Questions tagged [technic]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
8 views

42131 Bulldozer

Got to the testing page and everything is working correctly except the left wheel is going in the opposite direction to the app animation. I don’t know if I should start again?
user avatar
0 votes
0 answers
49 views

How do I disassemble Powered Up Motor XL? [duplicate]

My question is, how do you take the XL motor apart? I tried with my knife and hands, but unfortunately, it is still whole in one piece (tabs). I got the XL motor from the set 42099 and I would to make ...
user avatar
7 votes
3 answers
141 views

How to open first version of the pneumatic cylinder? (Part no 4688c01)

I have a Lego Technic set 8040 from 1984 with the first version of the pneumatic cylinder. Unfortunately, the shaft on the cylinder broke. Apparently the top of the cylinder (lid) is glued. Is there a ...
user avatar
  • 221
0 votes
1 answer
76 views

42114 (6x6 Volvo Articulated Hauler) doesn’t operate bucket and also doesn’t drive

My 42114: 6x6 Volvo Articulated Hauler drives in first gear for a moment, then stops completely; same thing with 2nd and 3rd gear. It doesn’t operate the bucket either. I suspect I forgot to add a pin ...
user avatar
  • 1
3 votes
1 answer
448 views

Gearbox doesn’t move when it’s in neutral - Is that normal?

I’m not sure if the gearbox is supposed to move when it’s in neutral but the gearbox only moves when it’s in drive or rear. If I made an error can someone please tell me if there is a way to fix it?
user avatar
2 votes
0 answers
71 views

I just finished the typewriter set and everything works fine but the type-bar is a little higher than it should be. Is there any way of fixing it [closed]

The typewriter works perfectly fine. The only problem is the typebar being a little higher than it should be.
user avatar
3 votes
1 answer
255 views

Technic pin on a pole: is it an illegal technique?

I have two 2714b pieces that I want to put together to make a longer pole. Is sliding the technic pin of one pole over the end of another pole illegal? (If it is, how else could I make a long and thin ...
user avatar
8 votes
1 answer
769 views

Extra wing pieces (21+22) in Ferrari Daytona 42143. Did I miss a step or did Lego get it wrong?

The Ferrari Daytona SP3 (42143) is supposed to have 10x 6319983 (small wing #22) and 11x 6316923 (small wing #21), both in black. It says so on the part-list and they are in the box. However I have 1 ...
user avatar
  • 1,170
4 votes
1 answer
184 views

I am building the LEGO 42131 D11 dozer and some of the parts are moving in reverse when testing

I am building the D11 dozer and some of the tests like 2 and 4 are moving the parts in the opposite direction that they are supposed to be going. I took apart the entire build and rebuilt it and the ...
user avatar
  • 41
7 votes
2 answers
246 views

A query about the balance of the 42130 - BMW M 1000 RR model

I have reached assembly step 632. The bike has a tendency to lean forward with most of the weight at the front, and is only just staying on the display stand. Has anyone else experienced this issue? ...
user avatar
  • 331
1 vote
0 answers
72 views

Power from single XL-Motor to both rear and front axles [closed]

I have a single XL motor and I would like to make my small car a 4WD one. Currently, it is just front-wheel drive. Any good instructions on transmitting power to rear wheels as well?
user avatar
  • 111
6 votes
2 answers
169 views

How can I connect a 4mm Stepper motor shaft to a technic gear?

How can I connect a 4mm or 6mm stepper motor D shaft to an old Technic gear? I would like to mount an old 8-tooth gear to a 4-6 mm diameter stepper motor shaft. Lego part: 3647: Stepper motor: ...
user avatar
5 votes
1 answer
217 views

I would like to check on a step in the BMW M 1000 RR build

A bit of a silly question here really but I am assuming the three decals in step 523 are simply three different options you can choose from for that piece ?
user avatar
  • 331
2 votes
1 answer
131 views

Black Universal Joints

I'm seeking black universal joints for a project. Do these exist in genuine LEGO form? I'm guessing the answer is no, despite hints (here and here). Ideally, I'd like the 3L size. Do you know of a ...
user avatar
  • 420
5 votes
1 answer
466 views

42082 crane boom doesn't engage

At the top of the sleeve part of the boom is a gear and that is supposed to turn against a rack of teeth all along the inner slide part of the boom extension, to make the boom longer or shorter. ...
user avatar
  • 231
4 votes
1 answer
153 views

Lego rough terrain 42082, page 57 book 1 - how does it connect internally

Is the dole meant to connect to another cog inside so all the gears rotate the big round cog on top (Image from brickinstructions.com)
user avatar
  • 41
8 votes
1 answer
2k views

What's the easiest way to build a delta robot using LEGO Mindstorms 51515?

