600 Watt, 3d-printed, Halbach Array, brushless DC electric Motor

[@i-make-robots]

Christoph, your work is beautiful. Not only is it well designed but beautifully documented. Thank you for raising the bar!

[@Jer_Schmidt]

I've been looking for a long time for a homemade motor that is actually useful, and I finally found it. Stunning work, well done.

[@warrenreif5369]

Mr. Laimer, What a great example of engineering work you have posted. It will be a while before any one posts a 3D printed motor with this level of performance and engineering documentation. Thanks so much for your effort. -Warren

[@michealcairns4971]

Christoph, I would just like to say thank you for sharing this impressive motor design, manufacture and assembly with us. It is great to see 3D printing being used in a practical dynamic application rather than just being used for printing vases, figurines and other silly objects. You mentioned that the stators ferromagnetic material reduces the rotational speed while increasing the motors torque. Have you ever tried testing the motor using conventional stator materials (soft iron or aluminum)? It would be interesting to see how this effects torque and overall efficiency.

[@systematicmeansllc]

This specimen is truly something. From a magnetic PLA armature to Halbach stators with no backiron, this video quietly turns traditional motor physics on its head.

[@muh1h1]

Wirklich verdammt beeindruckend! Ich habe meinen drucker inzwischen soweit, dass er sehr genau druckt, vielleicht werde ich irgendwann die STLs kaufen und es selbst mal probieren! Respekt für die Arbeit in Fusion 360, sieht wirklich alles sehr professionell aus!

[@robertpaulson6555]

Ive been dying to see practical applications of the halbach array!!!! BRAVO!!!!!!

[@prassmancreations3168]

All I can say is thank you. This combined with a circuit I have been working on for years have helped me create a 99.5% efficient design. . . . with a few small tweaks I am hoping to achieve over continuity !

[@udeadinasecond5245]

What?! How you gonna comment this and spill the secret sauce

[@snorkfire]

Boy, you’re one smart cookie. I don’t tackling mind a project, but this one is a true commitment!

[@arifanwari3168]

I thought my work was good, even though I haven't shared any, this chap blows me out of the water. Very impressive work and thanks for sharing.

[@victoryfirst2878]

Christoph, you made me a believer in 3-D printing. Keep up the great work and have a great day too!!

[@rgcoldworld5974]

Need 3 turnkey out the box, I could not build this myself, but I can bring my creations to life, thanks 4 sharing!

[@shaunhall6834]

I'm interested in building an electric motor for my bike. Thank you so much for sharing your knowledge!

[@oscarcampbell1242]

It's good to see simple effects utilized like in the Halbach-array configuration in practice! Keep it up!

[@BluesDoctor]

Outstanding work. Plan to study closely and build. Best motor design at this scale I have seen.

[@niokolabs]

Christoph, wir hatten letztes Jahr an der Mini Maker Faire im Dynamo kurz gesprochen, ich bin der mit dem Elektro-Aussenborder... Deine Arbeit ist absolut genial, Gratulation zum grossen Motor. lg Nico

[@hermannalberts6038]

Swiss engineering rules! Swiss engineers are the best in the world! Thank you for sharing this great work!

[@H3xx99]

If you could 3d print a rotary encoder and a gear box Integrated into the casing, you could make a 3d printed servo motor, and with that, you could make a mostly 3d printed 3d printer... that's a rabbit hole that is very tempting to leap into... Edit: I've been waffling about getting a 3d printer for a long while now. Your video on this just made me decide to save up and get one.

[@TheNeokorben]

YOUR WORK IS VERY CLEAN AND VERY PROFESSIONAL,THANKS

[@chris_1337]

This is beautiful engineering! P.S. Bundle a couple of turbofans powered by those with a harness you can get in and a remote, put it on kickstarter, watch the millions roll in

[@schaukelnohneende]

Ich schmeiß mich weg vor Bewunderung. Was für eine schöne Entwicklung und vor allen Dingen, sie fasziniert und motiviert zum Nachdenken, was man daraus alles machen könnte. ... natürlich mit dem Urheber der Demonstration zusammen :-)

[@deraquateichschlangenfunkg46]

klasse, großes kino, so einenoder ähnlichen motor brauche ich für meinen windgenerator für die stromerzeugung ! klasse, super gemacht !

