Split Shifted Magnets and New Motors 

Table of Contents: 00:00 - Intro 00:25 - 22.6mm motor stator numbers 04:49 - 28mm motor 05:52 - 25mm motor with split shift magnets 07:23 - Split Shifted magnets 09:19 - What split shifted magnets are supposed to do 12:36 - Split Shift magnets don't work everywhere... 16:38 - Difference between 25mm and 22.6mm performance FPVCycle.com motor lineup: fpvcycle.com/collections/motors

Splitting bell and stator is a big improvement! I always had trouble dealing E-clips (or C-clips), but as you show, there is just a screw at the bottom: great improvement too! Thanks a lot for sharing!

I love that your selling the motor and bell separate. I've been using your 25mm motor since the first batch (the ones with desync issues which you replaced for free when the second round was made) and I've been running the same stators since. I've only ever had to replaced motor bells and kept on ripping :)

I agree with the 22.6 efficiency. I even capped mine by 90%; they have plenty punch. Noticeable more flight time and less voltage warnings.

Interested to see who’ll be the first manufacturer to start experimenting with axial-flux motors for the larger sizes.

When Bob posts content I feel like I am back to 2018 🥹🥹🥹

Bob's builds are best. I've tried the competitors and what I've found is: Bob's motors offer 12% better throttle control, 7% fewer crashes which equals a 43% better overall flying experience. I invest only in fun that matters and Bob is the chosen investment for me!

I absolutely love your tests and experiments! Thanks Bob!

I really enjoy learning about what you're working on, and what you have concluded. I have really loved RCinPower motors, and I look forward to trying yours sometime soon. Thank you.

Makes sense, I will say Fpvcycle has always been top tier to me. They are always buttery smooth and have never let me down so of course Im a huge fan what more can you ask for.

Keep doing what you’re doing! A lot of the designs we thought would work, didn’t. All the “technically perfect” motors sucked for freestyle, or were just too inconsistent due to various (mostly temperature, durability, manufacturability) issues. Skewed stator testing caused huge inconsistencies, extra weight from the extra epoxy, harder winding, and poorer cooling, maybe with a pump type bell it would work better, but I don’t know honestly. It was very preliminary and honestly was costing too much already. I might skew the stators on my last few KO pump bell motors… maybe 25degrees, tops (15 will likely be better), but I really dig the custom wind I got on them currently. I’ll think about it, I’m honestly barely surviving my mind ATM and not as enthusiastic as a couple of months ago, but it will likely return, so I don’t worry too much. I love this stuff. It was through real world experimentation and small optimizations that we got to this point. And it’s not a bad place that we are at, but it can always be better! Thank you for your contribution! Happy flying! ❤

Hey Bob! Just want to say thanks for the products over the years! I just picked up my 25mm motors that i am going to use with 6" biblades as per recommendation by one of your guys. Just assembled them and they feel AMAZING. I have raw 22.6's as well and the same quality experience. Need Pink 22.6's next for a race build. Cheers man!

Excited to try the 25mm on my chonky 5 inch and the 28mm on my 7 inch. Watching this as I assemble the 25mm and they are impressive. I love that they are serviceable and will probably stick with you guys from here on out!

Really, really interesting stuff indeed! Thanks, Bob! 😃 I like how you try new ideas! Even if they don't work you've learned something! Anyway, stay safe there with your family! 🖖😊

More info is always a good thing. Thanks for "working the problem" on our behalf. It IS appreciated! ..... flossing..

I really like the serviceable motors idea.

Very very interesting 🤔

The new motor lineup looks amazing...cant wait to try them... now what i really need is the Sonicare to come back in stock. I need spare parts to get mine back in the air. Its my favorite lightweight 5in.

fpvcycle motors are amazing was hoping to see more on the drone in the background

Why are they sold like this? BECAUSE we don't buy tires AND rims every time we just need tires. Thank you so much for finally selling motors the way they should have been sold all along 😁

I didn't bother doing the math regarding the 2809 vs 30mm, but holy crap that has a lot more volume than I thought. I hear 28 and automatically think it's kind of meh for 7" (freestyle) but 2809 is a fair bit more than your average 2806.5. Very nice.

