Concept John Deere Bulldozer


In what is becoming a little bit of a theme, I submitted another design for a Lego contest. In the long line of Eurobricks.com contests, the Technic Challenge 10 called for a pneumatic build. Challenge accepted!

Full Gallery Here

Concept John Deere Bulldozer Left

The contest had very few constraints other than the build had to use Pneumatics. As I have mentioned before, working with pneumatics is not my preference. I don’t like them, so it was good for me to step out of my comfort zone.

I was feeling especially creative this time, so I thought about a number of concept ideas. Pneumatics do not tend to work smoothly when lifting arms so I decided against an excavator and a loader early. Additionally, I was not willing to invest in additional parts for this project. After a couple of drafts, the idea of this bulldozer was born. Taking some inspiration from some of John Pope’s design, the basic idea was there. The dozer would have different tracks, a three movement blade, a crazy engine, and a forward thinking design.

Concept John Deere Bulldozer Blade

I started with the tracks. After moving the axle points four wheels countless times, I came up with a design I liked. I made another one, and linked them together. The I worked on the blade. The dozer would have a lift, tilt, and side to side angle adjustment. After playing around with some idea, I found a solution I liked. Two pneumatic rams were on the front to lift the blade on the top. Then two links were connected low on the two sides of the blade, and then on each side of the dozer. These points on the dozer were moved fore and aft by on pneumatic ram each. These side rams would move the blade left or right individually, or together they would tilt the blade up or down. Additionally, it allowed all the tubing to be internal.

Concept John Deere Bulldozer Open

I added a small compressor powered by a Power Functions M motor, and the battery box under the cab, and added the 16 cylinder engine (coupled V-8 and Flat 8). The cab was easy to get the shape I wanted, and gave me some space for another pneumatic ram to open the hood. I then decided to add a ripper since I had one pnuematic left. The new 1×11 ram a great addition, but a little more power could have been used for the ripper.

Concept John Deere Bulldozer Chassis

I was pleased with the look the bulldozer. The functions worked well, but on reflection, the were not exciting enough to be competitive for a contest. After two pneumatic builds in a row, I find some of the frustrations I have with them remain, but I am discovering some charms as well. We’ll see what comes next.

Happy building.

International Tow Truck


I have so many pneumatic parts, but I do not build with them often. It was time for me to use them.

DuraStar

Since this would be an intentional pneumatic MOC, I wanted to do something small and simple. I thought a tow truck would work well. As many of my trucks are based on Europian models, I figured it was time to do an American truck. The International DuraStar truck seemed to be a good solution, and they are rather ubiquitous her in the States. It is not too big, and not a pick-up based truck, so it was perfect for me.

I first started with the tow boom. I used the new 1×11 cylinder for the boom extension. I used two of the old 2×9 cylinders for the boom lift. I worked hard to get the boom rigid enough for the extension while remaining small. Still the boom is about twice the width and height of the required scale. It is a little flimsy with a heavy load.

DuraStar Hook

The chassis was more work than it should have been. Working in all the pneumatic parts is simple enough, but giving space for all the tubing and flexibility required much work. Add to the fact that the  chassis needed to be strong enough for a Pneumatic pump, and I thought it would be good to have a working driveline, and it got messy fast. Editorial comment: I like clean designs. It’s hard to have clean designs with pneumatics.

DuraStar Chassis

The rear wheels connect to a 2 cylinder fake motor in the front. I did not use a differential. It fits, but I could not find a solution to keep the wheel axles connected to the differential while retaining the rear dualies. All of a sudden the choice of not having a differential in 42022 makes a little more sense. I added a little car lift on the back. The elevation is controlled by worm gear, and the extension simply uses two friction connectors. In front of the dualies is a pneumatic air tank on the right, and the two control valves on the left. Hoses fill up the rest of the space. Above the air tank is worm gear transmission for the winch.

DuraStar Right

I spent a lot of time working on the hood. The cab came together smoothly, but the hood took some work. Working with something that was rigid enough for my standards took some time. I tried some designs with panel, and some designs with plates and wedge plates. Eventually, I settled on a simple studs-on-top brick and plate construction. The mixture of Technic and system looks a little disjointed, but it represented the shape well.

The truck worked well enough. The steering and fake motor worked smoothly and consistently. The pneumatics worked smoothly, and were able to move the functions of the truck well. The car lift on the back cannot handle too much weight.

