42198 Bush Plane

[Paul B Technic]

Review: LEGO Technic 42198 C Model - Combine Harvester

 

On the website Rebrickable, the model is listed as MOC-226110 and titled “42198 Combine Harvester” by artemisovsky. It uses 277 parts. 

It’s an alternate build of the official set 42198‑1 Bush Plane (which has 333 parts) — meaning you can take the parts from that Bush Plane set, use no extra spares, and build this combine harvester instead. 

The key features listed:
- Hand-of-God (HoG) steering on the rear wheels. 
- A working thresher driven by the front axle. 
- An opening hopper. 
- A functioning header (the front cutting bar) with raising and lowering. 
- A movable auger. 

The designer notes that the build uses some “unusual” wheel gearing because the original set only provides three wheels and he had to press a tire with a gear — which might be a “grey area” in terms of part legality. After building this, it seems to work "ok" but does have some room for improvement.

Why this is interesting
This MOC has several appealing angles:
Compact alternate build: Taking one set and converting to something entirely different is a great fit for my mindset of doing more with less.

Mechanics rich build: Steering, driven thresher, header lift/lower, auger movement — plenty of mechanical motion to explore or modify.

Strong modification potential: While this is already a well-designed MOC, you could use it as a basis for further customisation.

Minimal parts overhead: Because it uses only one official set, it’s efficient. I value efficiency and predictability in my builds and this ticks that box.

Final thoughts
This combine harvester MOC is an elegant example of how you can extract more from a single set, something I value given my low-footprint/efficient hobby orientation . It also aligns with my love of mechanical motion and system design.

Building it gives you a fun, relatively compact project, and turning it into a modified version adds even more play value.