Best of BrickNerd - Article originally published September 20, 2022. Sorry, what? Köfii? A typo? No, let me explain... A Köf II is a German locomotive; Kleinlok (small locomotive), Öl-Motor (diesel engine) Flüssigkeitsgetriebe (hydraulic drive), Leistungsgruppe II (performance class 2). Between 1933 and 1965, more than 1,000 of these little workhorses were built—and you can still find them in private yards and museum railways. Twelve years ago I saw a photo of a LEGO Köf II built by Markus Wagner. He had managed to put a battery box, IR receiver and train motor in this tiny little loco. An updated version even had lights! Power Functions Köf II by Markus Wagner I was well impressed and decided to build my own version in red. At the time I was quite happy with it, but 11 years later it looks a bit dated and could do with an upgrade… But now, let’s...