Two final editorial comments. I am firmly in the linear actuators camp, as I have said before. Fitting rams, running tubing, and trying to use those little valves just to get position of the pneumatics perfect drives me crazy. Second, I really like the 49.5×20 wheel and tire set. It is a great size and has perfect look. But when I build trucks with them I get frustrated. They look better as dualies on the rear, but there is no good connection to a differential on a 15 or 17 wide setup. Eventually I will find a solution, but at this time, they are driving me crazy, so stay tuned.

Happy Building.

Volvo FE Garbage Truck


My favorite vehicles to build are garbage trucks (Ok, maybe trial trucks). I enjoy the many functions that I can create. I enjoy the diversity of shapes, sizes and colors, and I enjoy how ubiquitous they are. But I have not built many. So it was time to fix that.

Volvo FE Refuse

I was originally going to do a large scale truck, but as my temporal limitations are becoming ever more apparent, I decided to do something smaller this time. The 13 stud wide truck is popular in the Technic community, so I decided to go with that. I very much enjoy the Volvo FE, so that was my truck. Since my last truck was one with three axles and Power Functions, this one would have two axles and be manually controlled.

Volvo FE Extraction

I searched high and low for garbage box that would work well: Gesink-Norba, Heil, McNeilius, EZ-Pak, Dennis-Eagle, Ros Roca. All required a compactor that would need a round base for the trash to collect. Curves are hard to do in LEGO. I had some trouble with refuse compaction cycle working well on the Axor due to the floor curve on the hopper. I wanted a compaction cycle that was more simple and more reliable. So I designed my own.

It’s dead simple.

There is a angled elevator in the hopper that goes straight up and down. The center gear on the outside of the hopper that moves the elevator. When refuse is placed on the elevator and lifted, the refuse will fall over an internal wall at the top of the cycle. The refuse falls into the compaction bin, until the rear hopper is opened. Bigger parts sometimes gets stuck on the cross axle.

Volvo FE Hopper

Inside the compaction bin, is an extraction plate. Turn the gear down near the front left wheel, and you drive a mLA to move the internal extraction plate. Everything works well for small LEGO refuse parts. I built the side of the compaction bin with slopes and tiles. After a number of panel attempts, this one seemed to be the best looking option. I very much enjoy the shape.

Volvo FE Compactor

Since I had a little more internal room, I added a driveline to the truck. A rear differential powers a small fake inline 2 cylinder engine under the cab. To check it out, the cab tilts forward. The steering axle serves as a friction connector so the cab does not open unless you intend it to tilt. The doors open, and the bodywork was designed to mirror the Volvo FE 2011 body style. I built a small red refuse bin to show off the functions of the truck.

This may be my favorite build of the year. All the functions work perfectly, and the model looks great. I think I could add a tilting bin function, and add another mLA to give more strength to the extraction plate, but other than that I am not sure I would change anything. I will keep this one built for a while.

Happy building.

 

Kalmar DCG180-9


After doing a lot of non powered builds, it was time for me to do something motorized. I very much enjoyed doing a forklift a couple of years ago, so it was time for another one.

See the full gallery on Flickr and Brickshelf.

Kalmar 180

The JCB930 that I did a couple of years ago was non-motorized and had some great features. I wanted to build something with all the same features, and since I would need more room for all the electronics, I decided early to model the forklift after the Kalmar mid-sized 180 model. The model would have drive, steering, a two stage lift, and fork tilt. I did not realize how hard this would be. I wanted to keep the  boom clear for visibility, and the forks not more than two studs in front of the wheels to keep integrity of scale.

Kalmar 180 Front

I set the scale and I went to work. After setting the chassis measurements, I went to work on the fork and boom. I knew I wanted to have a two stage boom, and I wanted to keep as much of the boom open as I could. The forks connect through the middle of both the first and second stage booms, and pinch both together. The middle boom is has a gear rack on both sides to lift the forks. This boom has two gears at the top, to route the chain over the top to move the forks. The outer boom is connected to the chassis at the bottom, and two mLA connect to it operate the tilt. After some working, I was able to get the boom to be thin, and just how I wanted.

