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It took me a few closer looks to understand that those grey ones are actually tiles (no studs on top) stacked together, and only connected on one end, and the other end is left free for sliding, right? That's really like in reality, ingenious! What did you use to hold them together on the other end? Is that a rubber band or some other plastic thingy? Great accumulation of improvement then, really admirable meticulousness!

It's beautifully built (and huge), and the functions are also great. I really like the complexity of the shooting mechanism, you must have spent some time getting that realistic, even ejecting the shell cases! Do the leaf springs rely on flexibility of plates?

Hi everyone, I have finished my Willys Jeep alternate of the Land Rover set, so I'd like to summarize the final model here. Features: - Live axle suspension with imitated leaf springs on both axles. It uses one shock absorber per wheel, also positioned realistically. I also tried to construct the core frame as is in the real life car. - Manual 4-speed gearbox in a classic H-shape. Additionally, there is a Hi / Lo gear switch and an RWD / 4WD switch, just like in the real car, and the positioning of those switches is as realistic as I could get with the limited space. The whole gearbox is in the middle of the chassis. - Working inline 4-piston engine as in reality, I tried to add engine details modelled after the real engine. - Functional steering wheel and also HOG steering in the back (which had to pass through the gearbox). - Foldable windshield and opening hood with stander included. I managed to get the windshield folding joint similar to reality. - The interior is clean and I tried to get the shape of the seats as close to reality as I could, although the square and flat front seats were hard to reproduce with the available parts in that color. - Detachable roof, again, I tried to reproduce the shape of the tubing. - Extras: Jerry-can on the back, and of course the spare wheel. More details about the design process are given on Rebrickable. Here's a video showcasing the functions: And some renders and photos: Building instructions are available on Rebrickable. Feedback is welcome! Cheers!

@1974 Those are good references for what can go wrong with too much torque, however, I was wondering if the situation changes with the use of new differentials and portal hubs, that put the down-gearing and thus the high torque only to the very last sections of the drivetrain, so less load on axles. Furthermore, in my experience, the hub stalls the motors anyway, so it’s not really forcing them to move when the vehicle is stuck.

The question was not whether it's doable, of course it is, but whether TLG would do it in an official model, as there hasn't been an example for it, and we were wondering why.

Thanks, glad you like them! Yeah, I agree with you that you should wait for the Zetros to decide, I think it will be a bigger set, maybe better if you can only choose one, and hopefully the functions will be at least as good.

Thanks, yes the quad is quite popular, for being different and for the V-engine construction I guess.

Wow, that IS actually fun! Nice construction BTW. Does the original construction loose the top part easily?

I think it's not that hard to get to that piece count, it depends a lot on how the wheel size relates to the whole model and how much bodywork (and corresponding support structure) it has. 42099 has large wheels compared to its overall size, and has very little bodywork, hence the low part count. In contrast for example the Land Rover has the same smaller wheel size as the Zetros is supposed to have, and because of all the small parts required for the gearbox, suspension and internal structures and all its extensive and detailed bodywork it has around 2500 pieces. Sure, I can easily imagine wrongly placed differentials and messing up complicated gearboxes, but I think that's different from placing the motors the wrong way while hard coupling; they would probably be impossible to connect the other way round. Yeah, that one seems to be a pain point for many, including myself, but hopefully my Defender to Jeep fills some of the void :D

That's true, but I'd say it would backfire on the longer run to spread a lot of fake info, his channel could go down the drain easily. I have checked some other videos of him, and found something else that sounds interesting, but my german is quite rusty so someone with good german understanding could back it up. As far as I understand, he is saying that the Zetros was almost cancelled because the 6x6 version has military uses, and TLG have probably redesigned it to a 4x4 to have less resemblance and avoid protests against it. Did anyone hear something about that?

Just curious, how can you incorrectly assemble two motors to turn against each other (supposing that you are following official instructions)? For that, I think you'd have to completely alter the build to change the direction of rotation. At least I don't see an easy way to do it, but if there was, that would be helpful sometimes :)

Now that changes things quite a bit for sure, not totally surprised though.. I personally would really like the 3L + 1M motor setup, but I preferred the 6x6 over the 4x4. Would have meant more new wheels for us :) The M motor would be quite useful, but I hope they made it a bit more fitted for technic builds, the one that we know already does not have too many pin connections.

