PDF instructions for building a "Galloping Goose", a mixture of train and car. These unusual vehicles were first used in the USA in the 1930s because they were much more profitable than the large steam locomotives. So these locomotives were sought and found as a kind of "compromise solution".
The model is approx. 58 studs long and consists of approx. 883 individual parts. The model can be motorised either with a Power Functions XL motor, a Power Functions train motor or a 9V motor. The additional components required for Power Functions are conveniently located in the load compartment. Both roofs can be removed.
 
The model was specially developed for the 3D printed wheels available here, but can also be equipped with standard LEGO wheels by making small adjustments.