Watch Chris's release of his new motor! kzfaq.info/get/bejne/jbVhd5Oc19qWZHk.html
@williammorris176310 ай бұрын
What's the opensource software Kenneth! 🤖📻💾
@CarlPaulsen11 ай бұрын
Two legends, one video
@AdamFPV11 ай бұрын
Four links, none in stock 😩
@tito910710 ай бұрын
NSFW
@mcd345410 ай бұрын
For some reason i read "two legs one video".😂 sorry
@DINSTAAR-FPV11 ай бұрын
I'm glad Chris Rosser is using his engineering super powers for good and not evil. Awesome, amazing work!!
@MCsCreations11 ай бұрын
Well, he could work a bit on anti gravity as well... 😬
@aviatoFPV10 ай бұрын
Patents are evil, he went down in my regard by going that route. It's ridiculously expensive and doesn't even protect you unless you have millions to defend your patent with. Is Chris this rich already? You should read The Case Against IP written by IP lawyer Stephan Kinsella. You can read it online for free.
@throwawaypt2throwawaypt2-xp8nx5 ай бұрын
lol what is one example of sm that would be evil
@abertheham11 ай бұрын
At the risk of sounding like a terribly scratched record… we are so fortunate to have Chris. Science is my life, so his systematic approach to optimization is just such a welcome, needed, fresh breath of air in this hobby. I love Kabab and I’m genuinely grateful for his contributions as well. To each their own, but this is the level of engineering expertise that I have always wanted to see. Thanks for helping showcase and share the knowledge, JB!
@jameshatton421111 ай бұрын
Like a Rhinestone cowboy...... Those of us who know what I'm referring to like it 😁
@ROVERLORDD_10 ай бұрын
@@jameshatton4211 crap I don't have the reference
@dishwashersafe22210 ай бұрын
as an engineer with a somewhat similar background to Chris, I couldn't have said it better myself!
@CapnBry11 ай бұрын
Dude, I love this guy so much. It is incredible to get engineering insight into how our gear works in a way that manufacturers don't provide. Thanks for going in depth!
@spikester11 ай бұрын
Ya, braking ability was something not very focused on for optimization until now, yet it means everything in propwash handling from a latency reduction.
@lemonsquareFPV11 ай бұрын
Stack mounting; resonance cuts that we use in saw blades. It’s a good idea, with a lot of science behind it. I like it 👍🏻👍🏻
@RobertLeclercq11 ай бұрын
TIL what those cuts are in saw blades....
@lemonsquareFPV11 ай бұрын
@@RobertLeclercq they are for tuning out resonance frequency vibrations, exactly the same purpose as Chris’s application. I have actually tuned such systems in the past, and can tell you first hand how effective they are. 👍🏻👍🏻 Chris’s implementation is great, I’m actually super excited! Very cool!!!
@RobertLeclercq11 ай бұрын
@@lemonsquareFPV Yea I thought the motors we're cool, but them damn slits are cooler IMO.
@Inertia88811 ай бұрын
@@lemonsquareFPV I am absolutely loving Chis's damping slits, can't wait to see how they stack up. (🙄yes, pun intended) But I always thought the slits on saw blades were to keep the saw blade from getting too hot. I think it was one of those tool review channels that put that heat dissipation thought in my head about those slits on saw blades.
@lemonsquareFPV11 ай бұрын
@@Inertia888 love the pun 👍🏻 Look for winding/curving laser cut marks (basically what Chris is doing) or holes. Maybe Look at a few Freud circular saw blades and you’ll see what I mean.
@spikester11 ай бұрын
Sick. Bardwell, Rosser & Ian are downright the best trio for improving almost everything about our hobby. Keep it going.
@spikester11 ай бұрын
For 3d optimized motors they should start using hall sensors and depend less on the backfeed, maybe that could be useful for further ESC optimization.
@JoshuaBardwell11 ай бұрын
Sensored motors are only necessary if you need low-rpm torque, or if you're trying to do FOC, which we aren't. Back EMF is fine for the time being.