That could work, though I prefer if the joint is not floating in the air, with the flex point being close to something fixed. Let's see how the next tests go!

Thanks for the info, given this, now we have something interesting to speculate about. Either of two things should be true - for some reason in development, TLG did something that they have never done before (coupled two XL motors); could be because of speed regulation of PU motors - or there is some interesting gearing happening in there, like a differential, as Igor says A third option would be that the motors are not coupled but one drives the front wheels and the other the rear ones, but I highly doubt that it would be built this way (motors side by side) in that case, as that would asymmetrically distribute the load. What do you think? I'd say it's hard coupled, as it seems quite similar to this MOC of mine, which has hard coupled motors, and if I wanted to add a central differential, I'd build it differently:

Thanks, great to hear that! It depends on what you mean by "fake" and "traditional" :) If by traditional you mean the typical double wishbone suspension, then no, it's not traditional. This is a floating axle setup, like in the real Jeep. However, the leaf spring is not like in reality that it would actually bend, there are no good ways to build that from Lego as there are no stiff but still flexible parts. Instead, the Leaf spring is imitated by three sections joined in a flexible way (the two A-arms and the axle itself), and the suspension is provided in the middle by a regular spring, and not the "leaf", but nevertheless this imitated "leaf" has the function of keeping the axle in position. Or by fake, did you mean using a traditional spring?

Really good work on a machine I did not know existed before, thanks for showing it. I like the rear wheel steering mechanism, and the use of the shock absorbers to eliminate vibrations, that could become handy in other places as well!

Hmm, I see, I would have thought that at that angle and length, the change of length would be less than 1mm and would not interfere with the working of the shocks, but maybe I'm wrong. Anyway, I guessed that the reason why you did not use a CV joint is the wrong axle length. Maybe the middle part could be reworked to fit in a new type of CV joint with the 3L axle (if you can do away with the middle support hole for the axle right after the 16T grey gear). But I guess you may have other plans to fix it :)

Nice progress! Do you really need that adjustable length driveshaft? I think at that length, it does not change so much as the angle varies a bit, the long driveshaft results in a small difference in the angle as the suspension works, and the joints have enough slack to take it. If you built it with a fixed length driveshaft (just an axle between the two u-joints), it could not disconnect in that direction. Or have you tried that version already?

In general, I don't mind not having B models for larger (especially licensed sets), but in this case I somewhat agree that it would have been nice to have, since this model was used to showcase the PU system. I guess it was higher priority to push it out. Furthermore, the faster version is a bit difficult to achieve with those portal hubs optimized for crawling.. Possible, but the torque is mostly lost in all the up-and-down gearing.. Haha, I guess the base could be built using a turntable, but the suspension parts are not so useful for that, would be just in the way, and then what do you put on top of it? Not much parts for anything genuine, maybe a forklift, but those aren't usually articulated. Could have one XL motor for drive, 1L for steering, and the other XL for the lift, but you won't be able to control that with the stock Control+ App. I wanted to keep that for ease of use.

Thanks, agreed, optional accessories are good because then everyone can find how they like it. Before seeing MOCs around here and on Rebrickable, I did not think about that, was more function focused, but I guess I will aim to include more of those in my builds, along with fine details such as engine builds and interiors. I actually find those interesting to replicate and the end result is more realistic.

