Ngoc Nguyen

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!

What do you mean

I want a contest about household appliances. Something like a PF standing fan.

There is one already.

I don't have a good photo taking device or a white background so I used to book a photographer to handle the photos and the PNG files.

CONCEPTION 42082 didn't really appear in my to-do MOCs until I saw the model by Akassin. It looks cool, but there are parts of it that I don't really like. Some parts like the mirrors are too flimsy by Lego standards, the undercarriage doesn't seem to be structurally sound, and the inclusion of the bidirectional gearboxes doesn't really make sense to me, among other things. My approach is that a model should be properly braced and stabilized, and there should be some adaptation regarding the scales. In other words, the features should fit the scale, and some features might work only in one scale and not another. To me, the bidirectional gearboxes work best when the model is motorized. If the model is not motorized, they only take up spaces that could have been used for other features. I think I can do a better job, so I decided to give it a try. I would like to clarify that the statements above are only my personal preferences and approaches and are in no way criticisms of Akassin's model. On the contrary, I give credits to his model, because I developed mine based on the scale and some features set by that model. I don't have access to the Studio file of his model, but I was able to work backwards some features based on photos and started working on top of it. It is always easier to improve upon some existing thing than to develop that thing from scratch, and I'm standing on the shoulders of someone to build my creation. UNDERCARRIAGE DEVELOPMENT The first thing I did is to get rid of the 2 bidrectional switches in the middle, and make the functions manual through direct drive. In the original model, there are four functions: outriggers, superstructure rotation, 4 wheel steering, 4 wheel drive. For four wheel steering and four wheel drive, I use the universal joints and the Ford Mustang rims, so that there is space for the U joints and the pivoting points. That's why the rims can only be in metallic gray and not red. The superstructure rotation is driven directly through the red axle connector and a worm gear meshed with a 20z gear. The outriggers are driven by one knob in the back. It drives one long drivetrain that has worm gears in the back and the front. In the original model, the switch for the outriggers is on the other side, next to the stairs. But to me it's more intuitive when the knob rotates in the same direction as the function that it controls. Therefore, I put the drive train for the outriggers to the back and makes it controllable through a black 12z gear. At this point, I encountered a problem. I had an unused right side where the control for the outriggers is set up in the original model, and a relatively empty space of 7 x 7 x 3 modules in the middle. The space is not completely empty, as there are 3 drivetrains run through it: steering axle, drive axle, outriggers axle. Regardless, the space can definitely be used for something more interesting. And in the end, I did come up with something! What is that new thing? Stay tuned to find out. And it's not just for the suspense. I was stuck on this extra thing for a very long time, so I worked on the superstructure in the mean time. SUPERSTRUCTURE DEVELOPMENT + EXTRA FUNCTION NUMBER 1 I also got rid of the 3 switches and the mode switch in the superstructure. I also use a single linear actuator instead of two mini LAs, because a single thick cylinder resembles the set up in the real crane, and using two mini LAs take up more space than needed. Since there is more space in the back, something else could be added in addition to the original 3 functions in the superstructure: winch, crane lift, crane extension. Not to mention, since the functions are all direct drive, there will be 3 knobs for 3 functions. Two knobs on one side, and one knob on the other side. That's not symmetrical. I prefer symmetrical structures. So I did some researches into what else can be added to the crane, and what I got was: A tiltable cabin! Squeezing that function into such a tight space is not easy, but I finally did it. Originally I wanted the function to work on a worm gear, but there is no space, so in the end it uses a simple linkage and the cabin is kept in place due to friction. EXTRA FUNCTION NUMBER 2 Sooner or later I'd have to confront the inevitable problem: What addition function should I put into the undercarriage? I know it's not anything significant, and the model works fine with the four functions, but it didn't feel right. I wanted to get to the furthest limit of what can be squeezed in that 7x7x3 area. My first thought was another steering mode or two. Since the turning angle is already small, front wheel steering only doesn't increase the value of the model. Not to mention, front wheel steering isn't as simple as it sounds. In reality, it's actually front wheel steering + steering lock for the rear axle, because you wouldnt want the rear axle to steer by itself while the front axle move. Therefore I decided to do crab steering only. The linkage solution in the mini 42054 doesn't work, so I have to design something based on axle and gears. The idea is that the drive axle will be connected directly to the front axle, while it will be connected to the steer axle of the rear axle through a gearbox. I tried using the conventional gearbox switches, but it also has problems. One switch actually has 3 states, while I only need two states when the driving ring is engaged at either end. In the neutral state it's basically a front axle steering only and with an unlocked rear axle. So I tried to use the orange wave selector, so that when one driving ring disengages from one steering mode, the other driving ring will engage in the other steering mode right away, and there's no neutral state. It all worked out perfectly. On Studio at least... When I built it with real bricks, the system doesn't work. When I turn the knob, the rear axle doesnt steer because of the cumulative slack of all the gears... At this point I gave up on the crab steering mode. I decided to put a hand brake like the one in the Iveco Tipper that I worked on earlier. There's a switch on the drive train, one end is blocked, the other end meshes with a gear that is fixed. It works, but it feels like a cop out. I settled on that option, but I still feel uneasy with it. It was not until last month that I went back to work on the undercarriage again, and made one last try with a certain new piece available only recently. And the crab steering FINALLY WORKED! And that wraps up the development story of this model! FUNCTION SHOWCASE Functions: - Four wheel drive - Four wheel steering - V-8 engine - Outriggers - Superstructure rotation - Crane arm lift - Crane arm extension - Winch movement - Winch lock Details: - Ladder from both sides - Side compartment with a box for tools - Mirrors in undercarriage and superstructure - Outrigger pads - Oil filter - Counterweight - Openable cabin door - Fire extinguisher - Max height 58cm And of course, since this is a crane, there has to be a max height flex. Instruction available at Rebrickable: https://rebrickable.com/mocs/MOC-187137/nguyengiangoc/mini-42082-rough-terrain-crane/#details P.S: This model has been planned to be released around this time, and the fact that there is TC27 going on is purely coincidental. I wasn't aware that TC27 will be around the 49.5 tyre. I decided not to use this model as a submission because that would be not fair and not fun. It's not fair because it took me 6 months to develop this, while TC27 only allows 3 months, and I already teased some parts of this in my Technic corner already. It's also not fun because the real fun is in solving the design challenges and squeezing things into constraints, while this model is a solved problem already, and as the boss said, contest is about fun.

