Brushless Motor Numbers Explained (KV etc)

[@rexthecuber7203]

still helping 10 years later, thank you!

[@AdoptedYooper]

The best video on motor sizes and designations that I have found, no doubt. Fantastic job!

[@DuaneMorrisPhotosByDuane]

Thank god you exist in this world! I haven't been able to wrap my head around all these numbers since I started designing my own hexacopter. I have only been an RTF owner and pilot. I think I'm going to have to see all your videos now!

[@Painless360]

Welcome to the channel! :D

[@2바이오]

#*#&>×>28÷

[@SteveLoves2Fly]

Great info. I was so confused until I found this video. Thanks for sharing.

[@itsjustbonnie6418]

your always the go to guy when it comes to rc...best teacher ever

[@thatfeeble-mindedboy]

This helped me so much… You are a naturally gifted teacher. I think neodymium magnets in motors, brushless motor technology, Li-po battery technology, all these things that have caused the RC hobby to advance by leaps and bounds in recent years are going to work their way into every day technology in other areas and become game changers beyond the scope of what is now understood. I would see these motors and batteries advertised in hobby magazines and while they appear to be very fast and powerful, I didn’t understand any of the information that was talked about in the ad… This video cleared so much of that up for me, but I’m still just getting started. Now headed towards your video about batteries… Definite new subscriber! Thanks again so much.

[@DelQuad4X]

Thanks for this! I sort of had an idea and grasp of the designations, but as you and everyone else has probably been aware of, every manufacturer has their own concept of numbering schemes. Albeit kinda/sorta following a common system, I found from one to the other slight differences that confused me. Now I can look at them with better clarity!

[@calebjones3062]

oh my gosh, finally a person who will tell people what those confusing numbers are. thank you

[@Painless360]

Check out the other videos in the 'Introduction to remote control' series for more videos that explain things in as simple English as I can manage! :)

[@TheAcydbuzz]

Not new to the hobby but new to electrics. Thanks for the explanation of the ID numbers.!

[@steves6557]

Thank you for taking your time to share this info, you have provided me with greater understanding to select a brushless system for an RC car.

[@NetechoW]

Your videos have helped me out more than any other. Thank you sir!

[@mgee16]

Nice explanation of RC motors. Thanks for the clear descriptions.

[@paraglidingpassion338]

Love your videos you make them easy to understand and get your head around certain subjects. 😊

[@65Wildkat]

A huge Thank you for the information! A grateful beginner from Pennsylvania

[@19440116]

Thank you: you are giving very clean and clear information: I like it!

[@MarwanElkordy]

Such a great informational video. Thanks for the effort you put into making this information very clear.

[@robertgoldbornatyout]

Thanks Lee, Great stuff! Another excellent video.👍👍👍

[@davidwachter1263]

Thanks for the very informative video. I was wondering what all of these numbers meant and now I know thanks to you. I am building a quad copter and I do not need to buy motors that I will never need. I need a scout quad that I can use to patrol our property. One of our neighbors likes to dump hazardous waste instead of deposing of it legally. If I can catch him on video I can cook his goose. Thanks again.

[@Painless360]

+David Wachter best of luck!

[@redjr16]

Very informative and helpful as usual. Thanks.

[@ecstaticasom]

Great info, just getting back into RC models. Not touched anything since I was 14 (20 years ago) so very helpfull

[@Painless360]

Thanks for the comment, check out the other videos in the 'RC Basics' series.. Best of luck!

[@xMRPx]

@Philip Tomkins LOL! That's funny, I'm the same way. I'm 20 years older than you but I too, started when I was about 13 or 14. I'll stick with the hobby for a couple years, then shelf it for 10 years or so, then repeat the process. I'm just getting back into it again. Almost all my planes have 70"+ wingspans and all of them are built from kits. Since this is the longest I've been away from the hobby (13 years) and my eyesight has changed (i'm too busy to go get some glasses. Well, that's the excuse I use ) I decided to get an RTF foamy for a refresher course rather than use one that I already have. It's an Easy Trainer by FMS and it's really easy to fly. I wanted to get an RTF because all my "old fashioned" ni-cad transmitter and receiver battery packs are no good. They're all on 72MHz, that's what was used before 2.4GHz came out. I need to add some nitro fuel to my list as well. I've got 3 one gallon cans and even though they're all still factory sealed, I don't think any of it will be any good after 12 years. But maybe it will. I'm thinking out loud... Anyways, enjoy the hobby, have a great time and stay well, especially during this pandemic!

[@Jimgoodwin846]

This is a GREAT video! I’m just entering the hobby and this is one of the subjects I was curious about. Very good info.

