Paul B Technic

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

Finally got hold of this and did a review: https://paulbtechnic.blogspot.com/2025/08/review-lego-technic-42125-ferrari-488.html

I did, it is the best C model I have ever built.

Designed By DamianPLE Technic Garage The LEGO Technic 42213 – Ford Bronco is a solid set in its own right, but this C model Unimog designed by "DamianPLE Technic Garage" takes it to an entirely new level. It captures the rugged utility of the classic Unimog in a compact scale, with a surprising number of working features packed into the build. Functions Openable hood – Reveals the V6 engine detail inside. Working V6 engine – Driven by the rear wheels, adding a realistic touch. Steered front axle – Smooth and effective, though placement is key during the build. Working suspension – Both front and rear axles have suspension, giving it great playability. Tipping cargo bed – A small but effective mechanism that really makes it feel like a functional work truck. Build Experience| The build process was mostly smooth, but I did encounter one hiccup at step 22. I accidentally placed the 2L beam with axle hole the wrong way around, which left the steering inoperable when I completed the model. Thankfully, after going back over the instructions, the error was easy to spot and fix. Once corrected, everything worked flawlessly. Final Thoughts I am a huge fan of this model. It’s an excellent C model that not only looks amazing but also fits perfectly within a building and construction theme. While it is quite a bit smaller than LEGO Technic’s iconic 8110 Unimog U400, this doesn’t take away from its charm or play value. In fact, I see this as an ideal base for future modifications and custom Unimog-style attachments. Overall, I actually think this build is better than the official A model. It combines looks, functions, and modding potential into one compact package. I’m really looking forward to making good use of it as a platform for some creative upgrades in the future. Verdict: Highly recommended – a brilliant C model that punches well above its weight. Left Over Parts https://paulbtechnic.blogspot.com/2025/08/review-lego-technic-42213-c-model-unimog.html

8455 was the only Technic set I purchased for about 10 years, I still miss it. This is a great redesign of it.

Very nicely done.

The versatile LEGO Technic 42121 B Model gets a forestry upgrade! I’ve transformed it into a Forest Skidder, perfect for hauling logs and tackling rugged terrain in style. From Tracks to Wheels The original B Model came with tracks, but I wanted more maneuverability and speed. I swapped them out for wheels, which meant removing one gear from the front axle to allow proper steering clearance. The end result is a smoother, more responsive machine that still looks rugged and ready for action. Body Tweaks Alongside the wheel conversion, I made a few changes to the bodywork. Some panels and beams were adjusted to better fit the new wheel setup, giving the Skidder a cleaner and more proportionate look while still keeping that tough, industrial feel. New Rear Grabber The biggest change is at the back—gone is the standard rear bucket. In its place is a functional grabber claw, powered by a small linear actuator (LA). The claw can open and close with precision, making it ideal for lifting and moving logs or other cargo. Added Tow Point No forestry vehicle is complete without towing capability! I added a rear tow point so it can easily pull my Wheeled Sorter MOC or any of my other custom trailers and attachments. This turns the Skidder into a truly multifunctional workhorse. Final Thoughts This mod takes the already fun 42121 B Model and gives it a whole new purpose. The wheel conversion improves playability, the grabber claw adds more functionality, and the tow point extends its usefulness beyond just forestry work. https://paulbtechnic.blogspot.com/2025/08/lego-technic-42121-b-model-mod-forest.html

This is very impressive.

That is very cool.

