Appie

Good point. I'll see what I can do to extend the arms backwards while maintaining the angle over the tracks in lowered position (the LA following the same line as the tracks pleases me esthetically). I think due to the motors and gears, I won't be able to have the "dead space" (aka empty space above the bonnet) at the rear behind the cab and the mounting points of the arms like most real ones do.

Thanks all. Current situation: Finished the forklift setup and started working a bit on the bodywork. The grey axle sticking out on top will function as a way to turn on the hub so I can place a chair above the actual hub button. Next 2 things on agenda will be the loader attachment and trying to improve the position of the motor that handles the lifting which is currently sitting asymmetrical at the rear of the unit. At first I thought I would cover that part with bodywork anyway, but now I am not so sure.

I saw this contest yesterday and as it happens I just started working on a MOC that fits. It will have 4 motors: 2 for drive, 1 for lift and 1 for tilt. The colour scheme plan so far is white with yellow. Above the hub will be the cabine. I am also planning to make attachments that are easy to switch: bucket, forklift and blade (currently testing the forklift in the picture), so the little fella will have more to do than just hauling dirt. Without attachments it's less than 4000 cubic studs, with the biggest attachment it will be about 6500 cubic studs.

Most if not all bluetooth controllers work afaik. Playstation controllers work and the latest (from the Series S/X) Xbox work, but also the cheap ones like from Ipega (I got one of those for like 20 bucks, works great).

Really nice progress. Looks great. For your Buwizz setup: perhaps try the Brickcontroller 2 app? It also works with Buwizz afaik and it has good calibration options for steering and gearbox switches.

That's a great start to a chassis. I like it. I need to remember this next time I build one of these vehicles to copy it

Thanks guys for the compliments about the little old MOC (as for the topic, sorry I made it go a little off topic with my MOC)

To answer the question if articulated steering is possible: yes 20140628_164701 by Appie NL, on Flickr Made this about 7 years ago for a contest here on Eurobricks, 60 pieces iirc. Still in my cabinet here

Great modern take on the set. Perhaps an idea to give the arms some linkage to the uprising mechanism of the robot so you don't have to manually pull them out before transforming? I like that they are poseable, but them not moving outwards on their own just feels a little weird to me.

Due to other things that required my attention, I didn't even start besides just some ideas brewing. I was planning to build something this weekend and see how far I would get before it's locked on monday, but a week or 2 extension might be nice. Assuming I'd even be able to get the stuff I want working :)

Yup, all of them got 4 motors. Drive, steer, lift and tilt. It's quite fun little compact packages this way. It was the best solution to get the required height (minimum is 20 studs of lift). Alternatives didn't get the required height or were more bulky. Barman and Mahj use a similar boom (Mahj's design) and Jovlem and me use a similar boom (I copied his, but modified it a little).

I was thinking of perhaps using 2 city hubs and put them in the legs. Would solve the weight problem for the most of it when transforming. That transformer from Nico71 is quite a benchmark I must say. Amazing work.

No worries, I thought you meant that you would rather see the regular type of trailers. Thanks for the compliment

Such a mechanism is actually in place on our ramps after this video, but thanks for the suggestion. Not sure I fully understand this comment, but to be clear: Out of all the people who build a trailer so far, I am the only one who made a steering mechanism on the trailer. The others (like all in the video) have a "simple regular trailer". I added the feature mostly because it seems to compensate my crappy trailer steering skills

I was at this event where the video was made and was inspired to also make the complete set. I am afraid I don't have a video at the moment, since the phone I am using normally for video's is also the one I need to run the brickcontroller 2 app. A video might come at some point, but for now the pictures will have to do. 20211121_125112 by Appie NL, on Flickr 20211121_125147 by Appie NL, on Flickr 20211121_124129 by Appie NL, on Flickr 20211121_124334 by Appie NL, on Flickr And a couple of detail shots: 20211121_124630 by Appie NL, on Flickr 20211121_124653 by Appie NL, on Flickr 20211121_124718 by Appie NL, on Flickr 20211121_124819 by Appie NL, on Flickr 20211121_123926 by Appie NL, on Flickr 20211121_123952 by Appie NL, on Flickr 20211121_124023 by Appie NL, on Flickr 20211121_125313 by Appie NL, on Flickr 20211121_125348 by Appie NL, on Flickr My trailer also has counter steering on both axles. If I lower the struts, it straightens itself out which makes hooking the trailer to the truck easier Here's a video how it works:

In my defense: it is secondary in my plan. I don't want to drag this out, Jim/Eurobricks doesn't want it in the rules and that's the end of it, but felt a need to at least mention this.

Oh yeah, I forgot about that glorious machine. Not sure I would use it myself, since that mechanism takes alot of space, not a very good starting point when I wanted to keep it small.

Thanks for the suggestion, but I need 4 functions from those 2 motors though, not just 3. And combining them doesn't really work since they have to do very specific things without affecting the other 2 functions. But it is fine, I'll see what I do.

Okido, no problem. Good to have it clear.

Ok, here's the plan I have: 2 motors and a gearbox. Gearbox switch left: drive and steer Gearbox switch right: transformation and walking. Since steering manual is an option as you said it was, we could consider the "transformation and walking" state the default. Remote controlled core functionality: check. The other state would be a bonus that when if I flip the switch, the drive and steer would be remote controlled too instead of just manual. I could make it bigger with a Technic hub and add a 3rd motor for the transformation and have the transformation switch the functions, but I want to build it smaller if the rules allow it

The core functionality would be remotely controlled in my plan. Think of it as the gearbox of the 8043. Except where that has an extra motor to switch between 3 functions, I would have only that switch be manual. 2 functions on one side and 2 on the other. That scenario still a no-go?

Hmmm, I had an idea to use 2 motors with a manual flip between 4 functions, one of which will be the transformation of course. A third motor means I can't use the small PUp hub with only 2 ports and have to use the big bulky Control+ hub, which also means additional weight. Any chance to reconsider? If not, all good of course.

Looking forward to seeing more of this. I remember similar challenges when I made my F1 car in Red Bull colours. Iirc at one point I had to adjust the rear suspension since it sagged a little too much under the weight of the car (1,7kg). Luckily had space for an easy fix: change a 3L liftarm to 4ish (2x4 L-liftarm). My suspension geometry was slightly different from yours and I think yours can handle more weight, which the bodywork, v12 and gearbox will probably need.

I use this app with 1 of my MOCs with this hub and noticed similar issues trying to calibrate a medium lineair motor (# 88008, not the basic PUp M-motor, but the 6x4 studs on top which afaik can be used as a servo, unlike the basic M-motor). Until now I thought it was in the motor not working with the software, but perhaps it's something with the hub, since you have the same issue with a L-motor. I could test it later with Technic hub like you, but what I did notice with the M-motor is that it can do angles perfectly when I set the motor as "steppermotor" instead of as a "servo motor" in the brickcontroller 2 app settings. Once I set it as a servo it would turn further to the right than the left for example (similar to your video). Maybe it's a little bug in imurvai's great software or there's another issue which he simply can't fix due to Lego's stuff? So far I settled on using the "steppermotor" setting.

As suggested before: the tractor tires from the Jeep for the front and Zetros for the rear not an option? I understand the Zetros would be a little hard at this time since it's just released, but was just wondering if you considered them at some point in the future. I personallly don't mind the old wheels, but I think those new ones would work pretty well on this model.