PDF instructions for building  the well-known "DR BR 52" of the "Deutsche Reichsbahn". More than 7000 examples of this tank locomotive have been built since 1942. It is often referred to as the "war locomotive" because it was specially developed for the war conditions and the associated scarcity of raw materials. Even after the war, these locomotives were in use for a long time, spread all over Europe. It was retired from Deutsche Bahn in 1962.
 
The finished model can be driven with two Power-Functions L-motors. Both the motors and the infrared receiver are installed in the boiler. The battery box can be found in the tub tender. The locomotive consists of approx. 1223 individual parts and is approx. 64 studs long. The model has some details, such as the chassis, the structure on the boiler or the distinctive tub tender.
 
The gearbox has been optimized in the latest version 21.02. The friction in the drive train has been significantly reduced. Both motors are now directly connected, the pole switch is no longer necessary.