Hi! This is my first attempt at a Lego MOC for at least 13 years. I am glad the "dark ages" are behind me. This model is based on the BR50 steam locomotive and wagon that are at the train museum in Blumberg/Zollhaus near the Black Forrest in Germany. I have included a picture of the original below. The model is powered by two Power Functions M size motors which are in the boiler. The final result is great, but getting these to fit properly and braced well enough to handle the torque was a real struggle. If your tender is big enough, you might want to put them in there instead. The "Wannentender" or "bathtub" tender as this design is referred to, houses the rechargeable LEGO battery box and IR receiver which you can see sticking out from under the coals. Because of the tenders design it wasn't big enough for the motors, which is why I ended up putting them in the boiler. This model will actually be played with by children so I didn't go overboard with the detailing. The focus was more on durability and playability. I hope you like it! I would be grateful for your comments and ratings. Thanks!