[@r.taylorgarlock560]

Wow--well done! This motor was my first thought when I saw your first MakeSEA motor. Looking forward to making my own when my printer arrives.

[@halberveganer4418]

Fusion 360, tolles Programm hab ich auch im Einsatz. Klasse Arbeit, gefällt mir sehr gut

[@paulc1638]

I caught this vid on 'Instructables' and my first thoughts were 'here we go again another vanity vid claiming to be instructive' but this is brilliant, I'll need 2 or 3 viewings to fully understand the design and build (ok ok, a couple more than i admitted to). This definitely worth looking into for a couple of projects i have in mind.

[@jrmead]

Very cool. I will be buying the files from you with the hopes that you continue to innovate and expand on this idea. Keep up the good work

[@Noneyobusiness851]

This is incredibly beautiful work I currently have no need for an electric motor of this type but I'm tempted to buy one just to have the craftsmanship.

[@Javierm0n0]

this is really well done man. I can't wait to see what else people will come up with to push this tech forward.

[@DataLog]

Nothing. Everyone is hiding their projects. They're acting like university assistants who don't want to give you materials to study, so they make sure you can't be better than them.

[@terminalpsychosis8022]

That is a very interesting way to produce huge north spikes. Love to see this in combo with Bedini circuitry to collect the collapsing field.

[@Spaghetti775]

That stator is beautiful. Wonderful work.

[@CrzyZeke]

This is one of the coolest prints I have ever seen! Subscribed!

[@finophile]

Mate, I'm nowhere near ready to do this, but your work is exemplary and detailed to levels which can only be called fatherly love. A kW ... OMG ... I want one for each wheel on my scooter

[@Harrzack]

I must add my voice to the other "Thanks" - a beautifully executed & documented project!

[@mrcharming5053]

Love it and the use of a 3d Printer... Genius 😉

[@victormicha2488]

Excellent Videos. Congrats!! (Very clear and interesting with no stupid music to distract...)

[@JohnSemmens1]

Very skilled, very professional work, Christopher.

[@dominicnightingale8150]

Hi Chris, I purchased your plans and ordered all the parts but I noticed you didn’t include any equations regarding the design of the motor, like how you chose the magnetic field strength, nominal voltage, torque etc. I am really interested in building an electric motorcycle but it looks like I’ll need to design a motor with a much higher torque because simple gearing won’t be adequate enough. If you could be so kind and share your modeling equations that would be awesome! Thank you for this awesome design, very excited to build it!

[@felixmoure11]

great work christoph i remember when we talked about the desing of the orange motor, you went so far... nice work!!!

[@TRAJANO42000]

A question. Looking at the images it seems that the engine was very cogging and that would detract from performance. Without being a specialist in the field, have you tried to ensure that the group of stator magnets are inclined with respect to the motor axis? I think that would greatly reduce the cogging that I now see the engine has.

[@عليمحمود-ب9ص]

Sir please I want a small but great service for me. If you want to help me send me a message via WhatsApp [phone]

[@borodade]

Sehr schön und mit viel Liebe gemacht. Respekt!

[@akargcoldworld6757]

Brilliance in Hardware , blessed be

[@onlooker251]

Congratulations on the design and your skill in producing this motor. Thanks for sharing this. I'll look out for more videos that you make. John

[@fjore_starseer]

For future versions it can proof good to think about motor cooling especially when the motor is used for static applications. You can easily do that by shaping the venting holes in the rotor like a fan/turbine to suck air the from front between the rotor and stator.

[@ChristophLaimer]

This motor actually has ventilation holes, which work like a radial compressor. Air is guided on top and bottom of the copper wires from one side to the other. Of course the cooling only works with a certain rotation speed. At very low rpm a secondary fan is needed.

