2034 A Simple Adaptable Axial Flux Generator

[@justtinkering6713]

The steel backing disk on the magnets makes the flux field shift inwards on one side and shift outwards on the coil side. This allows more penetration of the flux into the coils and does increase the output. I've proven it many times in my axial flux alternators.

[@veganismyname]

Perhaps but also consider the extra energy needed to spin the steel. Adding graphite to the plastic filament might accomplish that. Weight, magnetic permeability, and magnetic force are all at play. Filament direction would affect magnetic permeability.

[@justtinkering6713]

@@veganismyname unconsequential. You only need steel behind the magnets. Just a ring, not a whole disk.

[@Milkybar3320011]

Do you have a video of before and after that you could share please?

[@justtinkering6713]

​ No but you can model it using an online tool called FEMM

[@paddy2661]

Read couple of months back , carbon fiber shields EMF , it reflects it . May help.

[@davidblyth5495]

I'm a firm believer in modular design, so I admire this foresight in your work!

[@ThePhiliposophy]

Me too. Some call it the Unix philosophy. But I am sure the concept has been around for millenia.

[@bermudatriangle2036]

until you print it and see the parts dont fit.

[@deskmat9874]

@@bermudatriangle2036 If you really cared then you would print all of your components 1mm larger than the intended size and if that happens to be too big then you can simply sand it down to the perfect size. Use your brain

[@ffaubert1]

Brilliant video Robert as always. Thank you for helping me get my 'Why and what if' mindset back from years of having it beat out of me by employers.

[@shawncalderon4950]

This channel always gets better. You are a creative genius!

[@JFK666666]

Brilliant! I've learned more the last few weeks from your videos, than I did in physics-classes in entire highschool when it comes to electricity :)

[@inrit]

I'm astounded by the rate at which you invent and create new objects. You set a high bar! I feel like on most channels the past few weeks of wind generator content would have been spread over a year. You just keep designing and printing all these fascinating mechanical elements!

[@AndreaDingbatt]

Thank you very much Robert ,You are Inspiring so many of us!! We appreciate your dedication, enthusiasm and your awesome videos!! (And your "Evil Genius" Laugh!!) I'm very Grateful for the Information and Knowledge you give freely to Everyone Here!! Best Wishes and Kindest Regards, Andréa and Critters. ..XxX... Carlisle, UK.

[@shannonwright7857]

Awesome Build, love the designs and the access to your plans. Thank you for everything you do. Wishing you well.

[@OFerrell21]

Robert, you have convinced me into getting the printer! I’m in the process of building a small farm barn and with these projects is how im getting the little power that i would need out there. Just need to discover the ins and outs of storing the power to come full circle.

[@manwithnoname3454]

I could use that hand crank to add extra charge into my solar system on cloudy days. Sweet. You Rock Robert

[@EvanVlcek]

For the center section with the serpentine coil wiring, if you printed (or drilled) holes parallel with the axel between the wiring where your printed "wire guides" are and inserted iron rods, the magnetic field between the coils should increase and give you better output.

[@hypermindclips]

Can you u explain a little bit better? These "iron rods" you say they need to go through the entire assembly or just the center part that stays stationary (doesnt spin together with the magnets carriers)? Whats the benefit of doing that?

[@EvanVlcek]

Just through the stator (that doesn't move), perpendicular to the copper windings. Magnetic fields form circuits. Like electric circuits, they follow the path of least resistance. Magnets form magnetic field loops. The stronger the magnet, the bigger the loops. Iron offers a lower resistance to direct the field paths and keep the field strength higher where you want it - between the copper windings.

[@racketman2u]

you would also introduce "cogging" i.e. resistance to rotation, as the magnets would want to lock onto the rods, which is the opposite to the intention of an axial flux generator.

[@Andrew-yz6ky]

I'm happy I came across your channel! Love your work, I'm putting all this together this week I hope and noticed you have 15mm X 10mm magnets. You almost had me buying some! Thank you so much for making this kind of thing readily available to people who don't know how magnets work.

[@kevintipcorn6787]

@@Andrew-yz6ky Just opened the files in cura and those magnet holes are 15mm by 10mm, or 1.5cm by 1 cm deep.

