I am a stickler for scale models and I love comparison pictures between the model and a photograph or a line drawing of the real thing. It will come as no surprise then that the beautiful BR 55 steam locomotive by Ronald Vallenduuk (Duq) caught my attention.
The comparison shows that the proportions are spot on. I also had the fortune of seeing this black beauty and its many details with my own two eyes at a Lowlug meeting last weekend. Since photographing a black model is not easy, the details are a bit more difficult to see in photographs, but I can recommend looking at the flickr set. The locomotive is powered by a Power Functions L-motor carefully hidden in the firebox, with a battery box and IR receiver in the tender. The locomotive is 8 studs wide, which may be bigger than many LEGO train lovers like, but it can navigate normal LEGO train curves without any difficulty.
As an interesting side-note, the connecting rods are custom pieces made by Benn Coifman from Railbricks. The surface finish of the parts suggest that they were 3D-printed, as they are not completely smooth, but the fit is impressive.