Kalmar 180 Up

I decided early that I want to keep the motors out of the boom. So I had to route the lifting function out to the forklift body through the bottom pivot. This required routing the lifting axle under the drive differential. The lifting axle then move rearward, and connected up to a PF L motor. On top of the lifting axle was the drive axle. The PF XL motors was mounted transversally on the right side, and drove and axle forward to connect directly to the differential. To give me some additional space at the front, a portal axle was mounted on its side to move the differential rearward. A PF Servo was mounted in the rear, over the steering axle, and drove the steering function. The steering uses some 2×4 liftarms mounted at an angle to allow for a better steering angle. Finally, a PF M was mounted in front of the Servo, under the cabin to drive the tilt function. None of the mechanics were difficult, but the packaging required a number of drafts.

Kalmar 180 Open

The final hurdle was the body work. I spend a lot of time early in my MOCs working on packaging placement, so I do not have many body work problems later in the build. Still, some simple SNOT work was needed on the side sills to fit about the battery box, and the XL motor. Oh, and the wires. The cab was pretty straightforward, but still took a little bit of time. Finally, I had some trouble with the rear engine cover and counterweight. In the end it was a simple design that I settled on, but I tried many designs. Again, this took a lot of time.

It took a long time, but I am pleased with the final product. The functions worked smoothly and consistently. The control that was afforded by the fork functions was great. It could lift three AA battery boxes at a time. The steering was quick, and had a great lock which gave great maneuverability. The XL motor provided adequate power, and moved the forklift well. Finally, the bodywork represented the original Kalmar well. I hope you enjoyed as well.

Until next time, Happy Building.

K-Tec 1233 Scraper


I find myself on diecastmodels.co frequently as it inspires many of my future builds. Most of the time the site gives me reference pictures, and sometimes it shows me something I have never seen before. This is the result of one of those late night browsing sessions.

See the full gallery at Brickshelf and on Flickr. Instructions may be found here.

K-TEC 1233

I wanted to make a scraper, and once I was browsing this site, I came across the K-Tec. It was a different set-up that I thought looked fun. I was hooked. Early I decided the MOC would be perfect for the newer 49.5×20 tire, so the tire set my scale.

I started with the suspension for the tractor first. I did not have too much room to work with on the rear, so I set two differentials together, and connected them via two 20T gears. The rear one connects above to a 12T gear, which transmits rotation to the fake motor in the front. The two axle assembly pivots at this gear connection and connects to the rear wheels, so no u-joint is needed. The middle axle connects to the rear assembly through the differential connecting axle. This simple set-up allows for all four wheels to move freely, and independently.

K-TEC 1233 ADT Suspension

I then added the front cab. It is not too complex with a differential fixed for the front axle, and a two-cylinder fake motor above it. A HOG gear is above the cabin which pulls a liftarm for the steering. A turntable is used to provide articulation between the cab and the rear chassis. Then a simple body was made, and off to the scraper.

K-TEC 1233 Tractor

I then worked on the scraper part; kind-of. I knew when I started this project I would need a bunch of 1×6 arch bricks in yellow for the front gate. There are not many of them, so I started ordering them over the course of three months. As each would  arrive, I worked on the scraper. I first set the dimensions and worked on the lifting mechanism. It was a little tricky to find the correct geometry while not taking too much room, and keeping the upper pivot point small while using to mLAs for the movement. I found a good solution, but a little more stiffness in the assembly would have been great. I added an extraction plate at the rear driven with a worm gear assembly resting between the rear wheels. Another stud of travel would be great, but it was not worth adding another four stud gear rack to make that happen. Finally, all the parts arrived for the front gate, so I installed it. Because the walls of the scraper are only one stud thin, I did not want to mess with the thickness of the sides to much by adding a mechanism for the gate movement. Each assembly I tried with a mLA or a worm gear set-up looked clunky or bulky. I ended up with a friction pin with a gear to move it. It is not very fancy, but it works well. At this scale, it is all that needed.

K-TEC 1233 Gate

All in all, the MOC turned out OK. It would have been better to have a stiffer hitch arm, and I would have liked a different solution for the entry gate. I was pleased with the size, and I enjoyed packing a number of features into the small (but long) MOC. Finally, for some reason the MOC does not please my eyes as much as those first pictures I saw on diecastmodels.co. Maybe it just needs to be a little bigger.

Until the next one, Happy Building.