[@Andrew-yz6ky]

@@kevintipcorn6787 Ah I see now. In the video he said 15cm by 1cm and I went by that assuming thingiverse was mistaken! Thank you for looking, i should have thought of just checking the diameter myself!

[@tobylockyer9078]

Great work as always and your timing is scarily impeccable. I woke up this morning wanting to understand axial flux and you did a video 15hrs earlier!!

[@originsdecoded3508]

Robert I was thinking about your last wind turbine generator and I think there a way to increase power output by increasing the wind velocity artificially. what if you funnel the air and push up the air with heat convention like gas stove or wood fire, and as the wind goes up a tapered funnel shape tube it compresses and picks up speed. The wind generator fans can then be placed on the top at the correct angles to get blasted by the jet winds that will come out from the compressed wind. An omni directional wind collector that is heated by fire which then escapes through a narrowing tube which increases wind velocity by as much as 80-100% depending on the efficiency of the design.

[@a4awe]

And the heater could be powered by the initial and also part of the following wind powering the entire setup, if that makes sense!

[@davidellis1355]

Oh you absolute diabolical genius, I was thinking about something similar last night. You beat me to it 😂

[@alejomorand1255]

it's the first video of yours that i see, and i just loved your voice and how straight forward your explanation was. Great content

[@vargaferenc6975]

This generator is really simple. However the magnet discs are axially held in place by the outer ring of ball bearings. If a magnetic disc gets loose and slips of the bearing, then whole assy fall apart. I suppose that the bearings need to be glued to the magnetic discs, to get stable operation.

[@Milkybar3320011]

At some point I will get a 3D printer, but thank you for uploading all your designs to thingyverse which I can then print at my leisure

[@ShafaqIftikhar-pw9ld]

Great video, great design, great inspiration. Thank you for the upload Robert!!!!!

[@aaronlittlefield7407]

I am an American School Teacher and I am in love with your channel. There are too many videos for me to parse through everything, and I am still learning, but I wanted to consolidate most of my questions on what I believe to be the most relevant video. I'm curious about a few design considerations and the impact that these variables have on power generation. Presume that price is not a significant issue and the application would be for banking microhydro or small factor wind energy for offgrid application: 1) Would using stronger magnets increase the voltage? 2) Would using different sized wire be beneficial? 3) Is fewer larger magnets better or more numerous smaller magnets more beneficial? 4) Is the usage of a Serpentine Coil due to the ease of use and/or cost? 5) Is the current generated considered AC or DC given that there is only a single coil? Or does this just mean it is single phase? 6) Would your above setup be appropriate for charging a battery bank for off grid application if the storage was a distance away from the stator?

[@af0ulwind115]

suggestion... large ring magnet, polarity oriented same as axis. three meter wire. grounding rod closet shelf hanger... stand off for a wall. hang the stand off on an exterior wall ten feet up. hang the three meter wire from the stand off so it hangs a way from the wall and is not grounded through/to, the building. attach ring magnet to a steel plate on a steel axle run the axle through a couple insulated bearings that are mounted above ground. Isolate the magnet axle and bearing from ground sink grounding rod into the ground away from building attach small wire to grounding rod and the other end touches the end of the axle touch the end of the three meter wire to the circumference of the ring magnet... If i am correct this should cause the ring magnet to spin... perhaps only when the ground is intermittently switch on and off...? if works scale it up and go for the height of your tallest building... strength of the magnetic force that rotates the ring magnet is proportionate to the voltage times the electron movement in the magnetic beltways of magnet taller building more voltage

[@josephsmith601]

I should have been subscribed to your channel, but this right here was absolutely amazing, everything was extremely easy to understand and I love modularity!!! 💯💯💯👍👍👍

[@Red9GearHeads]

Rob you really need some lab glass in the background with bubbling green liquid and maybe a Jacob’s ladder. It’s aliiiive!!!

[@st33ldi9ital]

I think you're going to have very good results with this one!

[@matthewgreen1152]

@Robert Murray-Smith, hello sir! Always a pleasure to watch you advance the old the new and the ideas from study to practice, you convert/transform various concepts of energy with the record of time well spent over the years with a solid consistency throughout. I believe last i commented some months ago I spoke of knowledge that I agree sounds sci-fi even if it can be explained well. Tip: the magnets are scores more useful by strength and efficiency opening new designs. Use multiple sizes of magnets to make pyramids to use instead of button shaped. 3/4

[@mikedodger7898]

Great idea Rob!!! How does this compare to your larger generator you made for the wind turbine? Ie. Weight to watts ratio? Is one design more effective based on weight or size?

