LEGO Technic, Mindstorms, Model Team and Scale Modeling

TECHNIC NON-VEHICLE CONTEST - DISCUSSION TOPIC Better late than never, but the winter is coming (for most of us), so let's find something to do. This was actually the topic I had in mind for the first contest I hosted. At the time TLG requested if we could to a triple build contest (this was TC2). After that I never pursued this idea....until now...finally...TC28 DESCRIPTION Build something that is not a vehicle, having some interesting functions or mechanics. Animals are not allowed (we will save that for another contest). You can build machinery and mechanical stuff etc. As long as it's not a vehicle. Furthermore, the model should be a static model, so you ca…

Polybag: 30710 Skid Steer Loader Jan 25 42197 Backhoe loader (104 pcs. | $12.99) 42198 Propeller Plane (333 pieces | $26.99) 42199 Monster Jam DIGatron (218 pieces | $26.99) 42200 Monster Jam ThunderROARus (232 pieces | $26.99) 42201 Deep Sea Submarine (413 pieces | $36.99) 42202 Ducati Motorcycle (1603 pcs | $189.99) Mar 25 42203 Tipping Dump Truck (462 pcs | $49.99) 42204 Fast and Furious Toyota Supra MK4 (810 pcs. | $59.99) 42205 Chevrolet Corvette Stingray (732 pcs. | $59.99) 42206 Red Bull F1 Car (1362 pieces | $239.99) 42207 Ferrari F1 Car (1362 pieces | $239.99) June 25 …

This topic is used to pose generic building help questions.

Jan 42163 Heavy Duty Bulldozer - 195 pcs - $10.99 42164 Off-Road Racing Buggy - 219 pcs - $15.99 42166 NEOM McLaren Extreme E Race - 252 pcs - $26.99 42167 Mack LR Electric Garbage Truck - 503 pcs - $34.99 42168 John Deere 9700 Forage Harvester - 559 pcs - $42.99 March 42165 Mercedes-AMG F1 W14 E Performance Pull-Back 42169 NEOM McLaren Formula E Race Car - 452 pcs - $52.99 42170 Kawasaki Ninja H2R Motorcycle - 643 pcs - $79.99 42171 Mercedes-AMG F1 W14 E Performance (18+) - 1642 pcs - $219.99 42178 Space Wheel Loader LT78 - 435 pcs - $34.99 42179 Planet Earth and Moon in Orbit - 526 pcs - $79.99 …

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This is a separate index for our contests. Generic Contest Discussion

LEGO TECHNIC AND MODEL TEAM INDEX Welcome to the LEGO Technic and Model Team forum on EuroBricks. We hope you have a great time here. Feel free to take a look around and if you have any questions, you can always PM one of the staff members. This page is the forum index. It contains some of the major topics and useful topics in the forum. It also includes a FAQ. Before posting a question, be sure to take a look there. STAFF Jim Milan TABLE OF CONTENTS FAQ Notable topics Yearly discussion and speculation topics Reviews Contest Index Useful websites Buying third party parts …

Well after 6 years of living in dark ages of my life i found joy again to build my own models after the g500 i founded joy to build mocs but in my dark ages i almost sold every set and piece so now that i have finally out of dark ages and after the amazing g500 set i decided to start again creating my own creations so i went to my local shop today to buy a "few" sets to start again now i have 3 g500 3 skidders 3 volvo fmx 3 harvesting machines 2 peugeots and 2 jeskos with over 25000 pcs to start new era of my mocs(and before you ask yes i did buy the entire stock of these sets in my local supermarkets sorry kids;) .) here is picture of all sets sorry the third g500 is mis…

So, last night I was testing out a new vacuum engine design. It was an inline 2 cylinder, with 4x4 pistons and 3 stud stroke, and had a new base and supercharger design. The supercharger had only one rotor(most have two) in an effort to save more parts and to not use up all the engine's power. I was running the engine at full throttle with a tiny Shark household vacuum and was measuring the RPM's with my tachometer. It redlined at about 2350 RPM, then slowed to 1800, and slowed even more to 1000, idled a few seconds around 650, and died. I tried turning the flywheel to restart the engine but it was stuck. After taking the engine apart, I discovered one of the pistons…

Let´s start with brand new model for the LEGO Technic Challenge. A 29 cm tall figure of American astronaut with moving wrists, elbows and shoulders. The helmet is equipped with two PF lights and both arms are operated by PF M motors. The model is remote controlled and powered by rechargeable LEGO battery.

