My final magnetic gear is so powerful, tbh I didnt expect it either!
This video presents the building of an improved version of the magnetic gearbox I previously built, the engineering challenges in making it, and testing the final magnetic gearbox for things like torque capacity or efficiency.
CNC machining, 3d printing , PCB and more: www.pcbway.com
Magnetic gears use the magnetic force between sets of non-contact permanent magnets. Their non-contacting character eliminates the need for gear lubrication and the wear mechanisms related to mechanical contact. Magnetic gears have the significant potential to reduce the strong, tonal vibration and noise inherent in mechanical gears. Besides, since magnetic gears are based on the same physics and use the same materials and many of the same components, they can be easily integrated into electrical machines.
This is where boundaries are pushed. Micro electronics, 3d printers and other now accessible tools make it possible for geniuses to be geniuses. Well done.
omg the gearbox is 10 times the size of the motor and uses an unacceptable amount of rare earth for what it achieves, actually people like you being gullible is what keeps youtube full of this crap. This person is no genius.
@@jamesmelemede5610 hey, while it might be useless it's more of an experiment not a product to be sold. I like KZhead how it is because KZheadrs can make things that are not optimized for profit yet still get money it incentivizes interesting content and doesn't constrict you in doing things only for profit. Like man gearboxes are great and all but where else you would see one made of magnets - KZhead.
@@jamesmelemede5610 You do realise this is just a prototype right? Plus it has many advantages over a mechanical gearbox: No risk of grinding gears and potentially no need for a clutch for one. Instead of mechanical sheer forces we have to deal with overheating, which is a much easier issue to solve.
@@peterhoulihan9766 BULLSHIT. you clearly don't know what you are talking about.
@@jamesmelemede5610 Bro, if youtuber without huge expirience knowlage, expencive tools and lab of engineers can produce this gearbox, then maybe, just maybe in perfect conditions it has a lot of potential. Or simply one specific fucking task? Can't your GRAND and intelligent brfain comprehand that????
Wish there were more of this type of content on youtube. Love progress/upgrades on engineering projects
omg the gearbox is 10 times the size of the motor and uses an unacceptable amount of rare earth for what it achieves, actually people like you being gullible is what keeps youtube full of this crap.
Same. Really disappointing how dismissive and unimaginative engineers and especially "engineers" can be.
@@jamesmelemede5610That was an unwarranted insult... This is a prototype, and it using as little of rare earth magnets isnt its purpose. A person just wanted to make a magnetic gearbox. Also isnt it quite usual for gearboxes to be bigger than the motors, especially if they need to do a massive reduction or is made out of weak materials like plastic? (Or is a prototype?)
@@custos3249Its just difficult to pull this off. It can be exhausting and costly in many ways. So gotta appreciate and celebrate those who do it
@@karyjas1 I get ya, but that's why we can't have nice things. Be it intellectual laziness or R&D costs being so artificially high thanks to market capture, patent law, or just simple low wages very, very few people can manage to put together a prototype, the result is stagnation and learned helplessness. And it's even worse when people assume tossing around napkin math and a 9th grade grasp of physics makes them Grand Poobah on Turd Mountain. Currently dealing with the type elsewhere related to rotary valve engines.
the slip torque of this gearbox is actually crazy. the idea to use a planetary style and everything else that went into designing this motor is pure genius. with the ability to transfer such a high torque it shows that magnetic gearboxes have far better potential than i think many people realize.
Looks expensive
@@matthewfredrickmfkrz1934for now. economies of scale are possible if there is a strong enough need.
@@matthewfredrickmfkrz1934 With the exception of the bearings, there are no wear parts. Plus, an over-torque situation results in slipping instead of stripping a gear. This could seriously reduce wear and maintenance in some applications.
@@arthurmoore9488 85% efficiency for simple gearbox is a verdict.
It is dramatically more expensive to regularly replace bearings, disassemble and relube gears, or have massive failures when gears are over torqued and strip or at worst shatter and break other parts.@@matthewfredrickmfkrz1934
Idea. You currently have a fixed gearbox, but what if you were able to adjust the number of poles on the fly? Say by having an inner cage and then moving it between different housings, or play around with some electromagnets. You could have not just a gearbox, but a clutch-less transmission!
Good idea, will try it myself
This video/project was *professional* , the testing and full on *production engineering* to an extent is really refreshing when some may not go to those same lengths. Really well done!