[@the_tom]

Wow. Impressive. I'm putting all things together in my had and I'm going to make my wind power generator.

[@mr.notorious2465]

@Robert Murray-Smith I'd be curious to see what performance a device that takes advantage of the stacked blade design but in a way that uses 2 sets of the stacked blades on their own bearings with the rear blade stack having its blades oppose the stack in front of it. Having both the serpentine coil disc and magnet disk spinning in opposition to increase the rate of generation? -From the mouth of a noob

[@stevestogsdill5791]

Would there be an advantage to having magnets at different radius? Like two or more rows of magnets at two different radii and choosing one radius or the other depending on the torque/leverage you want?

[@leostarling5746]

You understood the principle of guiding the flux in the context of flux switching motors, so why do you still have a problem with the metal ring idea? By reducing the flux resistance on the non-working side, you strengthen the field through your coils.

[@waltersaunders7699]

Thanks Robert, for giving meaning to the terms axial and radial and why it's so. Your work is fantastic, because it is so understandable and accessible to us general punters. Thanks again mate

[@Rebar77_real]

So many applications... Was thinking how a dog running on a treadmill wouldn't be free because you would have to feed the dog but people pay to burn their dogs energy by hiring walkers. Idea, mobile dog walking service where the dogs recharge the electric bus they are being picked up in. Have them run on treadmills instead of just sitting there hyper. :D Not a trudge bus though, open windows, some run/some chill, still go to the park and things, lol.

[@AndreaDingbatt]

Brilliant idea,,,🤔🙂 Although I suspect that a few of the Dogs,,, like my own, Jasper,,, (who is far too clever for his own good,,, ) Would Expect Payment for the Work!! Hamsters would be far more willing,,,, but the equipment would have to be resized,,,Lol!! My Gerbils used to drive the family crackers due to the annoying squeaky wheel,,,all night!! Despite being out nearly all day and plenty of exercise and space!!🙂 You have got me thinking now,,,, 😉❤

[@colleenforrest7936]

Watching this again... For the counter rotation, could you put a set of slightly larger blades on the other side made to rotate in the opposite direction? I've seen this done in yard spinner art.

[@mr.notorious2465]

I had the same idea. Allowing for both serpentine coil and magnet coil to spin in opposition, which I would imagine would nearly double the efficiency.

[@dav1dbone]

Might be worth doing a video on how to design rotors and stators for folk who have different size magnets, I know there must be a quick way in Tinkercad to rotate x degrees and copy paste? Or even when you offer the STLs to have a blank disk to add your own magnet dimensions.

[@DrKillPayShunt]

if you have the disc with the magnet holes, you can easily fill those holes in tinkercad in 1-2 steps. Hit save....done and dusted.

[@mikedodger7898]

Another question: the sound of the gears meshing suggests the 3d print may not be durable. Have you considered transitioning from planetary gears to magnetic gears to extend the life of the device?

[@David_Mash]

If we drop a magnet thru a copper pipe, we get resistance, without any rotation. What would be required to generate electricity via magnets without rotation/coils.

[@mikebond6328]

Linear generator.

[@grantdeisig1360]

So make a copper pipe race track and put a magnet in there, and use compressed air to accelerate it around? You have to have an exit for the air to escape right at where the air comes in at. And then of course have to air leave at the opposite angle to which it enters. The air should also keep things cool. Would be a fun experiment.

[@David_Mash]

@@mikebond6328 they use coils

[@sailaway8244]

​@@grantdeisig1360could do the same thing with water maybe...... connect straight to a tap with the outlet tee'd to the side the inlet a Y🤔

[@timsmith1426]

My only complaint is that you stopped to soon! :P Thanks for the great video, we need to see that thing being spun by the propellers! :) Thanks again for all you do! :)

[@marcfruchtman9473]

60v is more than the usual from your hand crank gens... this design seems to be doing well.

[@sailaway8244]

Maybe adding the diameter of the serpentine coil (pre formed) to enable a calculation of total coil length (0.2×500×???!) would be helpful,but still a great vid👍

[@TommyApel]

On the note about generation, you've been banging on about rotational speed, did you ever think about putting a ring around the tip of the blades and use the tip speed for your generation ?

