Kamil

Aftermath of this experimental vehicle: Some scratch marks at the bottom of the extender coming from rock crawling: Weared surfaces of the working extender: No other significant wear was observed in the other parts such as gears and axles. - Full inventory (1657 parts in total): Anyone who is interested in trials by using three more coated tires, may watch the video below:

Maybe it is time for Lego to introduce a real Torsen differential like the ones built by using 3D Printers. Then many gearing and axles for differential locking would be eliminated.

I see a very sophisticated dream car having insanely packed features here ! Thank you for sharing ! What caught my attention here is the use of the Torsen differential. Because I was dreaming to build an off-road 6x6 having Torsen differentials many years ago after discovering a variety of Lego Torsen's on the internet. I copied and built a Torsen differential similar to yours. After testing it, I concluded that, the Torsen differential can not be used for today in a 1/10 Lego Technic crawler. Reason is, too much pressure was being applied to the eight-toothed gears which are used for occasionally locking the axles. So even if I use the reinforced versions of these gears, I think at some point, crawling forces would break one them. After making some 6x6 and 4x4's based on instructions, seeing how a normal open differential decreases off-road performance, my final MOC came out by using no differentials at all. I am happy to see here a Torsen differential working lively in a real Lego vehicle !

Hi, After completing the above attempts, it was necessary to improve the grip on the rocks a bit more. However, the tires I could find online were both expensive, and there was no guarantee they would fit on the Lego rims. I couldn't find compatible tires in my area either. So, I tried to make them myself. Here, 44772 (56x34mm) rims and 44771 tires are used. These tires are coated with double layer of a single-sided adhesive soft car insulation stripes, to be used as filling material. Then, the entire thing is covered with soft car mat stripes, having interior studs to hold the material in place. All is explained in detail, and trials were carried out in the video below: All the best

My final version of the garage roof is given below. Here, staggered squares and rectangles are used in 2x2 and 2x4 formats. I am much happier with the result: And, my cat is taking over now :) Sending my best.

I had some doubts about leaving the studs on the roof. Because these studs didn't blend perfectly with the roofs of the surrounding buildings. If the studs were rare, then this could be accepted as normal bolts that hold the roof in place. But Lego studs here appear much more densely packed than usual. So I tried to cover the roof in a different way: 1. Covering the roof by using colored tiles (tiles here were not pressed down completely so they could be easily removed). This option doesn't seem very good to me: 2. Reversing the roof panels. This option doesn't seem very good to me either: 3. Then tried to cover the roof by using black tiles. It was impossible to find 2x2 square tiles for the required amount, so longer plates were ordered: The background was removed by AI in the final picture below: Conclusion: I would prefer the roof to have a matte finish. However, the studs here create a problematic image. Covering with square tiles may be better. Finally my B plan is activated. I'm not entirely sure now whether to keep the old studded version, or this final version. I'll give it some time; maybe things will become clearer in my mind over time. These are my latest facelifts for the three vehicles in the garage scene: All the best

Then, why the set is not marketed as "AMR 26" if the light arrangement belongs to 2026?

Thank you all for your comments. I might need time for programming beyond plug-and-play, as I'm quite unfamiliar with those topics (like setting up the devices, block programming, etc.) at the moment. However, there's a lot of useful information under this heading, and it seems every possible scenario has been covered. I'll try to choose the most suitable one. Thanks again.

It is nice to find the first traffic legal version of a Formula 1 car here. Because there is only one stop light in the track car while there are three in this Lego set.

Thank you for your message ! I was really scared when I saw the message :) Because real-life double-decker bus garages are very large. However, this might be possible in theory. The interior height of my garage is 150 mm (5.91 inches) up to the BUS + sign. The height of the raised ramp is 26 mm (1.02 inches). The garage height and width could also be increased slightly. Although it is currently suitable for 6-stud buses, with minor modifications it could also accept 7-stud buses too. Two or three of these garages could be placed side-by-side and the partition walls can be removed. Yes, it can be done, it's a great idea ! PS. Great bus collection by the way, I like them all. All the best

Honestly, compared to the city scene above, I didn't think free AI could create such beautiful and detailed environmental buildings. Chemical plants, the power station at the background, a nice freight train, and even an antique Unimog-like truck in the garage of the building on the right. Now I'm looking at them enviously. If such a scene existed and was published in the catalog, a trip to Legoland where it's displayed would be great. This scene also showed me that it might be good to add a few more touches to my own garage. The roof plates may need some more thinking, the buses could be replaced by official Lego sets that are 6 studs wide...

Thanks ! Yes, "Lego transit system" is a better idea, then AI created this industrial scene: Best wishes

Garage scene completion works: 1. Intercity bus facelift Front facelift: Rear facelift: 2. The garage owner's worn-out pick-up truck: 3. Custom built motorhome bus: 4. Overall maintanence garage: The base plate (garage can easily be removed): Resting area details: Base plate with vehicles: Garage building is added, resting area intermediate door is visible: Resting area shed is added: Garage front view: Garage right side: Garage back side: 5. Short video of the garage scene: Finally, AI generated "a garage in the city" scene: All the best

Thanks a lot bright22 for your comment. Actually I had taken a long break from building Lego Town and focused on Technic. I have a lot of unused pieces, so I wanted to do this flashback. I am still thinking of making some touches to this scene. I consciously used some discolored grey tiles, but I think, some of them are misplaced. I am going to try to collect them at the garage entrance. I am also thinking of covering studded rooftops by using red tiles. Not sure how it may look though... Adding the garage owner's pick-up truck and another bus are among my thoughts.