[@Painless360]

welcome to a great hobby! If you're starting out then a lot of the videos on the 'Introduction to Remote Control' series should come in useful..

[@rcpilots1291]

Great explainer, thanks a mill for taking the time to simplify all the terminology

[@davewoundedknee]

Very helpful videos! Love the informative graphics. Thanks!

[@gregbrookman]

Thank you. Really useful intro to motors and the numbers

[@hairyspeakerz3161]

Thanks for the clear info. Really understandable

[@michaelhalliday2708]

Thanks so much for this explanation...at last I know what all the pairs of figures in the description mean...they have funny great looking symbols sometimes also, but I now know what the values are (e.g. diameter and length) Many thanks! Mike H

[@rnclucas]

Wow. Excellent job. Nicely explained.

[@patblenkinsopp8382]

outstanding beginners tips...well done..Thanks

[@jackdaniels7913]

Long time owner & still unfurl thanks & good luck to any one out there starting off in the hobby today!

[@surprisepowertv9915]

Good stuff thank you. I took notes!

[@stingerbold9327]

thank you so much for teaching us now i can wind my burned motor

[@termitehards]

masha Allah nice video bro, something to help with all the guess work up till now :-)

[@djamadi100]

Thanks man. I thought that the 3 wires supposed to connect to something entirely. But now I know I can just use the positive and negative., and leave the wire that I don't need out

[@Painless360]

Innovation Hi Innovation, the three wires do all need to be connected. If you have a motor that only has two wires coming out then this is a brushed motor and you will need a brushed speed controller to run it. A brushless ESC with 3 wires will NOT run a brushed motor with two. Hope I've not just taught my grandmother to suck eggs there!!Happy flying!

[@stevezvada313]

Very helpful for this beginner. Thank you!

[@mrgfpv3741]

Thanks very helpful for a newbie like me, Great stuff!

[@richardhayes200]

Great video with NO crappy music!

[@cesarinocente1703]

Thank you very much for the lesson. Very clear!

[@xMRPx]

@Painless 360 Your video was very informative and well explained. Thank you for the education.

[@grahamgynn8606]

just what I wanted to know thanks for doing this

[@japaullavrigata5526]

Thank you this video was great! getting ready to build my first quad.

[@Painless360]

Good luck with the build! Happy flying..

[@SouravBiswas-nt1hb]

Thank You sir.. It helped me a lot.

[@TheJJ650]

Excellent explanation. Thanks for this!!

[@prithvirajkanne3629]

One video with complete solution. Thank you bro. Do more videos.

[@Painless360]

Over 900 videos already on the channel, check them out :)

[@avecforte8851]

Excellent video

[@johnrobertson7583]

Nice tutorial bud. Keep up the good work.

[@LITTLEEXPERIMENTCHANNEL1]

Having got back into RC after all these years (where have I been)? Things have gotten a little complicated. You can just buy kits that easily fit for the models your transforming, the only twizz is the mathematics involved. Too much torque bears heavily on the drive-trains. Finding the right electronics/motors/esc's that are more efficient that put you on the "fulcrum" of lastibility/high speed economically needs these informative videos to explain. I have learned a lot from this. You have to burn-out some equipment to learn the hard way.

[@Painless360]

You can avoid a lot of the guesswork if you know a few things about the model. Check out the motor and prop playlist for the tips and tricks... happy flying!

[@paulmeynell8866]

Brilliant video thank you.

[@meareAaron]

vid may be old but its very helpful :) thank you!

[@demiurgiac]

Thanks, I am a newbie and all this kind of stuff helps!

[@4thGloryMonday]

nice job vweryh well explained

[@dibaminecraft]

awesome tips

[@simondm96]

Nice explanation!

[@georgevenetsanos7364]

Thank you very much for your help. Best George

[@hilairemacie1508]

Great!!! Explanation!!

[@Dronedudevideo]

Thanks learned something in 2020

[@OneTwo-wt8qv]

Yup put this info with the prop video I can calculate the motors needed for my Syma transformation and now I know how to fit motors in the chassis and get the thrust I need to lift. CHEERS!!!

[@johncarr123]

This is excellent! Thank you

[@poeticnight9339]

It's really great....! I never know it....! Thanks a lot.

[@mellyspapa]

Thanks for the info! Well done!

