Let’s look at the clues, and then make a more accurate diagnosis,…..when it stalls, do you lose headlight?…everything that makes this Hudson run is inside the locomotive…….try to make the locomotive stall again, and observe what’s going on, ….loss of power could be dirty wheels, dirty pick up rollers, one or the other pick up roller open. As mentioned above by the masters, these locomotives are notorious for grease becoming like concrete, and pick up roller screws coming loose,….
Pat