Snowblower/Tractor


I participate in only some of the contests that are available in the online LEGO community. I generally participate if it meets the following criteria: Is the challenge within my competencies? Does the contest align with other responsibilities/projects to which I have already committed? Can I be competitive? Frankly, it is the last question that often stops me. The preceding two questions determine my limitations, and considering how good many other builders are it is not often I participate. With this in mind, I decided to enter the Eurobricks Technic Challenge 9 (nine already!?).

Edit 2016.02.16 : The contest has completed, and this Model came in second! See the results page here, and all the votes here. Thanks to Eurobricks for the contest.

A full gallery with Instructions can be found here.

Snowblower

Tractor

What interested me in this contest was the constraints, and to a lesser extent the topic. the constraints stipulated that both MOCs had to fit within 10,000 cubic studs. I got out my calulators, and started playing with numbers. I was hooked. Additionally, building one MOC is hard, and building two from the same parts seemed very hard. It was something I had never done, and only a few builders can develop a good B or C model. The planning stage would be critical. Both models would have to be planned together right from the beginning. I toyed with a Combine/Tractor, and a Pipelayer/Crane, and even a Airplane/Boat. With each of these designs, I realized I would be using too much space with a long appendage, such as the Combine’s implement, or the Pipelayer’s arm. The cubic studs required something more…cube shaped. I eventually settled on a Snowblower and a Tractor. Both were a little more square and had similar components (wheels, engines, colors, chain links). I knew I would need to build both together, and multiple renditions would be needed. I was ready to start building.

Snowblower Rear

Pretty early, I settled on 17x17x34 studs for the Snowblower. I challenged myself to include steering, a working blower, and a working salt spreader. I build the basics of the blower implement right away, complete with rotation coming from the truck drive. On the rear, I added an implement lift using a worm gear setup, and a quick link to the truck . Next, I worked on the chassis of the truck. I added portal axles, because I could not get the 5L wheel axles to say connected to the differential. This also helped to clear the front PTO from the steering function, which was linked directly to a HOG gear on top of the cabin. The salt spreader needed a take-off gear for the conveyor belt, and the discharge plate would be driven separately from the rear differential. The mechanics were set. I then worked on the cab. I made sure the cab, the blower, and the spreader could be easily removed by removing up to four pins for each. It’s a fun modular function that allow for other attachments.

Snowblower Modules

I first made a pile of all the parts used for the truck while it was still built, and made a first draft of the tractor. Based on the parts of the Snowblower, the tractor would have four wheels, a 2 cylinder engine, and something with a whole bunch of 3×3 round, red, liftarms. I first modeled it after a John Deere 7R series, but realized this would leave me with too many left over parts. I then tried modeling it after a Claas Saddletrac. This seemed to be a better fit. I then took apart the Snowblower, making instructions as I went. I then used these parts to make the official model B. Over the course of a week, I made many revisions.

Tractor Rear

Both models worked well, as none of the feature are too complicated. I was pleased with the A model as everything functioned as it should, and it looked great. The tractor was simple, and it’s simple functions worked well. I was pleased with how it all turned out. It was great working with a limited number of parts for the B model, but I would prefer to clean up the look of the tractor a little better. This was a great little contest. I loved the restriction of the cubit studs, and I loved having to make a MOC with a defined group of parts. Now let’s see how the voting shakes out.

 

 

2045 Mercedes-Benz Athane


I enjoy participating in LEGO contests, but I cannot join all of them. Sometimes the timing, my build interest, and the available parts all line up in a way that I can submit an entry. I was able to submit something for the LEGO Technic Mercedes-Benz Future Truck Competition hosted at Rebrick.com because everything fell into place. I hope you enjoy the submission.

The full gallery may be seen here (flickr) or here (brickshelf).

Mercedes Benz Athane

While I would love to see us progress to flying and fully autonomous vehicles, a complete technological and transportational paradigm shift needs more than 30 years; see where we were in 1985. I envision transportation in 2045 will be affected by a couple of features:

  • Cities will be more dense
  • Active transportation will occupy a greater share of road users
  • Electric charging options will be more available and more diverse
  • Vehicles will still have drivers, but the drivers will be heavily assisted with technology
  • Fossil fuels will still be used, but significantly reduced and not limited solely to petroleum
  • Cargo will not change, but storage will
Various loads to apply to the Athane via the SmartStack System.

Various loads to apply to the Athane via the SmartStack System.

