Questions tagged [motor]

A motor is a machine, especially one powered by electricity, elasticity, pressure, internal combustion or some other means, that supplies motive power for a device with moving parts.

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7 votes
1 answer
241 views

What is the best way to connect SPIKE prime angular motor to a wheel

I was wondering if there is a difference in the amount of torque transferred to the wheels from a LEGO SPIKE prime angular motor (45603 LEGO Education SPIKE Prime Medium Angular Motor) depending on: ...
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1 vote
0 answers
83 views

Fit motor to old tractor

I'd like to motorise this tractor I built from an old Lego book. I've 4.5 volt motors. The model is 6 studs wide, the motor is only 4, and since the tractor uses big wheels it would be too fast. Is ...
0 votes
0 answers
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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 ...
0 votes
1 answer
96 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 ...
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12 votes
1 answer
1k views

What's inside the SPIKE Essential small angular motor?

I'm curious about this motor (68488): This motor looks very small. What is inside this motor? How does it compare to the other Powered Up motors?
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4 votes
1 answer
294 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 ...
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1 vote
0 answers
74 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?
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6 votes
2 answers
189 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: ...
7 votes
0 answers
178 views

Looking for a PC controlled motor that allows for very small and precise movements

The image below is a LEGO specimen stage designed for a stereo microscope. I am looking for a recommendation for a PC controlled motors that allows for very small and precise movements. I want use ...
5 votes
1 answer
68 views

NXT - Mirror motor rotation

I'm trying to make a program in NXT 2.0 that mirrors the (manual) movements of one motor to another. I managed to start motor B running in the right direction but I am having trouble controlling the ...
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10 votes
0 answers
220 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 ...
6 votes
0 answers
206 views

Fix Lego M Motor - The hooks aren't budging

I have a Lego M motor that is broken. I'm following the instructions here to try to fix it but the little tabs that hold the plastic frame together just won't budge no matter how hard I'm pushing them ...
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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 ...
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8 votes
1 answer
217 views

Motor problems in 60051

The motor in my High Speed Passenger Train set (60051) has stopped working properly. I just put brand new batteries in and it acts just like if they were worn. Moreover, the little brown capacitor ...
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2 votes
1 answer
166 views

What motor and remote control can be used for LEGO train 60197?

I got the LEGO set 60197 passenger train and its missing the 3 components. The motor, the battery, and the remote. I've tried to look online for it but the only motor I see online is 88011. Is that ...
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 ...
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3 votes
2 answers
424 views

What is inside the LEGO Powered Up L motor?

What's inside the Powered Up L motor (part bb0959c01)? How do its internals compare to the XL motor and the M motor?
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4 votes
1 answer
824 views

Difference between the "Simple Medium Linear Motor" (45303) and the "Medium Linear Motor" (88008) Powered Up motors

What is the difference between the "Simple Medium Linear Motor" (45303) and the "Medium Linear Motor" (88008) Powered Up motors, other than the size and design? Is the performance ...
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3 votes
1 answer
114 views

Can an EV3 power a buggy motor with the NXT to 9V extension cable?

On Philo's motor comparison webpage, https://www.philohome.com/motors/motorcomp.htm, it says that the buggy motor (42908 lego id, 5292 bricklink id) is not recommended to be powered by an RCX as the ...
0 votes
0 answers
143 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 ...
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1 vote
2 answers
396 views

What is the max current for the LEGO EV3 motors (pin 1-2)?

The LEGO EV3 Hardware developer kit says that the first and second pin of output port provides a current of max of 700 mA with 1 A but the motors appendixes don't have the maximum current that can I (...
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3 votes
3 answers
325 views

How to stop or freeze the EV3 large motor in position

How do I stop or freeze the large motor in a fixed position? I have a forklift type attachment that will lift to the precise height, but will not stay in position due to the weight of the attachment. ...
5 votes
2 answers
196 views

How does the 8365 Tuneable Racer work?

The set 8365 Tuneable Racer has tunability as its main feature, meaning the motor's parameters can be changed by adding, removing or swapping certain additional elements. However, these parts seem to ...
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4 votes
0 answers
45 views

How do I sync audio and movement on my NXT 2.0?

How do I sync audio and movement with my NXT 2.0? I'm building an animatronic head and I can't find a good way to sync it with external audio because the internal speaker is too quiet.
0 votes
1 answer
66 views

Program just stops motors and won't move

I'm trying to make a program in the NXT software that turns on the motors unlimited, then waits until something is less than 30 cm, stops the motors, turns to the left 30 degrees and saves the value ...
6 votes
1 answer
501 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....
6 votes
1 answer
1k views

How to run 2 motors at the same time in the new EV3 version?

So I've seen a question that solves my problem in an older version, which I don't think is possible in the Education EV3 Classroom - 1.2.2, which is the one I'm using. I want to simultaneously run 2 ...
3 votes
1 answer
182 views

Does LEGO sell a DC relay for Power Functions?

