Large RC Combine Harvester

This creation is a model of a large sized combine harvester. It is a very accurate representation of real machines of this size and has several authentic functions.

Here is a brief summary of the models functions:

There are two main highlights of this model that I am Really proud of. First is the Internal combine threshing and cleaning system. The inside of the machine is filled with a detailed replica of the internals of a real combine. It features both a pre threshing drum, and two counter rotating rotors which, in a real machine, separate the grain of the crop from the rest of the plant. Underneath the threshing drums and rotors there are several reciprocating grain pans and sieves whose job in a real combine is to sift and sort out the clean grain from the unwanted straw and chaff. these systems are accurately replicated in the model. Towards the rear of the model there is a rotating straw chopper and working chaff spreaders. Please have a look at the video below to see the highlights of the model. There is no real way to elegantly show off the inside of the model in the photos, and this thing really isn't about the outside looks.

The second Highlight is the auger swing/unload system. The model features an authentic grain bin which incorporates rotating floor augers to feed grain from the bin to the main unload auger. The drivetrains of these two functions are connected to a single motor via a differential, such that when the main auger has swung out all the way, the floor augers start automatically.

I built this model to mainly for fun, but also to showcase the impressive and complex inner workings of the combine harvester. They are very impressive feats of engineering and I think a great opportunity for a large, complicated Lego set.

Below is a short video showcasing the models functions. Apologies for the slightly dodgy lighting and camera work...