[@ripdapip5000]

i wonder if ceramic bearings would be better, they usually spin faster and hold temps better, but would also depend on cost per bearing i guess. im about to get my 3d printer so i may downscale this design to two motors and 3dprint a plane body as well, will take some effort but ill figure it out

[@jansolovsky6298]

Naprosto úžasná konstrukce. Perfektní provedení.

[@obpinkslip]

This is amazing work and amazing presentation of the development process. The 3D model of the winding for me was the most impressive!

[@fjn667]

The coolest thing i have ever seen. I must try this

[@ahaveland]

Excellent work Christoph, I think Flitetest and RCModelReviews need to see this. Wrapping the rotor and binding with slightly pretensioned kevlar or carbon fibre would give me a bit more confidence that it would hold together at speed! The magnetic PLA sounds like an amazing material, I wonder if the particles inhibit eddy currents in much the same way as traditional laminated stators and reduce losses. HobbyKing produce a 10kW motor of a similar size for a few hundred euros - would be interesting to compare the windings and construction and learn how it deals with heat removal. 3D printing gives so many possibilities for winding schemes and topologies - exciting times!

[@ChristophLaimer]

I also like the possibility to "play" with winding schemes, AND the possibility to do this experiments without the need of complex machinery.

[@jackripper5240]

Nice work Christoph!

[@RodrigoSantos-jl3pc]

Hi Cristoph, excellent work!! This motor is awesome!

[@cripplingdepression8889]

This is something I wanted to make make for a long time and you nailed it GG

[@MrPDawes]

A really fabulous piece of engineering. Just proves what you can do with 3D printers. On the overheating comment, could you not print a cooling fan inside the motor to draw air in? I see these on many induction motors, usually on the outside of the motor though with a cage around it.

[@benjorgensen1]

I think heat would be a problem for the stator. unless it's ideally made from a material that can be uv hardened afterwards. don't know if that specific filament exists but it would be needed if you wanted to use this motor for anything hardcore

[@boophillips8763]

This is so wonderful! I absolutely want one to play and tinker with!

[@fritzoskarloehle3174]

Im ashstonished by your work , patient and details ....

[@samykamkar]

Awesome!

[@kzhu]

, but most of all, Samy is my hero

[@aaron41]

This is a really neat bit of 3d printing. I'd love to see a power output and efficiency comparison without the halbach array.

[@rekhart6184]

You are a true engineer.....nice!! Can you build a motor of 1000kv or any other near kv rated readily available brushless motor and compare both 3d printed and market motor!! Thrust results and power consumption, efficiency stuff like that... people would really look forward to see such things!!

[@Jay0neDE]

how would such a motor perform in terms of temperature stability? would you have to expect deformations as load gets applied to the motor over a longer time?

[@ShaunHusain]

Jay0neDE not sure if it was mentioned which plastics were used for the housing and parts outside of the rotor but I'm sure the answer here is it depends on the plastic used for the housing. I imagine if you need to sustain a temperature around 200C then you'd want some type of nylon with or PEEK or maybe even PTFE type of thermoplastics (ABS or PLA will definitely be gooey at that temp). In my limited experience with printing with nylon this can be somewhat challenging due to the extreme thermal contraction when the nylon goes below its glass temperature. I suppose the rotor with the windings will have some temperature deformation as well but the windings may help to give it more rigidity (just speculating).

[@AtlasReburdened]

Now its time to print one specifically for use as a dynamometer. That way you can keep track of how design changes effect efficiency. I bet it also wouldn't be too difficult to design a small rod with a self centering clamp on one side to test holding torque. it looked pretty strong when it was made to cog a the end of that one shot. Splendid work so far. If you could automate winding you could probably take an entire industry by surprise.

[@valveman12]

Christoph Laimer That is a very impressive motor you built. Any plans to build a motor for an ebike?