[@elihaugh4162]

This video is pretty helpful

[@kreynolds1123]

If you have an unknown bldc motor, how does one determine the proper controller. I built a bldc motor and bought a cheap controller that sort of worked with the motor but would sometimes have trouble starting the motor and after about 3 dozen test, blew 2 mosfets on the controller. I can answer any question about the motor's design if asked. A couple things about the motor..... 1) the motor is wired wye. 2) At about 216 rpm, the motor generates 0.126vac across any two coils. 3) The rotor has 12 poles. 4) The stator has 3 coils wound in a 4 turn serpentine or rather falharbor winding pattern for the 12 rotor poles. 5) The copper resistance across any two coils is a tiny fraction of an ohm. Each of the three coils is made from about 80 inches of 16 gauge wire. that should be about 0.027 ohms to a coil. 6) I made my own laminated slotless steel stator to fix the stator coils on. Do i need to buy a meter and measure the inductance?

[@Munzer1977]

very informative video indeed. this is why i like my British cousins

[@theanantasfamily3961]

great explanations

[@Furkan-hd2rh]

Hello, thanks for useful informations. I have a question. Is 1:1 thrust:weight ratio enough for safe flight? I mean for fixed wing aircraft cruise flight. From my aspect, here is the thing firsty, you need to analyse drag of aircraft then you should find stall speed after that your thrust at stall speed must overcome drag. Is this way neccessary?

[@Painless360]

Depends on the model type and scale. See my video on it.. Best of luck

[@techme061]

thank you , very helpful

[@paulcorbett4411]

thanks for sharing this pal...very helpfull ))

[@doktordrone]

thank you very much 🙏❤️🍺

[@philipcolaiacomo1371]

very helpful thank you

[@danielschwapp9865]

great video

[@ISLAMguidanceful]

i wonder if there is an algorithm for the perfect motor, maybe it would have to involve the total weight of the multi rotor divided by 4, and then it would be the highest ratio of torque to that weight

[@danielgnanathikkam6608]

Superb info

[@stevedallas007]

great job! appreciated

[@saviojsr]

i have the same bldc as shown in the video,how do i find out its amps and watt.please help me with this

[@Painless360]

+Sav job bdlc? Not sure what you are asking.

[@Fly4aWhiteGuy]

hobbyking.com/en_us/d2822-12-1800kv-brushless-outrunner-motor.html

[@sidamarali3030]

That is some precious information. Thank you very much indeed, sir.

[@MidEats]

Great details thanks

[@ВладимирКузнецов-ш5ц]

Ok.Thank you very much.

[@SebastianIbieta]

When considering the weight vs thrust is the fly weight with all components of the plane including the motor and battery?

[@Painless360]

It is the flying weight, so it is with everything attached...

[@ColSpade]

Man, you truly are the oracle! Do you do professional consulting?

[@Painless360]

I used to in my professional life.. Happy flying!

[@HodgePodgeGarage]

great explanation

[@johnmcclean6103]

Good Morning Lee I have a few questions about an electric set-up 1) The kV figure, is it off-load with no prop fitted. 2) Or is it on-load, with the correct prop and drawing the quoted current ? 3) In my test the current was only 34 A, ie, much less than the quoted figure. ESC, Turnigy Plush 100A. Battery, Turnigy Nano-Tech 4000 mAh. Watt meter, Hobbyking P1 HV. EMax Grand Turbo GT 2826 / 06 2899ba07-aea5-47c3-acba-bee7f787927e.png The motor is quoted at 4S 710kV 14 x 7 Prop 7600 rpm 51 A But at 4S 7600 / 14.8 = 513 kV ! These figures (513 and 503) are similar When I tested the motor 4S (13.7V on load) 14 x 7 Prop 6900 rpm 34 A 473 W 6900 / 13.7 = 503 kV ( 13.7 x 710 = 9727 rpm ? ) I also checked the AC voltage 8.7 V AC ph to ph 770Hz ( 6900 / 8.7 = 793 kV ) The battery voltage after testing is 15.1 V My questions are, what voltage does the kV figure relate to, and why is the on-load current so low ? Thank you for your attention Regards John McClean, in Wicklow

[@Painless360]

A motor will try and maintain that speed in all conditions. The wattage it'll pull depends on the load. Larger props and more pitch will need more power... Best of luck

[@RedneckCanadians]

very well done

[@u.s.f.p.v8466]

U have great content that's informative 🤘 thanks for sharing and keep up the awesomeness 🚡

[@ilovekitties8643]

thanks for this upload!

[@Suprem3GamerDamianWinchester]

This is exactly what I was looking for, for a very long time, thank you so much, subscribed bell on, liked, please tell us about the esc, done.

[@Painless360]

All in my RC basics playlist. kzbin.info/www/bejne/hYuxqZWugZyWmsU

[@superhuan]

So, would the black wire be for negative, red for positive, and yellow for??