Can’t wait to try it out

Im still flying the v1 25mm motors and i love them !

Pretty cool, the dual magnets will certainly smooth out noise & vibration in cinebuilds especially.

I’m loving those colors \!/

I loved seeing your new series of motors, I rewind motors here in Brazil, and everything related to this component interests me. Your motors must be very good or not popular around here, as one has never been by my workshop for repair!!!

Actually a great idea to sell stators and bells separately 🔥👍🏻👍🏻👍🏻

What canopy is that on the tp3 in the background? I’m looking for a better hdzero canopy and maybe that’s it?

...it would be logical for them to feel smoother with more positions. I love new innovative things.

@kabab what timing do you run with these split shift magnets in BLheli_32?

Awesome, I'm a big fan of repairing my gear.

Very cool!

Thanks for sharing your findings, I have ordered a set of the 28mm to replace my existing 2809 from another manufacturer. It would have been great if some of these high vis colors were also available in the larger bells. Looking forward to experiencing these new motors.

Slightly unrelated: thoughts on the Jumper T20? I remember you're all about compact radio with full-size gimbal.

I love highly intelligent people. They always achieve it different than any others or combine ideas of 2 different fields. Thanks for permanently iterating and inventing in our hobby!

Bob, is there any chance you will be doing more of the clean white 25mm bells?

Love that your experimenting, failing and learning. That’s proper product design. Question: if the benefits are negligible, do the extra points of potential failure (more magnets) offset any gains?

which flight controller would u recommend these days for a 1-2s tp3 build?

Your videos are so easy to dig in and make own thoughts about the content, no harsh movement on the surface that distracts the mind. Thx. On your product page of "your" spry toothpaste, you speak about a low abrasiveness. Do you have a RDA number to compare it to others? Greetings from Switzerland.

Really cool products! Just curious, why did you choose a smaller offset on the split shifted magnets and not more of a shift where the gap was centered between the other row of magnets, much like a brick wall? Thanks.

So excited to see the best result of these experiments.. Feel like These motors are going to charge our cells soon 😅😁

Thank you, great info. Do you think the 2812 size can be used for a 7" chase build? really trying for 120+ mph

You can anodize aluminium without color. It will be protected just like any anodized colored aluminium, and look raw. Either way, our quads are not really exposed to the elements for that much time, so guessing they dont oxidize that much anyway.

finally some cool motor colors

When will 25mm 2150kv be back in stock? White or high vis? Might switch over to Wasp stator size motor but need to switch to 6s.

What is that white canopy? Is it possible to get it somewhere? I’m designing a canopy and recently got the idea of splitting it in two to reduce mass and weight like this. Nice to see it out there

It took almost 2 years but I finally broke one of your 2203 motors on my Fouride quad. Had to replace it with a StanFPV 2203 motor though. The FPV cycle motors were not in stock at the time.

Thanks for sharing this information!! Where can I found the complete graph? I'll build a 6inch long range soon and I would like to see which engines to choose

really cool, I recently saw newbeedrones bonded magnet motor (the smoov) and got me thinking, with the bonded magnet all you would need to do is cut it in half and shift it for the same effect, or even cut it in 3 rings or even more??? but I guess other merits like durability aren as sought after with quads that size. That, and I wonder if the tradeoff of efficiency would be worth it.

wouldn't split shifted magnets require directional motors? like cw and ccw would need the shift in a different direction? did i miss something?

Has this already been done with the flying wing motors that are typically longer and skinnier?

Not sure if I missed it or not but does the split shift mags affect the rpm filter? Or timing?

information you may know: a typical electric (inrunner) motor is always loaded via reduction/Mechanical Advantage (MA). in contrast, an outrunner motor is usually loaded via fractional/negative MA. ( compare the radius at which the force is produced (in a motor) to the radius at which the load occurs, at the prop/rotor. )

Hey I love the 25mm Motors... I have purchased the last 2 versions.. I would like to know If I just buy the Uni bells will it fit on my motors that came with the "NOT unibell" bell..?