 

With this is mind the 2045 Mercedes-Benz Athane has been designed to best fit within this context. While taking this context into account, the Athane prioritizes three values as most important: Safety, Sustainability, and Versatility.

Placement of the large methane tanks. ThermoCommLink on right rear bumper.

Placement of the large methane tanks. ThermoCommLink on right rear bumper.

Here is the Press Release-

May 22, 2045, for immediate release

The 2045 Mercedes Benz Athane prioritizes safety, sustainability, and versatility. The 2045 Athane is the most advanced and cost effective truck in our 150 years of truck building experience.

As cities become denser and multiple transportation modes are becoming more prevalent, road safety for all road users must be paramount. The Athane’s ThemoCommLink (TCL), located on the right front and right rear bumpers, allow motorized vehicles to communicate to one another. The TCL also detects the heat signature of pedestrians and cyclists. Identification and communication with other users, keeps all road users safer. The driver is seated in the center and forward in the cab to increase vision. Retention of a human driver allows for relational interaction at the job site, and helps the technology make good decisions about varying road situations. The TCL Technology assists the driver so fewer errors are made. The front bumper shaping and full length wheel guards lowers the severity of crashes with non-motorized users should they occur. The Athane uses eight steerable wheels to improve weight distribution and increase city maneuverability. While many manufactures are switching to floatation and hover type drivetrains, this setup allows for unmatched braking control, and removes disruptive air currents to those walking and cycling close to the moving truck.

The Athane’s Methane-Hybrid driveline continues Mercedes Benz’s prioritization of decreasing fossil fuel use. The Athane uses electric propulsion using energy stored in the batteries under the cab and bed. Battery charging is done by braking and by a small methane powered combustion engine behind the cab. Additionally, the Athane can be ordered with an induction charger under the cab to work with newly developed induction charging roadways being installed in many municipalities. Methane gas is clean burning, and a significant byproduct of the waste and recycling process currently in place with Octan Rubbish. A partnership with Octan Energy and Mercedes Benz has developed a standard way to reap, store, transport, and fuel the Athane’s regeneration engine using methane gas. Removable methane tanks are house behind the rear wheels, and in smaller tanks in the cab.

Today’s logistics companies are searching for ways to improve versatility and lower cost. The Athane’s SmartStack systems allows for interchangeable bodies, cargos, and applications all with one common truck. The SmartStack system makes it easy to change the load in just minutes. The connection fits the international container standard. Many body work designers are applying this standard as well. In one afternoon, you can ship a container, deliver a load of concrete, and pull a fifth-wheel with the standard hitch.

Welcome to the future. The 2045 Mercedes Benz Athane keeps all road users safer, decreases our harm on the planet, and supports all work tasks needed.

Features:

  • 8 wheel steering
  • Sleeping bed
  • Aerodynamic cabin
  • In-cab Storage System
  • ThemoCommLink, front and rear
  • SmartStack System
  • Fifth-Wheel Hitch
  • Wheel Guards
  • Large/Low Bumper
  • Methane Tanks
  • Hybrid Motor
  • Induction Charger
  • Batteries
  • Passenger Jump Seat
  • Front and Rear Lighting
  • Video Mirrors on Each Side of the Steering Wheel
  • Visibility Focused Driver Placement

CAT 586C


My favorite constructions vehicles are feller bunchers. The wheeled ones. So I am naturally inclined to make them. I built a small one; I built a large one. I wanted to build a medium one, but I figured I should get out of the box. At least this time.

The full gallery may be seen here, and instructions may be found here.

CAT 586C

The CAT 586C is a site prep tractor. Forgive me for simplifying the work done by the engineers, but the tractor is basically a 573C with a new implement for site preparation, rather than felling. As always, I stared with scaling the full tractor from CAT’s website, and finding a size that would work well with tires, features, and aesthetics. Then I started building.

CAT 586C Rear

I started with the chassis, to get a sense of the size and the layout. I had a good idea of all the features I would want, and I knew some planning would be required. I then finished the mulcher (implement), which is basically a rotating drum with lots of teeth on it. I used a bunch of 24 tooth gears, and connected them to a rotating driveshaft. The chassis was built with four wheel drive, and was connected to the mulcher driveshaft through a series of gears to increase the speed of the drum.

