Liebherr HS 843 This is a 60 tonne crane, completely self-built except for the tracks and slewing ring, which were bought from Damitz. The model is in the scale 1: 14.5 and made of brass and soft soldered. The crane is fully radio-controlled and operated by a ScaleArt transmitter, the Commander 5000, the electronics are from the Servonaut brand. The construction time is approximately 2880 hours