@spikester11 ай бұрын
@@JoshuaBardwell Thanks, that makes a lot of sense. Getting more systems on am32 and optimizing that open source ESC seems to be a better choice given blheli32 hasn't had the rosser treatment. Cheers.
@spikester11 ай бұрын
So it really only makes sense for the massive cinema rigs, 3D however could provide a whole new cinematography perspective. Sensored motors should improve things when it comes to 10" props with all the additional rotational mass & flux.
@zafosinferno88811 ай бұрын
Ok i m gonna play devils advocate. How major companies developing motors for years, with engineering teams and equipment worth hundreds of thousands of dollars, never heard of Nelder Mead optimization (which is a very simple Matlab optimization algorythm I might add). Chris is a legend, but I am sceptical on this one. I cross my fingers and hope it's the legendary, groundbreaking, physics bending motor he claims it is though :)
@abertheham11 ай бұрын
There’s some good scientific skepticism. I suspect Rosser’s response would be something to the effect of “let’s let the data speak for itself.” He set out to maximize performance and consistency and he claims to have done it. I haven’t known him to be a bullshitter but I guess we’ll see…
@andreabucciotti11 ай бұрын
I think you overestimate the amount of money those companies are willing to spend in r&d of a toy product. Which is zero. 😅
@zafosinferno88811 ай бұрын
@@andreabucciotti I like your name, it s kinda like my gamer tag "Bruschotti"
@420247paul10 ай бұрын
you mean like dji@@andreabucciotti
@garethsmith762810 ай бұрын
I don't know that those guys actually pay what it would take to attract someone of the calibre required to achieve world's best in class results for an application like this. Once they have viable competitive products the pure r+d budget might not be as large as you think. Buying best or cheapest stuff other people offer can look pretty cheap as a known quantity, compared to r+d costs with unknown time frames and outcomes. Plus to be fully vertically integrated as a manufacturer is very, very far from the norm these days, at least for consumer grade. So all around, while I am very impressed, I am not that surprised. Does anyone know what DJI spends on research in a year (as opposed to product develoipment)? And I wonder if maybe the people who might really care (the military) have not already arrived at a similar place, but it's classified. The only other people that might really make serious effort are the automotive industry, but the size, desired characteristics and acceptable manufacturing parameters don't neccesarily align as closely to small drone motors as might be thought on a casual glance. See my other comment here re optimisation of inductors and transformers for aerospace applications that I did for my university in 1993.
@remotecontrolaholic11 ай бұрын
I'd love to see him also apply this process to a motor for sub250 builds
@alexcook485111 ай бұрын
Two kg per motor is nuts, so exciting to have Chris applying his engineering skills!
@MCsCreations11 ай бұрын
That's a fascinating topic for me. I mean to simulate stuff and then try out in practice. Because then, if you find discrepancies... You make discoveries! Which can make our models and theories even better. 😃 A perfect example of it is cosmology. There's always a huge simulation running at some super computer, while we have things like the JWST making observations that we can compare to. 😃 Thanks a bunch for the interview, Joshua! And thanks for your work, Chris!!! Stay safe there with your families! 🖖😊
@baggszilla11 ай бұрын
WOW Chris and JB! You guys are so great for our hobby and I love what both of you guys do for all of us! I'm grabbing a couple sets of those motors boys! Cheers!
@openskeyedrones11 ай бұрын
The way Chris explains the technology, it makes perfect sense, AND he has the numbers to back it. I already see a few posts where people already have them…
@aphinion10 ай бұрын
Chris is just such an amazing contribution to this hobby in total. Love flying those AOS frames... let's see what the motor will feel like!
@GrimSpeedFPV11 ай бұрын
Chris's motor is going to do very well! He gives alot of time testing for us. People will support him!
@Inertia88811 ай бұрын
1st batch was sold out when you typed the comment I am replying to. The web page said the 2nd batch is expected to ship early Oct. I would be surprised if the 2nd batch is not sold out before they start the 3rd.
