Who makes the best 5" Motor? AOS Labs 5 inch Motor Testing 

If you're a manufacturer (or a pilot!) and would like to send me a motor to test and add to the AOS Labs charts please get in touch on aos-rc.com 👍

Chriss revenge to Mr Steel talking bad about AOS 5. xDDD

Unbelievable work Chris like always!! We need a video showing us how to flash our BLHeli_32 ESCs to AM32! Thanks and Cheers!

Glad to see others focusing on motor and propeller testing. Great work! The message that's been propagated saying that motors and propellers of the same size and pitch have a negligible difference is so untrue. One observation I've made when measuring Kv is that it is very important that you do the test really quickly (burst and measure) since heat will build up under no load and start affecting the accuracy of the test. This is probably less of an issue on larger motors with a lower Kv, but it makes a huge difference on smaller ones.

Well done, Chris! Long time fan here, and this is my favorite and most interesting video you’ve posted yet. Perfectly executed. I’ve been flying the wasp major on all my freestyle quads for over a year. It’s a fantastic motor and it’s hard to describe to the feel of it. This quantitatively explains it.

Seeing how solid the Emax Eco 2 is, I wound love to see how the other budget option, the Xing-E, performs.

Thanks for all the work you're putting into this Chris! Great information and I love how your enthusiasm comes across.

Amazing testing. Truly clinical. I am thankful that the hobby has your support and interest.

Really interesting results indeed, Chris! 😃 Thanks a bunch for all the testing!!! Stay safe there with your family! 🖖😊

Once again Chriss, you knocked it out of the park. Absolutely brilliant and next level testing and analysis. Love it!

Chris, thank you for all the effort. This is a liquid gold kind of content. It would be also useful to see the price adjusted score

Great video and initiative, Chris! Really appreciate. I hope this motors list gets bigger and bigger with more brands, and also the cheaper ones as well.

This is exactly the kind of testing we needed in the community! An interesting test could be you putting the best motor-ESC combination against what was available back in 2014, Emax MT2204 and a simonK ESC, and similar combinations

That is a great job. I had a tested alot of motors for the auto industry before I retired and your dyno really brought back memories.

A pleasure to watch! The most impressive Motor-test-video by far. Thanks a lot

Separating the science from the hype. Phenomenal work. You continue to confirm our suspicions and open our eyes to new information to put to use. Please keep doing what you're doing. It really empowers the community.

man you hitting all points--I was just thinking about durability vs. the tight airgap!! amazing!!

thank you for doing this, and sharing your results so freely. this pushes the industry forward as OEMs know they are under scientific scrutiny.

One of my favorite series from you is your thorough motor testing videos. This is exactly what our community needs to keep everything fair and honest. The results surprised me as well. I have been using the Emax Eco motors for a while now and since their performance is pretty much middle of the road I'm quite happy with the results from that especially considering the price And I usually break motors a lot lol. Great video and you explained everything so well. 👏👍👊

Amazing video, all things aside I really learned a lot from just the way you explained your wet up and method. Awesome work mate. Cheers and may 2023 be a great year for FPV :)

This is amazing! Wow. Thank you so much for all you do!

Great video, thank you so much for the tremendous amount of work that went into this.

You are absolutely amazing, thank you for keeping the hobby honest, sensible & authentic with transparent testing.

Keep going Chris, massive thanks I really enjoyed the video.

Great video, very informative. I'm looking forward to seeing the testing of the RCinPower V4. Also I'd like to see some more testing on the Xing2 1855kv which was a motor you used on your AOS5 BNF, and the ones I bought for my own build on your frame. Videos like this drive motor manufacturers to bring better products or at the very least, make their prices more competitive. Thank you and great job Chris! I think what people would like to know straight up, is what is the best motor for each style of flying. Best for racing (performance), freestyle (durability and performance) and cinematic (consistency and smoothness)

Awesome video as usual Chris. Correct me if I'm wrong but as a budget drone builder my main takeaway is that the Emax ECO 2207 gives a really good balance of responsiveness, torque and efficiency which IMO is decent value for money. It might be worth normalising those scores by cost. 💸

Data to back up my love for Tmotor! Thanks for all your work!

very comprehensive testing and analysis that's for sure!!

Absolutely brilliant content! We are lucky to have a guy like you performing these awesome scientific tests and publishing the results. This will hold manufacturers to their word.

To get an exact comparison of air gaps you could measure the stator and rotor diameters with calipers. I'm glad you're doing a true inertial dyno test in addition to the usual prop testing because it really does give you more objective normalized data. How many averages did you do for each run? The data still looks a little blocky on some graphs and the efficiency one is pretty hard to decipher. Cheers!

Thanks for using Skystars AM_32 ESC for your test glad you liked it so much

Great video. Love your scientific approach.

Thanks for all you do!!! Also would love to see the hyperlite eco motors added on you next round!

This is so awesome, thanks for going through the trouble of performing all these tests and getting us all that data! On a sidenote: This must feel pretty darn ironic but good for you, given how Steele talked shit about the AOS 5 when it came out...

Solid info Chris, love Labs!

For someone that’s looking to build a new quad I appreciate these reviews.