I have had the idea of a metal lathe bubbling in my mind for a long time, and this is the perfect contest to make it reality. Originally I thought it impossible to do properly as there was no way to make long enough screw for the feed but that changed with the release of 73763 with which can arbitrarily long screws be made. Another significant problem was the need for a suitable main bearing which can take the weight of the spindle and has a large enough hole through for the bore. This was enabled by the hoop parts 3250 and 77107 along with the steel ball 99948. I tried GBC balls but as expected, the rolling was very rough and not what I wanted for this kind of thing…

Hello All. First some background... For the TL:DR crowd, there are some pretty pictures below :P So, while in my mid/late 50's and having been dealing with ME/CFS for past decade... I recently found that getting back into LEGO was a great self-help/therapeutic method to get my brain back into gear (but a rather big hit on the bank... Pro Tip: never have one-click purchasing available for online shopping while under the influence of a very foggy, groggy, unfocused but desperate for stimulus brain). After I got past the costly Classic Space nostalgia, I decided to stick with the equally costly :P MINDSTORMS, Technic, trains and things that actually did stuff. I …

Hello, this is my first proper thread so forgive me if it’s a little amateurish in layout. With that said i’d like to begin by saying i’ve been working on this project on and off for a few years to get my 75054 AT-AT walking, having tried out the mechanism for the official LEGO walking AT-AT i’ve found that it is not stable enough nor satisfying. Since then I have been through multiple iterations of trying to get each leg moving but with only one off the ground at a time. As you can see in the pic from DK’s StarWars Vehicles book the mechanism for connecting and moving the lower leg relative to the upper leg seems to be similarly joined enough th…

So I just finished installing a set of PU lights in my MOC when I saw that one LED wasn't working. After closer inspection I noticed that there were bare cables right on the exit from the black box between the connector and the LEDs. Than with help from a slim flat head screwdriver I managed to open the black box. There I saw the 2 bare wires crossing each other which I think shouldn't be happening. After I untangled the wires everything worked again. (I'll protect them properly later) It was interesting to finally see what was hiding in that black box as it was always in the way of something. I thought you guys would li…

I just got the Buwizz 3.0. In the first few days is worked as intended. I set up the profile and could drive and steer using both the app and also on the PS5 controller. Suddenly one day later I could no longer steer using the left joystick on the PS5 controller. The right joystick doesnt work either. I could assign the pad-keys to it, and that would work, but its awkward to steer with. I tried with another phone and another controller, but same result. (I tried to download brickcontroller 2, but then again there is a problem calibrating PU L motor..)

BrickController2 is an Android and iOS application that allows you to control your Lego models using a compatible gamepad. It supports the following devices: - SBrick - BuWizz 1-2 - BuWizz 3 (basic support) - Lego Powered-Up devices: Boost, PUP HUB and Technic HUB (or Control+) - PF infrared (on Android devices having infrared emitter). Features: - Multiple profiles for a single creation - Multiple motor (or output) assignment to a single controller event - Different types of devices can be used at the same time - The same motor (or output) can be assigned to multiple controller events - Different joystick characteristic settings - Different b…

well i found picture of 42207 on reddit Well i saw pictures of 2025 speed champions they had wider rear wheel but the technic sets dont have wider rear wheels

Hi, I hope it is not a unallowed leak, since it is photo from catalog, if not @Jim please remove it. What is interesting are tires. What do you think? Are they a new ones or just old tires from Big Red?

I am happy to finally present a model I have been working on for a very long time. There's quite a bit of history preceding the development of this model, which I have hidden in the spoiler below. But before you do, do consider supporting this model on LEGO Ideas, it would be greatly appreciated. Spoiler It all began almost 10 years ago when I had a go at my first decent attempt at building a, larger-than-minifigure-scale, super car. [/url] Back in the day I was mostly building pirate ships but I did follow car building legends, the likes of Firas Abu Jaber and Malte Dorowski and be in awe at the sight of their meti…

I'm building an Arocs 42043 and the turntable felt quite bad even before assembling it. Turning the gears with my fingers it got stuck even before attaching the crane to it, and after mounting the crane on the truck it barely turned more than 20º before getting stuck and making the clutch gear slip. I had the idea to lubricate it, and looked online about adequate oils. I found that some recommended silicone oil, and I went to the garge as I had a silicone oil spray. I sprayed inside the turtable through the 4 top holes and spun it and after that everything started to work like magic. Later, I read that some silicone oils contain acetone and that it damages the p…