@GrimSpeedFPV11 ай бұрын
@@Inertia888 as much testing and knowledge he has people know it's going to be quality and standards. Yeah this with be a hot sellers
@jessehoffman530211 ай бұрын
Ive heard some people in the hobby speak ill of Chris rosser, one even actually referred to him as a charlatan. I must say though, after watching his motor testing video, i ordered the rcinpower WASP majors (because they had excellent test results)... and they REALLY are the best motors i have used yet. People can say what they want, but my own real life experience backs up Chris rossers testing. I am very grateful for the work that he has done for FPV, almost as much as JB. I trust both of their opinions over everyone else.
@genjitsu744811 ай бұрын
Yea, this is a tough one - I just posted something similar. However even though he is a bit cocky he probably does have some of the best results when it comes to technology in the drone hobby arena. His frame is cool, these new motors look awesome but very expensive, but what should the "best" cost? So I just hope he is a good dude and that our hobby is better off having him doing what he does for us. By the way, there was that one moment in this interview (at time 30:33) when Chris said "they are likely to copy design ideas of my motor and that will make their motors better..." and Bardwell kind of laughed - I took it as Bardwell saying 'man, you are full of yourself". How would you interpret that laugh that he gave?
@donaldgrosz629910 ай бұрын
@@genjitsu7448 they know a patent/copyright means shit when China clones everything with no repercussions.
@paulmillard113011 ай бұрын
I would say the influence of the ESC is just as important as the motors. The choice of components and the matching of mosfets plays a major roll in what happens to the motors. Fake components are also a major problem. Drones being as good as they are in general is something to be grateful for. Nice to see Chris being so enthusiastic on motors I'm sure he'll improve things.
@minhhungnguyen786711 ай бұрын
Waiting for the day when AOS branded ESC and FC are released. Also bit of nitpick but according to the data that Christ showed the AOS motor is only the second most efficient motor that he has tested. The most efficient is the MEPS Space (row 28).
@phong444410 ай бұрын
meps hiệu suất cao nhưng lực đẩy yếu òm, tính ra thì nó lại ko ngon, chỉ phù hợp longrange ông chriss cũng đã nhận xét @@minhhungnguyen7867
@xxfpvxx2 ай бұрын
can’t wait for these motors to ship
@RCRitterFPV11 ай бұрын
the Flight controler cutouts is pretty sweet idea. I could see where the gap would allow it to float. and could control the contact points.
@derrickcripe50711 ай бұрын
depends on the material. more flexible softer crap will eat more vibration. if its rigid as fuck vibration will transfer like its not even cut.
@Inertia88811 ай бұрын
@@derrickcripe507 It seems so simple and obvious, once Chris explains it, and shows how it works. I wonder if the direction of the carbon fiber weave would affect the travel of standing wave vibrations that make their way to the flight stack?
@DeMoNSe3d10 ай бұрын
That frame idea is amazing
@twiggy74911 ай бұрын
Chis Rosser's innovative work is absolutely incredible
@runpuppyfpv574411 ай бұрын
What a way to look at it Chris yes your motors may make other motors better thank you in advance
@micsherwood493010 ай бұрын
Two brilliant minds, leading the quadcopter world to a better place. Man, this is exciting!
@personal_preference11 ай бұрын
for chris, vibration isolation: think about mounting gyro/stack not to a bottom or a top plate. mount it in the middle by using for example the standoffs -sidewise. so its "floating" but stiff connected to the sides. the metal standoffs wont bend. OR: use the stackscrews as standoffs aswell. make them screwd to the bottom AND top plate additionally. it wont be likely that this area will bend if its connected in a "cube" bottom and top. its isolated for itself what do you think?
@colddash559811 ай бұрын
Chris: Hyper Parameter Optimization for AI models… Josh: mmm hmmm 🧐
@Flexo3D11 ай бұрын
The flight controller mount is a neat ass idea.
@jonah649611 ай бұрын
This new motor sounds awesome! I usually stay away from expensive motors, but I'll have to get these at some point! I hope they spend enough time in stock to grab them in the future. It would be awesome if Chris made a motor like this for a 3.5"! I bet they'll be a lot of prop deflection, I wonder if we'll need a new line of props in the future to handle both these motors and the general trend of heavier more powerful quads. Carbon fiber props would be interesting, but definitely too dangerous for freestyle. Great interview JB, this is my favorite type of fpv video! I really like the deep discussions about fpv products and fpv theory, as well as the science behind it all! I've watched all of your interviews with Ryan Harrell at least twice.
