keymaker

Yes, that is why I love those new small rims. This one stud deeper connecting point does the job.

Each axle has own drive shaft connected directly to axle for maximum efficiency. And all of them are connected to axles at an angle for better GC and ramp angle. Rear axles are connected via upper common links and single bottom links. The last axle also has a panhard rod. I need to to prepare render of internals, then it will be better visible. I decided to use cardans and 5,5 stud axle to have better angle and to be sure, that no matter what, I do not lose the wheel even in rough terrain. It doesn't look good, but when you play outside, it doesn't really matter. And you can always use 3 studs axles for better look (I did it for photos and indoor part of the video)

Hi, I hesitated if I even should post this MOC here since it is so simple but at the end here I am. I created this truck mostly to have some fun outdoors. It has minimal amount of features and its main goal is to drive over not so pleasant terrain, like sand, mud, snow and even quite deep water. And I can do that without fears, that drivetrain will jamm, gears will skip, motors will get wet and at the end I won't have desire to clean all this mess up. I also very like the closing mechanism of "differentials" covers. It is simple, effective, works like a charm and has satisfying click when closing. This Truck is also testing ground for a couple of solutions I wanted to try out, like drive shafts connected to the axles at the angle, steering controlled by rod or way of suspension for both front and rear axles. Nevertheless please enjoy the video, use the instruction and check some details below if you want to know more. Instructions: https://rebrickable.com/mocs/MOC-136120/keymaker/trial-truck-6x6-rc/#details Some details and main functions: dimensions LxWxH: 37,5x13x15cm weight: 1132g 6x6 drive (3xPF L motors) steering (PF servo) suspension on all axles completely secure bottom of the truck with panels easy access to all "differentials" via openable covers Couple of highlights why this truck can be fun to build and to play with: Drivetrain - it is very solid, so you won't hear skipping gears, if wheels aren't spinning, then you either broke some part or stalled motors. It is also super easy to use different gear ratio or different number (1/2/3), type (M/L/XL) or even technology of motors (PF/C+). What is more, removing all electronics takes only couple of minutes and truck is ready to taking the shower to clean all evidence of you off-road madness Construction - it is very rigid and solid, you can lift it up by almost any part of the frame and body Off-Road Design - all gears are protected so you don't have to be afraid that they will jamm due to sand, mud, snow, stones etc. And even if something get inside "differentials", it is super easy to open covers and clean this up. Last but definitely not the least - ability to drive through deep water - UP TO 8CM! It over half of the height of the truck. 8cm of water and your electronics is still safe. Internals of the truck: P.S. I know it is rather ugly, but it brings fun! :)

Don't be pessimistic, give us off-roaders a chance to try :D

Oh yeah, this IS the missing gem in TLG collection. We have small one, we have big one, there is high time for the medium size version of such rim.

It looks great. I know all this parts are wishful thinking. I see that this small hub is probably not possible to crate simply because lack of space. There is no enough room there to have port for CV joint which would be in hub with ball connectors for swing and steering arms. There is simply no room for all of this. Maybe this is the reason that basically there are no parts for small, driven, steered and independent suspensions.

I have those parts in my hands at the moment, I know what I am talking about :) 3 studs steering arm just next to standard 30mm rim (56145 or 56904) will rub (and I am talking about "shallow side"). The same goes with new 30mm rim (42716) even with 1 stud distance used between rim and the part. But to be more clear, the part I proposed, without any offset to the rim, but with 3 studs long steering arm as you proposed - will rub. No question about it. The part you proposed, exactly as showed, with some offset, I think it is one stud there, will not rub when connected to the standard 30mm rim on shallow side. But the whole point, or at least very important aspect of such hub, is to have pivot point as close to the center of the rim as possible. You part, with unremovable offset, is killing this idea. Quite simply, the part which will move steering links will be in the front of the links, so lets say in that order: 1 line: axle, 2 line: steering links, 3 line: steering rack or whatever you wan to use to move steering links. Second thing is problem of distance of steering links to the diff or gears. The solution here is also simple - shorter steering links :) They ware mentioned here multiple times. I agree.

Well, no :) Options 2, 3 and 4 are for medium and big rims, where there is more support needed besides the axle - pins. And in this category there is I would say some usefull choice of already available parts with great Wheel Hub with Planetary Gear Reduction. And because of that I think there is no chance for such kind of new part in nearest feature (last option is great, but the same thing you can have with mentioned new wheel hub with some sort of small, new, and very usefull also in other places conector with tow ball holder - such parts were already mentioned here). The first option won't work neither with standard nor with new 30mm rims because of simple reason - steering arm will rub the rim. If you have those parts and rims in hand, check it, you will see. That is why this is my suggestion, great both for small sport and off-road cars:

Ah and I forgot. Those links would be beter having flat central part, just like present Technic Link 1 x 9.