This build takes inspiration from the Snow Plow C Model of LEGO Technic set 42203, but with a fresh and functional twist — transforming it into a fully operational Rubbish Loader Body. From Snow Plow to Street Service While the original C Model is great fun, I wanted something more urban-service themed. The result is this rubbish loader body, designed to mount onto the 42203 truck chassis with minimal changes. Key Features Rear Claw Bin Lifter At the back, a compact but sturdy claw mechanism allows the loading of a rubbish bin into the truck. The claw arms swing up smoothly, making it easy to simulate real-world bin collection. Tip-and-Empty Action The entire rear tray body lifts up, and as it does, the rear door automatically opens to allow the rubbish load to empty out — just like the real thing at a landfill tip. Quick-Release Mounting The body is connected to the chassis using only two pins, making it quick and easy to remove or swap with other attachments. Modular Play Possibilities Because the body is detachable, this mod opens the door for more interchangeable service vehicle bodies — from tippers to water tanks — all based on the same robust 42203 C Model frame. This mod keeps the compact size and charm of the original C Model, but adds new play value and realism for LEGO Technic fans who enjoy municipal service vehicles. https://paulbtechnic.blogspot.com/2025/08/lego-technic-42203-c-model-mod-rubbish.html

This is very cool, I am tempted to get a second copy of 42213, just to build this.

Very nicely done :)

That is very cool. Great design and features.

This be of interest, a great C Model. https://paulbtechnic.blogspot.com/2025/08/review-lego-technic-42203-c-model-snow.html

This is very cool.

These reviews are a worry... https://www.lego.com/en-au/product/volvo-ec500-hybrid-excavator-42215

I do like it, I just think asking $10 for the instructions is a bit "much". I just had a quick look at other C models on Rebrickable that are around the same piece count. Some are free and a most are between $4 and $6. As an example: $12 - https://rebrickable.com/mocs/MOC-191632/erictrax/42177-unimog-u423/#details $14 - https://rebrickable.com/mocs/MOC-192353/M_longer/42177-unimog-437-snow-plow/#details If you were charging $5, I would have already purchased your instructions.

My comment was on the price of the instructions, not the quality of the C model.

This looks like a decent build but for $10, I was expecting something "more" than a rehash of the A model.

Another day, another machine! I’m excited to share my latest custom LEGO Technic build — the Wheeled Separator — a compact, functional, and fun model designed to mimic real-world sorting equipment, but in a smaller Technic scale. 💡 Inspiration and Concept The inspiration for this MOC came from the B-model of LEGO Technic Set 42055 - Bucket Wheel Excavator, which included a fantastic sorting mechanism for mining operations. I’ve always loved the idea of machines that do something, and I wanted to bring that concept into a smaller, more modular form. The result is this mini-sized separator system that fits right into my growing ecosystem of LEGO construction equipment. ⚙️ How It Works This Wheeled Separator is built around a functional sorting system using conveyor belts and gravity: Loading Hopper: Parts are loaded in at the rear hopper. Conveyor Belt System: These carry the pieces forward through the sorting frame. Separation Mechanism: Smaller parts fall through the gap in the middle section and are diverted to a side output chute, while larger parts continue along to the bottom conveyor belt and exit via the yellow front ramp. It’s simple, visual, and surprisingly fun to operate — just like the big machines! 🔄 Modular Integration ✅ Material Handler Compatible: It’s specifically designed to work in tandem with LEGO Technic 42144 – Material Handler. The Material Handler can easily load parts into the hopper, creating an engaging and realistic play sequence. ✅ Towable by 42209: Thanks to its compact wheeled base, the Separator can also be towed behind LEGO Technic 42209 – Volvo L120H or my modified versions of it, making it a great addition to mobile work sites. 📐 Design Highlights Compact but detailed frame using mostly Liftarms and Technic panels Realistic conveyor belt motion (manual or motorisable) Easy part flow demonstration using LEGO pieces of varying sizes Black and grey colour scheme with functional yellow accents for realism This build represents my ongoing interest in creating modular, playable Technic machinery that both looks the part and "does something" — and this Wheeled Separator does just that. Video - https://paulbtechnic.blogspot.com/2025/08/moc-lego-technic-wheeled-separator.html

I wonder if TLG will see how poorly this has been received and take it in to account for future sets? It is the first time I can recall seeing a set that has been so negative...