I'm fairly new to Lego Mindstorms and I'd like to assemble a pick and place mechanism. I was looking for existing delta robot designs and found a lot of good looking designs: https://www.youtube.com/...
user avatar
5 votes
0 answers
301 views

How do I build my LEGO slope so it connects to the flat top without any notable ridges?

I'm currently building a functional LEGO escalator that is minifigure-scaled and with staircases transitioning from flat platform to stairwell to flat platform. Here's my progress so far: Here's the ...
user avatar
3 votes
1 answer
277 views

Piece in Lego 21327 Typewriter Step 26 can’t be flush as depicted in the illustration

When sliding part #6327028 down the left three rods as depicted in step 26, that piece becomes snug with the gray spacer piece from Step 25, but there’s a gap on the two left rods. The 1x5 black ...
user avatar
16 votes
2 answers
2k views

How can I place a motor in the middle of a Technic beam with an odd number of holes?

Can you give me some advice how to make it so motor will be in the middle, but at the same time keep the functionality of the 2 axles on the sides? It can go further up if necessary.
user avatar
  • 163
10 votes
0 answers
211 views

How To Ensure Only One Brick is Fed Into a Lego Sorting Machine at a Time?

In this video, they create a machine that can take a bunch of legos put on to a conveyor belt and, using a camera, sort them into a number of categories. I am building a (smaller) version of this, and ...
user avatar
3 votes
1 answer
627 views

Identify this T-shaped part

Seems to be used for making differential gearboxes, cars, and GBCs.
user avatar
  • 139
7 votes
1 answer
481 views

What is this LEGO part number? Technic, right angle with 4 pins sticking out

This part is required for building a LEGO steering rack. It connects the moving rack to the wheel axle.
user avatar
  • 139
-2 votes
3 answers
258 views

Why does this "useless machine" use out of production parts?

I found this new video. It uses out-of-production parts like the transmission parts. So when I tried to buy these elements in new Technic sets, I didn't find some of them. Any suggestions please?
user avatar
  • 253
18 votes
4 answers
2k views

How can I get my motor to line up with a linear actuator?

I am very new to Lego, and I want to create a simple horizontal sliding door. I'm using a medium linear motor to drive a linear actuator which is attached to the door. The problem is the motor does ...
user avatar
  • 181
0 votes
0 answers
41 views

I can't build gear on Digital Desinger [duplicate]

I'm new to this program and I can't put a gear in place. I'm trying to build a worm gear but it doesn't work.
user avatar
1 vote
0 answers
159 views

Are Technic and Education sets overpriced because they're "educational"?

It seems like to get a Technic set of any substantial size costs hundreds of dollars. It's kind of insane. Technic is marketed as "educational". Sometimes I wonder if The LEGO Group is ...
user avatar
  • 353
8 votes
1 answer
375 views

Does a LEGO Technic Power Functions L Motor work with a v1 receiver?

Does a LEGO Technic Power Functions L Motor work with a v1 receiver? I really want to know it, because then I know what motor I should buy.
user avatar
8 votes
1 answer
1k views

Identify an unusual double-ended ball socket link part

This part is made up of three pieces - two identical ball socket ends that fit the standard tow ball size, and a thin rod connecting the two that is freely rotating. This allows the two ends to rotate ...
user avatar
  • 183
5 votes
1 answer
474 views

LEGO Bugatti Issues

This is my first post and my first LEGO set. I recently built LEGO Bugatti Chiron with all the features working. I am however having an issue with the rear axle/wheels. The rear brake calipers fall ...
user avatar
  • 51
7 votes
1 answer
511 views

How do I build this robot car?

I want to start using more LEGO Technic, but I'm not sure what the best way is to buy the parts without breaking the bank. I'd really like to make a robot like the ones shown in this video. Making ...
user avatar
  • 203
2 votes
1 answer
270 views

How to fix the Lego Technic RC Stunt Racer (42095) set's turning drift?

I just finished the Lego 42095 Stunt Racer and noticed that there is a slight drift to the right when it drives forward. It works fine in reverse mode - reverses in a straight line. Any suggestions, ...
user avatar
  • 21
8 votes
2 answers
2k views

Insert a gear into a turntable?

Is there a way to insert a 24 tooth gear into a turntable of the 48452cx1 type? --> Is there any model to feature any tooth gear (even smaller) used inside this turntable? This specific ...
user avatar
  • 503
9 votes
2 answers
563 views

How can I build a Lego slope of this exact angle with ideally only legal techniques?