[@victoryfirst2878]

This is just amazing Robert. Shame I live in a relatively quite wind area. I would most certainly have wind turbine in my location. What gets me is why this most obvious usage of materials is not being made in the marketplace?? Good day and Peace too. vf

[@colrodrick8784]

I did enjoy it. Blimey! Did you say 60volts? I might be imagining things because I’m under a set of blinds doing some repairs while listening, but I’ll swear you said you cranked up 60volts. Amazing mate.

[@m8jjay815]

sir you are amazing work,

[@simonexperiences]

great!😃 how to calculate the sizing of a serpentine coil (diameter of the wire, length...) in relation to the power of the magnets (gauss, tesla)? and compared to the torque available in Nm (wind or water)? Unfortunately, there is very little relevant data on pico-turbine designs...

[@andyelgrand0]

Question: The configuration here seemed to have 18 magnets but only 9 coil serpentine loops... would it more, or less efficient to make those 18 copper serpentine loops?

[@KavanOBrien]

Are you going to fix it to a battery to be able to generate heat from the wind mill ?

[@kilokilos]

Hi Rob, awesome generator. How much amps can you get on the .2 mm wire?

[@eddiehoskin42]

Doing some digging, 0.2mm wire is rated for just over 0.5A. Might be more or less depending on the specific insulation rating of the wire, but theres a starting point for you

[@historyisfake9153]

Couldn't that be used with a pedel arrangement one one way one the other so at a good torqure the power would be half on each leg? Or a gear arrangement? In thinking power over talk by splittiling it so double power but hopefully not in in input. It won't be amazing but worth a though due to magnetic gears ext and maybe multiple coils. Serpentine. Xxx

[@jboy6944]

Hi Rob, is it possible to attach one of these generators onto an e scooter and have a turbine spin which will produce power to recharge the batteries?

[@Mr.TreeFPV]

It gonna cost you 1 in energy to produce 0.8 in optimal so it is not worthed. Be sure that if it would be worthed, it would be already there (and they, of course put their price higher for that)

[@jboy6944]

I mean if it’s possible to gear up by 27:1 ratio then surely you should be able to produce a decent amount of power.

[@jboy6944]

I guess it all boils down to the speed of the wind that’s capable of turning a geared turbine as it may have an initial force it has to overcome before any work is done.

[@ADSteam1994]

Love the video sir was just wondering what that copper thing behind you is.

[@shawncalderon4950]

Why are the magnet discs smaller than the serpentine coil disc?

[@AndreaDingbatt]

Something to do with the way the electricity is generated and the way it flows through the copper wire coils,,,,I think that if you watch the video about making Serpentine Coils,,, it's explained there,,, I hope that this helps, Andrea and Critters. ...XxX....

[@mikebond6328]

The coil doesn’t generate where the wire turns. If the magnets were the same size as the coil that portion of the magnets would be wasted.

[@AndreaDingbatt]

@@mikebond6328 Thank you Mike!! You explained that way better than I was able to!!

[@shawncalderon4950]

@@mikebond6328 thank you!

[@shawncalderon4950]

@@AndreaDingbatt thanks, I found my answer after watching the video a second time. Appreciate your response!

[@jerryshelton1481]

How many amps will the axial flux output

[@peepopalaber]

Thanks Robert, i really enjoy your videos and the information with them.

[@8ank3r]

Wow! Great voltage output. Have you calculated it's wattage?

[@russellzauner]

"its" P=I*E if you have voltage and current you can get power using basic maths. I think a more useful way to look at motors from a viewpoint of torque and the few points where your RPM are limited by saturation or cancellation (friction can be mostly removed). Since we didn't have a current sensing resistor measured (usually a very small, very precisely known value), its hard to tell since the input impedance of the meter is supposed to be super high (if you want to be precise, you would use a 4-wire meter with kelvin clips), Heisenberg be damned.

[@8ank3r]

I KNOW how to calculate watts, however amperage was not given @@russellzauner

[@christopherd.winnan8701]

Serious Question - Can you rig this up to a bicycle and generate 220v?

[@TheDiegoloop]

how are you getting a reading? Where does it connect to the multimeter? Love the design!

[@TheDiegoloop]

Just saw the pictures in the generator files!

