Yes, that works, but it takes so much power to operate the electromagnets that any mechanical transmission (even continously variable designs) is more efficient.

In principle that would work, but if you go that far, why not just use an electric motor that doesn't require a gear box to drive your car? Oh, wait... 😊

@@helmutwalle2105 correct me if I'm wrong but on paper, the following could work. Assigning a static motor as input. Use a audrino with electric magnets. Have the external module installed with 24 (or more) electric magnets. The audrino will simulate a gear shift powering 1/4, 1/2, 3/4 and all electric magnets. The more magnets that get switched on, the faster it would spin. It would also be able to change direction so you'd have forward and reverse. In theory it could work. Please try. I don't have a 3d printer. The housing would be larger than the current 1st Gen. If it works in practicality, then not only would Manuel give you a smoother shift, but automatics would would get you a faster than current shift. Almost like a live shift. It will also eliminate the "Manuel vs automatic" argument as you would be able to switch between the two variations.

@@helmutwalle2105 Electric cars still have a single speed gearbox/reducer. Usually around 9:1.

@@VNCTHE1 - yes, I know many still do. The technology used in production EVs is not very sophisticated. This may change in the future.

why just not use a motor at this point?

The answer would be yes but it would have to match pole pairs with flux modulators

A mag clutch would do. They have been used to drive screw superchargers. Have gear/pulley set to 100% speed then reduce clutch power to allow for slip.

Magnetically coupled motor assemblies have been done before, the issue is the load, a mechanically driven assembly will always outperform and significantly cheaper and less complicated

That's how the predecessors to servo motors worked!

Bingo.

The comments are awesome. I'm just a layperson who can usually keep up with technical discussions but everyone here are talking way over my head, and I love it.

Thanks a lot!

Hi I'd like to know more about these, would like to know large scale application of the same, I'm working on a project to implement these magnetic gear boxes for industrial conveyor systems

Could you make an LSD (limited slip differential) with this?

@@ZartaxtheWise I don't think that this would exactly be used for a LSD, that said they do have electronic LSDs that use a motor and clutch pack to control wheel slip. Loosely a motor has a similar design as this, but since this reduces torque and multiplies speed it would likely not be useful as I could imagine those applications need more torque

Hi Selek, do you know what is efficiency for transferred energy. I see no reaction on bearings in that scheme, no friction in moving parts, it means no losses of that kind, but are there any other specific losses of energy

@@horeca-tech6741 the magnets will induce Eddy currents in the metal components and heat that metals up which mean from magnetic energy loses into thermal energy (heat).

This comment needs to be at the top. Magnetic gear boxes are a joke for the application shown.

@@byugrad1024 exactly even the cheapest nylon gears and gearboxes can handle more torque and cost pennies to make

only thing "amazing" about it is how amazingly naive the commenters are... completely useless for any application where output has variable load (99% of applications), let alone replace an automotive transmission...

Yes, that's how traditional speedometers work, and most people probably don't realize that. Good job figuring it out from just looking at the parts.

From what I've heard, the 'slip' you talk of is caused by the same effect that causes a magnet to fall slowly when dropped through something like a copper or aluminium tube. Even though the metal of the tube isn't magnetic itself, the magnet induces a current within the metal which causes a magnetic field opposing the magnet.

@@Stonemonkie1 What you're describing in the tube is the formation of eddy currents which creation their own magnetic field and resist the movement of the orginal magnet, this cause it to slow down. Slip for magnetic fields and rotors is the need of a difference in speed between the magnetic field and the rotor. Without a relative difference in speed, no current is produced in the rotor to make a magnetic field to be pushed on by the original magnetic field. Without this there's no motion for the rotor.

@@chrisstubbs6391 the rotor isn't turning with the magnet, there's a spring holding it.

@@Stonemonkie1 If the rotor isn't spinning its by definition not the rotor

the modulator cores i guess because of rapid changing magnetic fields like in power transformers, but much more because of higher frequency

"being able to slip without damage can often be a desirable feature" EXACTLY !! I RECKON THAT'S THE BEST BIT OF THE IDEA

Leads to more slip under load

Avoiding large amounts of damage and not having to take the gas turbine down to replace the shear pins sounds like a great idea to me

They don't get 100k flips a second, but 1.6k, rpm is rounds per minute.

Yep, and heating up magnets tends to demagnetize them. So, there is some wear and tear.

@@user-pd2rp7rf9v Doesn't matter - I'm assuming no touching between the parts.

@@user-pd2rp7rf9v you wouldn't use gear oil, too thick and would loose power to that. could use some really thin oil as a coolant probably though

as long as they are below currie temp they will last a long time

​@odysseus9672 Main heat dissipation happens I the passive flux modulator, which will not cause permanent damage. Also curie temp for modern materials is above 300 C° so plastic melts first.

You know the reason why.

@@ettorebugatti6846 Is that a question?

@@adisharr nooo, it was because homeopathic gears ar not used for transmiting force.

@@ettorebugatti6846 Homeopathic gears?

@@adisharr Doesn't show up on google.