@twiggy74911 ай бұрын
I think Gal Kremer can independently test those motors. He has a Tyto Robotics thrust stand
@kkeil944911 ай бұрын
This is why I love using this guy's frames. So easy to get jello free video even with the different prop options, including dual blade.
@jessehoffman530211 ай бұрын
I'll be trying out my first frame of his when I build the UL 7 soon. Can't wait.
@fooojin11 ай бұрын
The aos 5 v2 made me stop trusting his stuff. Hope to be proven wrong here..
@jonnyphenomenon10 ай бұрын
Get this guy a Nobel prize.
@lameandboard11 ай бұрын
Can you go on a motor making spree? How about the most efficient 7inch or 10inch motors
@KipIngram9 ай бұрын
Ok, that vibration dampening idea is great - brilliant. One of those things that once you've seen it it's "obvious."
@IanMacKenzie_IIsWe3 ай бұрын
Awesome. I love how Chris dives deep and truly innovates. That spreadsheet though... showing 6 decimal places / 10 significant digits for thrust measurements?
@anthonydavinci79859 ай бұрын
Logic and rationality are limited to what we know sometimes assume. Breakthroughs happen unexpectedly often enough thru accident. Therefore restrictions for preconceived efficiency can be counter productive. Many proto types are test for unexpected out of the box or reaffirm your expectations. Great discussion !
@jimwhit11 ай бұрын
Joshua Bardwell for president!❤
@coffeedev64311 ай бұрын
These are totally going to be in my next build!
@goldbornmusic202511 ай бұрын
Excellent Interview I hope it works out well for Chris he seems like a really nice man, thankyou Joshua👍👍👍
@luke.perkin.inventor10 ай бұрын
I'd love to see more low KV motors for use in robots, if there's a way to get just a few Nm of torque out of a 200g bldc at 250W for £50 we'd have jumping robots, amazing CNC machines and emobility for everyone!
10 ай бұрын
This all sounds great on paper. More efficient means less heat which is great. Now lets hope the bell design can handle a beating.
@Kabab11 ай бұрын
Very interesting approach to the vibration situation. More recently I've been testing a change in the orientation of the main deck and how the arms attach. I'm finding some nice consistent improvements. Combining this with Rossers cut outs as well as bracing for the areas around the carbon bridges to the stack may lead to further improvement. I'd love to push the limits of the motor software to inspect some of the unique motor designs I've come up with. Especially if it can deal with reluctance forces. Not just for FPV. Rosser and I historically seem to be on the same wavelength so I'm sure I can just wait and he'll come up with similar ideas on his own. Lately I've been looking into things that there are no answers to. From motor designs, gearboxes, batteries, battery management, carbon integration and manufacturing methods. There's a shocking amount of bad engineering out there across a wide variety of industries...
@mikebergman181711 ай бұрын
You should clone both his motor and frame for the lulz.
@Brian-S11 ай бұрын
I have a friend in the carbon fiber industry and when I showed him some of the best frames on market he laughed at the quality of the carbon lol. Just simply changing layups and resins you can get astronomically different results from just the carbon itself. Something I've been looking into lately myself for some non fpv related stuff
@DeyRonUSA11 ай бұрын
Still praying you 3 (Chris, Bob, Ryan) get together and tear the roof off the hobby...
@Kabab11 ай бұрын
@@Brian-S Most people from other industry is look at our construction materials and think it's comical how bad they are. I have tested some of the The best carbon out there according to the manufacturer and have found that there are actually quite a bit of improvements that we would gain however the cost is also astronomically high so the value proposition just isn't there. Cost is really the crux of everything. If you can't make it cost-effective enough to be used in any reasonable application, why bother developing it.
@RickLaBanca11 ай бұрын
Yea I was going to say it’s not bad engineering but practical engineering. We can’t have supper expensive fiber in these kinds of destructible quads. Trade offs.
@Voidroamer10 ай бұрын
This sounds good! My only worry is magnetic dust.. There's a lot of that in the bandos we fly here around Denver, can really kill a motor quick when a bunch of it gets into an air gap. But hopefully the less leaky flux ring will help!