Amazing content as usual. I need to try those RC. Next 7” motors?

Heaps of fun,probably not so much compiliing the vid but that was great, i loved every minute. keep up all your cool work and thank you for sharing, cant wait for your next.God bless!

Thank you for all the hard work! Great test, very informative video. Mr. Steele must be shitting bricks by now :)

Awesome work! Thank you!!!

Awesome test Mate 👍

ABSOLUTELY FANTASTIC RESEARCH! 💯❤

would love to see similar testing in the 0802 size, very cool.

Great video as usual. Thanks. Can you make a tutorial video on flashing AM32, not many videos for all in one esc's.

Nice work! Would also be nice to see a vibration analysis and consistency of all params across a 4 motor sample group.

This is an awesome video. Thank you! (headed to patreon) 👍👍

A lot of weights gave their life for this device. Exceptional video by the way!

Thank you so much! Very very interesting content!

Very interesting and extremely useful. Scientific approach. A few more parameters I would like to measure : 1. a motor noise (not sound, but gyro); 2. durability of a motor.

Very informative. Please test the Five33 1960kV 2207 motor most of us use for 5in racing (it's also a spec motor for freedom spec)

Such an awesome video. You really know you are talking about.

Thank you for sharing the knowledge and performing highly scientific tests for us. It would be great if you could test 2807s on the market for all of us that are in love in 7 inch builds. Cheers.

Super informative! And great timing for my new HDZero build :p

I love the 2107 gtsv3 been flying them for a year now and I just love how responsive they are

Great video! Would be interesting to see testing on bl heli as well

RCInpower have been my favorite motors since about a year after I got into quads, so like 5 years or so. Now I can see some data that proves it wasn't just a placebo effect. Thanks Chris!

in other video, mr steele says aos frame is complete b*llsht and in this video, you say mr steele motor is b*llsht this is elegant wars.. love it

Great work. You're a huge contributor to the community. Products will continue to get better as independent technical testing happens more and more. One quip -- your audio is out of sync just slightly at times, just enough to bother me. A quick clap to sync audio and video would help!

Great info and thanks for sharing.

Very valuable. Thanks!

Very cool and interesting... I am glad you explained how the air gap can impact durability. The wasp motor may be perfect for racing, but you may not want to take it Bando bashing. Very cool information!!

Not 30s in and I can't tell you how excited I am to watch this. Content the people want 🤣

Gold. Solid gold content. Platinum, even.

Hi Chris, great video. I noted that the Mr Steel motor (worst performing) and the best performing both had what appeared to be "single solid stranded" wiring and not what I have seen on some motors which is multiple stranded wiring. And like you I believe the air gap and magnet type can only be the difference in outputs. As an aside I believe the multiple stranded wiring to be better (assuming the same cross section is arrived at) in that it is more flexible so easier to install and it generally less prone to vibration cracking of the insulation. Your comments on this would be appreciated.

Absolutely changing the game

Love these tests! 🤓

Amazing instruments to test and very interesting results ! Intrigued by skystars AM32 esc, would be interesting to test with bigger motors 28xx 30xx to see the difference for acc/deceleration tests on 7 inch props

Excellent work as usual Chris but I'm lost a bit regarding the Kv of these motors. I cannot figure out exactly how you normalized or accounted for the Kv variance if you supplied a fixed voltage throughout your tests. I used to design lightweight BLDC motors a life time ago for a completely different industry (primarily slotless and ironless). I had access to an accurate sub mNm dyno, a high resolution thermal camera, and several other interesting equipment but the Kv got me during testing and comparison every time. I finally settled on efficiency times power density plotted against RPM as a quick and reasonable indication of a particular design's performance. Just about all aspects of a motor's performance (including thermal performance) was neatly squeezed into one simple graph without any dependence on Kv or supplied voltages. I don't know much about FPVs (yet... I'm learning) and I'm not sure if that'd necessarily be a good measure of performance for quadcopter motors... would it? One other small observation if I may. The noise level on these little power houses is horrendous compared to ironless designs. I believe their ear piercing shriek is mostly due to laminations expanding and contracting from rapid flux reversal. Unfortunately, the Ironless designs couldn't compete with the amazing power density of these little guys.

Nice testing, great to see the wide range of motors featured here too! You mention the AM32 firmware has a different performance on the FPVcycle motor vs using other firmwares, it's curious the stout v4 motor sits at the bottom. Given the ethix motors are often seen running with fettec/ kiss at least for Steele, would be interesting to see if that changes any results of the motors here to see if there is a benefit or disadvantage to run specific firmwares with different motors. Correct Spec sheet is very valuable info but I also wonder if there's an optimal setup for each component to be used with, like an f1 car works well together by itself, but take any of the well performing parts alone and put them on your Holden Barina, well maybe the car looks cooler in the parking lot. If the feel of one complete setup works better for a person over another, bring on the Permutation testing 🤣

Great video!!

Absolutely great content keep it coming & thanks for doing all this work 🔥💪

I'd love to see a test of a AMAXINNO motor!

great content. plz more motor test with more manufacturer

excellent vid! will you make a new pid tuning guide for BF 4.4, or will your 4.3 guide still be relevant?

