What’s Inside a 5hp 3500w 72v Electric Motor ? 3 phase induction

What’s inside a 3 phase induction motor?

[@caballopalido]

THESE ARE THE KINDS OF MOTORS MY WIFE'S LOVER WORKS ON

[@ryanjhi2224]

It is three phase but not induction. Permanent magnet synchronous ac motor or sometimes called brushless dc same thing. It also has hall effect sensors for detecting rotor position

[@michaelkhobbs741]

Actually the motor is a bit of everything it's a brushless brush DC induction magnet motor using the motor controllers or troller on the motor controller it's really confusing that's for sure.

[@grimfpv292]

It's BLDC, or 3-phase permanent magnet motor. It needs a ESC to control the magnetization of the stator coils to make it spin.

[@chickenmanatvtuft8283]

@@michaelkhobbs741 i agree

[@chickenmanatvtuft8283]

@@grimfpv292 no shit, and please call it a speed controller not a E.letronic S.peed C.ontroler AKA esc

[@grimfpv292]

@@chickenmanatvtuft8283 Why not ESC? If anyone want to dig further, ESC is what they'll have to look up.

[@lucienbarmet5525]

This helped me a lot thank you!

[@kundanmistry6414]

Thanx bro for open up

[@alant383]

It looks like those cheap ball bearings might have failed which in turn could have caused the rotor magnets to grind against the internal field coil casing. I changed mine for 6001 ceramic bearings, but have not tested them yet. The main advantages are very much lower friction, zero maintenance (no lube necessary) and extremely corrosion resistant. Time will tell. But they make the motor more efficient with less frictional heat developed and near-zero rolling resistance :-)

[@propheteyebert7063]

I hope you didn't throw out the motor. Removing the broken magnet pieces will probably allow the motor to run again, once you put it back together.

[@dand0sh922]

what magnet?

[@ZencX3200G]

@@dand0sh922 In The Inside

[@migfer7]

thanks ,great help to choose crrect motor..

[@kevinsellsit5584]

Thanks. I now know that this motor is not worth buying until they press the magnets into the laminated core (like Tesla). That manufacturing process costs more but prevents the magnets from breaking/delaminating at high RPM. P.S. at 4:32 you said it was a brushed motor ... but you more correct earlier calling it a three phase motor. It is in fact a BLDC or brushless DC motor which operates using three phases and three hall sensors for rotor positioning information, which allows the controller to start the motor from a dead stop.

[@chickenmanatvtuft8283]

its a brushless motor idiot

[@kevinsellsit5584]

@@chickenmanatvtuft8283 Why are you telling me this when my comment explains that it is a brushless motor. Tell him not me, _ _ _ _ _ _. Pick a word, idiot, friend?

[@lalithkishore3774]

But my friend you get this motor at a fraction of a cost compared to a tesla motor from which u can't expect carbon fiber reinforcements on the rotor to keep the magnet and tesla motor is a bldc for a very low rpm but mostly its a induction motor.

[@kevinsellsit5584]

@@lalithkishore3774 Carbon fiber? Where? All I'm saying is the steel straps to hold the magnets on the rotor don't work as seen in the video. Both motors are BLDC.

[@lalithkishore3774]

@@kevinsellsit5584 No tesla motor is not a bldc motor, bldc are inefficient

[@sam97974]

Ur ossum broo

[@45llamas]

you can buy the magnets in aliexpress

[@victorreppeto7050]

That is a brushless motor, not brushed. For the money that is a truly remarkable motor. Try ordering new magnets.

[@rom1_bklf83]

Thanks for this video mate ! But is it possible to remove and replace bearings by new ones ? :)

[@cryban7011]

That is possible, you best need a puller, and heat the replacement bearings carefully (not too much) and they will slide on the shaft

[@alant383]

Yes. I did exactly that and replaced with ceramic 6001 bearings. I got mine from Bearings Canada (where I live) and they slip right on. PEEK 6001 Ball Bearing PTFE cage Si3N4 Ceramic Balls 12x28x8. Results are near-zero friction, will never overheat, no lube needed, never corrode.