[@Painless360]

If you're talking about the three wires from the ESC to the motor then they are neither. See my video on ESCs and motors..

[@dividingbyzerofpv6748]

brushless I can understand right up until timing adjustment. wish motor manufacturers would give more documentation on what should be set up based on ESCs and voltage and load/prop.

[@FooTech1976]

great vid, thank you!

[@giorgioottaviani2841]

Hi. I have some questions related to motors. I hope you will answer to me. I notice that motors for planes have normally higher can rotor than the motors for drones. Why this difference? Comparing motors for planes and for drones with same diameter, same kv and same voltage applied, what are the differences between motors? Considering same motors characteristics, may I use a drone motors on a plane? There is any differences in performance? About propeller, which are the main differences between drones props and planes props? Is it ok to use drones props on planes? Thanks for your attention and replay. Regards. Giorgio.

[@Painless360]

That's a lot of questions here are the short answers ;) 1) 5" quad motors are all about speed and performance, planes have more room and don't need to squeeze that much power out of a small space 2) Most of it is branding and hype, sure there are motors with better bearings, magnets and quality control on both sides of the fence. 3) Yes you can, I've used multirotor motors on lots of wings 4) Not by much at all if the specs are the same 5) Drone props are all about speed, plane props tend to be more of a range of performance and efficiency. 6) Yep Happy flying!

[@telatcan2453]

you can look at the channel to watch the brushless motor video.

[@talatpubg3609]

nice video

[@senerkalafat7438]

nice video

[@cayofhorror1090]

Nice vid bro

[@gstube8597]

nice video

[@ArleteFerreiraGuimaraes]

Hello, are you able to help me on how brushless motors should work when implemented on sslot cars?

[@Painless360]

Sxectly the same. But, the ESCs in a car can run forwards and backwards... Best of luck

[@tako2967]

I am having trouble finding the current consumption of brushless motors, most of the online store have no data sheet for that particular motor. Do I simply divide the power by voltage? or is there some calculation i need to do? Thank you!

[@Painless360]

+Ta Ko you need the datasheet. I'd send the vendor a message and ask them for it., best of luck!

[@RandomVideos-lt3jz]

Can this be used in a rc car for faster speeds?

[@daletec]

My 450 size drone with Phantom 1 guts. total weight is 1633 grams. I am looking to upgrade the 2212 motors to accommodate the extra weight. I'm using 2x 3s3000mah 25c batteries and I'm only getting about 8 mins of flight. What size motors would you suggest? I'm using Phantom 3 9x4.5 props.

[@Painless360]

+Dale Adkins it's not just about the size of Motors, it's also about how big the prop is that motor can spin. For maximum efficiency and flight time you want very large props spinning slowly. See my video where I tested out a high KV motor with a small prop against such a setup and found how much more efficient it was. Best of luck

[@chaitanyangulhane]

TANKS A LOT BUDDY

[@andiazhar5680]

im build quadcopter, and i notice that 1 of my motor getting hot while the others not. i switch to other esc, some problem occur.. do you know what the cause? or i have to end it up buying new motor?

[@Painless360]

+andi azhar Could be a few things - I would check the bearings are ok and don't need oiling/replacing. Also you could swap the motor with another on the model and see if the same motor gets hot (in which place I'd replace it) or its something to do with the settings on that ESC.. Best of luck..

[@andiazhar5680]

the motor going to be twitch when i replace to the other esc, but rotate nicely on 1 of my esc ( which is different type with the another ) , but it cause the motor to getting hot

[@Painless360]

Motor twitching is usually caused by a bad/broken connection on one of the three wires into the motor. Best of luck..

[@andiazhar5680]

thanks for your fast respon, i will try my best

[@haraldkrennrich3624]

+andi azhar Any news on this?

[@jjlanda1171]

Hello nice and helpful explanation I’m new to the hobby, but I don’t know how to calculate de motor current draw?’ The motor of my plane is 1,100KV and uses 3S batteries, which would be the number of amp os this motor.?….thanks

[@Painless360]

You need to know the prop and then lookup the draw. See my motor and prop series... Best of luck

[@alekrodimidecu4625]

Who came here because he loves bldcs, and not for information? Btw good video.

[@luckym79]

Is iT possible to use This on a fan so iT Will work true a plug and socket?

[@dennissmith7055]

Thank you .this is now on my favorites

[@SnowsWorld]

I have a question but cant seem to get an answer. On gimbal motor ie: BGM4108-130 how does the polarity work ? is it the same as prop motors ? wire it any way you want ?

[@Painless360]

+HIXMF Exactly the same as any brushless motor.. Best of luck with it..