3D printed axial brushless motor for drones

[@Bob_Adkins]

N40-N52 button magnets can make STRONG motors and generators. They're awesome.

[@videos40058]

what is this to do with stabbing?

[@carmelpule6954]

Very nice design. The waveform is quite nice considering the simple coils, and the fact that the coil has not the same size turns makes it like a concentric winding which rounds up the waveform and hence what looks like a sinewave. Congratulations.

[@ZeroInDaHouse]

Just as a safety reminder at 2:00 the way you are holding that motor, if it were to explode it would cause some serious damage. You should never trust plastic especially 3d printed.

[@cvspvr]

ur boring

[@dustaneichler5090]

perhaps. 3d prints hardly ever fail in that direction, as the layers are going the other way.

[@beawareofthegreatjjs]

Really good point 👍

[@abhishekgourav6144]

@@dustaneichler5090 but still there's a chance it will melt

[@MrPizzaman09]

Thanks for saying this. As mechanical engineer, this looks really dangerous. At 7k rpm, a magnet would be traveling around 100 mph

[@shaungarbry88]

I dig that background music. Good choice!

[@swa9998]

Please let us know the efficiency of the motor.

[@moses5407]

These are great projects! Are any of the design files/production methods available?

[@freakinccdevilleiv380]

Excellent 👍 Thanks for the specs, this gives a perfect idea of what to expect. The torque is great for the size and form factor.

[@dominiqueharribey8723]

À scientific article including test will be published in a few months

[@drewartturbine]

do you have a link to that paper?

[@TheJavaSync]

Published ?

[@mistervsk952]

@@TheJavaSync nah, i made some research and found his other 2 articles but not about motors

[@TheJavaSync]

@@mistervsk952 link pls :)

[@sc0or]

0.13Nm @ 100W seems to be a good value. Well done.

[@frederickgrief9582]

Can you show the wiring diagram for the double-sided stator? I am having difficulty understanding how you wired the motor.

[@ottokueng4236]

May be you can make the Stator as a printed circuit with multilayers. I saw simular motors decades ago with printed circuits. At this time strong permament magnets didn't exist.

[@harribeydom]

more informations : oatao.univ-toulouse.fr/25915/ A new video with a two stators & one rotor axial motor for drone soon avaible

[@bingosunnoon9341]

I built this same motor ten years ago except mine had laminated iron cores instead of air cores like this one.

[@satipsrl5207]

Tres joli , appasionne des helicos rc , qui sait si on peut faire tourner le rotor principal d'un modele de 5 kgs.?

[@shahzadhussain8169]

Excellent work, could you please let me know the details of the winding connections? Thanks

[@------country-boy-------]

up in heaven Tesla just said "Fucken Sweet Bro" - right in front of god and everybody.

[@premalathalatha3587]

The mechanical in put works out to 95.3 watts and hence the out put wiil be less than that only

[@qbitsday3438]

Hi How are the coils connected pls show us any document on the coil connection.

[@916senna]

Where are the iron core plates located, you can’t see them in the assembly

[@erikt81a]

c'est un beau moteur, félicitations !

[@Mirandorl]

Haha wonderful! You make it look so easy! This design looks less complex to make than a halbach array type motor. What is the difference with the coil arrangement here and with the type with the "wheel spokes" that you sometimes see?

[@jimmihenry]

Where did they put the iron core???

[@dominiqueharribey8723]

There is not Iron core

[@jimmihenry]

@@dominiqueharribey8723 Thought i saw it in the vid there. So no core, thank you,

[@jesterman1302]

Best feature of this motor is the slim profile... And who cares if the enclosure is 3d printed if you don't know how to correctly wind the coils and position the magnets...

[@OKFrax-ys2op]

Now that’s a groovy music

[@chusdiaz9160]

😂😂Eso es lo único bonito

[@drewartturbine]

Is there a link to the paper published on this motor available? And hopefully one not behind a paywall?