[@JawadAhmadsahibzada]

did you made it work again ? i was wondering - can it work without a single missing magnate ?

[@brendandavey6194]

You can just remove and redistribute some of the magnets, you could have made it run again :) prob drop it to 2000W, but thats ok....

[@srqcrna]

If you remove the debris, it should still work.

[@davek2690]

How well would this keep water out? I have a 1000w 36v scooter and I'm wondering if i could i ride in light rain, snow or puddles without frying the motor

[@zombicreature]

Not sure about snow but the rest yes, should be fine. Make sure you let it dry after in a garage or smth, and clean it to avoid rust. My neighbor drives it everyday to work, most of the days its rainy and its totally fine after 3 years. Just very rusty, also cause he didn't took much care.

[@deza1194]

what is the thickness of the wire and how many rolls of wire?

[@cesarhoyos6955]

great

[@manueldonzella7385]

Have you managed to fix it?

[@moimemesuis]

never hit magnets with tools or dropping things onto them. any crack will break the magnet when turning at high speed.

[@EVO1087R]

Anyone have idea how many peak amps these motors can handle? electro and co sell a kit for the razor MX and the controller puts out 100a, but the motor they sell has a heatsink on it so it can handle more power.

[@alfak]

Nice video, Logan! I have a MY1020 with gearbox attached. Do you know how to get rid of it? Anywhere to buy the plate that goes in the sprocket side?

[@jacobleeson1574]

You really think someone taking apart a completely different motor is going to know the details of your specific motor? You think the guy is going to go out and buy one so he can figure it out just for you. Try using google or figure it out on your own. No one here is going to do the work for yoh

[@alant383]

@@jacobleeson1574 MY1020 is the same motor as this YT video, y'all. C'mon, try to focus.

[@alant383]

I would love to see the gearbox you have set up on your MY1020 - I am using a chain geared primary reduction with a belt drive (Gates Carbon bicycle) to the rear. I might change it to a belt drive primary reduction later but the chain drive saves space (laterally).

[@ansariexperiment]

Gjb

[@bikerevolutiontv]

Got a link to where u got it?

[@MegaTUHAU]

Can we use this motor as wind turbine alternator?

[@Th3mast3r69]

Ah no its a brushless motor not a brushed.

[@Todd_Gerhardt]

This guy knows nothing about this motor

[@methanu6659]

I need case screws for mine. Where can I order? Thanks

[@solarfunction1847]

@ Logan Nobles, did you know that those 3000+ watt motors that you buy off of eBay or Amazon or Aliexpress need a 100+ Amp 72v - 96v controller? I found out after doing much research because I bought a controller that was meant to go with my 1800w motor & the controller was only around 30 Amps but it was written on the box saying it was for an 1800w motor. To get the proper controller I needed a 45 Amp 48 - 64v controller which I found later. I can keep the 30 Amp controller for a spare if I blow the larger controller to get me by until I need a replacement if that ever happens. The reason why I think that your motor exploded internally was because you were most likely running it for too long at high RPM's which heated up everything in the motor & as things expanded at high speed the magnets couldn't tolerate the expansion. Most industrial electric motors have a fan on one end which circulates air inside the motor, I noticed that your motor has these tiny little holes but no fan. Next time you get a new motor, before you use it, take off both end covers & drill out 8 or 12 large holes between 1/2" to 3/4" diameter & buy some Aluminum Fine Mesh from an Auto Store so that you can pop rivet the mesh on the inside into several of the smaller holes on both end covers. The mesh is to prevent objects going inside the motor. Also you'll need one of those 12cm high speed high flow computer mining fans that go on the end of your motor to blow cool air into your motor. This one is a 12v 218 CFM 120mm x 38mm costs about 13.50 USD + shipping . www.ebay.com/itm/Bgears-b-Blaster-Server-Mining-Case-Fan-120mm-x38mm-2Ball-Bearing-4500RPM-218CFM/323844528997?epid=2234603024&hash=item4b66a35b65:g:06YAAOSwiN1dE3V~

[@logannobles]

Solar Function thanks very much for such a detailed reply. This motor was for an electric moped, and I ran it with no load for 10-20 seconds at a time.

