Model Railroading Fun

 No engine like this exists today. The W1 was an experimental locomotive with a water tube boiler instead of a fire tube boiler, and it operated at 450 Pounds Per Square Inch, and was a compound engine with four cylinders. I would love to see photos of the chassis without the boiler and see how that was set up. According to the writeup on YouTube, there is no audio recording of the W1, so the sound effects don't necessarily sound right. Compound engines have the same exhaust as simple engines, because the high pressure cylinders exhaust into the low pressure cylinders, and the low pressure cylinders exhaust into the stack. Pretty neat, Merle, I had not heard of this machine. Thank You for spotting!