[@doctorpurple5173]

You can get around most paywalls with something like Get Hub

[@deletesobaka]

That's exactly the same construction that was used in lot's of floppy drives, except for they used ferrite magnets in that time.

[@revimfadli4666]

Really? They had axial flux before it was cool?

[@joesilva4140]

Thanks for posting this. Could you tell me the connections between the first set of coils and the second? Any diagram or link to one? Thanks.

[@DigBipper188]

There are 2 possible wiring configurations you can use with brushless 3-phase motors, these are called Y (or "star") and Delta. because of the way the coils are linked. In a delta configuration, you wire each stator phase in a triangular pattern. For this example, I will name the phases Y, U and V, similar to how they're named on most controllers. Your typical Y configuration will have a layout like this: Y to U U to V V to Y Which creates a triangle, hence the name "Delta". In a "Y" configuration, all phases are commoned at the neutral point and then the Y, U, V "hot" connections go to their respective terminals on the controller. This configuratoin has a fourth wire, which as mentioned is the neutral that must be connected to achieve commutation of the motor. Also, it is worth mentioning that you can greatly improve the torque and efficiency of both configurations using a sensored speed controller, which uses hall effect magnetism sensors to determine where in its rotation the rotor is so it can more effectively time when a coil should be energized and in which polarity. Again, this timing will improve the torque and efficiency of the motor, making it run cooler, quieter and in some cases, faster. Some additional info can be found here: kzbin.info/www/bejne/gZ-aYYeZbst5orc

[@jeffreyblackport9208]

can you put the stl file up so others can make their own.

[@JF32304]

how about you learn the software (probably Fusion 360) and build your own and not depend on others to do work for you.

[@FredoCorleone]

Jesse Fritz What the hell this comment has to do with the request?

[@rock3tcatU233]

@@JF32304 Fusion 360 isn't a serious engineering CAD tool.

[@JF32304]

ⵔⵓⴽⴰⵜⴽⴰⵜ umm okay. This what out of left field. It's the tool he used to create the STL. This is why I bring it up.

[@JF32304]

Fredo Corleone did I trigger you? Get the software and build your own!!! Stop depending on others to do work for you!!!

[@Derekisastro]

Any updates on the question asked? Efficiency? Testing data? Power rating?

[@bArraxas]

Efficient? 80%? Thx

[@harribeydom]

around 80%

[@revimfadli4666]

What if you add ferromagnetic winding cores, as well as configure the rotor magnets as halbach arrays? How much improvement would you get?

[@Tore_Lund]

I can answer that: If you put iron cores in the windings, you gain peak power and torque, but decreases efficiency because of eddy current losses( a lot). Making a Halbach array will almost double the magnet flux, so twice the torque and have less field lines leaking to neighbouring magnets, so higher efficiency and more sinusoidal back EMF. My question is: What is the winding inductance with bobbin coils used here?

[@revimfadli4666]

@@Tore_Lund thanks! By inductance do you mean the mutual inductance among phases?

[@Tore_Lund]

@@revimfadli4666 Yes, I'm talking about the inductance the controller sees. In a Y stator, it is the coils per phase *2 . The problem with coreless axial flux motors is their very low inductance, which makes it very hard for the controller to control current and by that has a lot of ripple, which is both hard on the controller and the windings.... but here it looks like it can be controlled easily, so it has something to do with the number of turns per coil.

[@revimfadli4666]

@@Tore_Lund maybe the overlapping windings are cumulatively coupled, which would increase inductance while also adding their fields together. The real question is, if sensorless ESCs are used, would the mutual inductance on the unpowered coil interfere with the back-emf sensing?

[@Tore_Lund]

@@revimfadli4666 That's a good question also. Let's hope someone replies to both!

[@darkshadowsx5949]

Power: 100W at what Voltage / Amperage? kv rating? winding? wire gauge? Ketchup? I'll just remake it with a better stator housing and mount then do my own tests. :P

[@Tba-vy8ou]

You done yet?

[@faruk-can]

Do you check equality of forces of magnets?