CAT 586C Underside

Then on to the back of the tractor. Feller bunchers and site prep tractors all have their engines in the back; pretty normal for large tractors with large front implements. But to get the weight as far back as possible, the engine is mounted transversely. This presented a couple of challenges for me. I mounted a I-3 engine on the left in the rear with simple gearbox geared up to connect it to the drivetrain. Just in front of the motor are the two cooling fans, which are also driven by the drivetrain. These are also geared up. For those of you keeping score at home, the drivetrain gears up three separate functions, so rolling the MOC on the floor causes a nice whizzing sound.

CAT 586C Driveline

I added some additional features that mirror the real tractor. First, over the mulcher there is a guide bar that allows the tractor to push trees and shrubs down toward the mulcher. In my MOC this is accomplished by a simple worm gear mechanism. Second, I added a small winch on the rear to get the tractor out of sticky situations. Finally, a small mulching door was installed to allow for more or less entry to the mulcher, again just like the real tractor.

CAT 586C Mulcher

The tractor worked well. Functions were smooth, and required no maintenance during play. The many controls on the front were a little dense, and this caused some finger congestion. The number of rotational features connected to the drivetrain made rolling on the floor a little strained. Thought, this kept the MOC from rolling off the table into a lot of pieces. Everything worked well enough, so maybe it is time to make another feller in this scale. Not today, I still have a lot of other projects to complete first.

Happy Building.

Windrower


At any given time I have about 4-6 projects going on at a time. This is partly the result of the Queue, which is partly the result of my lack of focus. In the midst of all this planning, I find it therapeutic to sit down, and start something small, simple, and without a plan. Two weeks ago, right after finishing the ATS, I sat down, and in a couple of hours, completed a small windrower.

The full gallery including instructions may be found here.

Windrower

Some of my favorite MOCs are the smaller non-motorized ones I have done over the years, like my Feller, my Octan F1, my 4×4 8081, and my Sod Harvester. I built the Windrower to fit in this theme. A Windrower, or Swather, is basically a large lawnmower. The blades on the front cut down hay, and pull all the cuttings to the center to make a row of cuttings, or windrow, to be picked up later.

My version is rather simple. The two main wheels are connected to a center differental through two 8z portal axles. The differential drives a small I3 motor in the rear, and a PTO driveshaft comes out the front. The PTO drives a simple harvesting head made of four z24 gears which are connected with a number of z12 gears. The harvesting head can be raised and lowered by a simple worm gear setup. A simple steering system was created for the rear wheels, and it was connected by a liftarm to the smoke stack so you could control the steering.

The body work took a couple of Bricklink.com orders. After recently making a couple of MOCs in red, I felt the Case IH coloring would be a little redundant, so John Deere Green it was. My collection of green is growing, but there were still some parts needed. After everything arrived, I replaced all the red, and added some yellow wheels, and everything was set. A simple MOC, with some fun features, and an infrequent color.

Happy Building.

 

 

JCB 531


Astute readers will note the heading of Thirdwigg.com has changed to read “LEGO Technic from Grand Rapids.” A slight heading change notes a rather large life change for myself, Mrs. Thirdwigg, and Jr. Thirdwigg. This has caused a slight hiccup to production and the timeline of The Queue, but we are back in business.

A working telehandler has been on my list of machines to build for a long time. I finally acquired a 32l axle, and it was the impetus I needed to start the project.

The full gallery is here.

Ready to take on any project.

Ready to take on any project.

Right from the beginning I decided the MOC would have steering, boom lift, boom tilt, and boom extension. All the functions would be manual as is my current trent (do not fear, it will be over soon), and would be housed within the boom itself. I based the scale for the MOC on the length of the boom being 32 studs so I could use the full 32l axle.

The 32l axle was placed on the top of the boom, and would allow the sliding 8z gear to transmit rotation to the fork tilt throughout the full extension of the boom. At the end of the boom I added a mLA to adjust the tilt of the fork. It took a little working, but I eventually figured out how to adjust the tilt for every position in the lift. I then worked on the boom and the extension so it would be as stiff as possible through all points of the lift.

I then worked on the chassis and the cab. The chassis was rather basic, and after a couple of rebuilds to get the steering right, it was done. I did have to do some revisions to have the boom/chassis interface more rigid. It turns out that when the boom was fully extended, the lift would sway a little too much. I then added a cab and the engine box on the right side. Here you can see the final project working.

The MOC worked well, and other than a slight sagging of the boom at full extension, I would not change a thing.

Happy Building.