I used to always point out the reasons why something will not work for real applications, but I changed the way I look at ideas now. Who knows where it will be applied in what form (full, partial or modified). Amount of preproduction work that is study, modeling, printing or machining, presentation readiness and all the unseen trial runs etc and then the whole storyboarding, production and post production work, shows his level passion on the subject. I want to see the behind the scenes now right from study, research to post production of the video....
Dude you are such a monster, not many viewers will understand the work, effort and knowledge that you've put in the video. Keep going like this buddy it's insane !
11:02 I can't believe you mounted it to the lathe and then chose to dremel it rather than just turn it on the lathe xD
because the case is made from plastic and it will be destroyed if use lathe but dremel did not make so much force to case.
Gearbox with magnets I have been thinking about for years but I don't have enought experience about it. Well done! You did it. I watched your video over and over again to understand what you have done and amazed with your engineering and effort. As a mechanical engineer I congratulate you from the bottom of my heart.
some of the best projects period. really well done man. impressive! keep pushing limits
Thank you for putting in so much effort and sharing your findings with the world!
Another amazing video, good work! I am seriously impressed with your progress and at this rate I feel like magnetic gearboxes might be everywhere some day
Amazing video! Very inspirational, the level of detail provided, formatting, truly awesome.
This is very interesting and original. I like your process. Very methodical and precise. I subscribed, and this is the first video I watched.
dude I was geniuenly sad when the video ended. Keep it going :)
Cannot wait for your next video!! This is so informative as I am also fascinated with these topics but don’t have the access to the equipment that you do, or the dollars to currently put toward the materials from pcb way quite yet. So, I am always so interested and excited to watch you explore these topics I’m super fascinated with! And you have been following the ideas here as I would plus you always add some ingenious details I would not think of, well at least certainly not nearly as quickly as you do; so I eagerly await your videos in this series the most so far to live vicariously through your workshop and materials and watching you problem solve and create! Thanks for what you do!
Nice work! In my bachelor thesis I constructed and build a magnetic gearbox around the same size as yours. I managed to get 60 Nm of torque out of it. One important thing is to get the magnets as close as possible to modulator. If you want i can send it to you, its in german, but google translator can help you :D
I would love to see! Would you send it here: semidiych@gmail.com
That sounds pretty awesome.
How does your magnetic gearbox compare with what's generally available with more traditional gearboxes?
@@retsetman9698 i send you the thesis:)
@@MM-24 They require less maintainance and the cant break due to overload, because the just slip if overloaded
Ingenious design, with a lot of great improvements. You can have even more torque if the magnets in the center were mounted on a much stronger and stiffer material. The reason for this is that as you approach higher levels of torque, the material holding the magnets is starting to bend, so you lose tolerance. If you can tighten tolerances, and use stiffer materials then that will greatly improve torque. You might be able to find a ferrite bar and shape what you need instead of cutting little tiny pieces of aluminum? (worth thinking about to save labor) Great Inventiveness.
Well done, and thanks for the efficiency testing. Seems like most magnetic gearbox's aren't very good but yours is great! You certainly put in a lot of work.
This is excellent work. Thank you!
Thank you for this brilliant demonstration! :)
First video i watched, hooked instantly. Can't wait to go through your content!
Great work, development and explanation. 👍👍👍
Nice work and excellent diagnostic reporting. Don’t ever stop what you’re doing . You only learn by doing .😊
Awesome video man. Great work!
Amazing project, dude! Keep it up!
Wow this is truely amazing
Just amazing... how you evolved it is just mind boggling.
7:01 This would be a good application for the Electrochemical Etching thing “Applied Science” design for “Photochemical Machining” !
Omg. What a hard work you did to make this video!
really cool stuff. thanks for showing us
I'm only part way through the video, so maybe you tested this, but I'm curious about the actual efficiency. Well made gears are quite efficient, and I wonder if induction and eddie currents will work against you just as badly as friction in a traditional gear system would. This is super cool though! It works so much better than I expected. Edit: oh, nice! You tested the efficiency! I can't wait to see what you do next.
I think KZhead needs a super like button next to the like button. I really appreciate the explanations behind all the choices and changes. And seeing (through the graph) the result of all the work going into such a smooth operation to prevent cogging torque, that was fascinating.
Thanks for building this - I'm trying to make some mag brakes for my bike so I can do some regen but also to save my brakes on really long gradual descents. I keep burning them up...if I only use them for low speeds/holding then they'll last a lot longer and work a lot better when I use them.
This is fantastic. Well Done!
This is so cool. Keep up the good work.