You could treat them like journals and lubricate them accordingly if you design high-tolerance parts. It would be a gearbox with a much lower lubrication requirement than a standard gearbox, and with a built-in failsafe torque as well

Purely due to limitations of having to use a 3d printer and screws. If it were made with any kind of precision it would be more efficient than any mechanical gearbox, and slip wouldn't result in catastrophic failure, just efficiency losses, which, if anything could be a great diagnostic tool if something goes out of spec. It can accept 2 inputs as well, though the utility of that is a bit more questionable, I'd argue. Though in applications where timing is critical, I don't think these would be great.

I was covering my face with PEI sheet but I guess it doesn't show in the video lol

The company was Magnomatics, and that's the name of their KZfaq channel with those animations

@@brianb-p6586 Yea, I couldn't remember how their name was spelled, & all I could remember were those animations. I thought it was a pretty cool concept, back then. =^/.^=

Well I think magnetic bearing is already exist but it still use common bearing, it's called electric motor 😬✌️

just to correct you Delrin or acetal, same thing.

Yes, in fact the slipping is what people seem to like about these. While with standard gears you will simply have the teeth break off or other weaker parts damaged if parameters are exceeded, here you can adjust the magnets so that they slip at a specific force where nothing gets damaged yet. Very convenient.

oh mind blown ... 🤣

Seems the torque capacity would be determined by the strength of the magnets, past that point it would be like sheering the teeth off of a gear. The issue with this at scale, in a full sized truck I think the magnets would be strong enough to fry your laptop's hard drive, though an SSD would be fine of course.

Also maybe a Halbach array for the pole groups instead of double magnets to make for stronger fields for more torque.

I've designed and messed around with magnetic gears and what I've found as their biggest issue was the requirement for magnetic coupling strength to match tourqe output. Earnestly however with the newer magnetic materials this is not much of an disadvantage over gear teeth, expect in the tremendous additional costs!

@@humanistwriting5477 everything is about cost blows ass but yea

@@3CODKing the metrics of costs increasingly defy logic, in a solar system that is soon to be mined with more minerals then everyone could use a thousand times over, and more energy from the sun then we could use a billion times over! But, till the time comes, it is what it is.

Me too, it would be totally incredible to use this setup and it can handle high torques...just imagine what you can do with that in real life!!

About 99% less max torque than the equivalent mechanical gearbox I’d guess.

Yes, they are, although I don't know much about them. We had a job come to our welding shop to build a small platform for a pump system. It will have a 40HP motor and a pump with an integrated magnetic gearbox. It has to be built pretty rugged and with tight tolerances. The motor turns at 3600 RPM, whereas the pump spins at nearly 10,000 RPM. In this case, the motor weighs 600 lbs. where the pump is 55 lbs. Sundyne is the company supplying the pump and motor.

Yes, they're a poor design. Simple rectangular bars would be much better, trapezoidal (keystone) section bars would be better, and a stack of laminations would presumably be much better.

LOL what

@@chaitanyasindagi1237 Yep, that. Interwoven magnetic sheets of "bidimensional" magnetic "sheets" interleaved at resonant frequencies in crossing paths at 180 and 90 degrees. Thing is, how to create such a contained magnetic field, basically single lines of force perfectly aligned to a single plane.

have you made any progress, is like to discuss this project with you

I was thinking alternator to the but I imagine adding a transmission with free moving magnetic energy would lead you to free energy right?

@@jasonneu7519 No, that would be if you used the output for energy production. I've done some brainstorming on this and what I have is a lot like what Retsetman has made here, but with more complicated by having electromagnets involved. The main difference being that the outside rotor would have wires leading to each magnet. Each magnet would be replaced with an electro magnet. If your input gear had 10 "teeth" and your output gear had 100 "teeth" you have a 1:10 and a mechanical advantage of 10. Now take those 100 magnets and set them up so instead of being + - + - + - turn on a switch that reverses polarity of certain electro magnets so you output gear was - - + + - - ++ your now have an output gear with only 50 "teeth". This would give you a gear ration of 1:5 and a mechanical advantage of 5. You will be getting less torque but more speed. This is exactly what you want in vehicles. More gear ratios means you can have a higher torque outputs. This is why tractor trailers are sometimes 18 speed transmissions, while cars are typically a 5-6 speed transmission. Same thing applies to high end cars; the corvette used a 4 speed transmission. This mean it could quickly take off and hit high speeds, but wasn't strong. So in order to reduce weight of the car, they used fiberglass for the body, and not steel. Fun fact, that's why you don't see corvettes that have been in accidents, you crash, its totalled. If a vehicle were able to have a magnetic gearbox, it would be able to have any number of gear ratios. Since it has any number of gear ratios, it would be able to use computers to calculate the best ratio. If done correctly, this would make it so the transfer from one ratio to the next may not even be detectable as it cycles through 100 rations in under a minute.

What makes you think that? The strongest permanent magnet are made using neodymium, which is a common element that require refinement prior to use. If you're talking about naturally occurring magnetic material like lodestones, they might be becoming more rare, but who cares, They aren't what's uses in the production of magnets used for motors and linkages and such All commercially applicable magnets are manufactured as an amalgam of various metals that then goes through a sintering and machining process.