After making slight improvements on the bus, like making door lines continuous, it was right time to put this bus into a scene. Here is the bus hospital and the intercity bus: Bus improvement: Bus hospital (with closed doors): Bus hospital (with opened doors): Interior 1: Interior 2: Remotely controlled interior lightning by using six Power Functions leds: Resting area with interior details: Bus driver and mechanic: Features: 1. Bifolding garage doors that can be opened in two stages using a sliding mechanism. 2. Elevated maintenance platform with a retractable ramp. 3. Ground level maintenance platform. 4. Flowerbeds at the front side. 5. Vertical rain gutters that match the shape of the building. 6. Black and yellow striped alignment bollards at the end of the garage. 7. Tool crate. 8. Six-led remote-controlled ceiling lights. 9. Left side static lamp posts. 10. Left side green area. 11. Left side resting area with table and chairs, faucet and sink, chest of drawers. 12. Multi-sloped roofs. 13. Outer walls and decorations. All the best

Hi, 852 is my first Technic set and I got the most out of it. Then I combined it with the 8860, and the result was a large-scale pickup truck that satisfied me for years. When the new generation of technical parts came out, I reassembled these parts, and after using 852 in a Lego exhibition in 2012, I am still keeping this 44 years old set in a box. It is barely standing up due to loose connections, and mostly due to cracking problems of "light grey technic, axle and pin connector" parts. Also some gears and pulley also cracked and repaired. I replaced some parts with the newer ones but preserved original parts in my inventory too. You can decide by comparing these repaired parts in the following pictures: My Lego Technic pick-up at the exhibition: - For example, say we have a 44 yrs old Mercedes. If brake servo is not working, we replace it. If we use an original Mercedes part, then the car is original again even if the part is newer than the car's age. Collectors judge these vintage cars by saying 95% original, so on. I think two factors are effective here. 1. Emotional: Set must include all the parts that were present when it was purchased. This is also a collector's wish, and is important in terms of preserving the value of the set. 2. Logical: The set should primarily meet my personal development needs, it's parts should be replaceable as they disappear, and it's parts may be usable in other MOC's. Here, keeping it functional through repairs is a priority. When the part replacement becomes unmanageable, this set should be retired and replaced by new ones. I think you'll have to make a decision by building a balance between these two, according to your own needs. I do so by trying to be staying in the middle. All the best

Thanks #bright22 for the inspirational message. Indeed, I wish I had that set. Because, I am building an industrial maintanence garage for this bus at the moment. Then I could park a vintage Lego 722 bus near this one, that would look better. So, yes, it is a good idea to build a second shorter bus that might be good for setting up the scene. I think, I need to think on it a little more. Ps. I think 722 bus looks a bit like an airport shuttle service. By the way, the intercity bus above has another feature that I havent mentioned here yet. Did anyone notice?

I finally found a suitable location for rocky terrain crawling tests. The results are shown in the video: After completing these tests: (+) I am happy with: The playability of this vehicle on sand, gravel and rocks. The extender now, robust enough to cope these conditions (except the last rollover crash). Robustness of the drive systems at the extremes. Overall balance of the vehicle (vehicle balance, suspension system balance, rollover resistance, roll-forward resistance - especially when at extended position). The ground clearence of the mid section of the vehicle. The rear steering. It helps much for avoiding obstacles, and can also be used as a brake on downhills. The parts remaining on the vehicle in all driving conditions. I have lost only one Lego Technic beam 1x2 thin and one or two 1/2 width technic bushes during the entire trials. I almost lost my IR receiver cap too; I found it at the last moment, having fallen into a crack in a rock after rollover accident. The better IR receiving was obtained due to raising the cap a little higher. The tests were performed in a partly/densely cloudy day. (-) I am not so much happy with: The power output of the vehicle. It is sometimes stuck in the recesses. Getting the rear wheel's turning direction wrong sometimes; I'll need a bit more practice. The ground clearence of the front and rear axles. Vehicle is sometimes stuck on hard bumps. Excessive movements of the front wheels on some downhills. These excessive movements sometimes help the vehicle, but in a few situations it is a headache. I accepted this issue for the sake of the long suspension arms moving freely. The grip provided by original Lego tires. I can't do anything about this at this time. Inability to use double IR receivers in parallel for better receiving the signals, my try was unsuccesful. All the best

Thanks for the answer. In that case, if phone app. is used instead of 88010 remote control unit, does Lego has a suitable app. for stering/driving purpose?