Hello guys, few days ago i finished and released my latest MOC. And here i want to share it with you and it a bit more technical aspect of it. if you are interested. (My english may have few errors) Main one is the tractor, as you can see its Case QuadTrac 620 articulated tractor, aimed for 1:17 to match with trucks and other farm machinery, mainly eric´s if there is collector who appreciate that. but this scale is also big enought to pack everything needed and look good, and small enough for not needing large uniform boring surfaces. On the outside it may look like pure system thing, but on the inside its packs 6 PF motors. two of which are L m…

This thread is about one of the first attempts of TLG wandering into the world of electronic control using actuators and sensors in connection with a computer. Whoever wants to contribute, feel free to dump it in here. Should there exist already a similar thread on EB, moderators please let me know, merge, or delete this thread! Here are absolutely wonderful references to already elaborate documentations and solutions for the operation of "TC1 world 4.5V machinery": Apple II operating 9750 and much more: http://lukazi.blogspot.com/2014/07/lego-legos-first-programmable-product.html Reengineering procedure and functionality of 9771 (in German); schematic of…

Hi there, Today I made the happy discovery that deep in a cupboard in the tech department of the school i teach in is a whole load of Dacta control labs, 9751. However there is no software, does anyone know where I can download it from? Or is there a way to use it without the software? Cheers D

pictures from Reddit.

For Xmas I bought myself the instructions and the extra parts that I didn't already own, to build Nico's Manual Braiding Machine. It's great, works just as it should. Except. I got bored hand-winding the thread onto the bobbins, if it was too loose or too tight or wriggly, the machine couldn't make good braids. I needed to make a winder. First attempt was with bricks and plates, I didn't even think I needed gears. Then realised that gears meant more wound yarn for less winding time. The bobbin itself was being pushed away from the gears, so a little wall stopped that. I then realised it took up far more space than necessary, so swapped out some bigger bricks f…

I have a few fake engines prototypes on the shelf that could be great for this contest but I think this theme is a excellent occasion to try something different, if possible never seen before. I will therefore try this crazy idea first. It could be described as a Gearbox Barrel Organ. It borrows ideas from the Hammond organ, the barrel organ and the gramophone. Working principle: A flexible tab (reed) touching a rotating gear vibrates and create a note noise. If the gear speed increase, so do the noise pitch. So in theory a well-designed gearbox should be able to turn this noise into some kind of melody, right?... let's try! Gearbox : I first tried to play …

This topic can be used to showcase your CADA model/set as well as discuss it. PLEASE NOTE: We don’t endorse other brands on the Technic forum, although we are making an exception for this topic only, since our members have created some awesome models with this brand. Rules: CADA only, no other brands at this point. This is the only CADA topic for the Technic forum, and each CADA model belongs here, so no opening a new topic for a new CADA model. Do not use this topic solely to promote your CADA set/instructions. Instead, use this topic to create a nice presentation of your CADA model. You can include…

CONCEPTION 42082 didn't really appear in my to-do MOCs until I saw the model by Akassin. It looks cool, but there are parts of it that I don't really like. Some parts like the mirrors are too flimsy by Lego standards, the undercarriage doesn't seem to be structurally sound, and the inclusion of the bidirectional gearboxes doesn't really make sense to me, among other things. My approach is that a model should be properly braced and stabilized, and there should be some adaptation regarding the scales. In other words, the features should fit the scale, and some features might work only in one scale and not another. To me, the bidirectional gearboxes work best when the m…

because solid Axles and suspensions are the biggest problem for beginners i have started on my german homeforum a collection thread for vehicle axles and suspensions, and i think here should exist a thread like this too. feel free to post your own axles and suspensions. please with picture and if possible with an LDD file that it can simple reproduced. here a first bunch of my axles heavyplanet trackwidth is variable planet with difflock planet with difflock and power drivethrough driven and steered independent suspension with 11 studs between towballs, unfortunately no ldd file possible flat and solid axle please post your own axles too

I Need the BL Numbers for this 3 Parts, can someone help me?