Hi, I think 42099 is a nice starter RC set of the PU line, so I set out to test what else can be brought out of all its parts. I'd like to share with you my set of 5 alternate builds from it. It has been a great exercise for experimenting with different options for suspensions, drivetrains and bodyworks, testing the versatility of this medium-sized set. In the end, all of the alternate models came out with quite different shapes, suspension techniques and motor/gearing setups, and I think I even managed to use those large turntables in some interesting ways. During my builds, I found that the set has a good array of structural elements, of course good drivetrain components, but is a bit limited on gears, axles and body panels. Nevertheless, once you get used to it, more configurations are possible than you would think :) Here are my builds in chronological order. Much more design details and images of each are accessible on the link behind each name. Here I shortly summarize the features and the differentiating factors of them.1) JeepyThis model was inspired by the release of the Jeep Wrangler set and its pendular suspension using the small turntables. - Pendular suspension using large turntables, both front and rear- 4WD slow drivetrain for good climbing, separate front and rear drive- Jeep-like exterior, focusing on the shape of the hood and the grill, plus the roll-cage 2) BuggyInspired by the release of the RC Buggy set, with this model the goal was to test how fast the the two XL motors can be geared up, along with creating a slick bodywork. - Independent long travel suspension with longer swing-arms both front and rear, high ground clearance- Fast up-geared rear wheel drive, independent for left and right wheel without differential- Positive caster angle at the front axle- Light-weight curvy bodywork, custom built seat 3) BeastyThis model aimed to test the possibility of building a live axle rear suspension using the large turntable, along with coupled motors for a stronger drivetrain. - Live axle rear suspension with push-rods for extreme articulation, independent front suspension- 4WD drivetrain with coupled motors driving both front and rear axles, adjustable gearing- Rough exterior, minimalistic interior 4) QuadroThe goal of this model was to build something other than a car, and to experiment with an unconventional motor setup. - Independent front suspension with positive caster angle, trailing arm rear suspension- V-engine built out of the joined drive motors, rear wheel drive- Functional steering rod- Chubby bulldog-like quad shape, bullbar 5) TrophyWith this model, I wanted to push the live axle possibilities further, creating long soft travel using only the short springs, and to find a sweet-spot in the up-gearing of the motors. At the same time aiming to create a larger-looking bodywork with the limited array of panels. - Long soft travel live axle rear suspension, independent front suspension- Rear wheel drive with motors built into the rear axle, independent left and right drivetrain without differential, faster gearing- Trophy-truck like exterior with curved front and long tail, imitated spare wheel All models can be controlled with the stock Control+ App, and the batteries can either be directly accessed from the bottom, or can be removed after detaching a few panels. All models are available separately or in a 5-in-1 pack on Rebrickable. I hope this makes you value your 42099 sets even more :) Let me know what you think!

Oh, so you mean they would simply be too strong together? I did not think of that as a drawback.. :) Maybe that’s the reason why this is not for small kids, isn’t this going to be an 18+ set?

Hmm, that's an interesting point, are you assuming that hard coupling two XL motors to drive a central shaft is not a robust enough solution? Is it a problem with possibly different motor speeds? Could that problem be eliminated by the fact that the PU motors are speed regulated and two motors can be run synchronously with a single command? Or is the problem mechanical, such as a central shaft might not distribute the load equally between the front 2 and the rear 4 wheels?

Not sure I understand how you got to this conclusion. We can see the XL motor on the side, and the two sides are quite probably symmetric, so that makes two XLs, which are most probably for driving, since using one of them for steering would be very impractical (bad position and XLs are less precise for servo operation anyway). The steering (L) motor is probably in the middle so it's natural that it's not visible, and if by any chance there's another (L) motor for example for a gearbox, then most probably that's also in the middle, not visible again. So I'd say at least 3, at most 4 motors. I agree here, was actually surprised how far you can get with a single XL motor and a fake rear suspension.. And I don't understand why people are bashing the off-road capabilities of 42070, I think it was not really focused on that, and the name is probably just a marketing thing. For me the open questions about the Zetros are the front suspension and whether there's something new hidden inside. Either an RC gearbox or some new electronics component, like a better battery box (smaller and/or rechargeable). These are the possibilities that I find realistic. But I already like the 6 smaller tractor wheels and that it'd probably have 6 portal hubs. One last thing I don't understand is why people stick with the supposed price, I think that's fake with a much higher chance than the leaked image..

That’s the hand of god steering, in case you want to pay with it, but you can take that out for displaying. Besides, the steering wheel is also functional.