[@robertshellfoon473]

Very impressive I am going to build one its good you also provided the speed.torque.power,diameter,length and weight good stuff, 3d printed stuff does fly apart under load or exceed the limit good fun...done safely of cause...anyhow cut the chit chat the experiments must go on...we are working on probable ways to reinforce 3d prints when we crack it we will let all know.

[@lokekahfatt6301]

Where did you put the iron core?

[@nitrousman8882]

Have you determined the Kv of this motor? Have you I looked at your site but didn’t see clear information about the electrical connections that you have used. It looks like you’re using a double coil arrangement. Is that the case?

[@valveman12]

Nice project. I can also see an application for a small wind generator.

[@attilarivera]

Frank Blackcrow same here. 👍😊

[@LoganT547]

Or a direct-drive washing machine.

[@premalathalatha3587]

there two set of six coils then hoe three phases? Details of coils and total out put voltage not swown which is a basic data required

[@yuan.pingchen3056]

how about it's efficiency ? what's difference compared to tipical motor ? is it better than dyson DC motor?

[@fffingenieria]

very nice proyect, I need design a motor axial tanks for your video.

[@neutrino4377]

What is this motor diameter? What about the heating issue?

[@chusdiaz9160]

No es un diseño bien hecho ,solo es su 👉 diseño ,sin cálculos para optimizar ni cálculos para alta eficiencia,un simple motor casero que le hizo su impresora

[@sarahasmatouhami4850]

Excellent travail en si peu de temps.

[@offgridd]

Nice design!, sinus waveforms looks neat!. Am I correct that each phase has two opposite coil deck coils in order to match 12 x 30 degrees to 4 x 90 degrees of the magnet pairs?

[@harribeydom]

exactly

[@perryunderwood4601]

Geat work. Could you please give me some more info on this topic ? Big learning curve going on.

[@lederhosenhansi3473]

Random youtubber builds amazing Airplane from scratch. Any University has not even discovered Brushless Dc motors

[@joshmattozzi9383]

Vous devriez envisager d'imprimer le stator avec du PLA ferromagnétique de Protopasta pour aider à saturer le champ. Désolé pour le français pauvre, j'ai utilisé le google traduit.

[@dragonhero7975]

Dominique Harribey bro do you have the file.

[@apsysspace6764]

This but counter rotating?

[@tonyfernandes7592]

Bonjour, félicitations pour le projet. Quelle est la différence de performances avec et sans les deux disques externes en acier (iron core)? Merci de votre réponse. Tony

[@ghiathkamel2158]

Is this design better than the normal brushless less motor

[@bricodom31]

it's different with two airgaps and ironless

[@pavanra7453]

Will this act as generator too?

[@harribeydom]

sure!

[@pavanra7453]

I want to buy this! Is it for sale or please let me know where I can buy customised 3d printed auxial motors / generators.

[@pavanra7453]

Hi, please reply, how to get this 3d printed parts?

[@Zloywowplayer]

for what you use iron core? it possible to build that type of motor without it?

[@harribeydom]

we make two versions, with and without iron cores. Magnets are 5mm high without core and 3mm with, so the performances are quite similar.

[@Zloywowplayer]

thanks

[@perryunderwood4601]

Do you find that there is also magnetic attraction with the iron cire version ? How does that weigh up ?

[@ebbeota]

Could you please explain how you estimated the static torque?

[@harribeydom]

In the video we just made torque measurements by pushing with a lever on a balance. Since we have done more serioustets with a real bench measuring torque.

[@ebbeota]

@@harribeydom thank you. We are exploring the fault modes of a BLDC and we need a way to estimate torque on a budget

[@bicio330]

Je voudrais reproduire ce moteur dans mon garage, est-il possible d'avoir des enroulements et des entraînements? Merci

[@milxl]

Bonjour j'ai essayer d'en faire un plus simple avec des bobines rondes et un ESC mais ça ne tourne pas j'ai essayer étoile et triangle auriez un diagramme de branchement ? est ce que les plaque de fer sont nécessaires ? Merci d'avance !