[@solarfunction1847]

@@logannobles Okay, no load speed would of been flat out maximum but because it self destructed it mean's it's a dud motor from the beginning. If you buy from eBay you will definitely get either a refund or replacement the next time around whereas Aliexpress you're on your own. Perhaps next time you should try buying from a reputable US seller of the same type of motor.

[@bluewaxxx]

i have the same motor on my ebike it is rated 48v 1800W 4500 rpm ..i run it at 53v but its still dead torque and it heats up after a min .. it hardly takes off with weight on it.. but when i run it free wheeling without weight it goes extremely fast .. i guess u are right about low amps controller .. i think i need to change the controller to something draws more amps ..any suggestions to make it climb hills.. thank u

[@dorianbourdais7910]

@@bluewaxxx T'est certain d'avoir un bon rapport de réduction ? c'est peut être ça si le moteur tourne bien roue levé

[@robbiejames1540]

@@solarfunction1847 I don't think the load correlates to the speed here, as it seems to be a brushless motor? Either way, I agree, looks like a couple of magnets got damaged or improperly fitted, and when it spun up the radial acceleration broke them.

[@cryban7011]

of course you can move the shaft around, you just removed the cover, where the bearing is seated and centered.

[@lucienbarmet5525]

I had the exact same motor with the exact same problem

[@bladeheart6550]

What are the measurements of the motor in inches?

[@maliknaveedislam]

Which converter will be required to run from 3 phase ?

[@dankollars4501]

dc brushless controller

[@yakz9885]

my guess is something got stuck in between the rotor and stator so it locked up. just clean it up and make sure nothing gets stuck and if it rotates you should be good. if not you probably fried the windings. you could rewind the motor but from experience it kills your hands and i would never do it again. also theres no magnets on the inside but it seems you cracked one of the magnets on the rotor

[@gedieyondonnellhall8613]

How can i change the Front gear please help

[@waynegoff764]

Please never repair my motor!

[@ManipurSajikTampak.]

Hi Hold sensor in motor?

[@kingdarkem]

Hmm wonder where I could scavage one or 2 or these

[@samurbandy]

Where is the hall sensor

[@pfg8800]

Size Magnets ?

[@PauloHenrique-hg7iw]

mais não e escovado certo ? então ja e bom por isso

[@TwinlandVFX]

I would like to buy you the motor if the cooper is still fine, i really need it to fix a motor of my little brother would really appreciatte it if you could send it to Ecuador, for us is really really hard to get one and we need it

[@dawidklepacki3213]

Hej ile taki silnik ma par magnes ?

[@lajlajlajlaaaj3509]

I liked the video since I was curious of how does it look from inside.. first of all it is Brush Less DC motor with hall sensors. the design does not look too bad if you just consider low RPM use... however with just straps to hold the magnets in place for high RPM that is really bad.. still it is repairable 100% with little more knowledge and patience you would have saved 150$$ thanks for sharing though appreciated

[@inso5078]

Would glueing them to the rotor do the job or at least help in any way? I am thinking of getting one, enlarging the holes on both sides, replacing bearings and adding a heat sink and a fan to cool it down.

[@lajlajlajlaaaj3509]

@@inso5078 i would not alter the design in any way if low RPM is desired .. i have had these for over a year without any issues and it barely produce any heat.. if you are considering a major design upgrade then go with a higher quality BL motor

[@StudentTrader]

Damn I have the exact same problem with mine…

[@jamest.5001]

Yes that engine runs on electrons!

[@akhilesh7313]

😂😂😂

[@cinegraphics]

Yeah. Just don't spill the electrons, or it won't work. I think I saw one on the floor...

[@jeff6369]

This is actually brushless, hence the brushes that are not in the motor…🤯

[@logannobles]

Lol 16yo me had no clue

[@alimamtarmizi]

DC ?

[@clementoudot662]

Hi, I have a 3000W brushless motor and it is overheating. Could drilling bigger holes in the ventilation area solve the overheating problem please?