[@buensomeritano1755]

You should investigate koenigsegg's combination axial/radial configuration. Super duper power dense and more versatile over wider RPM ranges.

[@michelwouterse]

Good day Mr Robert. I was wondering if this turbine would benefit from rectangular magnets instead of circular, so more fieldlines cross the coils? Just curious..... Love your channel.... by the way.

[@wullie1320]

How fast do you think the disc with the magnets can spin before tensile strength fails? I have Petg Disc's with 4 top and bottom layers.

[@wrencharmratchet7629]

... was that thing hooked ul to the meter? I didn't see the leads.

[@cmasailor]

... so is this serpentine made on the same jig as before? What size jig do i need to make... nevermind, the serpentine video says use a bit of string and add 10% to figure it out.

[@noozo]

can you hook up a tesla coil to the generator to see the sparks fly or is the voltage not high enough in which case what would you need to change in the generator or hand crank to reach said voltages?

[@silverpc4611]

Curious on the speed. I am trying to make gravity battery with swiss lever escapement. Right now the gear ratio is about 1:450.

[@russellzauner]

At some point there has to be a record for files uploaded to Thingverse, because I think you'd have a shot at hitting it without changing a thing that you're doing already.

[@ShafaqIftikhar-pw9ld]

An award needs to be presented to ROBERT

[@R67K]

❤❤ Thanks for sharing!

[@cam2life360]

Hi sir, does the two wheels with magnets rotates at the same time or any of the wheels can rotate independently?

[@cliveharding1825]

15 x 10 cm n32 magnets? Do you mean 15 x 10 mm N52 magnets?

[@عبدالرحيمالسكراتي]

hi sur you are ❤❤❤❤❤❤ thnks for all information 🎉🎉🎉🎉

[@reypolice5231]

May I ask : What the benefits of counter-rotating magnets will do?

[@justtinkering6713]

Usually detrimental

[@ThinkingandTinkering]

i have no idea mate - but people keep suggesting it to me - so I included it

[@reypolice5231]

@@ThinkingandTinkering Thank you for your input. In my proposed design: IF The coils turned in one direction ( say clockwise) and the magnets turned in the other direction ( counter clockwise) then possible a higher output can be achieved at a lower RPM, AS both coil and magnet are turning. Result is higher output while parts spin slower. Less chance of braking apart ( maybe).

[@mayinjabob9380]

this was lovely

[@travismoore7849]

Put two off set wind turbines on it like that one video?

[@stuffoflardohfortheloveof]

Fantastic! 👍

[@earthlingthings]

Since cars have 4 spinning wheels , beats me why there aren't magnets and serpentine coils on each one, recycling the electricity to the engine.

[@MrManidos]

how much watts output? thx for the video

[@Anonymouzee]

?Amps??

[@TheZolon]

Planetary Gear to Fly Wheel to Generator ... looks like I have a winter project.

[@firepuncher1]

Perhaps I missed it but what does happen if they are setup for contra rotation?

[@justtinkering6713]

Contra rotation will need to be synchronized and I don't recommend it. Just keep it simple.

[@colleenforrest7936]

Now we need a flux capacitor to store the energy generated from the flux generator 😂

[@colleenforrest7936]

Can you stack these?

[@salilsahani2721]

Thank you :))

[@robinramkhalawan468]

I for the life of me cannot understand why this axial flux motor is not being brought to market seems like something is holding this tech back I wonder if it's intentional

[@HeistheAlphaOmega]

😮🎉

[@2010Edgars]

Is this english or scotish?

[@WilliamAndrewPhilipBodie]

No no no !!! i don't need a Flux Generator. i need a Flux capacitor. miss the old days 😀

[@ramzeneger]

Can you make one that really produce pls like, you will be my hero if you can produce of at least 100 watts per hour. Thank you.

[@Nobe_Oddy]

I NEED a 3D Printer!!! lol (and some magnets and wire lol)

[@nattsurfaren]

Do not connect the Flux Generator to a Flux Capacitor because it might just vanish back in time. You'll never get it back.

[@davidlong3696]

Use it to drive a bicycle please.

[@asollid]

you forgot to mention all north.

[@Josh-zh]

一个错误百出的初学者。 虽然你年纪很大，但是在磁学与发电方面，你还没有入门。