[@Chaos------]

He might not but I do, Im gonna use Kevlar impregnated filament to dramatically increase the strength and durability of the housing.

[@okay8632]

@@Chaos------ where do you buy it from (3dxtech?)

[@eko653]

@@Chaos------ did you ever build it? I wanted to build one but kinda lame to start from strach

[@Chaos------]

I opted to use an off the shelf kit to convert my bike. Its fast af

[@eko653]

@@Chaos------ what kit u used and what battery how much ah and what's the mileage?

[@norm1124]

Hallo Christoph, ich hoffe Du bist gut zurück im Brotjob nach dem Sabbatical. DER MOTOR IST HAMMER ♥️♥️♥️♥️

[@ernststravoblofeld]

Beautiful! Inspires me to get back to work on a coreless induction motor. Thanks.

[@peterxyz3541]

I need to build this for my RC plane!!! Thanks for the video! 👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼❤️❤️❤️❤️❤️❤️😂🦄🐶👽👽👽👽

[@juminfan1731]

Now that the 3D model file URL cannot be downloaded, it prompts a security issue and is blocked by the browser. Are there any download addresses?

[@m93sek]

Amazing. How did you model the wire?

[@ChristophLaimer]

It's a "sweep" along a path. Actually only one turn per coil with a hole bundle of circles.

[@mdhafiz00]

was asking the same thing. :)

[@engineerhd5672]

3D path?

[@ChristophLaimer]

Yes, a 3d-path. I created 2 sketches/views from 2 different angles, extruded and intersected them as two bodies. The common edge of the resulting body was used as a 3d-path

[@zachnunes123456789]

what program do you use to model?

[@hebertsbonilla7405]

Very professional video. I love the design of your engine.

[@dongguanfreerchobbyco.limi3655]

great job. Give us a lots of knowledge to develop our own motors.

[@edwardcase]

Different types of plastic? 3 - d printers use a type of plastic. Can they possibly develop a printing material that will help dissipate excess heat? Graphene perhaps? Just a thought

[@greggeshelman]

I heard vibration noise when you ran it without a prop. How is the balance on the rotor without magnets installed? You could make pockets on the inside, under the large magnets, for inserting something to adjust the balance. Perhaps pieces of plastic printed at different infill % then held in with cyanoacrylate. I'd order more than enough magnets for the build then sort until they were all very close in mass and power. Combined with altering the rotor design for balancing it should be possible to have a higher margin of safe RPM. What about a lathe turned aluminum sleeve for a light press fit over the outside of the rotor? Epoxy it in place. That would act as a barrel hoop to hold the rotor together at higher RPM by preventing the plastic from stretching then breaking.

[@ChristophLaimer]

kzbin.info/www/bejne/aaGqamONp8qKr9E 7000 rpm is already a problem for a cheap 50mm ball bearing (it get's hot). But you're right, knowing that the plastic is stretching is scary. Should do a long-time-test - maybe the motor breaks even at medium rpm, if it runs continuously for some days/months/years ...

[@Priyodarsono]

just a little input for your idea. replace the normal ballbearings with the ceramic one. it will reduce the drag effect & can spin in higher RPM

[@serifokur]

I found your channel by a chance while watching 3d printer videos. How skillful and self-educated you are, I liked and appreciated you very much. Also, your videos and explanations are very excellent. I was fascinated. If you come to Istanbul, I would like you to call me and be my guest.

[@klausbrinck2137]

Ist es nur mein eindruck, oder es gibt schon paar richtig krasse 3d-druck-youtuber in deutschland??? kenn ihr cnc kitchen??? kenne euch erst seit ein paar tagen, und ihr seid schon jetzt die besten soweit...

[@vwbus65]

Dieser ist wohl ein Schweizer ;-)

[@klausbrinck2137]

ist mir bei nem anderen video auch aufgefallen... ;-) musste schmunzeln, ob meiner fehleinschätzung...

[@ChristophLaimer]

snägschtmal redi schwizerdütsch ;-)

[@billbruce3408]

Absolutely beautiful work sir. Very inspiring.

