From 1919 to 1962, the Chicago, Milwaukee, St. Paul and Pacific Railroad (known as the Milwaukee Road) had these five General Electric-made behemoths pulling trains under the wires from Chicago to Seattle. They were called the Bipolar's for each of the locomotive's 12 motors had only two field poles, mounted directly to the locomotive frame beside the axle. The motor armature was mounted directly on the axle, providing an entirely gear-less design.
These locos were so powerful they could out-pull modern steam locos, and what used to take two steamers took just one bipolar. However, after a disastrous 1953 rebuilding by the railroad's company shops (who had no clue how to work on a electric loco) the engines were prone to failures and even fire. And so, in 1962, four of them were scrapped with the lone survivor, numbered E-2, towed to the Museum of Transportation in St. Louis Missouri, where it has sat silent even since.
This model was inspired by a 1999 version of the engine built by user legosteveb. I recreated the actual orange, red and black color scheme used on the loco when it emerged from that 1953 modernization program, but it was too expensive. So, after looking around I decided to use the paint scheme the Milwaukee Road used when the engine was donated. This yellow and red scheme was inspired by the Union Pacific and was adopted very late in the engine's career (mid-50's).
The loco is split in three sections as per the original engine. The front and rear section can pivot slightly to make the engine go around curves. Since the last uploading of this model, the wheels have been re-arranged into six groups of two (they are joined in the middle to the frame) and the body of the engine extended to match the wheels.
Side view of the locomotive. The number board in front (and rear) should say "E2" in printed 1 x 1 tiles.
Photo from Wikipedia (NOT mine!) of the last remaining Bi-Polar electric locomotive in St. Louis, Missouri, E-2. Those who are eagle-eyed will notice the real model has two more wheels than the LEGO version.