I’d like to use a signal from a (5V) littleBits circuit to control some (9V) Power Functions motors. Does LEGO sell or recommend a DC relay to facilitate this sort of thing? If the answer is no, I’d ...
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3 votes
1 answer
100 views

What is the maximum voltage for motors from Cybermaster units?

I recently bought a non-functioning Cybermaster unit [part:71797]. As the motors in there might be perfectly fine, I'd like to use them. I could not find information on these motors (as opposed to ...
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7 votes
0 answers
159 views

Oil for old 4.5V motor? (UK)

I've just got my old LEGO Technic motor from my 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-ONE ...
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5 votes
1 answer
168 views

Lego RCX to NXT converter cables not working properly with EV3

I recently got some of these cables(see picture below) to control an old RCX motor. Some things to note before reading on. I tried both the medium and large motor blocks and played around with power, ...
3 votes
1 answer
2k 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 ...
0 votes
0 answers
342 views

The Powered Up app won't connect to my Technic Hub

I have recently bought a Technic Hub and four Powered Up L motors, but currently I only put two motors into the B and D ports of the hub. I downloaded the Powered Up app to a tablet and used the "...
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5 votes
1 answer
321 views

How deep can the axle go in the Powered 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?
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1 vote
1 answer
115 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 ...
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4 votes
1 answer
287 views

What is the power of Lego Powered Up motors (M, L, and XL) and the Move Hub motors?

I am trying to build a setup that includes two propellers that can pitch up and down. I am debating whether I should use two motor to power each propeller and the other two to act as servos for each ...
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7 votes
1 answer
744 views

What is inside the Technic Powered Up XL motor?

What components are inside the new Technic Powered Up XL motor? Is it the same as the PF XL motor, except with a different connector?
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4 votes
0 answers
162 views

Repairing a 12V switch motor

My son caused me to dig up my old 12V lego trains. Surprisingly they mostly work, except for one part: https://www.bricklink.com/v2/catalog/catalogitem.page?P=70026&idColor=9#T=C&C=9 This is ...
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8 votes
2 answers
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 ...
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2 votes
2 answers
1k views

Looking for a way to connect SG90 servo motor to Lego Technic hole in a brick, in order to control Lego train tack switch

After looking at this question: Can I remotly control the points on PF train tracks? I got the idea of controlling the train track switch handle using a servo motor that will be able to move the ...
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3 votes
2 answers
1k views

Mindstorms EV3 unable to drive two motors simultaneously

Yesterday I had the basic driving robot with two large motors, but I could not get both motors running at the same time. I had the tank control programming block, with both motors set to 50% and when ...
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7 votes
2 answers
975 views

Compatibility between vintage (80s/90s) Technic and current parts (motors etc)

I've recently got my old Technic out for my daughter (who's a little young for her own, but her Friends now drive around in a tank). If I start to acquire more, and more sophisticated, motors and ...
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5 votes
2 answers
1k views

Electric motors - what for beginning?

I just got my first Technic joblot and now I am thinking about adding motors. I already have some - cheap ones from Amazon. I attached 1 axle pin to such motor with glue gun, works well except one ...
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1 vote
2 answers
611 views

Port Splitter for EV3 motors

I have searched all over the internet for EV3 port splitters for motors. I have got 4 large motors and 2 medium motors and I do not have enough motor ports for them all. I can usually only find sensor ...
2 votes
1 answer
89 views

How to prevent PF M-motor from springing back

I'm currently building a car with a simple 2-speed remote controlled synchronized transmission, shifted by a PF M-motor. Everything is fine except for one thing, the transmission driving ring is ...
1 vote
2 answers
247 views

How can I prevent my finger from getting injured between gears?

Recently I was building a prototype for a LEGO tank chassis and I tested it, but my finger got caught between the gears, resulting in my finger getting cut. Are there any ways to prevent that from ...
0 votes
1 answer
1k views

Arduino-izing LEGO Technic - and now I need some ideas for the Lego Service Truck 8071

I am starting a project - Arduino-izing LEGO Technic - and now I need some ideas for a car / vehicle to choose. This project starts out as a quest to find a way to combine the ease of LEGO Technic ...
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6 votes
1 answer
1k views

What is the quietest LEGO motor?

What is the quietest LEGO motor? I am trying to make a sort of LEGO dolly for filming videos, but the motors emit a lot of sound. I noticed the train motor is quieter than the other motors I have, but ...
2 votes
1 answer
757 views

How do I run the LEGO Technic V6 engine using a Lego electric motor?

I am not into LEGO, don't know anything about it, so I will try to be as specific as possible. My goal is to spin the LEGO Technic V6 engine (preferably at some realistic RPM's like thousands). ...
1 vote
1 answer
69 views

Can a v1 PF reciever power an XL motor and servo?

I have a v1 PF receiver but don't want to pay $35 for a v2 receiver and I was wondering if a v1 receiver can power a single XL/L motor and a servo.