Culemeyer trailer (Strassenroller) for 1-Gauge (1/32).

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Culemeyer Trailer (Strassenroller) for 1-Gauge (1/32). Updates: 2019-03-06: Added missing mounting for drawbar. Prototype: In the early 1930s, German railway engineer Johann Culemeyer started developing a trailer system to transport freight wagons to companies without direct connection to the railway network. His idea was to move entire wagons to simplify logistics for these companies. Culemeyer developed several different trailers to transport wagons on streets, including self-driving models. During the 1950s and 1960s, more than 150 trailers were in regular service in Germany and served hundreds of companies at about 120 cities. Two key factors influenced the development of these trailers: building them as low as possible to facilitate easy loading and unloading of wagons, while also passing bridges with a low clearance. The other factor was reducing pressure on the street surface. The maximum weight of the model shown was 48 tons, requiring 16 wheels to keep the pressure of one wheel at 3 tons, thereby avoiding problems with the toughness of the street surface. CULEMEYER trailers were used by German railways until late in the 1980s but had largely been replaced by container systems earlier. Prototype Pictures courtesy of Dietmar Eichhorn. ### More information: https://en.wikipedia.org/wiki/Johann_Culemeyer https://de.wikipedia.org/wiki/Stra%C3%9Fenroller (German) http://www.mitteldeutschesbahnforum.de/t7308f16-Culemeyer-in-Salzmuende.html (pictures showing the loading of a wagon in 1989) The Model: The model is designed using the sketch from "Die Eisenbahn ins Haus" (The Railway to Your Door) by J. Culemayer for the 1936 16-wheel model, which was used by East German Reichsbahn until 1990. The model consists of two different chassis parts connected by a rod. The "female" chassis also contains the brake cylinder and an air tank. The model is only usable with NEM or fine-scale 1-gauge wheelsets. LGB (G-scale) wheelsets will not match in most cases. How to Print and Assemble: The model shown is printed in regular PLA, while the wheels are made of TPU. Printing the wheels resulted in best results by printing only one item on the build plate, which avoids stringing and unwanted effects on the wheel surface. The wheels should be mounted to 4mm metal shafts (30mm long). Both chassis parts are connected by a 4mm shaft, which I used metal rods for these parts.