For the eager ones, Studio part files are here: frame and insert. Hello Technic Builders! The existing technic portal hub was a nice piece at the time, but it was designed long ago before the existence of deeper rims (Defender) and it is unfortunately not really compatible with them in the sense that it cannot make use of the extra space (does not fit inside). Unfortunately, when used with regular rims, the current portal hub piece has a horrible steering geometry (huge scrub radius), as it sticks too much out of the wheel, and also takes away a lot of space from the center of the axle build (less room for springs, links, etc). In the past few years I lea…

DEVELOPMENT It's time to level up the mini replica game, and for the next entry in my collection I wanted to work on the 42128. For a Technic head 42128 is easily one of the best models in recent Technic, as it has a lot of functions. It is also an interesting model to build a mini replica from, since its original scale is 15 studs wide, which means the mini version will be the 9 studs wide scale. There hasnt been many official 9 studs wide truck in Lego Technic. The most recent one is the 42167 Mack LR, and the second most recent one is the truck in the set 42023 released way back in 2014. I have done only one mini replica in this scale, which is the mini 42078 B mo…

Not quite sure what to call this thing... A machine to instantly calculate the day of the week for any calendar day of any year (e.g. birthdays, etc.) There will be four hand turned knobs to select the century, year, month and date, and the day of the week will then be displayed. The idea is to do it with differentials, and lots of 1:7 gear ratios. Leap years will be accounted for automatically by an extra lever that adjusts the selection for Jan and Feb (hopefully!) The biggest enemy is gear lash. However, I believe my current prototype shows that it can be done (just). I use a very precise detent mechanism for the knobs, and then gear up before the d…

All my bus models up to this point have been of buses currently in active service. However, my next bus model will be of an older, retired bus: Metro Transit's 2003 New Flyer D60HF. Metro Transit, the transit operator in the Minneapolis-St. Paul metropolitan area, ordered a large number of New Flyer D60HF articulated buses in the 1990s and 2000s, with the final buses in 2006 being the last high-floor articulated buses ever built in the US and Canada. Over the years, they have been gradually replaced by newer New Flyer D60LFR and XD60 articulated buses, and the final D60HF buses were retired by 2021. A number of units were bought by private owners after retireme…

Ever since building my Classic Dump Truck from two years ago, I felt like it was a model that could be greatly improved upon. The original model was built at a relatively small scale, though I was able to put a good number of functions in the model. This will be the sequel to that model, and at a much larger scale. Stud.io model so far: I've immediately put a good amount of electronic components in the model. This model will use Control+ elements; a large angular motor is used for drive, which is 4WD on this model (unlike the previous smaller version which was RWD). Thanks to it having an output on both the front and rear, it is able to easily form a longit…

So perhaps a bit of an explanation first. I live in a small town with a lot of history in England, so as soon as I saw what @Jim was after I knew I’d want to create a historical machine. I thought about a printing press, I thought about a steam engine (without the steam of course) and then I thought about the history of where I live. The town used to have a Mill, it was originally a Corn Mill and then got converted to a Cotton Mill. It was originally powered by water but then in its later years steam. Unfortunately the mill is long gone, but it took me down the route of Mills and the Industrial Revolution. So the plan is to build a Power Loom and ideally a representa…

I decided to do this thread because I am tired to open new ones again and again, so enough speaking about me lets go for the almost MOCs. It seems that we are on dumpers time because I am working on this massive small truck. It will be very simple, only 2 axles steering and bed tipping but I had some problems... the angle and weigh of the bed due the lack of room when the steering work, bed itself also was a problem with technic parts and the scheme color will be a imposible to solve problem at least for the real MOC. I think I do not have to say which the truck is.

Self-explanatory. I've noticed that 3/4 pins will not securely attach to System plates with holes in them, due to there not being a groove on the rim like there is in 1/2 width Technic beams etc. But strangely enough, when you put 2 holed plates on top of each other, a full-length pin will clip securely. Is that by design? I find it a bit frustrating, since it'd be pretty cool to be able to use half-length pins on plates and such. It's particularly egregious with part 3176, which could work really nicely as a trailer attachment on a half-pin or something to that tune, but seems like you need to stack 2 on top of each other to make it work, and us a full length pin then.

So I had this idea for an alt out of an amazing Ford GT set for a while now but not enough time to sit on it. Then Christmas magic happend aka holiday break and this is the result :) I was aiming for somewhat old school look with some modern, sporty additions in form of rear wing and rectangular lights. I'm also pretty happy that I've managed to use all 4 wheel arches :) Some photos (clickable for larger resolution by right click -> open picture in new tab): And short video:

First, here are the links to my dropbox project files that I will keep updated: Lego Demo B to Test multiple Lego Interface B (70909) Lego Script B: an EXE executable C# program that integrates IronPython (No need to install Python separately). Lego Class B: A C# DLL that can be linked to VBA programs (Excel for ex.) or even Python Lego Interface B Python module to be used with Python only. Lego RCX python module that manage serial communication using Serial IR Tower only (Not USB) I'm now putting my efforts more towards the use of Python. I'm using the latest 3.13. Some python functions are not compatible with windows 7 but …