@confuseatronica10 ай бұрын
huh maybe someone needs to design a kind of plastic gap wiper thing that somehow scrapes the inside without getting stuck and without blocking too much cooling air. Or, maybe we start sealing the motors up and do cooling some other way...
@cabe_bedlam5 ай бұрын
I learnt several things today!
@sethklemba10 ай бұрын
I found a long time ago that switching to 3d printed soft mounts with a firm tpu. Worked way better than purchased silicone soft mounts. Probably for this very reason.
@jessjess33697 ай бұрын
Basically chris is a fpv engineer we all need💀
@michaelwhouse4611 ай бұрын
Great talk. There's not a more solid guy in FPV.
@bulufish820811 ай бұрын
This was a learning class. thank u both of u.....................
@TheQuantumFreak11 ай бұрын
Guys this show was fantastic!
@flapjackfpv10 ай бұрын
Legit the first time im excited to try AOS and rooting for Rosser... in the past ive had opposing experiences to his test result's including his first frame design and motor analysis. Causing me to disregard him completely. I hope I get a chance to see and experience these motors and frame designs for myself
@Cloud9FPV10 ай бұрын
I may not be a engineer. But I love freestyle quads and motors. I have flown a few types. I would enjoy making them scream.
@mdrbal9 ай бұрын
I had a few years ago same idea virtually, but never tested it in production. In the video the cut around is very simple and I believe it is like very un optimized solution. I have been think to properly create mechanical resonators tuned for specific freq. by cutting the frame in very specific way.
@flyinbots11 ай бұрын
Very interesting, FYI there's a few minutes of dead space at the end of the video (39:58 to 44:23) that you might want to chop out?
@MCsCreations11 ай бұрын
Looks like he did. 😊
@artisticyeti2211 ай бұрын
Can't wait for Joshua to test these 🤩
@SkyMissionsClub10 ай бұрын
sounds like the fpv will be perfect with this guy products. will see
@edcbabc9 ай бұрын
That's very interesting, especially the frame stuff - to me, anyway. I fly small quads up to 4" props. Recently, using a commercial one piece frame (2.5mm CF - carbon fibre) I have had big problems with loop stability with aggressive props, had to back off gains a damaging amount. A friend with another similar commercial frame (3.5mm CF) didn't. But, his frame was 33.5g as opposed to mine at 23.5g - a big difference in a 200g craft, 5%. On the basis that the biggest contribution to stiffness comes from mass furthest from the centre of gravity, I then made a frame (I have the CNC tools) from 2x 1mm outer skin CF, with 2.5mm core of 3D printed polycarbonate/CF. Total was actually about 4.2-4.3mm as the 1mm skins were slightly less than 1mm. Big improvement, no stability issues. Carried out some relative deflection measurements and it showed the arms (same XY plane shape) were a lot stiffer. Relatively, my original 2.5mm frame under a set load deflected 0.33mm, my friend's 3.5mm frame 0.11mm, my 4.25mm 'sandwich' frame 0.06mm. not only that, it only weighed 25.5g, less than his. So, a big stiffness to weight improvement. It seems to me therefore that stiffness to avoid coupling into the gyro is very important. In the past on smaller quads (2") I've also got measurably better gyro/accel performance by AV mounting the motors. Of course the downside of the sandwich approach is likely damage in a crash, the arms will be less strong as the 3D printed material does not contribute much to the overall strength. Depends how much one values performance against robustness. The tool I use for designing this stuff is FreeCAD, and that does have an FEM (finite element analysis) module. Therefore since one is only after relative qualitative improvement, it might well be interesting to experiment with different shapes / cutouts using that.
@rilijn10 ай бұрын
So interesting! I hope he applies this same core concept to smaller motors, too! I love rocking motors with a 5mm hub on my 3.5” but motor choices are so limited. T mount sucks (hats off to those of you that can consistently get the damn screws into each hole for each prop, but a single 5mm shaft is just so much easier). I’m rocking xnova, but would love more options!
