Lixander

First, the ”real” truck looks interesting and you completely nailed the look. Second, while there are not many functions, there are all motorized and pretty hard to make them work properly (from my point of view). So, yeah, good job! Keep it up ;))

New ”Skunkworks” model - Sprite EVO buggy. The model has detachable bodywork panels with the same system as the original Sprite buggy, rear-wheel drive trough the new yellow differential, independent suspension on all arms and, of course, a SkyRC brushless set-up with a 60A ESC and a 3300 KV (around 12T) motor gear ratio to around 6.20:1 (12-36t, 16-20t, 14-22t; I wished a bigger ratio, but this is all I could do at that moment). Apart from the bodywork connection system, the front is also took from the original buggy, but it is adapted, as it uses thicker and longer suspension arms and also longer steering arms. Moreover, some precaution measures had to be taken, so I used 4x metal U-joints and I will get a PTFE spray tomorrow. But in a few days I will should start to test the model properly fitted with the 120mm hobby tires mounted on 56 d. x 34 mm rims. P.S.: Sorry HorcikDesigns for derailing your brushless motor adapter post. 1500 KV is a little too low for almost any motor I think.......a quick search and there are mainly drone motors at that KV.

The Ruslan baja finally made it to the test bench. It had some errors in the design of several areas, such as the steering, the roof and the rear suspension, but I think I already solved them, despite I didn`t test the model for extended periods of time; in the next weeks I will try to go out with it and properly test the Ruslan. Thanks again to @Daniel-99 for letting, helping and encouraging me to remake his Eagle V2 for everyone! In the next month the Ruslan should be on Rebrickable. Also, if you feel lazy and don`t want to search the post where I mentioned the specs, here there are: - 2x buggy motors geared through 1x yellow differential (14 / 20; the other gearing is just for transmitting the power, as it has a gear ratio of 1:1), 1x PF servo and the possibility to install several light sets (around 3x sets in the front and 2x at rear); - easily detachable bodywork panels; - responsive suspension with high travel (the front can go over 3x 107 x 44 mm ”Tractor” tires and the rear over 2x 107 x 44 mm tires.......there are photos below) which in front is independent and at rear is a 4-link type, like in the real baja/ trophy-trucks; it uses 4x 9.5L extra-hard shocks and 2x soft 6.5L shocks.

I hope this helps somehow: I have the MouldKing ones from several sets and there are about the same stiffness, if not a little more rigid, but one of them has a manufacturing error which makes it pretty impossible to be compressed.

The Tortoise buggy will be scrapped, as I can`t finish it due to 2x faulty motors. Anyway, it waited over a month to be tested and now I find that 1x buggy motor is barely working due to chopped wire insultation and the other one stopped working after some time that it worked with the PF connector melted :(( I will see if I can borrow 2x buggy motors to properly finish this model. Until then, you can find the Studio files for the BuWizz 2.0 and 3.0 versions with the latest updates on my Bricksafe - https://bricksafe.com/pages/Lixander_A./tortoise-buggy/wip P.S.: The Tortoise buggy was scrapped

My bad 🥲 But still a great model! :)

Great work! I really like that you added a full interior and spring-locks to the doors.........but the chassis stands out to me more with that gearbox and 3x Geekservo`s (quite a handful of servos :)) ).

Welp, there are 2 ”safe” ways to go: 1. PU motors paired with a BuWizz 3.0 or a PU (Technic) hub 2. Geekservo paired with a custom control unit, as this is basically a small RC servo with a JST connector packed in a Lego Technic case The 3rd option is to look for a proportional PF replica, but you can never be too sure about them :/

