Paul B Technic

A video of some changes I have made to improve this. https://paulbtechnic.blogspot.com/2025/11/lego-technic-42198-c-model-combine.html

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.

I personally am focusing more on older sets, to do MOD's and MOC's. I only buy new sets to get parts these days.

This is amazing and my next purchase will be these two sets to build it.

Working brakes would be awesome.

I love the level of detail you have managed to get in to this, well done.

Very nicely done.

Amazing....

Project 42213 Unimog Mods and Attachments – 11/09/2025 – Rear Mower Video - https://paulbtechnic.blogspot.com/2025/09/project-42213-unimog-mods-and_11.html

Project 42213 Unimog Mod - 08092025 - Tilting Tray Removal and Rear PTO Added Today’s update on the 42213 Unimog C Model brings a big functional change at the back of the truck. I decided to remove the rear tilting tray feature. While it added some realism, the movement was limited and it restricted what I could attach to the truck. By taking it out, the rear of the chassis is now cleaner and provides a stronger mounting point for future attachments. In its place, I’ve added a rear PTO (Power Take-Off). This modification allows the Unimog to power rear-mounted equipment through a simple gear connection. The PTO is driven via the central driveline and sits neatly at the back of the chassis, ready to connect to different add-ons. This upgrade opens up a range of new possibilities for attachments — such as mowers, winches, augers, or anything else that can be powered by the truck’s gearing system. The PTO is geared with a small bevel gear assembly (shown in the picture above) and keeps the build compact while remaining robust enough for Technic-scale accessories. With the tilting tray gone and the PTO installed, the rear end of the Unimog is now much more versatile and better aligned with the “multi-function truck” idea I’ve been working towards. Stay tuned for the first attachment to use this new PTO system! Video - https://paulbtechnic.blogspot.com/2025/09/project-42213-unimog-mod-08092025.html

I purchased 8832 when it first came out (1988) and have purchased three more copies off eBay in the last 15 years, these have all had the same instructions. Given that 8720 came out in 1990, and this was a number of years after these sets were released, I am not sure if / why TLG would have gone back and made official instructions for these older sets, especially the smaller ones, such as 8832 and 8835.

If they can make the "new" 42122 as good as 42213, I will be very happy.

Project 42213 Unimog Mods and Attachments – 04/09/2025 – Sorter and Loader Ramp Video - https://paulbtechnic.blogspot.com/2025/09/project-42213-unimog-mods-and.html

That is coming along really well.

I really love the level of detail in this.

Project 42213 Unimog Mods and Attachments – 31/08/2025 – Cherry Picker For today’s addition to the Unimog C Model (based on set 42213), I’ve built a Cherry Picker attachment. This is one of those functional add-ons that really expands the possibilities of the truck, giving it a realistic utility vehicle role. Features: Elevating Boom Arm – Built using liftarms, beams and pin connectors, the cherry picker has a strong, stable structure that extends upward and outward. Rotating Base – The entire arm is mounted on a rotating turntable, allowing it to swing side to side for positioning. Adjustable Bucket – The bucket at the end can comfortably hold a minifigure-sized worker for play or display. Manual Operation – The lifting and lowering is handled by simple gear mechanisms, keeping it mechanically sound and fun to use. Compact Mounting – The cherry picker attaches neatly to the rear bed of the Unimog, without needing major modifications to the truck itself. Why a Cherry Picker? The Unimog has always been known as a versatile workhorse, used in real life for everything from snow ploughing to forestry. A cherry picker attachment fits perfectly into that theme, making this model feel like a genuine service truck. Whether it’s "repairing" LEGO streetlights or trimming Technic trees, the functionality adds a lot of play value. Build Notes: The boom is reinforced with triangular bracing to prevent sagging when extended. The proportions of the bucket were chosen to keep it lightweight but still large enough to look realistic. The mechanism for rotation and lift is deliberately simple, so it doesn’t overwhelm the scale of the truck. Final Thoughts: This cherry picker mod gives the 42213 Unimog another layer of realism and utility. It looks great alongside the other attachments and continues the tradition of making the truck a true multi-function vehicle. https://paulbtechnic.blogspot.com/2025/08/project-42213-unimog-mods-and_31.html

This is very cool, excellent looks and features.

Project 42213 Unimog Mods and Attachments – 26/08/2025 – Scissor Lift Today’s addition to my Unimog C Model (42213) project is a scissor lift attachment – a functional and eye-catching build that gives the truck even more versatility. The lift mounts securely to the back of the Unimog, using Technic pins and bracing. Operation is simple – a lime green beam is used to raise and lower the scissor mechanism, allowing the platform to extend smoothly upwards. One of the features I wanted to add was stability and safety. To achieve this, I included a manual locking feature: a 3L black lift arm, connected via a blue half axle pin, which can be pushed into place to lock the scissor lift at various heights. This prevents unwanted collapsing when the lift is extended. For the design, I chose a dark grey and red colour scheme. This ties in nicely with the red cab of the Unimog C Model, while also giving the lift a bit of contrast to stand out as a separate functional attachment. This attachment works well alongside the other modifications I’ve been building and continues to showcase the adaptability of the 42213 Unimog C Model as a platform for different tools and machinery.