@hateeternalmaver11 ай бұрын
The cool thing about being "just a nerd" in the drone industry is, you're always professionally surrounded by all the engineers and designers etc. that don't have any personal interest in drone flying as such... ;)
@uavtech9 ай бұрын
Not for nothing: They are 22.5 x 07.5 So 10% more volume but the same weight (approximate) as 2207. Bell is much lighter. So less durable? It then becomes a finite analysis on strength comparison. So that would need to be done.
@ManuPithiviers11 ай бұрын
I would only have liked to have a little more images to accompany the words, for those of us who are not native English speakers it would be better. But it is spectacular to see how far this can go, thanks to people like you. Thank you so much
@solvend11 ай бұрын
Durability tests are next. How does it handle crashes into hard objects
@testboga599111 ай бұрын
Excellent approach to engineering a better motor!
@jdsstegman10 ай бұрын
He is absolutely right. If we were at the limits of motor technology, they they would all be at the same power level, amp draw, and performance. But they are not. As most of us know........ Excellent point! And pretty sure how he did it. Been on my mind for about 20 years........ i hope im right and he made it.
@SwainixFPV11 ай бұрын
Im interested in seeing JB's test of the motors now ahah
@b.w.oostdam887511 ай бұрын
Incredible interview! What wonderful knowledge and information. Appreciate it very very much. Thank you!
@grepboy11 ай бұрын
I'll be interested to get my hands on a set of these to try them out. Chris Rosser definitely has his stuff together and is very knowledgeable, I always fear that efficiency and durability are inversely proportional - maybe he solved this one? Can't wait to find out.
@shellbournian11 ай бұрын
Chris is a treasure
@bigdatapimp11 ай бұрын
Those cuts are pretty smart. Allows the rest of the base plate to vibrate, but not pass that into the stack, via a ridgid compliant mechanism. The same opposite of the gyro basically.
@edclevel40211 ай бұрын
Chris is amazing.
@marcfruchtman947310 ай бұрын
Great interview. I would really love to hear about the entire process of filing the patent, including how he decided it was worth the costs... I was always under the impression that the costs were prohibitive.
@aiRxShop9 ай бұрын
I like the frame design for the fc stack. He essentially took wake/wave dampeners in lakes and oceans and applied it to the stack… but scienced the fuck out of it.
@PRAR196611 ай бұрын
Great interview ~ 10~30% variability is huge.
@hiteck0079 ай бұрын
Well lads, I been listening for the whole video about dry engineering, but 2 things I hadn't heard mentioned is that makes worlds difference is firstly the winding density in the motor, Is it wound with round wires or are they rolled square wires to fit more copper & less air gap in the conductors to give a more intense magnetic field in less volume of windings. Also I have heard nothing about the 3 phase controllers for these motors can be drastically different in the way they deal with back EMF & drive switching, Coil resonance & ringing problems. Anyway I guess that's another video hay as all I've heard is about tweaking mechanical materials & design which is very impressive but do consider the electrical side too which is a whole nother kettle of fish.
@Kylemestyle11 ай бұрын
definitely gonna be checking them out
@peceed10 ай бұрын
Responsiveness should measured by thrust change per second - it would allow to include propeller issues. In absolute and relative terms. For example how quickly engine spins up from 0% to 90% of thrust , and from 50 to 75.
@snviper10 ай бұрын
I hope for super efficient long range motors. I'm going to get that 10 inch AOS too I am super happy with my AOS 7 UL.
@JustKeepLivingFPV11 ай бұрын
I dont want to put you on the spot chris rosser: every question puts him on the spot😂❤
@BudzFPV11 ай бұрын
This is very informative
@keithcarpenter525410 ай бұрын
This is like a bore and stroke job on an engine.....same weight, mo power.😊
@ShebanFPV8 ай бұрын
I think Chris is always more about “synthetic” numbers, while Bob is always more about real feel and performance. Would love to hear Bob’s thoughts about this “most powerful and most efficient motor”.
@robertglenn99939 ай бұрын
It would be nice to see these motors for all size ranges of quads. It would also mean you could run the smaller motors meant for a race or freestyle quad in its size category on a bigger class quad for insane efficiency builds. Ie a 1305 or 1404 on a 4 in .