Request Please: can you do a run of that emerald green that the old motors came in? I have a set and really love that colour.

I love the 1s 13mm motors. Can we get bells with spokes not quite so thin? I feel like the og teal 13mm were tougher though i only have the 5000kv. Limboing drainage ditches with pipes running across has its moments 😥😂. But i love the ability to purchase just the bells as that's usually all that's needed. Cheers 🐝

That’s pretty neat

Gonna wait for the axial flux motors 😮

Building my first fpv quad, and just decided to use bobs 22.6 motors based on the info he supplied on the product page for them, and the gemfan 51433 props. All before Bob made a video about them or any reviews had been posted hahah I trust kebab enough, I'm fuckin pumped to throw this thing together. Just need Batts, charger, and soldering materials now.

Have you guys looked into Axial Flux motors yet? Have I asked that already? What did you think of my own motor volume to prop size to weight theory that I posted in a previous video?

Can we get reflective material motors so if you lose it, you can find it with a flashlight near Dawn or at night easier I LOVE that split magnet bell

I purchased 6 Ethix cinerats motors, but noticed that 2 of those have almost zero "nochiness" while the others ones are pretty nochy. They seem to fly okay on my 3" quad, but should I be worried ?

Great Video and work KababFPV!😃 I have to admit that I didn't quite understand everything because my eyelids closed in between😜But something that would be very interesting for Tinywhoop motors would be the better throttle resolution or the easier handling of throttle with split shifted magnets. If the split shifted magnets would help with that in any way, that would be very nice. That would be a game changer. (as well as throttle MID to 0 and throttle expo to 30-70% was a game changer for me when flying tiny whoop) However, tiny whoop motors are always high kv motors. In any case, I would be happy if you were able to build 1S motors with Chinese manufacturers again at some point. Especially also ultra light 702 802 1002 motors for whoops. I'm looking forward to your next video :-)

The split shifted magnets sound like they would work good for RC crawler trucks if it has better low end control?

Interesting idea... it would be great to be able to compare the overlapped magnet idea to stators with vertical at the shaft morphing into diagonal 'paralelogram' shape at the ends instead. Too much work for non guaranteed gains?

Does that mean that if I have a rcin power wasp motor and wish to purchase these bells, they will fit?

Curious, were any experiments preformed with configuring the ESC's differently for use with the split-shifted magnet motors? Mentioned in the video is the number of pole positions (8:11, with manual rotation) is a doubled notch feel with the split-shifted bell, so wondering if configuring the ESC for 2x the number of poles would change any performance characteristics like torque, rpm response, or efficiency.

What aluminum type is the bell specifically the number?

Are the 23mm short motors going to be coming back into stock anytime soon? I have a new cinesplore that needs some motors, lol...I dig the hott pink. Cheers!

My v3 25mm Imperials have taken many many impacts, but still sound and perform like new. That said, I'm not sure I'll ever need new motors. They will not die.

So are these manufactured by rcinpower?

just here to say that 2803 motor also works on 5s 6" just fine I still fly them on my flosstyle from time to time when I get out to fly

Anodization on aluminum bell can make the bell harder to ding. Anodization can increase hardness depending on the type

I gotta have some hot pink! Also, aluminum doesn't rust, it may oxidize eventually but not rust except on steel. Aluminum oxidation is a central part of it's corrosion resistance due to it's high affinity for oxygen. It also depends on environment, the purity of aluminum and the presence of other substances.