I didn`t updated the W.I.P. ”workbench” for some time, so, here it goes..... 1st thing: The Vintage baja buggy - TC27 should have been on Rebrickable. But due to some circumstances, the Studio file of the model will be put on Brickshelf after I manage to update it. 2nd thing: As all of my hubs went dead and my last servo has problems, I ordered some new electronics, but it will take some time until they arrive :// So, until then, these are the models that are already built and that are waiting for a functional thing to finish them: Tortoise 4x4 buggy (compact 4x4 buggy with 4x buggy motors, 1x PF servo/ PU L motor/ Geekservo, 3x BuWizz 2.0/ 2x BuWizz 3.0/ 1x custom control unit, detachable bodywork and wing) Ford F-250 1972 (made for the RTXP 2024 Technic contest - Pick-up class which will be held by the Romanian LUG this autumn; it has 1x PF L motor, 1x PF servo/ PU L motor, 1x PF battery pack/ BuWizz 2.0 / BuWizz 3.0, interior with seats and fake steering-wheel, independent suspension in front and solid-axle type at rear; it can use 1x set of lights in the front) And the models that should be test-built in the near future: Baja buggy (functional Technic replica of the alternate 5893 Baja Buggy made by offroadcreations; it features 2x buggy motors for the rear wheel-drive, 1x PF servo, 1x BuWizz 2.0/ MK 4.0 and a detachable bodywork; 3x light sets can be installed - 3x studs for the front and 3x for the rear) S.RC Trophy-truck (medium-sized trophy-truck with 4x4 wheel-drive from 2x buggy motors, 1x Geekservo for steering, 1x custom control unit, detachable bodywork and space for 3x light sets - 5x studs for the front and 2x for the rear) Ruslan baja-truck (based on the Eagle V2 trophy-truck; it features 2x buggy motors, 1x servo-motor, (big) positive caster-angle, easily removable bodywork sides, realistic suspension - 4-links type at the rear and independent at the front and space for 5x light sets - 6x studs in the front and 5x at rear) Mars buggy (small buggy with 1x buggy motors for the rear wheel-drive with options for 3x gear ratios, 1x servo for steering, independent suspension at front and solid-axle type at rear and a semi-detachable body-work) Retro RC buggy (another small buggy with 2x buggy motors, 1x servo, but has space for 2 light sets - 2 studs in front and another 2x at rear and independent suspension on all wheels; it should weight around 800 g / 28 oz / 1.76 lbs with 2x BuWizz 2.0 or 2x CaDa/ MK hubs) And the 3rd thing: W.I.P.s that ended up in the trash bin and I don't remember to mention them before. Luckily, there is just one such W.I.P.: RC Trophy-truck MAXX (I don't know why, but every model I make that has ”MAXX” in the name ends up in the trash bin :// ; anyway...this thing should use the 3300 kV brushless motor set-up I have paired with a Geekservo, an unfinished detachable bodywork, a pretty large positive caster-angle and an independent suspension on all wheels; the problems that keep me away from building this are the transmission that would most likely end up shredded in the first minutes of the test-runs - if the teeth of the motor`s metal pinion meshed correctly with the ones of the new red 28t differential first, and also the drive-line itself, as not even the new CV joints could bare the torque and RPMs of such motors)

I see. Thanks for sharing! Also, one friend who wants to put 2x buggy motors on the 42124 "Off-road buggy" set got those adapters from AliExpress. The price and the quality are ok, as you said, but the wires were soldered incorrectly, so the motors were spinning when no command was given.

I managed to fit (theoretically) 3x BuWizz 2.0, but that is a pretty ”inaccessible” version, as 2x BuWizz 3.0 are far more common than 3x BuWizz 2.0, judging by the price. Anyway, I also did some tweaks on the rear and front assemblies: the motors on each frame are completely independent one to another now, as the motors were previously secured with a 8L axle with stop that passed trough the (slower) outputs closer to the edge. Now, each motor is secured with a 3L axle with stop. Moreover, 4x hard 6.5L shocks seem to be enough for the weight of the model without any hub, as the model has so about 1 kg / 37 oz / 2.20 lbs (with hubs, the weight should be around 1,5 kg / 53 oz / 3.30 lbs).

Looks too real.......great job!

Great model! Well done ;))

It's really nice, especially the green rebuild!

Vintage baja buggy Features: steering through 1x PF servo; it can be replaced with a Geekservo; 1x PF L motor geared up to 1.67 for the rear-wheel drive; it can reach around 8-9 km/h / 5-6 mph with 1x MK 4.0 hub and 1x MK black L motor; a front assembly with positive caster angle; a suspension with a fairly long travel trough 4x hard 6.5L shocks with independent type in front and solid-axle type at rear; for a more realistic suspension behavior, soft shocks should also work; a detachable bodywork.

I managed to get the right tires for the contest......so here are the final photos.