Wonderful video! 👍 Thank you for doing so much work and sharing it with the world. 🏅🥰
Woah thats a super nice improvement. Especially with the magnets not heating up at all. I wonder what else you could improve from here?
I love your progress:D
Thats really fascinating. And your metal work is great. Together with PCB way you could build a final version Out of Metal or Carbon.
Heckin cool low maintenance gearbox. Would be cool as heck if there was like a configurator for build it yourself variants.
Freaking awesome man!
Excellent work 🎉
Allright my dude you earned my sub we see you at 500k soon
The sound of the gearbox was so cool!
Excellent work
This is awesome.
So genius!
Excellent work!
This could have interesting use cases where obstruction of the mechanism by limbs is a risk factor. Like in places where people are working close to open gears or something, this could possibly used as a safty gear, that would have just enough holding force to move the shaft it needed to move, but any more resistance, like an arm or leg getting in the way, would be enough to push it past the magnets and stopping amputation. Really cool.
New subscriber here and this is incredible!!! I need one of these....
Most impressive. ❤
Awesome stuff! Have you ever looked into 3phase torque conversion? That is, 3 phase motor such as any brushless hobby motor used as an alternator to transfer energy to another motor to have non-linear torque transfer.
Dang this is amazing stuff.
Monumental work!
This is amazing! I wish I could get one of these with a 5:1 ratio for my tractor. Then I could use modern 540rpm CCW impliments from the 3250rpm CW power take-off shaft of my 1980s machine.
great job looks exciting
This is wonderful.
Love your work. Very impressive! I have a new project Idea as a follow up: Replace the inner rotor with the stator from an Outrunner brushless DC motor. A rotating magnetic field from the stator should be equivalent to your inner rotor. Essentially you would have a internally geared Brushless DC motor!
@@retsetman9698 Also, heat, you would have an unventilated heater inside. which would mess with the modulation amount and the magnet life span. it would be better is the exterior part was stationary, as it would be easier to cool (big surface area, lots of copper to allow easier dissipation), but electromagnet halbachs are weird tho.
@@giuseppebonatici7169i had similar thoughts of an exterior electromagnetic coil set around the outside that could be modulated in such a way as to create a potential locking effect to increase output torque with little &/or variable energy input.
u guys are cool
Nice research video🎉❤, can you explain what is the point making a magnetic gearbox instead of cutting conventional gears?
Great job mate, this is really interesting & inspiring stuff. I wonder if you could play with some electromagnetic coil configurations on the exterior, to possibly add some more torque through a locking type effect like a BLDC motor controller perhaps & add some extra variable torque using a smallish amount of controlled voltage or current to a set of externally fixed coils so you can manipulate a rotating field for efficiency. It may not require a lot of power to give a decent torque increase & being external would lend to easier cooling methods & serviceability. One last thing, were your laminations compressed together nice and tight? It might have been me, but they looked like they could have been compressed a little more. TFS. Sub n like. Cheers
Looks promising. Try 40% glass filled PEEK (Poly Ether Ether Ketone) instead of PLA because it deals with heat better (You may have to upgrade your 3D printer though) and Mu-Metal shielded magnetic bearings?
Love it! Great follow up video! Nice work! What is the outer diameter of the whole assembly? From an engineering standpoint, it would be great to see what the maximum torque that could be transmitted, with the restriction of making the gearbox diameter the same as the motor (like a traditional DC motor sold on amazon with a spur gear based gearbox).
Check out the description
The image of the halbach array induced fields looks like there is some room for pattern adjustment to improve the efficiency.
Question would it work to create some kind of a bracket that as the motor spins the centrifugal force would cause the magnets to feather out that would similar to the way a CVT works essentially combining this with a CVT?
I was just learning about another way to get the benefits of laminated steel without the issues of laminating steel; at least kind of. Either way, think a bunch of iron filings or iron from the ground, picked up with a magnet, set into a binder and poured into the shape of choice. Edit: I just tested a small mix of ground iron and clear gorilla glue which upon testing with a digital multimeter showed no conductivity. The properties seem quite similar to laminated cores. I do however have reservations of the particular glue I'm using to cure in large batches. Perhaps epoxy would be a better binder; yet I have not tested that.
That's a pretty good idea, but i would include a diamagnetic filler in addition to the metal. You want it to form flux tubes and you want to trap the flux in those tubes. Otherwise you'll have the flux tubes rearrange as the surface fields change.
@@Unmannedair I'm researching that now, thank you for the info!
