly. This was a trial and error situation at first, just to get things to work right. Take things slow and pay attention to what your removing.