Several hours of work and endless hours of reading allowed me to construct this steam locomotive for display. This is a 4-8-4 Northern Class steam locomotive (4-8-4 is a Whyte notation for wheel arrangements; 4 leading wheels, 8 driving wheels, 4 trailing wheels.) The locomotives were well suited for passenger service, and there are other 4-8-4s still running such as the Daylight Southern #4449 and Union Pacific’s #844.
The train is over 280 props large, anything that could be parented is, and it does run. The train can only run on Gm_Trainconstruct2 as it derails on the ridiculously tight turns on any other map. It is thruster powered (no need at all to make this more complicated than it is.) The driving pistons move, and the train is capable of some speed. If I had larger train wheels I could make this even faster.