[@cryban7011]

will definately make it better. but dont get any shards inside the motor from drilling holes. these are chinese motors and while they do provide good power and torque for the price, you should not put huge loads on them or they will get hot. if it only gets so hot that you can still touch it, it shoud be fine though.

[@nikson1520]

Ponha uma hélice na frente do motor e aumente os furos ,mas cuidado com a água e detritos de chuva e excesso de poeira nele

[@alant383]

Yes, there is a YT vid on this by "beltsnshit' where he did just that and added a heat sink around the outside. You have to take the end caps off though. I drilled mine out to 3/32" diameter holes based off the existing holes, from the inside. They guy on 'beltsnshit' drilled out to bigger than that, maybe 1/8" but similar effect. Another improvement 'could' be to add a mini fan (computer fan?) to blow into a duct formed around the end plate to blow thru the inside of the motor and exhaust out the wire loom side. That would give the best convective cooling effect possible - just need a filter for the intake - like wire gauze flyscreen - and allow maybe a formed duct at the exhaust. I know, I eat too much cheese ..... :-)

[@anasarif9009]

Got a 3000w 72v there motor aint workin right with no weight on it all spins good when i sit on it tho it grinds and saueals

[@aaronfedock3418]

Those are the exact same magnets that are used inside of a Toyota starter

[@MrALCHEMIST2010]

Its BLDC motor (and NOT an induction motor) of 3KW by YALU. Model BM1109.

[@cryenomina4773]

I want this for an electric car lk4600d

[@benhewlett7691]

It is not induction motor, induction motor don't have magnetd

[@christopherjameswhite4051]

You can buy that exact same motor of eBay for less than $100 brand new but I wouldn't advise it because your scooter wouldn't be super fast lol try out 150cc outrunner motor I know they're made for model aeroplanes but they are are one of the best performing bldc motor you can get for reasonable money

[@ellisberry8747]

I’m confused?

[@ellisberry8747]

A 150cc bldc motor?!?!

[@robbiejames1540]

@@ellisberry8747 They're marketed as the equivalent of a 150cc engine

[@imjeffvaderofficial]

That is no good, you burn them down with lots of acceleration / on uphill runs.

[@suriyat8773]

72 V how much S Cell

[@DIYGuy85]

72/3.7=19.46S ~ 19S or 20S

[@Todd_Gerhardt]

Those are not magnets on the inside of the can just on the rotor. Those are coils in the can

[@proudtitanicdenier4300]

no duh

[@imjeffvaderofficial]

Theoretically, coils with electricity *are* electromagnets. In practice, even your 47uH inductor is.

[@Todd_Gerhardt]

@@imjeffvaderofficial just trying to help the guy out so he doesn't tell people the wrong thing next time...

[@srqcrna]

If it uses Hall effect, its brushless.

[@imjeffvaderofficial]

*if it uses no brushes, it is brushless

[@salamsheikh169]

Sar I Need Magnet Plice

[@devilsoffspring5519]

This is a brushless permanent magnet motor, not brushed, not AC induction...

[@Benzijune]

Chinese electric and electronic products are lot to be desired. Whatever I have ordered from China in one form or another I had to modify it ⁉️

[@griffinacoustics]

its not induction motor but a synchronous ac motor

[@Tachi778]

this is not induction motor, its permanent magnet

[@akash-vr9xm]

this is bldc motor with hall effect sensor not three phase induction motor ,dont bluff

[@jamieeast4974]

6 pole motor ! That damage is from dropping the motor in transit.

[@Boemel]

Weirdest thing to me is u can buy these motors from 500w to 3000w and they all look exactly the same ??

[@robbiejames1540]

Possibly different thicknesses and lengths of coils, put in the same mass-produced casing?

[@robbiejames1540]

Or maybe the ratings are for different duty cycles

[@Boemel]

@@robbiejames1540 i'd buy the highest rated one and undervolt them so make it last longer :)

[@denisjocsik7745]

You Can buy new magnets on Aliexpress glue it in place and it's like new

[@imjeffvaderofficial]

For another 2 weeks 🤷

[@vorpalinferno9711]

This is not an induction motor. This is a Parament Magnet Synchronous Motor Induction motor don't have permanent magnets.

