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Finally, I built something too small to motorize: This is a Breuer Lokomotor, or shunting tractor. This tiny vehicle was made for moving rolling stock around stations that for economic or logistical reasons could not have a full-sized shunting locomotive. They were powered by inline petrol (and in later models, diesel) engines mounted transversely in the body, connected to a manual transmission and powering the wheels through a chain drive (!). The tractors themselves don't weigh much; to get enough working weight, each end of the tractor has a screw jack that lifts the wagon it's attached to, thereby "stealing" some of its weight for traction. The Type 3 Lokomotor differs from the Type 4 in that it doesn't have an enclosed cab (hard to build at this scale...). The Type 4 is also rated for higher pulling power. At the scale of this model I didn't have room to include magnets, but it's possible to connect the screw jacks on the model to the "new" buffers with a few plates: The short wheelbase of the Lokomotor means that this arrangement will traverse switches and curves, despite the fact that, properly, there should be another joint in the connecting link. Unfortunately, it's not powered. Full Brickshelf gallery here, and instruction gallery here. Thanks for reading!
