Milan

This reminds me on Flash Gordon cartoon and the part when they steal the Moles Drill-Vehicle, so they can drill their way into the Mings castle. Great!

Wall E has finally a friend in the contest! :)

It is very late, but cant you use your phone's camera and upload it directly?

Wait for me....around 100 hours here. Great entry, too bad we did not see your monster truck,

So sad, and so "life like" if that sounds appropriate :)

Just when you think that you cant put more chrome on the bike...you prove you can. Great build!

Beautiful man. You even got my sub on YT! Almost 300!

I found pictures where lr634 has bucket very similar to Volvos in term of shape and top net part. Great if you will build the same machine :) Cant wait! Ohhh, nobody likes my expensive trans light windows :( And I work so hard to collect parts and build them :) Thanks for your praise, man :) Actually I have a plan to make them with a help, but for pneumatic version, when long cylinders get online! I will take the chocolate anyway. If I would take flowers, too, I would feel a bit weird :)

More or less, bucket was starting point for scaling down the model. So it fits, according to blueprints. Thanks! There are three loaders now in the contest, if I calculated correctly.

Thanks Leocorno! Alasdair: Yeah, that bucket would be perfect for that, but I will leave that for pneumatic version :) Crane is near completing. I am saying that for the last two years, but I stopped the project to incorporate new brick built larger tires. Now it has proper tires for 1:13 scale :)

Ok Full presentation: Fully working 1:13 scale model of crawler loader Made to perfectly accomodate rules for this contest: Four functions controlled by 2 Receivers. Real machine: From Liebherr site: The crawler loader LR 634 Litronic features a comprehensive hydrostatic Liebherr travel drive. Constant power is provided to both tracks which are driven independently. The Litronic system for the LR 634 Litronic allows optimal control of the travel speed and all steering movements. Any required turning radius can be achieved with a simple hand movement, even turning on the spot. The robust Z-bar linkage with cast cross-pipe allows maximum bucket breakout forces and the low sill of the front windshield ensures optimum visibility of the working attachments. LEGO Model: Idea came as I love Liebherr machines, and this one looked quite nice to me. It is very curved in all directions, and it is mix between bulldozer and loader. It also has few optional attachments, and most importantly, real machine is built to have four functions. Chassis: Chassis is built according to drawing of the real machine's chassis. Chassis also incorporate 4 small turntables for connecting tracks and drive sprocket wheel to itself. Those turntables prevent sprocket drive wheels and tracks to tore them self out of the chassis, while they allow infinite rotating. Drive: For the drive I used two XL Motors, geared 3:1, with thick double bevel gears, and the drive is virtually indestructible. The whole drive module is boxed in technic bricks, and braced with all sides to many points. Tracks: As I have somehow little experience with big tracked vehicles, I wanted to build this machine to be as strong as possible, in fact so strong that tracks and drive sprocket could not be removed without precise removing few key axles. That is especially important for tracks, as they are different than ones on excavators. Tracks on this loader are connected on two points to the chassis, but none of them is rigid connection. First connection is at the back, where the tracks rotate around the turntable bearings. Second connection is at the front, where the tracks are connected to each other and to the chassis via ball bearing equalizer bar. For this, I used setup bellow: Machines unique tracks attachment points creates weaknesses on tracks, especially when there is more wight on the chassis. To prevent this, I have added one more bar that connects tracks at the back, but also allows them to freely rotate. I am most proud on this solution. No matter how much weight is on the chassis, the tracks stays parallel to each other. Tracks are build with bricks and plates, and they are six studs wide. There is really very little empty space left inside them. Also, to make driving more smooth, both front sprockets have tensioners. Suspension: Using arrangement described above, the machine has real pendular suspension, which allows it to drive over obstacle with one track, while other remains flat on the ground. On my model, I used the tightest and strongest ball bearing possible, and they work perfect. Tiny slack in the small turntables perfectly allow for the tracks to move slight laterally when one track is in extreme top or bottom position. Loader arm: Modeled to look accurate, not for strength. It can carry itself and the bucket and some load. Not made to be heavy duty. Z Bar kinematic allowed for fine tuning to achieve full range of big Linear Actuator movement. I managed to achieve full range of bucket movement in any position, and good range of arm movement. Also, in this configuration, the bucket has vertical lift, which means that, while lowered or risen, bucket stays always in the same angle as it was in before the lowering/rising. Normal loaders usually have radial lift, where bucket lose its original angle. Loader arm is connected to the frame via 15L liftarm that runs whole height of the chassis and "nose" section, and it has 10 supporting points, making it impossible to bend or break. Arm is powered by 2 M Motors, driven directly to LA's via 4 universal Joints in total. Tool Boxes-Cabine platform: The loader has two small tool boxes at the sides, and one big storage area beneath the cab. It is very sturdy as it has to carry 1 kg cabine. It has studs facing in 3 different directions, but still, not a single stud visible. Cabine: Cabine is most detailed part, and most noticeable. It is white outside, and light blush gray on the inside. It has fully detailed interior, which is built according to the interior of the real machine. Also, it has tiles floor, with grill tiles to prevent slippage. Most noticeable feature of the cab is "glass" which is built from really lot of transparent light blue plates. It is curved to achieve organic flow with the cabine, ans I really like it. Engine tower: Made with tiles and plates in SNOT. It houses 2 Receivers and Battery box. It has opening panels from both sides, which allos for turning the battery on and off. Stickers: I used stickers custom made to fit the model. I made them on my computer and printed them in a local printing firm on transparent sticky foil. There are around 18 stickers on a model. I think they really add a nice touch. Attachments: Main attachment for this machine is the Ripper. It is operated via two big Linear Actuators. In this version, they are operated manually. Model performance: Model performs beyond my expectations. It is very densely built and accordingly, very heavy, nearly 4 kilograms, and it showed on tracks. They are extremely strong, but the problem is that they sag outwards, and away from each other, due to weight of the loader. After few days perfect solution came, and I installed that second self balance rod in a very elegant way that kept tracks perfectly straight and perfectly parallel to each other. During filming the video, outside was still a snow, and I was afraid because all of the water. But i found great spot with both dry snow and clean tarmac to make the movie. Model performed excellent, steered great, and pendular suspension really worked great due to heavy weight. Top speed is ok, it has a lot of power, and due to use of double bevel gears that were placed in line, and therefore their connection in the strongest possible, nothing never cracked. When the model face the obstacle, it either roll over it, or the tracks are spinning in place. This loader is one of my favorite mocs so far, and I intend to keep it built and to upgrade it to the new pneumatics when they arrive, and make them RC with LEGO servo motors. VIDEO: More info and photos at: http://www.limitless...err-lr-634.html PS. This is my new YouTube channel, so if you like this and would like to see more creations like this, please consider subscribing. Thanks!

Very unique! At first I was wondering what is that! :) There was some big entries, but this is by far the biggest!

25. Liebherr LR 634 Functions: XL Motor for left track XL Motor for right track 2 M Motors for raising/lowering the arm M Motor for operating bucket Manual functions: 2 LA's operating Ripper Openable doors, tool boxes and engine tower panels Adjustable seat in the cabin Adjustable suspension-lowering/rising at the front 2 positions Features: Pendular suspension via self balancing equalizer bar. Small turntables used as as indestructible bearings for tracks ans drive sprocket wheels Support rod that keeps tracks parallel to each other no matter the weight aplied Front sprockets tensioners VIDEO: Main topic

Welcome to EB!

Hi and welcome!

:)

Yeah, it is not the strongest ripper in the contest, but as a manual function, it does not really has to be :) Thanks!

Thanks Tommy, Askan and OG! Hope you will be pleased with the video :)

Ok, machine is finished. At the moment I am editing the video, and it should be online tomorrow morning. Quick facts: - 1:13 scale, my most accurate replica - 3.8 Kg - 4 functions - 6 openable doors - Some cool techniques. - Lots! of rebuilt to achieve full satisfaction. Full write up and video tomorrow morning. This is the real machine:

I knew this would look awesome at the end! Great work! Waiting for the video. This and big red Forklift are probably in the top 3.

Dimensions are important for lego models:) Small entry can be complex, but big entry has to be stronger and better braced...not always easy to do.

Certainly unique entry, and a lot of functions! Very nice looking, too.

Tnx for understanding my point. I know you will make the model even better when you add all the function, and I am really looking forward to that!

Or put it into the signature.

It has very angry-looking front part :) Awesome car and gearbox!