Those would be nice for application where you need the torque limiting.
if you're trying to get rid of the clicking noise, you could try putting some lapping compound inside and running it slowly for a while.
This reminds me a lot on how toyotas ecvts work. Though while similar I think this gear box scaled up can do some real work.
Thx 😊!
You could put such a modulator between the stator and rotor of a conventional BLDC. How extreme of a gear ratio is it possible to achieve? It would be nice if PCBWay or JLC or whoever did silicon steel lamination fabrication.
Would love to try making one of these myself someday, they look fun! xD
Nice, I'd love to see how much backlash there is with a load close to 100%
I love this!
Very interesting!
Now this is impressive
reckon it would be accurate enough to use as a telescope tracker with a stepper motor ?
Highly innovative probably good for high end ev
id be curious what a scaled up version would do. maybe push a go cart or something bigger if done right.
Hello, Is it possible for change permanent magnet to coil magnet? I think about , Replace this in CVT Scooter.
THE FLUX MODULATOR!!! GREAT SCOTT!!! 😀I wonder how long and you will achieve the FLUX CAPACITOR!! 😀Please make it to use 1.21 GW! Please! 😀
Do you think a minimized or megamized(?) system could be used to increase efficiency of a hand crank generator? This would be fascinating from a survival energy perspective.
This vid got recommended to me out of the blue. I enjoyed it. However I'm not 100% sure about it's application as this is the first vid I've seen. I am a aerospace machinist shop monkey (I make the gears that go into any jet turbine engine. Military or commercial.) so if you ever need any help with that side of things I'll be happy to help. The clicking at the end is likely due to either the amount of runout which gets exaggerated with higher RPMS or (Most likely) the thingy a doo is poorly balanced which is causing runout. And seeing how you somewhat crudely cut those aluminum spacer things I'll be willing to guess that's the main issue. Anyways I love watching these kinds of vids.
Would it be possible to harness the eddy current as electricity? And would it increase the slip torque? But i guess harnessing electricity from it by using copper would also lead to increased heat.
Excelent bro
Wow Dude, nice!
I think this is beautiful for applications where you want slip at certain torque loads.
Yes, slip with no damage, amazing
@@violinviolator5841I will note that there are other ways of doing something similar. Many lathes have a system where the lowest gear ratio is coupled by ball bearings pressed by springs into divots on another gear. That way, when I do something stupid, it overcomes the spring pressure and slips instead of breaking the lathe.
@@arthurmoore9488 That's cool. I wonder what applications there are where this is specifically better suited than a mechanical design such as your lathe employs.
@@gormauslanderProbably anywhere that slip torque is expected regularly. I've seen the design for my lathe have trouble re-engaging, but it's fine since it's more like a circuit breaker than something I ever want to use. Direct drive, or near direct drive, hydraulics and electric motors could also probably slip without damage, but anything with a gearbox this has potential as compared to clutch pads.
This guy could easily make a John Searl Generator with those skills :O
i have no idea what i'm watching but i like it
i think gear teeth gearbox would deliver more torque for that enables the magnets to be inbetween eachoher... so maybe a planetary gearbox or any with interlocking teeth
Uhm. You need to properly measure output power. 80 percent is shockingly good, but a properly scaled single ratio gearbox has low single digit losses. Nice work though, and magnets are obviously a cool source of unique properties.
Great work sir! So the gearbox is ‘absorbing’ about 3.4 Watts, which it is big enough to dissipate by radiation. Nice.
Actually not exactly correct, that value of 3.4 Watts is achieved by zeroed the scale, PSU gives 160 ish watts, the motor efficiency is about 35% so the power in the input shaft actually should have be around 60 watts, and with the 85%ish gearbox efficiency so now the loss is about 10 Watts, hope I’m clear
Efficiency? If input 100W how much output is? Maybe need cooling?
Please try creating a hub motor with this gearbox
Question and Idea. Can this consept be done in 90 degree angle?
Use alternative electronic controlled field. I only may assume that way must be easier to control gear ratio.
What I didn't say directly in the video was that the number of steel poles in the modulator is equal to the total number of magnet pole pairs. I could change the number of magnet poles with electromagnets, but then I wonder how to adjust the number of steel poles in the modulator.
21 NM! Your first video seemed well, almost like a gimmick, this one, guy you're close to if not already pushing the state of the art here?
I'm very interested in the behavior at low revs
Wild.
Lovely. Are the STL files anywhere to try it out? 👏👍