Hi, I need to use Lego Technic Powered Up motors in a tight space. Is it possible to connect two Technic large motors to the 88009 train hub battery box from ports A and B, and drive these motors by using 88010 remote control unit, without further programming? (one motor for steering, second motor for driving). Thanks

Hi, I am mostly active in Technic section (RC 4x4, 6x6), but I decided to make a flashback, and return to old school Lego building. I tried to build a 2000's intercity bus by using both some 1970's parts as well as newer ones. The bus below is fictious and do not represent any brand. Just what is on my mind came out as V 1.2 (second version), so I want to call it Intercity V 1.2 I have still some discolored parts to be replaced: Front view: Rear view: Right side: Left (driver's) side: An air conditioning unit is added on the roof: Bottom view, fake engine is visible at the back: Articulation movement is added to the rear axle to ensure the rear axle is always on the ground: Full interior design is added with 2+1 seating: Front axle has 1970's style bogie type steering (similar to the steering system used in Fageol Cargoliner): The fake opening parts are determined mostly by using separator lines, front door: Mid door and luggage compartments: Mirrors are added: Overall: All the best

Okay, let it be in your own way. The video is great ! I was searching Lego crawlers for years, but Youtube algorithm never brought me your crawler. Not sure how that algorithm works. Thanks.

Oh, I am so happy to find another Lego Technic wild family car here (hmm, let's say nearly a family car :) ). Yes, it is like convergent evolution not only from the perspective of extending/retracting the length of the vehicle, but also from other aspects, which I am going to talk about below. As I mentioned at the beginning, I was inspired from the "Hydraulic Extending Rock Buggy" which was posted three years ago in Youtube, and another version of this vehicle was also posted six years ago ( "Extreme hydraulic buggy stretches up waterfall" ). As I was bored of playing with straight 4x4's and 6x6's, I was just looking for a more playful thing to make fun out of it for a longer period of time. Before building the Half Abnormal, I was dreaming to build a vehicle similar to yours. Then my choices (like selecting double wishbone suspension arms instead of solid axles) caused it to evolve in this direction. Coming to the extender part, I think a tip may come out from here. As you can see under "2. Extender Mechanism Module Early Designs" topic by following second and third pics of the topic, the drive shafts come straight over racks. That means, the shafts drive a worm gear to extend the vehicle. In that case, I also faced the problems you have mentioned. These gears are unstoppable even if some clutch gears are connected to them before the drive motor. That's why I used gear reductions instead of using worm gears everywhere. Worm gears were also working slowly, and I did not want to wait long for each extend or retract movement. Now extender is working faster (it is more fun like this, providing cat like movement on loose terrain), stopping itself if blocked as seen in the video above, but the disadvantage here is, when encountering an insurmountable solid object, the extender may stop against it. I overcome this disadvantage by slowly moving the vehicle, this helps much. The articulation of your MOC is insane for sure I wish you to complete your MOC soon. I am also curious about the effect of using two independent motors for each extender. I don't remember how many times, I came near to giving up, but somehow, every issue leads to another solution. I am still looking for a suitable rough rock area to further test this vehicle. All the best

Half Abnormal Building Trials Half Abnormal was constructed during two and a half months, few hours every day. Eleven different variations of the front and rear driving modules were constructed. These two modules are identical in base design, however there exist some differences due to the servo motor type used, affecting the connections to the chassis. So, when I was building one variant front driving module, the rear module was also built at the same time. All design changes affected both modules. In the final modules, major design flaws such as gear skipping was eliminated. Placing the motors of driving modules into correct places was another issue. Their places should be adjusted in order not to interfere with the movements of the extender. Five different versions of the extender mechanism was built. After conducting primary trials by using the vehicle, it was found that the last accepted version still had some flaws to be redesigned. These were explained above. Also some changes were considered for placing battery boxes into suitable locations. The pictures below shows some of the design variations on Half Abnormal: 1. Driving Module Early Designs Vertical driving motor / horizontal steering motor combination. I hadn't realised at the beginning that the steering motor could be brought inside vertically when I built this version. Here, steering motor occupies the space needed for the Powered Up battery box of the final design, not a good idea. The two battery boxes were initially placed at both sides of the extender. This brought too much pressure on the extender. Moreover, these battery boxes weren't aesthetically pleasing. So the Power Functions battery box was removed to be on the rear driving module in the final design. This process resulted in a weirder look but a more fluid design rising from front to back (see early posts in this topic). 2. Extender Mechanism Module Early Designs The actuators that I own, or I can buy, and the Technic gear racks were shorter extenders for my purpose. So the very first extender design was standing a little higher at first. When it became clear that the first extender could not handle the load, some reinforcements were added. Then a wider extender, with double racks on front and rear sides, was tried. This design is applied and reinforced. Finally I gave up with all the extender designs, and decided to build a perfect one. The result came out as the internal rack boxy extender. This new extender was working almost perfectly but lacked the internal thickness required to ensure the drive module connections were robust enough. As a result, I returned to the initial design back, and modified it further for the purpose. Here is the internal rack extender: 3. Result Finally, the version shown in earlier posts above, in the trial videos, showed up. Best wishes