Questions tagged [technic]

A more advanced form of LEGO®, allowing for the creation of more realistic working parts.

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2
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1answer
57 views

Lego bags missing sets

I have some Lego bags that I do not know which set they belong to. Can you guys help me?
3
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2answers
107 views

What 3D modelling services I could use to create custom LEGO pieces?

I want to create some custom LEGO Technic pieces, but I can't seem to find any software that is good at making it. I have tried using Blender, but it is hard to create holes. Do you have any ...
4
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0answers
63 views

How would one parametrically create a LEGO-compatible gear?

If a gear was intended to smoothly mesh with standard LEGO gears, how should it be defined? While I know that the mean diameter (average of inner and outer diameters) of a LEGO gear should be 1mm/...
3
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1answer
47 views

Technic Rough Terrain Crane (42082) doesn't move

After first book, crane won't roll if pushed. If this normal. I know when you free soon one wheel, the other will go opposite direction, but when I try to spin all four in one direction, it locks. It ...
7
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2answers
206 views

What's the purpose of brick 46835 (two wheels clutched into each other)

There is this strange wheel-like part consisting of two pieces snapping into each other and offering to insert axles from both sides, as shown in the first image. What is the purpose of this part ...
1
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0answers
81 views

Technic 4x4 crawler questions

I have the Technic 4x4 Crawler 9398 fully assembled and in working order, but the rear U-Joint sheared itself in half during normal use. I have a replacement piece but now I can’t get the wheels to ...
7
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2answers
585 views

Connecting an axle to a stud on the ground for railings

I'm trying to build railing using axles and connectors and am not finding an easy way to get the axles that go to the ground to connect in a way that would be best for my design. Three options I've ...
4
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1answer
91 views

What is the Bluetooth PIN for the LEGO train PUP remote (88010)

I'd like to use the Powered Up train remote, #88010 as a simple controller (bang-bang only, obviously). It's Bluetooth, and it shows up as a device, but the PINs 0000 and 1234 don't appear to work. ...
2
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0answers
94 views

Operating first time my 42082 set [closed]

I completed building the 42082 Rough Terrain Crane set and just found out that the boom does not work and the rear spread legs do not fold out, just the front ones.
5
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0answers
79 views

Oil for old 4.5v electric motor? (UK)

Hi I've just got my old lego technic motor from the loft. It works but squeals in a way I don't remember it doing (35 years ago). I assume some lubrication would help and I've seen references to 3-in-...
12
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1answer
1k views

Motorized speedboat from Technic Catamaran alternate model?

The alternate model for the 42105 Technic Catamaran set looks a lot like a remote-controlled speedboat. This set doesn't actually come with any motors, or even propellers, so obviously this model isn'...
15
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1answer
3k views

How do the various LEGO springs compare?

Recently I received set 42107 Ducati Panigale V4 R. I noticed that this set includes a new spring - part 65151c01 Technic, Shock Absorber 11L with Internal Spring, Dark Bluish Gray Shaft, and Light ...
25
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1answer
4k views

Is it possible to build a working 100% LEGO glider with the Technic Catamaran sails?

In the past I've tried to make working LEGO gliders but since all the LEGO sails were either too small or the wrong shape the only thing that ever kinda worked was using paper over Technic beams (in ...
8
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1answer
1k views

What is the purpose of the 8 tooth timing gear?

I recently ran across the 32060 Technic Gear Timing Wheel 8 Tooth element when sorting a mixed bag of parts. This element doesn't appear in many sets as a functional element. Here's one example from ...
2
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3answers
185 views

What are the arguments for and against an adult tackling a complex LEGO Technic kit as their first (and possibly only) build?

Suppose I want to get an overall view of LEGO as an adult and can afford to buy an expensive kit. I have the following abilities Good eyesight with glasses Good hand-eye coordination and ...
1
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2answers
123 views

What proportion of LEGO Technic parts are specialised in a given kit?

I do not have any Technic kits. I'm not even a LEGO user. However I am interested to know the following: In a typical Technic kit, how many of the parts are standard Technic pieces and how many parts ...
7
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2answers
260 views

How to integrate hardware/embedded button with LEGO?

