It might sound like European cat food, but the Kettenkrat was altogether weirder than that. Half motorcycle, half tank, the Sd.Kfz 2 Kettenkrat was designed by NSU, powered by Opel, weighed 1.5 tons, and could climb slopes of over 24°, even in sand.
A unique drive system delivered power to both tracks simultaneously on hard ground, or – when the driver selected – operated via a subtractor to skid-steer on soft ground, and it was used throughout the Second World War to lay cables, transport troops, tow aircraft, oh – and to invade Russia.
This amazing motorised Model Team recreation of the Sd.Kfz 2 Kettenkrad comes from previous bloggee Samolot, and not only does it feature the most terrifying LEGO figure we’ve ever seen, it also includes a fully working remote controlled version of the real bike/tank’s ingenious steering system.
Exactly how it works is beyond the collective minds housed here at TLCB Towers, so the best way to see if you can figure it out is via the video below. There are also more images of both Samolot’s model and the real 1940s contraption at Bricksafe, and you can read the full build description and join the discussion via the Eurobricks forum here.