INTRODUCTION The collective interest in a Technic backhoe has been around since as far as when I first joined this forum, which was 10 years ago. Such intense interest is understandable: a backhoe is one of the most complex, if not the most complex vehicle for a Technic model, since it has a lot of functions while its main body is rather compact. Hence, as I see it, a backhoe is like an apex of Technic or at least Technic construction machines. Yet there are not many official Technic backhoe. Before this year the most recent iterations were 8069, a medium sized backhoe set released in 2011, and 42004, a mini version released in 2013. That means there was a whole inte…

Edit: Split by Jim into a separate topic. Sometimes I feel the need to have a chit chat topic for Technic members. What's a better place than a pub! ---- You guys should all get some money together and buy Ted a case of Hertog Jan

First of all, my best wishes to everyone for this upcoming New Year! I wish you all the best and, especially, plenty of great MOCs. Speaking of this... BMW GS 1250 Ever since Lars Thygesen designed the 42063 set, I’ve had the idea of building my own version of it in the back of my mind. I must say I was impressed by Lars Thygesen's design, particularly in three areas: The telelever suspension system The rear mono swingarm, which has the amazing advantage of not bending too much The simplified yet good-looking front panel design Using this as inspiration, I decided to retain these three elements in my own design. Of course, sin…

Well i was run out of cool ideas after the countach so there have been some consepts but nothing was finished until now:) So today i was randomly tried building something until i got an idea to mod and overhaul the hated 42203 truck so i started building the moded version on this morning Anyway here is all the build specs and functions(not part count) and what are similarities to the 42203 -build time about 8 hours almost one sitting -functions liftable second axle third axle has differential to power boxer 4 engine cabin has opening doors hand of god steering pneumaticaly operated dumping functions -similarities to 42203. Front and cab is 95% or…

1603 pcs € 199.99 January 1st

https://drive.google.com/file/d/1Rplc_ztfolJY_4FcBVGWGT810qldf8Wb/view?usp=drive_link Here's a picture of one of my latest innovations: a working hit-and-miss Lego engine. I took my single side valve engine design and modified the valve to use a cam, and made a special governor mechanism. When the engine speeds beyond a set RPM, the governor pulls away the intake cam and the engine coasts until the governor closes again. This pushes the cam back into place, allowing the cycle to repeat. I designed the valve so the 1x4 panel piece closes off the vacuum hose while allowing the cylinder to breathe freely. Under no load, the engine fires about once every 5-6 rotatio…

I'm trying to rebuild my old 8837 excavator after 30 years of storage and I noticed that the pump mostly doesn't work. For every 20 pumps, maybe one works and the others don't add any pressure (and in fact leak any pressure already in the circuit). I also noticed that the big piston leaks on the shaft seal (it retracts, but it doesn't hold pressure), and the metal shaft is blackened from what seems corrosion or residue of a rubber seal. It holds pressure normally in extension though. I tried to open them to see what's happening but felt that if I pushed harder I would damage them. I checked on bricklink and both parts are available but, being old parts, I fear t…

A few months ago I decided to bite the bullet and order 3 of Lego's new 2L driving rings from the McLaren P1 so I could keep my parts up to date (and because I mostly build with studded Technic parts). I've been experimenting with manual transmissions with shift linkages using the new shift forks. I ran into problems getting the rings to hold in or out of gear like my 3L rings can. Is there a reliable way of getting the rings to snap into gear and hold position?

Hi everyone! I'm new to Eurobricks, so don't know if this is the correct forum for this topic. However I really want to share my recent findings about Mould King Servo Motor. I spent last weekend testing MK Servo Motor and MK 4.0 controller with a LEGO Technic MOC. MK 4.0 has a controller with analog sticks, so one can think that it supports proportional control for motors. However there are many controversial reviews about this on youtube/reddit/forums etc. It seems that proportional steering was supported by MK some years ago, but they dropped it (probably) due to problems with fluttering and quick battery drain. Part 1. Out-of-the-box MK ca…

Update: Information regarding modules from 2018 onwards are represented after @Blakbird's original post. I want to keep BlakBird's section of the post as he left it, to honour the immense amount of work he put into it. ( @Ankoku @9v system) ----------------------------------------------------------------------------- Original Post Start ----------------------------------------------------------------------------- G%$ #@&% it. Thanks to Akiyuki, The Rebricker, and the rest of you &%$*ers, I've now caught the GBC bug and it is going to cost me a lot of time and money. It all started with Akiyuki. Well, GBC didn't start with Akiyuki, but I was more or less…