I have two different buttons B3F-1000 and 3a250vac switch which i want to integrate into a lego "machine" which i'm powering with an arduino. Since the rest is integrated into lego plates, ...
3
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1answer
618 views

How to Motorise 42111 Dom's Charger Technic

I just received the 42111 Dom's Charger set as a gift, and I was wondering whether it could be motorised and RC controlled? A part list would be great as I don't own any Power Function parts. Cheers ...
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0answers
104 views

The power up app wont connect to my technic hub

I have recently bought a Technic Hub and four Powered Up large motors, but currently I only put two motors into the B and D port of the hub. I downloaded the Powered Up app to a pad and used the "...
6
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1answer
294 views

Can you help identify this olive green space fighter lego set?

This set was bought about 10 years ago for my son. It is predominantly olive green with red trimmings. It has stickers with WARRING A-347 written on them. It has some moving parts that seem like ...
3
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1answer
96 views

Interface A missing PCB

I have a Technic Interface A with the cables but lack the printed circuit board (PCB) for PC that I need to use it for automating my models. The card when it was for sale had markings of Lego 9771 and ...
2
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1answer
235 views

how deep can the axle go in the Power up L motor

I am trying to make a MOC but I can't decide how long the axle could be so it can go fully into the motor but not extending out of the other side. Could you tell me how long the axle can go in?
1
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1answer
79 views

Is the Technic hub putting the battery in series or parallel

Can anyone tell me how the battery in the Technic Hub is connected? Are they connecting the batteries in series or parallel? It is the hub that powers the motors, right? If all 6 AA batteries are ...
4
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2answers
1k views

Why do gray axles appear black and black axles appear white and black in this manual?

I've been looking through the parts of an old manual I have and I noticed the odd-length gray axles appear black and the even-length black axles appear white and black. Is this just an artifact of ...
1
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1answer
225 views

Lego technic 42082 4 wheel steering issue

I have just completed the build and everything appears to work as it should except the 4 wheel steering. When you turn the small wheel on the rear of the crane only the rear wheels steer. The front ...
8
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2answers
5k views

If I were to make a LEGO fan how would I make it blow air on me?

I was just wandering off into my imagination and then it hit me: I should make a LEGO fan? I mean, how hard could it be? It is actually very hard for me. No matter how much ratio I put on it, it ...
2
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2answers
298 views

How can I make my LEGO engine go faster

I have a LEGO engine powered by a PF XL motor but I didn't realize until now that the motor is not that fast and that even when I increase gear ratio the gears always get either unattached or jammed. ...
4
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2answers
809 views

Can you help me identify this part?

After a lot of circus and calisthenics with a magnifying glass and lamp, I'm still unable to read the part number. I've also clicked thru' about 180 pages of LEGO 'Pick a Brick' and didn't find it ...
2
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1answer
982 views

Can Lego Remote Control 88010 control Lego Technic Hub 88012?

I have been exploring the new Bluetooth Technic smart hubs with the Control+ app and PoweredUp app. I would like to also use a physical remote. I have the Technic smart hubs that come with the ...
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1answer
76 views

Bionicle generation 3 [closed]

Hey LEGO will you make another Bionicle reboot? If you are is it going to be a bit more like g1 but also bring back a few g2 characters and I hope it is either ccbs, you bring it back or technic like ...
2
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1answer
111 views

Winch with String

I'm considering buying a few winch's with string. I don't understand what I need to make it turn. It doesn't look like a regular technix axle goes inside it right? I've looked at a few of the ...
5
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2answers
301 views

How much energy do LEGO Technic gears lose to friction?

So, I recently watched a video by the Brick Experiment Channel about building a 1 Googol:1 reduction gearbox, which at the time of writing this question, is at #44 on Youtube Trending. At the end of ...
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1answer
1k views

How can I make church bells with a pull cord?

I would like to allow the viewer to pull on some strings or chains and let that ring my church bells (I know it won't make much sound, that's fine). I'm thinking I'll need a pulley and some string, ...
3
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4answers
499 views

How to prevent my connected axles from falling apart?