[@milxl]

en fait je veut un moteur RC axial de grande taille brushless et sensorless

[@Spirigold]

Tu peux faire les deux, câblage Duyunov/Slavyanka, çà devrait dépoter!

[@pavanra7453]

Hi, do you sell these motors. I needed a few customised ones.

[@yelectric1893]

what is a core?

[@dingsens2810]

Hi, I am currently testing this principle with another design: the magnets in the middle and outside coils from both sides. the coils wrapped around some screws. I will soon publish my models if someone wants them

[@cjlooklin1914]

I want them, how can i contact you?

[@dingsens2810]

write me a mail to [e-mail] (you dont have much time... it will delete itself in some minutes)

[@dingsens2810]

ok its now active for 6 hours

[@cjlooklin1914]

[e-mail]

[@dingsens2810]

​@Heads Mess yes, screws. At that time (over 2 yrs ago) I did not have access to a cnc mill or a laythe, so I had to use something... fortunately screws come in all shapes and sizes. I remember, that when I watched the video, I also asked myself why he has no ferrite inside the coils. Times have changed. If you are interested in this, I suggest to watch the videos from Christoph Laimer. He made a really awesome motor. Although it is cool to say, that you have built something completely with a 3D printer, I think different today, as I would rather combine the strength of additive and subtractive manufacturing where it suits best.

[@Radiosamu]

How do you get that nice sinusoidal back EMF instead of a trapezoidal one or something else? Is it because of the coils' shape? Great work!

[@bricodom31]

it's because coil's shape and circular magnets

[@perryunderwood4601]

Very interesting. Would you say it is the two different shapes apposing giving the result ?

[@Blackline60]

Han depuis le temps que je cherche une vidéo sur "comment faire un moteur pancake". Très bonne vidéo ! Vous pourriez en faire une avec plus de détail technique sur la réalisation d'un tel objet ? j'vois que vous utilisé un oscilloscope, pourquoi ? Pour verifier la triphasage ?

[@rafiq65922]

Sir, I want to make single phase generator with same theory, that give 500 W , Is it possible ?

[@vedsookrah5451]

Buy a module

[@SpaceMonkey945]

Quelle est la musique que vous utilisez svp ?

any news on the motor? its 3 years?

[@michelelaghi9193]

Nice stuff and nice video but am I right to assume the following ? 7000 rpm / 60 = 116.67 rot/sec => 0.13*7000/60 = 15.2 W which means 15 % Efficiency ?

[@sanch411]

P [W] = Pi/30 * n* M =(3.14/30)*7000*0.13 = 95.24W maxon.blaetterkatalog.ch/b9991/catalog/index.html?data=b9991/b999111&lang=d#21

[@casperx102]

what is the bg song name?

[@DynamicEmpireInc]

STLS?

[@billasamsandeep]

hi can i have the detail measurements of motor

[@zaildarkuldeep8451]

Good job nice. Thanks

[@afsanehmn4067]

please share the 3d print files

[@umarbilalumarbilal3183]

How to convert 3phase dc t0 single phase dc please inform me

[@HandOfSatan]

Thats the best thing that I've ever read :D

[@NicozStrat]

amazing, is it controller sensorless? good job, i love it

[@Dbiza]

Moteur asynchrone à cage d'écureuil.

[@sanaali3875]

Plz share the 3d design.

[@hyperhektor7733]

not bad :) , but i would love to see a 0.5-0.6Nm version

[@azbukaChisel]

How to wind it????

[@princedemiterios2488]

Perfect.

[@TheReyzahadi]

nice tunes

[@brunof.damasceno7936]

Could you give me the stl of it?

[@mattivirta]

can this made agricultural drone motor ? i need made cheap, 170KV motors 8 pcs. because not can buy super expensive strong motors can fly whit ower 20 kg water tank.

[@juliocasini6018]

Good job. I am professor and i would like to bring this idea to my class room, do you have a link for a paper available ? or a stl files for 3d printer ?