@redreefbud11 ай бұрын
I bought a set 😁 just because they sound awesome 🤯 looks like I'm building a fpv 😁 i have a mini 3 pro 😉 thinking about an 03 air unit to go with my DJI rc. I have been looking at the hobbyking orca as well. Couple months I've been seeing that around. Also saw a speedy bee frame 🤔 master 5 v2 i think. That looked interesting 😁 guess i need to go back and watch some more videos. Thanks for everything guys 😁
@yarbsfpv11 ай бұрын
yoooooooooooo. Now please Mr. Rosser do the same science to all the popular quad sizes! 3.5" next!
@MountaineerFPV11 ай бұрын
Well done interview JB 👍👍
@IronOre3310 ай бұрын
For a fpv drone radio, which gimbal is the throttle default like, which one is the one that most people use
So it weight as much as the 25mm imperial motor ~34g and make more power than a 28g 2207 (Five33) motor? This is really interesting, but don’t call it 2207 if it’s not a 2207. An extra 20g in a build isn’t really that much I suppose.
@genjitsu744811 ай бұрын
Looking at the spec-sheet it does look like it is a 2207. This is also among the highest prices for a 2207 motor out there. RCInPower is also way up there... but something bugs me about all of this - In Chris's testing of the motors, the Mr Steele motors stunk - they ended up at the bottom of the list. However, watch Steele fly with what those "shyte" motors and tell me anything is missing at all??? (note that Chris tested the V4 motors so it is entirely possible that the V5 motors have fixed things and have become one of the top performers - we would need to see Chris test the motors to find out.) Perhaps the Steele motors truly are at the bottom of the list and who knows what he could do if he got his hands on the ultimate frame, motor, FC, and tune - perhaps he could do tricks and maneuvers that we have never even seen yet... perhaps we haven't even seen anything yet but somehow I just don't see it... His quad flies awesome, his tricks are amazing, his reaction times and ability to sense his surroundings and hit tiny gaps is just awesome. So how come Mr Steele can fly so fricking amazingly well with the worst motors? How do we make sense of this? Because we all have the same question to answer - what would be best for me -The torquey-est, punchy-est most powerful motors that money can buy, or Mr Steeles Ethix motors that came in last place? I would love to fly like Steel does... so which motor do I pick? I do wish Chris the best of luck with his new motors - I am sure they are great and will do well. It would be nice if they were not some of the most expensive motors in this size category. I do wish he was a little more humble though... it is not bad, but there is something there sometimes... he does seem like a nice guy though and I do like his 5" frame, looks cool, I am sure it flies great.
@rowannadon766811 ай бұрын
@@genjitsu7448FPV is 90% skill 10% gear, pretty sure Mr Steele is just skilled. The objective numbers speak for themselves as far as exact performance goes though.
@genjitsu744811 ай бұрын
@@rowannadon7668 90% skill for sure! But the question - do I personally need the motor with the most torque, the highest thrust values or would I actually be far better off with a motor that came in last place??? I think it is possible that if we were not told what we were flying that there could be a chance that we simply somehow fly better with "weaker" motors. I am a bit perplexed about what I should actually get to be quite honest. Anyway for some reason I have my sights set on getting a drone dressed in the Pyrodrone colors - blue and orange - they have the Hyperlite motors with the same colors as well - eh, I don't know, I just like the color combo but I am wondering if the Hyperlite motors are any good? I suspect they are perfectly fine and I should not think too hard over it... but I can't help it!!!
@Kai-P11 ай бұрын
@@genjitsu7448 It's the same in every hobby, nobody needs the best hardware, it's just part of the fun knowing to have the best.
@chrisfriesen791310 ай бұрын
There's no reason to expect a worse-performing motor to fly better, but by the same token most people will be limited by their own skill far more than by their equipment.