In my EV3 robot, I have two rear axles connected to each other using this part mounted like this: [ The problem with this construction is that after a while of driving, the axles disconnect like ...
3
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1answer
191 views

Which pieces were used to make the flexible mesh skin for the life size Lego Bugatti?

In the linked video, around the 1:50 - 1:55 mark, a person can be seen picking up a flexible hexagonal mesh, and bringing it to the side of the vehicle. Also, close ups are visible around 2:03 - 2:37. ...
2
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0answers
98 views

How to get Lego Mindstorms EV3 expansion set (45560) programmes in Scratch

I bought recently Mindstorms EV3 expansion set (45560) and found out that the available programs are written in old LabView-style programming language: https://le-www-live-s.legocdn.com/sc/media/files/...
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0answers
85 views

Front driveshafts on landrover defender don't stay in place

The front driveshafts on my Land Rover Defender keep falling out, then the cogs fall out of the front differential. I have done them three times as per the manual, but every time I get the same result....
10
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1answer
2k views

Realistic Lego car sets containing gearboxes and engines?

Lego Technic 853/956 Auto Chassis contains a car chassis, complete with a transmission gearbox. Other sets like Lego Technic 858/8858 Auto Engines contain parts to build working models of real-life ...
6
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1answer
293 views

Bugatti Chiron - loose connection to wheels

I’m currently building this set and I notice that the connection to the front wheels often falls out. This is the small red line between the wheel and ball joint. It depends on the angle. It is ...
1
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1answer
104 views

Transparent Technic elements

I know these Technic liftarms come in clear transparent: https://www.bricklink.com/v2/catalog/catalogitem.page?P=32278#T=S&C=12 https://www.bricklink.com/v2/catalog/catalogitem.page?P=32009#T=S&...
5
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2answers
242 views

Part differences between main and alternate models of 8285 set

Someone is selling the alternate model of the 8285 set But I'm really more interested in the main model of that set. Does anyone know how many bricks I'm going to be missing when only the bricks ...
1
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1answer
98 views

What set did this Technic container come from?

This box has a lot of Technic LEGO pieces but I don't know which set this is from. The box is small, violet.
2
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1answer
247 views

How to make a Lego continuous conveyor belt

So I need to make a continuously working conveyor belt transporting blocks. I have seen this post, but additionally, as already said, I have to make it work continuously transporting blocks,so I have ...
7
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3answers
1k views

Clip a wall to a 6 or 7L pole

I'm planning on making a wall 6 bricks tall. The wall will have some vertical clips coming out to clip to a vertical pole. Unfortunately, the only 6 or 7 length bars appear to have the little stopper ...
5
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2answers
415 views

How to locate pneumatic leak

I have a simple pneumatic claw with a 2 pump compressor that I built somewhat recently. It worked fine for a while, producing up to 4 bars of pressure, but then the system wouldn't increase the ...
3
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1answer
544 views

Issues with my LEGO Land Rover Defender - Rear Wheel Keeps Popping Off

I just finished the assembly of the Land Rover Defender Technic model and it appears I have trouble in the rear... the rear left tire keeps popping off every time I try to roll forward. It is secure, ...
6
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2answers
144 views

Overview on how to use special Technic parts?

I just came out of my "Dark Age" inspired by my kids growing up and getting more and more out of Duplo and into Lego. I bought a mixed lot of Technic parts and man, there are a lot of new parts! So ...
16
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2answers
3k views

Is this a real Technic cloak?

I found a cloak piece in some used LEGO I bought from a former LEGO employee. The cloak does not say LEGO on it, but it fits perfectly onto Technic figures with a satisfying pop and matches the ...
1
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1answer
308 views

How to motorize a LEGO Pneumatic valve?

I am working on a project that requires remotely switched LEGO valves, and I tried many designs I found, and none of them worked due to the valve causing too much resistance. Does anyone have a ...
4
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2answers
367 views

Which parts have no-friction Technic axle holes?

I want to make a no (or very low) friction inline coupling for axles. The axles must turn, transmit moderate torque, and be in phase (therefore backlash must be minimal). The axles remain inline at ...

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