Project 42213 Unimog Mods and Attachments – 25/08/2025 – Road Roller One of the great things about the LEGO Technic 42213 Unimog is how adaptable it is for attachments, and today’s project is another example of this flexibility – the Road Roller attachment. This attachment is designed to tow behind the Unimog using the rear tow bar (added in my previous update). It features two pairs of wide wheels placed side by side, giving it a proper roller look. The doubled tyres give it enough weight and surface area to really resemble how a roller would press down and smooth surfaces in real life. The build is simple but effective: A long tow arm connects securely to the rear tow hitch. Two axle beams hold the paired wheels in place, providing a sturdy base. The attachment is reinforced with lift arms and connectors to keep everything aligned and stable while being pulled along. From a play and display perspective, it works really well. The roller follows behind smoothly, and the paired tyres give a realistic rolling effect. It’s also modular, so it can be easily detached and swapped out for other tools when needed. This attachment opens up more possibilities for construction-style play with the Unimog – you can imagine it grading a dirt road, flattening gravel, or finishing off a construction site. Another small but satisfying upgrade to the ever-growing list of attachments for Project 42213!

Well done to the winners and all the entries, all really great builds.

Once I get some motors ;)

Project 42213 Unimog Mods and Attachments – 24/08/2025 – Tow Bar One of the things I enjoy most about working with the 42213 Unimog is creating practical modifications that expand its playability and functionality. Today’s mod is a simple but very effective addition: a rear tow bar. The Tow Bar The tow bar attaches neatly to the rear of the Unimog’s chassis, giving it the ability to tow along different attachments. This small feature really opens up new options for connecting trailers, custom tools, or other builds that can be pulled behind the truck. To give it strength and stability, I braced it using a pair of 3L black lift arms mounted against the rear of the chassis. This ensures it can handle the stress of pulling loads without flexing or coming loose. Locking Mechanism For added realism, I included a grey folding part which flips down over the tow point. This helps lock attachments in place and gives the tow bar a more authentic, functional look. It’s a small detail, but one that makes a big difference when actually using the truck. Why This Mod Works The Unimog is already a highly capable off-road truck, and the tow bar brings even more utility to the build. It adds to the overall versatility, making it feel more like the real thing – a truck that can handle not just off-road terrain, but also hauling equipment and attachments where they’re needed. Final Thoughts This tow bar may seem like a minor update, but it’s one of those little modifications that really improve the play value of the Unimog. With it in place, I can now design and experiment with new towable attachments that expand what this truck can do.

I’ve always been a big fan of LEGO Technic Unimogs. My love for them goes back to set 8110, which I used as a base to build a wide range of attachments a few years ago. Since then, I’ve enjoyed creating various multi-function off-road trucks—mostly Unimogs and similar trucks—where I could experiment with designing and building attachments to extend their functionality. So, when I discovered that the LEGO Technic 42213 Ford Bronco had a C-model designed in the style of a Unimog-type truck, I knew right away that it would make an excellent base for further modifications and attachments. Front Modifications One of the first changes I made was to the suspension. I added a 5L black beam across the front. While this may look like a small adjustment, it’s actually quite important—it creates a sturdy mounting point for front-mounted attachments. This is going to be the connection hub for tools and add-ons, making the truck far more versatile. Rear Tray Improvements On the rear, I modified the tray by removing several of the flat panels. These were replaced with Technic beams, which give the tray a much more solid structure. The main benefit of this change is that it allows rear attachments to be added or removed with ease, and the tray itself can better handle the stresses of heavy loads and mechanisms. Stronger Lifting Mechanism I also reworked the tray’s lifting mechanism. Originally, it tended to flex when raised to its highest point. With my modifications, the lifting action is now much stronger and stable. This makes the truck far more reliable when using the rear tray for functional builds. Looking Ahead While these changes technically go beyond the “official” C-model—since they require extra parts—the overall look and style of the Unimog remains the same. That’s important to me, because I wanted to preserve the truck’s character while boosting its playability and strength. This Unimog is now set up to be a fantastic base vehicle for future attachments, and I’m really looking forward to designing a range of front and rear tools to pair with it. Much like with my earlier 8110 projects, I see this truck becoming the heart of a new system of interchangeable Technic builds.

I found myself shaking my head at a fair bit of that video.

LEGO Technic 42144 Material Handler – Mod – Loader Claw More photos and video here - https://paulbtechnic.blogspot.com/2025/08/lego-technic-42144-material-handler-mod.html