I'm currently building a functional Lego escalator that is minifigure-scaled and with staircases transitioning from flat platform to stairwell. Here's my progress so far: But with the design of the ...
user avatar
5 votes
1 answer
191 views

Live axle + steering

Does anyone know how to make a live front axle (steered, driven, beam axle, preferably with a panhard rod) in a relatively small space, I can't figure it out. This is my rear axle for guidance: Most ...
user avatar
3 votes
1 answer
2k views

Caterpilar D11 (set 42131). Control+ app doesn't seem to work

I just finished my build of the Caterpillar bulldozer D11 (set 42131) and I'm NOT able to operate it with the Control+ app on my iPhone. First the calibrate process begins: Step 1 in that is to move ...
user avatar
  • 1,170
2 votes
1 answer
215 views

What is this Bionicle-looking set?

Can anyone identify this set? Apparently my father has a bunch of these, and he's trying to figure out what to list on ebay. It appears to be at least Lego / Technic compatible, but I don't know much ...
user avatar
4 votes
1 answer
135 views

Looking for a big set of tires and rims for my monster truck - really beefy tires

I'm looking for big beefy tires and rims for my large Technic monster truck. I also need something for off-roading.
user avatar
4 votes
1 answer
387 views

Motorizing Crocodile Locomotive set 10277 - are there any sets that include hub & motor I need?

Crocodile Locomotive can be powered up by using 1 x 88009 and 1 x 88013. Reviews on hubs and motors strongly suggest it is better, financially, to buy them as part of the sets, not separately. Is ...
user avatar
  • 1,389
3 votes
1 answer
144 views

Gearing problem

I have a technic MOC with lots of gears which runs fine when motorized with the Control+ L motor, the motor itself attached to the "dumb" battery box that would have been included with the ...
user avatar
0 votes
0 answers
132 views

How to increase the voltage supplying to technic motor through the Technic hub?

I have four technic Large motor, all connected to a technic hub. I am using the motor to turn some large propellers and the hub is powered by six 1.5 V (maybe less) batteries. So each motor would get ...
user avatar
  • 207
6 votes
1 answer
754 views

Control Lego Technic Control+ Hub via Python

Is it possible to control the Lego Technic Control+ Hub with Python? I have tried using Pybricks but that didn't work well for me.
user avatar
4 votes
2 answers
357 views

Motorized Excavator (8043) set alternatives

I'm on the search for a motorised excavator set and have the 8043 in mind. It is now retired and no longer available. Are there any alternative currently available sets? I have looked at a few options ...
user avatar
  • 41
7 votes
1 answer
163 views

Reinforcing a pair of Bent Double 11.5 Liftarms under Rotational Tension

I purchased a clone MOC out of interest a few months back, this following set. Because it does use clone pieces, I knew there was a high chance of breakage and poor fit, especially in the tensegrity ...
user avatar
  • 173
3 votes
2 answers
166 views

Most cost efficient length for pneumatic hoses?

As the title says, I would like to know what the most cost efficient length of pneumatic hose (including 99021s) is, assuming the average length of each piece is 12cm (4.7") and I can cut large ...
user avatar
4 votes
1 answer
667 views

Can anyone identify these parts? Technic, liftarm connected to a circle

I'm trying to follow a video MOC tutorial but I can't figure out what this brick is. Part number would help.
user avatar
6 votes
2 answers
608 views

Volvo Articulated Hauler (42114) doesn't operate the bucket

I cannot get the rams to lift or lower the tipper body. I suspect it has something to do with the clutch mechanism since all the shafts and gears rotate freely until the clutch is connected. The white ...
user avatar
  • 61
3 votes
0 answers
398 views

Soft rear suspension on Landrover Defender too low [closed]

Can't answer this officially because I haven't enough points but the photos on the only other answer are of the front end, the problem I had on the rear was that the bottom shock absorber brown ...
user avatar
  • 31
6 votes
1 answer
487 views

Any build instructions for vertical Technic/Lego conveyor belts?

I'm trying to figure out how to continuously lift a stream of incoming pieces up vertically, at least 10cm. This is my first real custom build attempt, so I'm very much at a loss on how to go about it....
user avatar
5 votes
1 answer
914 views

I found these images of parts and want to find their part numbers

So I found this lot on the internet but don't trust the seller. What I want to do is find the part numbers of the pieces on the image and buy it from a reliable source. I tried to find it in multiple ...
user avatar

1
2 3 4 5
8