@GeorgeTsiros9 ай бұрын
23:05 you can also make the ESC compensate for that delay by sending out a higher-than-necessary current so that the motor reaches the required RPM in a shorter time? If the current required to spin at 2k RPM is _x_ A, instead of sending exactly _x_ A to the motor, send _2x_ A or even more, for a short period and then ramp back down to _x_ A when it reaches the target RPM. Unless they already do that (wouldn't surprise me) in which case 🤷
@JoshuaBardwell9 ай бұрын
What you're describing is accomplished by feed forward in the flight controller's pid loop. There's no need to also have the ESC do it.
@GeorgeTsiros9 ай бұрын
@@JoshuaBardwell sure, i mean, in my head it makes more sense for the ESCs to do this instead of the FC, but not that it matters, they could be all in the same chip for all we care
@JoshuaBardwell9 ай бұрын
All the FC cares about is making the gyro change. It does this by changing the motor outputs up and down. The FC does not care what the actual RPM of the motor is. It just cares how the gyro is changing. An ESC-based PID loop that manages RPM is unnecessary. It would add complexity and delay to the system. The ESC does not know the gyro data and does not know how fast the motor should be moving. All the FC needs to know is, "Is the gyro moving correctly? If no, then increase or decrease the motor output."
@JoshuaBardwell9 ай бұрын
Just to be clear, what you describe -- the ESC being told to drive to a higher-than-necessary RPM -- is exactly what feed-forward does in the PID loop. It's just that the ESC is kept dumb and it just does what the FC tells it to. Since the FC is the one what knows what the ESC should be doing, this works well.
@GeorgeTsiros9 ай бұрын
@@JoshuaBardwell Thank you so much for your very detailed explanations. As a token of my appreciation here is the setup of my attempt at making a thrust/power measurement setup i.imgur.com/FIbywAM.jpg some year ago . I suspect I had not chosen a correct prop 🤔
@MattiaChiarelli11 ай бұрын
Loved the video! Very informative!!
@nickoutram693910 ай бұрын
Interesting video. The method Chris has used here is very similar to the way neural networks (/AI algorithms) are trained to do whatever they do so it's not surprising that the tool he used is to wrap the MIT algo is 'borrowed' from that field. I think more and more engineering is going this way actually. Come up with a digital twin and throw millions of tweaked model variables at it.
@Tom-wl9sx11 ай бұрын
Very interesting video, I have learned something today 🙃
@gyrogearloose134510 ай бұрын
Wow! Electric motor designer uses magnetic analysis tools to optimize a motor design! Extraordinary! Whatever will he do next?
@JoshuaBardwell10 ай бұрын
And yet nobody in FPV has done it before. It was so obvious, how did they overlook it? Maybe he deserves at least a little credit?
@gyrogearloose134510 ай бұрын
Hmmm . . . @@JoshuaBardwell
@kellywasden11 ай бұрын
Chris Rosser - Basically the Apple of FPV... "We think you're going to love it"
@GibroniFPV10 ай бұрын
It'd be cool to see a top plate with these cutouts for vibration isolation for the action camera mount
@fabiomariotti_ps10 ай бұрын
But what is the tool? The finite element modeller? Is it open source? There is many .?
@battyroy389410 ай бұрын
Must have now....
@rollbot11 ай бұрын
wow! what an amazing salesman!! love it love it heres my CC!!! take it lol seriously , such a good topic!
@oliverrichter82869 ай бұрын
I want that ship/ motors :-) I guess I need to do special pid tune for that motors?
@stanescutheodor242511 ай бұрын
started listening to the video rather than watching it and my first thought was " is that tom scott ?! " haha
@Anzyclos11 ай бұрын
We need the ultimate build, no comprimises. Fastest videolink, fastest RC-link, fastest stack (h7 DShot1200 vs Kiss) these motors, least noise frame and even use dampening grease. Is it going to be revolutionary?
@RCRitterFPV11 ай бұрын
I could imagine a larger carbon fiber plate covering the flight controller gaps used with dampening grease could really be used as a damper system.
@grapeape7805 ай бұрын
we're yet to reach the point of diminishing returns. that's good news for future development.
@GeorgeTsiros9 ай бұрын
19:30 no, no we're not. Weight is crucial. 4 motors 34 g each are a total of 136 g, that is _not_ insignificant. The frame is how much? 80 g? 100 g? what's the thrust/power curve?