Cool shit

wait.. generally speaking these spacers could also go underneath the bottom bearing? I thought it was to lift the bell up a tiny bit (and it being at the bottom wouldn't do that right?). what slack will it take off then? are bell threads too short or something? I actually don't get it. 🙃

That tester always says that there is no noticeable distinction between your motors and others I knew he was off on that assessment long ago. It’s bad that he and the other guy couldn’t tell. I noticed that your last batch , the first with shifted magnets were the best yet. Most anyone serious in the hobby knows the best motors and development are at fpv cycle

Barbie motors!!!

I was going to buy the T-MOTOR VELOX but mostly because they are CHEAP AF 14$ a piece. Mainly because in alot of manufacturers these days you can't even get replacement bells (witch is what I mess up on motors) Then I saw this video and I think you sold me in your one comment about "selling bells separately" because EVERYONE should.

The revolution (no pun intended) will come in a novel stator pattern .

Alright sooooo I need 1 or the other 😂 well first let me ask are you discontinuing the 23mm Tall motor for these? If so can I request these in a white color too, I use all your motors from your 13mm and up and have them and white and love all my stuff to match or… hear me out can I get that raw finish in the 13mm? 😂

All of that could be measured if desired.... Motor rpm resolution is not an exception :) would love to see some data. Interesting idea for sure tho

It sounds like 2 smaller motors vs 1 larger motor spinning 1 prop? After thinking more about it, its the equivilent to more poles.

It feels like more throttle resolution because it reduces the motor reactance. It makes the motor softer on response. Aka weaker. I've never seen a skewed or staggered construction be a better motor unless it's strictly feel or harmonics issue being addressed. Or if the origional design is very poor in some factor.

Every video you release, somewhere a textbook has become obsolete (probably).

I wonder how am32 or escape32 would handle it.

Your findings of "should do this" not working as expected is because motors don't always follow simulations and it's much easier to screw it up than it is to improve the magnetics. It has nothing to do with the length or diameter, it's all about tooth shape, airgap, magnet shape, and magnet coverage. Skew and stagger will decrease motor efficiency and torque in 100% of the cases. Unless it's designed outside of regular parameters like super low magnet coverage or other silly choices. Or extreme detent force causing excessive unloaded amp draw, which is normally poor magnet coverage choices combined with delta terminating.

bummer I wish those bells would fit my 2207.5 motor I'd get a few sets right off

It’s a V12 vs a V6 engine brah. 🤙🏻🤙🏻

Any EU reseller of these?

Old school vibes

information 8:08 the reduced gap size (at the stator poles) helps to reduce cogging and cogging-related losses. the use of this low-tech offset magnet configuration 'increases' those affects. 8:36 COGGING. is the 'drag' that occurs when a magnet(s) is aligned with a stator pole(s). cogging is less apparent when a motor is running; but it's still there. specious remark. to the extent that it's possible, the generation of back-emf in a motor is minimized via stator design/materials. 11:05 bla-bla-bla-feels like-bla-bla-bla because there are Two sets of magnetic poles (on the rotor) where there was one set before, the number of cogging positions HAS Doubled.!

Looking at the stagger i can see some design problems that explain your poorer results. Your magnet width is too wide for full pitch stagger without overlap. So now you have a generous portion of magnet that is fighting each other and shorting to thr opposite magnet instead of flowing through the stator!

Also who was that blurry toothpick in the back???

send em off to chris rosser and he'll explain why you are incorrect lol

If rcinpower manufactures them for you, why can't you make a deal with them, to sell them alongside with rcinpower motors, worldwide outside the US? I'd love to get them in europe. Shipping and tax from the US is too expensive. Amazing how you get your motors so light. Lighter than rcinpower makes their own. What's the trade off ? Durability ?

Hert surgury motor

Hi kebab - you want to help everyone - produce a custom drone beraing press thatt makes it super easy to replace bearings. I race and always replace my bells - I hate replacing bearings - I damage them 1:5 that I replace - I'm not sure if I'm buying bad bearings or breaking them. Yo make a custom press and sell high quality bearing - I bet bearings are the missing link for efficiency - there is so much quality variations for bearing - stainless, ceramic, sealed etc.

mud grips v. street tires...

🤔