I consider myself quite good in Studio, but I'm a completely noob in Part Designer so sorry for what I'm going to show you :D But I tested it with old and new 30mm rims and it would be a great part. For sports cars, you put it all way down into new 30mm rims and you have perfect pivot point and small range of motion (but it would be enough because sport cars don't need much). For off-road cars you are using old/standard 30mm rims or new 30mm rims but with one stud space between part and rim (you can use it for adding details like disk brakes). And in such case you have bigger range of movement, perfect for off-road.

It is a bit strange to me, because we all know and understand, that there is a limit how small lego parts can be to be useful. But still we have quite a choice of wheel hubs for bigger rims, where there is enough space to build own ones from available parts. But in case of small rims, like 30mm there is not much to do and we need to rely on available, specialized parts, which aren't many.

Yes, exactly. It would be a game changer when making small independent front suspension with driven wheels. Because to be honest, there is a gap in lego parts catalog when it comes to hubs for 30mm rims. I mean with drive. I think TLG is not interested with preparing a type of parts which are available and updated (even lately like new wheel hub 46490) for bigger rims.

Great threads @gyenesvi! In case of parts, most of the most desired parts are already mentioned here, so I won't repeat them. The only thing which comes to my mind is wheel hub, so imagine a hub, like this: but it has 3 studs and fits to 30mm rims, so a mix of (or eventually) and

Yeah... And without it if you want to build somehow reliable front driven axle, the solid (for example live) axle is what you are forced to use. It's pity we don't have access to some smaller technic parts with tow ball holder. Such small part could be used with various standard technic parts to create whatever size of suspension you need.

I would love to see some new element, which will allow to build some narrower double wishbone or just independent front suspension with drive. Because at the moment the narrowest independent suspension (with drive!) I can imagine can be build within 15 studs, which is far to much for small scale models. And even this I'm not sure because I didn't even try to do this due to part size limitation.

I agree that taking whatever torque we can from CV joints is a good thing to do. That is why I'm looking for opportunities to use new CV joints especially where torque is transferred to whole axle (I found out, that old CV joint/cardans are fine, when they need to drive only one wheel - 30mm rim, even with big tire with aggressive tread like 56mm tractor tires). Your model can have some weight due to brick build style, probably even more than my original KrAZ 255 which is below 1kg. Do you know already what will be the weight of the model? Based on simulation even?

It is great to see photos, can you tell why you decided to add 20T gear to the front and resigned from this part? After all, there is no more solid bracing like using one part to do that.

Have you built it in real life? Because this part is a great one, but it cannot be used with 30mm new rims, it doesn't fit and even with standard 30mm rims, when put right next to it, it rubs, so some spacer is needed, so pivot point is getting worse.

I will share my latest creation - a successor of my first publicly available MOC - KrAZ 255 ver. 2.0. It is focused more on the mechanical side rather than visual side and it shows, what can be done in small scale. It has(among many other things): - very good 3 studs ground clearance - suspension for all wheels - wheels driven by differentials (6x6 drive) - independent differential locks for front and rear axles (which are operated by levers located next to driver seat in the cabin) And all of those (and much more) are available at the same time with using of 30mm rims and standard for this scale 15 studs wide of the model. And I'm happy to say that squeezing all those (rather mutually exclusive) features weren't put in one model so far (or at least I didn't find such example despite my research).

There are a lot of things, related both with mechanics, designing and publishing MOCs online, so it is hard to list them all. But in my opinion I value the most knowledge and understanding I got related to suspension and drive train. And I have to say that having engineering background and scientific mind (in opposite to humanistic mind) helps a lot with understanding and using this knowledge in projects.

I really, really hope they won't use such solution. It is completely useless from RC point of view.

It would be so natural and even more appreciated! We have rims with good mounting points in small size (30mm) and also in big size (56mm). All I need is something like that for medium size rims (43.2mm).

You are right and I'm happy to be wrong. I didn't noticed the frame. In such case yes, it needs to be something new. And it is great news! Such parts like cardan/CV joints are always welcomed.

Or they just used standard CV joints and didn't care about misalignment since in such small difference and range of movement it won't be a problem.

2022 Ford GT (42154) looks very intresting, even as a model and not a part pack. But THE BATMAN – BATCYCLE (42155) can be nice part pack. The rest? Meh.