[@nikson1520]

Mude seu nome amigo

[@VipinRao42]

I think this person is mechanical engineer only not electrical engineer 😁

[@mihailucian409]

Synchronous motor,not induction,it has no squirrel cage.

[@hughvera3569]

pm motors is in tesla front motor car

[@ariagutamachannel980]

Rotor is so tiny.

[@jasonmorgan661]

Thats a brushless it has a neodenium magnet core durrr!😑🤓

[@AlanPerez64]

You repair that motor, you weld a 12 or 24 volt motor to the shaft, and you turn it on with the battery and you already generate electricity; but if you make one of the Brushless windings independent, that winding can feed the starter motor and it no longer depends on the Battery; and you've already created a top secret, free energy double motor

[@robbiejames1540]

Or, you don't waste time after listening to ridiculous nonsense in a KZbin comment.

[@Th3mast3r69]

And you should have saved the parts from tge broken magnet. You could have epoxied them together and used it just fine.

[@bq1000bq]

No you can't glued it back to restore to its original function - the polarity in the broken pieces will not be linear. Just replaced the magnets. Aliexpress have many sellers.

[@biluroy4455]

This motor can atain 150 kmph speed

[@jamest.5001]

185 atleast!

[@cinegraphics]

It's possible it could run even without the magnets. It wouldn't be synchronous motor anymore, but asynchronous. That means, as the magnetic field in coils is rotating around the rotor, magnetic induction appears in the rotor, and it starts following the rotation. It can never reach the coil rotation (hence the name, asynchronous) because that would mean there's no induction anymore. But it could still rotate. Assuming that material in the rotor isn't distributed in a way to cancel the induction (hopefully not). Since the engine was useless in this state, it's worth trying.

[@michaelgadoury7042]

If you send to me I will fix for you .

[@overbuiltautomotive1299]

look repairable just think of swapping cheap chineyy bearings out [skf ] are good or at the very lest use new grease in new super chine bearing lucas red grease is nice or moly

[@robertpolicastro1]

Electric motor rebuilder can repair this. Cheap

[@z3roev600]

Nice motor but the magnet is not glued

[@joniprasetyo3129]

Beli di mana itu kawan.aku orong indonesia.kota SUROBOYO

[@geomiss8889]

Some days are best off by staying in bed....

[@proudtitanicdenier4300]

ok dude

[@Todd_Gerhardt]

This guys is giving all the wrong info on this motor.... 🤦‍♂️

[@kylec.5462]

Lol the only true thing he said was that there are magnets on the rotor, and it's an electric motor

[@asifsheikh-et7xn]

Motor is ok just need to replace magnets

[@amberswift3086]

I could fix that.

[@ericanderson3417]

WHY ARE THEY NOT REFUNDING YOUR MONEY DID A CERTAIN PERIOD OF TIME PASS ?? IF THAT'S THE CASE THIS IS WHAT YOU CAN DO, BUY ANOTHER ONE WHEN YOU GET IT SWITCH THE GUTS AND RETURN THE JUNK ONE. AS LONG AS THEY HAVE THE CASING WITH THE CEREAL NUMBER THEY WOULDN'T KNOW. ITS NOT LIKE AN AMERICAN OR SWISS COMPANY THAT TAKES PRIDE AND STANDS BY THERE PRODUCTS

[@logannobles]

I should have, but you can't really return things to china without paying like $150 for shipping.

[@ericanderson3417]

I hope it worked out for you IVE been looking at motors because I want to build a manned drone. They want about a hundred grand for one but with some know how maybe a few grand. Just hit that like for you

[@user-ek7qq7zz9x]

І що ти взяв і розібрав мідна катушки і здав їх на металолом? Такі магніти продаються на аліекспрес поштучно! Купи пару магнітів, поміняй і катайся собі далі!

[@Todd_Gerhardt]

This video gave me a headache

[@physcomathmangesh8734]

What is a price?

[@chutzpah3921]

That is a shame what happened to your motor. Sorry bud. Cool toy now lol! ;D

[@mashedpotatoes5323]

That looked like a very cheap motor

[@gerardjachymiak5822]

It is €87