I finished today the Studio model and also did some test renders. You can see that the Tortoise is smaller and also lighter with about 300 g / 11 oz / 0.66 lbs than the 4x4 truggy REVii I finished at the start of the year. I also played a little more with the wing shapes in the digital file than in the real build, as I currently don`t have enough 11L curved panels :/ Moreover, the model can carry a maximum of 2x hubs, so the safest way to go (with 4x buggy motors + a PF servo/ PU L model with no fire hazards) is 2x BuWizz 3.0, which means that I have to swap the servo with a PU L (an unwanted novelty for me). V.S.

I understand. And thanks a lot! ;)

I see. Thanks for the answer! I think that I would get the more affordable BuWizz 2.0, even if I am not careful at driving my models :/

Yup :/ Also, the 6.0 might hold up better, as there might be a chance to actually have more qualitative electronics, considering the price difference. I think I am going to get some BuWizz 2.0 after I gather enough bucks. 1x BuWizz 2.0 can hold up 2x buggy motors + 1x PF servo?

Soo, after some tests I scrapped the RC-E buggy REVii and started working on a compact 4x4 model with 4x buggy motors and 1x PF servo. The chassis of the new Tortoise buggy is sturdy enough for me, but I am not so sure about the bodywork. I modified the connection between the front and rear frame the last days and the bodywork today. Now I could put the 2x Mk 4.0 hubs in the rear, just under the wing. Moreover, besides the 4x4 drive, 4x buggy motors and 1x servo, the Tortoise buggy has independent suspension on all wheels, a detachable bodywork and wing. The thing is that all my 4x MK 4.0 hubs stopped showing me when there are fully charged for a while and that led to 2x hubs with swollen batteries. Today, one of the remaining 2x hubs went smoking when I tried to connect it to a remote (turned on the remote and just turned on the hub with 2x stacked connectors put on a channel; when I pressed the button of the hub, the hub stopped showing its usual green/blue lights and then smoke came from the circuit board followed by a small flame). So I was left with just 1x (traumatized) hub and a little monster-model with 4x buggy motors :/ I am planning to run the remaining functional electronics with a hobby-grade LiPo battery that also has 2 cells but gives more flexibility and ”safety” (I never though that I could call a simple LiPo safer than one connected to a circuit board with some safety things, even rudimentary some ones). For that, I have to make some adapters and swap the unusual JST (type PH with 3 wires) connector of the board. Anyway, if someone is interested, here are the internals of a MK 4.0 hub.

Well, that went wrong smooth enough............with my new buggy, I managed to tear the small pins of the CV joints in the driving wheel hubs, the new planetary ones - part 46490c01 So I replaced the CV joints with metal U-joints and the wheel hubs with portal ones with an additional gearing of 3:1; so in total, the model has around 5.61:1. Still, the model can`t run......I think the new red 28t differential also has a surprise for me. But anyway, I think that the wheel size contributed or caused this, as the model uses 120mm RC tires paired with the 56mm d. rims. Might be also the weight, at around 1.5 kg / 3.30 lbs / 53 oz. In any case, I think I will scrap the buggy :/ P.S.: Pay attention to your CV joints, even the new ones, especially when put under stress/ run at high speed or/ and torque.

I see...........then, after finishing the model, maybe you would make a video :))

I am very curious how much torque you got out of it

With the problems encountered with the last semi-RC model (RC hobby-grade electronics + Lego driveline) in mind, I made a large scale buggy (around 1:10 but a bit shorter in length). The RC-E buggy REVii has detachable bodywork and wing, an enclosed ”tray” for the electronics (when the bodywork is attached), a fully independent suspension (made with 4x extra-hard 9.5L shocks) and a rear wheel-drive geared at 12.57:1 (12-16-20t + 20-28t + planetary wheel-hubs) with the possibility to use a differential instead of the 28t gear (the swap won`t affect the gear ratio). I am pretty confident with the integrity of the chassis............but not so much with the one of the bodywork and the driveline :(( P.S.: the RC-E buggy REVii was scrapped. Also, I had a fairly new RC model as a reference...........the Kyosho DirtMaster, a kind of a variant of their renowned Ultima buggy series. Finally.............this meme fits perfectly with my ”situation” with the Lego gears now: *Explanation: