Ngoc Nguyen

Since @Jim is back I wanna hear it from the boss himself

This has nothing to do with my entry but I'm just raising it in case someone might wonder the same thing in the future. Can the model be driven by other kinds of wheels in addition to the required 49.5 tires? For example, this thing is technically driven by 49.5 tires too.

Anyway, here's some food for Technic thought, chicken soup for gearhead soul! The front half and the rear half are separate modules. Each module has an interface of 6 pin holes. Between the two modules exists 7x7x3 (or 7x7x4 depending on your perspective) space. Inside that space is a mechanism that shifts between counter steering and crab steering. How does the mechanism work? (Of course there are axles going through the pin holes but I already hid them all away, because the lengths are clues as well) If you're desperate, the answer is only 5 EUR away.

Thanks a lot!

Unfortunately I dont have much interest in it. The original model doesn't have many interesting functions by itself, and I can't think of something interesting to add to it.

Thanks a lot!

I think the brick built P1 logo is a part of the set. It's a display turntable.

Already appeared in Liebherr crane.

It's not that complicated

Another contest idea: Technic Xmas. Build a vehicle or contraption related to Christmas.

Thanks a lot for the help. Since my questions are about parts I thought it's appropriate to post them in a thread about parts, no? Also the mini LAs are for the compact backhoe.

Does anyone have a Studio file of a mini LA in which the cylinder is a separate part? I need my mini LA to have flexible lengths.

A compact backhoe mostly works inside a city so occasionally it has a trailer that carries different tools that the backhoe can swap around for.

@Jim @Milan My backhoe uses 4 wheels while the rules allow 6 wheels maximum, so can I give my backhoe a 2-wheel trailer?

I did explore that direction but settled with the current one, because the excavator arm is 3 stud thick in the base, which means when it rotates 90 degree to one side there must also be a vertical 3 stud gap. In other words there must be one row of unoccupied stud behind the row with the pivot point. It looks like this. From: O x x x to: x x O x

The key thing about a compact backhoe is, well, compactness. That means it needs to be able to slide and fold the excavator arm neatly. The 49.5 tire scale is the only scale at which these two features can be realistically achieved, so they are must-haves in my model. And I managed to replicate it at least on Studio. I'm not sure whether the scissor linkage sliding mechanism will actually work because I haven't built with real pieces yet, but based on what I experienced in my Reach Stacker it doesn't really work smoothly. So I replaced with it with a simpler and more compact mechanism. Compactness is the key.

There's another detail that I managed to replicate but forgot to mention. It's very trivial, but it increases the realism of the model. Rough Terrain Cranes usually have high ground clearance because they need to travel in rough terrains. The clearance is visible in the gap from the ground to the chassis between the wheels. The gap is like a half of the height of the wheel. In my model. I also tried to keep that clearance in my model. It is obviously impossible to have that clearance right at the axles due to the differentials, and at the outriggers as well, but I wanna keep the clearance in the space between the wheels. That means less space for the steering mode mechanism, which compounds the difficulty in designing the crab steering and the mode switch. But I succeeded in the end. You can see the 3 stud clearance between the two axles.

Spare pieces of after main model only.

Contest Idea: Build something from spare pieces of several sets. Bricklink has a list of spare parts for all sets. Must post inventory for cross check. As we may all know there are no long liftarms or connectors among spare parts. This idea is truly diabolical lol.

How exactly is the winch connected to the surrounding parts? And how is the chain fixed into the drum?

I've never said it's well kept Yeah the red bush is supposed to be the indicator of the steering mode. If it's in the left position, the steering mode is counter steering. If it's in the right position, the steering mode is crab steering. You change the steering mode by turning the 1x2 axle connector in red in front of the 3x3 biscuit liftarm. And the bush moves back and forth between those two positions when you rotate the red connector.

I still dont understand where or what exactly you're referring to. Can you highlight or circle that part?

Now!

I'd like to keep it as well as the whole steering mechanism a secret for a while But it's not hard to figure out. The inventory is on Rebrickable, and in the list there is only one part that is available only starting from this year. I think that's a rendering error. I just checked the model file and the image file, but there's no overlapping of anything. Thanks a lot for the compliments!