[@bitsinmyblood]

Very well produced video and narration!

[@ShaunHusain]

Really awesome project idea and execution.

[@beverley8987]

MAGIC WORK MOST INSPIRED THANK YOU FOR POSTING THIS

[@donaldwright2426]

Nice peace of work, just beatiful.

[@ehsandaneshvar]

its really amazing! i can see lots of great ideas about a more efficient BLDC. Congratulations man.!!!

[@bayenne5b]

Have you thought of using rotor coils in the future? I haven't calculated anything, but just knowing most conductors have a lower density than ferromagnets, I think you might get up to higher speeds with the same 3D printed construction without failure

[@LoganT547]

Awesome! This motor would be great for something like a washing machine or a lathe.

[@stephanepel8649]

bought the STL today the site work preferctly and you need like 1h before they send you the File. everything went smoothly for the purchase @Christoph Laimer great work !

[@pauldamiandumais]

Great work and very well presented. An awesome project for students to replicate and learn about motor design and 3D printing. Thanks

[@DRAGUNOV1902]

Maybe you can modify holes on top of rotor, so when motor is working, they will work basically as propeller and gather air inside of motor for better cooling of whole motor?

[@DRAGUNOV1902]

So, just to put thoose holes little bit under angle

[@jaimesmoran4136]

Would be awesome to see these in the electric skateboard industry.

[@wolfgangbeginners-mind2853]

wait until it heats up.... or is driven improperly. But it is impressive that a printable Fe-Mag product works at all. Kudos!

[@ruicharles8952]

Man, i think you ar changing the world. this is so awesome that a really nedd to do that here, because we're still spending plenty of money with energy bills

[@AdvancedVisuals]

Nice work, but I suspect the construction would warp under prolonged load due to the plastic softening from generated heat.

[@RafalAndHisThoughts]

Really nice design! I like it a lot

[@kingjamez80]

Excellent engineering. Well done.

[@lancemenke2728]

Your halbach application I need to check out standard construct for the bell/mag section very interesting a one turn wind minimum current to spin spec is?. wind dc resistance next. nice build. Single reduction step or direct drum drive as diameter increases pole count goes up and KV down smoooooth torque silent power. with this optimized many issues can be solved. nice well done

[@eduardoloboarteaga2006]

Amigo un abrazo desde Colombia me podrias hacer el favor de indicar me su motor que fuerza tiene para levantar peso deseo fabricar un dron de 6 motores para trabajo agricola para levantar unos 80 a 100 kilogramos me podrias ayudar mil gracias estare atento a su respuesta , su canal es lo maximo

[@RenatAbaidulin]

Awesome! You did a great job!)))

[@MurcuryEntertainment]

Just did the math... that's a 2/3rd Hp Motor... that's amazing. I would love to use a motor like this to construct a lathe or other power-tool.

[@dark-starchemistryfabricat2405]

Hey you seem like a guy that knows your stuff... Do you think two of these motors would be adequate to use in the build of a Jugs Machine (Football Launcher) ??

[@tonyppe]

great work. I love the sound these motors make.

[@RaphaelAguirre]

Very impressive sir! not a small achievement.

[@78bakelit]

Schön gemacht, habe Sie schon mal probiert einen Ringkernmotor zu bauen, wie Nicola Tesla es gemacht hat, wie da wohl der Wirkungsgrad ist ?

[@Shaharskywalker]

Wow very good job! thank you for the efforts and making the video for us. Really inspiring.

[@PhG1961]

Very impressive ! Excellent video !

[@draggonhedd]

I have an idea for the coil core. What if you simulated the laminated metal construction of a standard core by printing in with a dual nozzle system? Alternate layers of conductive filament and an insulator. Have one roll of conductive material on one nozzle, and another of the nonconductive variant of that materal.

[@ChristophLaimer]

The magnetic PLA from Proto-Pasta is not conductive. And the conductive filaments are not ferromgnetic (usually these filaments contain some graphite).