[@harribeydom]

A phd thesis started on this subject in laplace laboratory. The paper will be published as soon as possible and then I will give the stl files.

[@edwilliams9914]

@@harribeydom Please do!

[@umnLoofah]

@@harribeydom Hello, I am also a professor looking to build such a delightful small motor for class projects. Have any papers been published on this work? Have the STL files been published yet? Thank you very much.

[@harribeydom]

you can find paper here: hal.archives-ouvertes.fr/hal-02544407/document or here : hal-univ-tlse3.archives-ouvertes.fr/hal-03504041/document

[@umnLoofah]

@@harribeydom Thank you very much. Any chance you are able to release the STL files for these prints, the original design files from the CAD tool, or a bill of materials? Thanks!

[@carlotheatheist]

1:07 you're such a rich person. That Tektronix oscilloscope was expensive than keysights oscilloscope.

[@olivierc4691]

Bonjour, jolie réalisation! Par contre, je ne comprends pas où sont placés les entrefers?

[@olivierc4691]

Ok, merci pour la réponse!

[@ЮраГра]

Классный брушлесс

[@implosionacademy-8626]

great video ! how much turns per coil ? and the wire gauge.. thank you ^__^

[@mackenzierynebagtong8549]

Someone will make a metal version of this.

[@santialvarez9475]

emrax motor

[@slevinshafel9395]

es una chapuza. pero como prototipo o para enseñar a niños de 10 años no esta mal. Su eficiencia que sera de 50%?

[@michaelhayes7849]

Please give us a coaxial motor set. We need them to advance the art. Also, a 3D vector engine mount for the coaxial motor set would help tremendously.

[@enriquesalgadoaceves9017]

That would be awesome for a small wi d turbine if it were 3 phase. For a trickle charge.

[@kumiwamakiwa8784]

👍👍👍

[@lram2366]

How were you measuring your torque estimation? Kind of looks like it's bumping on a scale? Interesting design, looks like it came out great! Have you tested it in a drone?

[@m.moncada2693]

it would be interesting if there were efficiency measures (input electric energy vs output mecanical energy at diferent speeds, loads and temperature).

[@ANTONIOSTAR]

Esquematic please?

[@nobocks]

Manque plus qu'un kit pour acheter à pas cher les parties non imprimable et ensuite ont va pouvoir ce fabriquer des imprimantes 3d pour quasiment rien !

[@pavilpezinsky3914]

This music: Chowder: "im not your boyfriend!"

[@serjaocvt9726]

very nice.............!!!!!

[@wdtripps6537]

I bet you can't do that again

[@muhammadshah7349]

superb

[@nicolasbug]

Le CNRS me manque... #stageGrenoble

[@SERGEY-KACHAN]

✓ Науч. Студия ✓ Sergey Kachan: kzbin.info/aero/PLlEX99xZE8qOvEV7vDZf_oAkyCOrS1p-z

[@aidenhad4991]

I have the same transmitter as you :-D

[@ahtypique]

Bonjour, avez-vous éssayé de faire fonctionner votre moteur en tant que génératrice ? je serais curieux de savoir ce que pourrait être la tension à vide et en charge à divers plage de rotation. Cela m'intéresse car je suis à la recherche de pico générateur pour mon projet de turbine hydroélectrique => hydroturbine.info/ Merci

[@harribeydom]

oui vous apercevez les fem sur la vidéo quand on entraîne avec la perceuse mais on n'a pas essayé de lui faire débiter du courant.

[@ahtypique]

Avec 1.68 V entre phase, c'est ça ?

[@harribeydom]

oui ce qui correspond dans la version sans fer à 0.019 v/rpm

[@UPR91]

Si tu veux booster la fem (et un peu le rendement), tu peux mettre de l'acier magnetique (le mieux étant les petites plaques composant un transfo) au centre des bobines. Si tu veux encore doubler la fem, prend du fil 2 fois plus petit et fais 2 fois plus de tours. Mais ce sera au détriment du courant divisé par 2.

[@eletronicaematematicaclovi9453]

Fantástico