@Jim Can you help me with this please

It works perfectly, thanks a lot!

For context: I'm working on the hood for the Mini Zetros, and I wanna recreate the two bars/handles along the sides of the hood in the real vehicle. Part 2432 is too tall for the scale.

I'd say no planes. In other words, that idea doesn't really fly for me.

Just wait til someone submits a kinetic statue driven by rolling wheels!

It's OK I don't intend to use that project anyway. I have already gotten significant progress with the Compact Backhoe. I have another question regarding this. I usually design function sheets for my creations, like this one. To save time and cost I use rendered photos. For the contest I will build a physical model, of course. But am I allowed to use rendered photos in the photos of the entry? Or at least can I use rendered photos for the photos showing the functions only, while still using photos of the real model for full body shots?

What about the projects that I only showed parts of in public before? Like in my Technic corner I showed a cabin of something but I never showed that whole thing.

The antitstuds must be next to each other.

Is there any part or combination of parts that creates a 2 module long handle bar with two negative stud holders? Like this part but only 2 studs long.

I thought that piece was discontinued even.

Another Technic "reveal"! https://www.instagram.com/p/C8WtjwPIii8/

Those who follow my Technic corner will know that I have a particular liking for shrinking model. And for my next act, I'm gonna shrink... my own model! Last summer I created this half-backhoe out of 42157. I've always meant to go back to it and build the excavator arm but I haven't had the chance. Not to mention, at that scale it is hard to make a stable and structurally sound sliding mechanism, as it will needs quite a lot of bracing. But for the smaller model it might be feasible. The sliding mechanism is achieved through a scissor linkage that I developed for the sliding cabin in the Reach Stacker in the Container Play Set MOC.

I predict that one day TLG will release a 3 stud or 5 stud gear rack that's 2 stud tall, like the 1x14 gear rack. That part will allows building straight racks in any length. Perhaps it will appear in a mobile crane set. Currently the only way to extend a gear rack is to use system bricks with system racks.

Why maximum six and not maximum eight :( Also can I use one of my works in progress for the contest?

Those tyres and pointy shape make the model look like a Tesla Cybetruck.

This year's supercar is coming in October.

Soon.

Is it safe to assume that only new parts are missing?

How do you know if it's complete or not?