Thanks Chris

I know you are more focused on freestyle, but on racing the five33 2207 motors are extremely popular. I believe it will be very interesting to see them tested along!

Hey Chris. Great work there. Possible for you to also include XNOVA to compare to the test

p.s. this is friggin' gold. Thanks, Chris!!

Absolutely correct on the air gap if you want to wring out the most performance from your motor. Of course the trade-off is durability and longevity of the motor.

..It buzzes like every other motor I've ever heard... 😄 I believe this civilized but thorough reaming of Mr. Steele's product is purely coincidental.

This is one if not your best compression and analysis of fpv hardware 👏 I suggest you to add compare to the xnova brand as it is counted as one of the best if not the best motor manufacturer with less promotion and more actual good products Also it would be nice if we can measure the amount of electric noise or vibration for each motor to Better understand which is the most “smooth” Keep up!

Hello Chris, I rewind motors here in Brazil, regarding KV precision, it is very complicated for the kv factor to be a precise value, because the number of turns that is given in each coil is always an integer. What I have noticed is that in the same stator, for example, in a series of four coils 2 are wound with 10 turns and two with 11 turns, of course there are stators with all the coils the same, I just wanted to show you how the manufacturers arrive to different KV values.

We need extreme 8S / 12S motors for 5''. Good that Gaoneng finally made 1300mAh 8S batteries.

Also to consider: - permiability of the steel field keeper the magnets are mounted to, and the armature. - eddy current losses in the armature, magnets, and field keeper.

good input, thanks 👍

That was a really good detailed experiment. At one point you had me searching the internet for RCinpower motors, unfortunately I fly a lot of bandos so seeing the tight air gap make me worry Obviously the tight air gap increases efficiency, but at a trade off for the durability. Well explained though

Super interesting and informative video. I'm a big fan of Xing motors, but I'm definitely going to check out RCinPower motors for my next build. I am surprised by the performance numbers of Mr Steele's motors. But they're built to what he wants in a motor and they certainly don't seem to hold him back. I'd love to see tests on motors that racers have listed such as Minchan and Captainvanover. 2207 2100kv 6S motors, that'd be awesome. Happy flying Chris. 🤙😎

Wow. Until 27 minutes ago I thought the only thing I need to pay attention when it comes to motors is stator size and KV... and then pick whatever I optically prefer most. Guess it's not that simple after all! The one motor company I am missing though is XNova. It seems practically every racer is flying these and also the five33 motors are rebranded/custom xnovas. I put them on all my newer freestyle quads too and am really happy with their overall performance, but I also noticed they run really hot even with a super quiet quad, so I'd love to see where in that chart they would end up! And I know which motors to throw on my next pink AOS5 now XD

Nice, very nice vid. Do you think electrical resistance or impedance play a significant role, or its the difference insignificant?

great content thank you

I hope one of your next videos is how to flash AM32 to a Blheli_32 board

Motor winding more towards the magnets and more compact winding makes a difference too. That's what I noticed when buying motors. That's why some motor like the stanfpv 2203 have a lot of torque, despite being flat. Taller motors tend to have more compact windings than a flatter motor. Hard to describe it. But if you build a coil a longer coil have less pull than a coil that's short or compact.

amazing testing, thanks for bringing knowledge to the fpv comunity, I wonder if the low power and torque of mr steele's motors do actually improve throttle control by making it less touchy (kinda of smoothing out stick inputs), also could the more linear torque curve make them feel more linear and predictable?

If you are testing more motors, I would like to see the Sunny Sky Edge Racing R2207 included. I have been using these motors on planes for a while now, and they seem like really nice smooth motors.

Well, that confirms my choice of going AM32 and RCinpower gtsv2 last year for all my freestyle build. Amazing work Chris I love how you bring evidences and facts to the table, keep it up.

Thank you so much Chriss, I really enjoyed your testings and love this scientific approach ! - Do you think you will be able to update us when BL32 firmware will be more performant and consistent ? I have several quads with it, I wouldn't want to switch ESCs specially as I am sure the devs are working on it :) - Those testings could be very useful for cinewhoops motors I think, as we need high performance motors for those builds :) - Something I wondered during your testings is how efficiency, higher torque etc really translate in terms of how the quad feels when flying. For example there are cinematic motors from brands like AxisFlying, does the fact that they are targeted for smooth flying means they have lower torque ? And if they are less performing motors, why are they expensive, and shoold we always take good performing motors and never listen to the marketing approach of "cinematic motors" ? It would be great if you could explain how the results can affect the feeling of the quad. Thank you !

This is amazing! Any chance for 7" and larger motor tests?

I would love to see wing motors tested too. for example, 4108 motor, X3120 880kv, stuff that goes into the 3D printed planes / foamies. Titandynamics has a good selection as example. I'd say we're mostly interested in efficiency and max power.

Thank you. Wish you included the xing2 2207 motor

I have a set of rcinpower 1204’s on a 3” qav and they’re shockingly good 4s. They handle the 3” prop where most people use a 1404, and they’re efficient, getting 5 minutes flying all out, 6.5 cruising. I will be using RcinPower again on my next build.