The idea of a hand cranked backpacking/camping stove is very intriguing

Look into Halbach Arrays. By placing magnets in-between the alternating magnets you can move most of the magnetic flux lines to one side of the disk increasing the magnetic field on one side and weakening it on the other side. This will increase the flux density passing through the pan. I would also consider placing the magnets under the rim of the pan so that more metal passes through the flux lines instead of the far smaller amount passing through the base. Try imagining how the flux lines look, or you can use magnetic films to see how the fields are shaped. Then arrange all the pertinent parts accordingly. Remember, metal has a high thermal conductivity which means thermal energy will quickly equalize throughout the pan.

I wonder if one could pedal a stationary bike fast enough to cook their Breakfast? Lol

@binaryglitch64

2 жыл бұрын

Yes, though not like this... by charging a battery threw a charge controller powered by a dynamo turned by a stationary bike. Potatoes take too much power for too long so skip the hash browns or cycle you butt off or days and days charging up like 3 deep cycle marine cell batteries... personally I gave up, as I was happy with sausage and eggs.

@cavelvlan25

Жыл бұрын

Heavy Flywheel best bearings money can buy maybe geared for higher rpm and no drag clutched drive mechanism so when ur not pedaling the petals disengage. The Heavy Flywheel would have the biggest effect on my food actually getting done 🤣🤣

@jaminthevanuk296

Жыл бұрын

Great idea

This is awesome! it would be great to see the same thing in a halbach array.

If you can add a sheet of metal under the magnets to connect their bottom poles, the field will be much, much stronger. 5-6mm mild steel at a minimum should do it. Thicker is better.

While watching this, I kept thinking: "How many engineers does it take to cook an egg?" lol

This is awesome...!! Love this channel

Cool experiment!

you guys are awesome :)

Loved the video 👍👍 You guys need some more time on the flywheel balancing tho ... Im wondering is there a point at wich increasing rpm,s doesnt provide any further advancements in current delivered ?

Were you using ludicrous speed ? Better be carful you don't hit plaid speed.

Id like to know more about the heating watts btus etc. How long does it take to heat water etc. How big are the magnets and what types pls. I loved the video.

Could you try the double magnets on their side, Interested to see if the extra flux points help.

+1 for Spaceballs reference :D

Some of the turbine jet cars use a similar concept for braking. Magnets mounted on the car that can be servo moved close/far from the wheel that has a copper brake disk.

what the speed / rpm of the motor ? great video thanks

It's a Great invention video. But I wanna know that how much rotation per minutes at least is needed for disc for that edy current? Sir

Lol, the speed controls for the treadmill.

@Addadalaide

5 жыл бұрын

I have those on my fabrication grinder's motor control. The last speed setting after plaid is "F*ck you"

Brilliant )

Try a shaft version, make a long rotation shaft and place magnets around it, maybe connect a motor to it by belt or gears, then wrap copper pipe all around the shaft, i seen a guy do this just with a large diameter pipe, only issues might be heat and magnets

Can we use ferrous pan

This is awesome! Do magnets also heat up? Thanks

@KJMagnetics

4 жыл бұрын

Only slightly!

impressive but i do have a question. The eddy currets originated a force on the pan, that's why u needed to use a glove to hold it in place. Well, how does a comercial intuction cooktop prevents that?

The motor on a lot of treadmills is about 1 hp ~ 745 watts. Did you put a watt meter on the motor and see how much power it drew as compared to resistance heating with the same power?

@KJMagnetics

4 жыл бұрын

We didn't do that, but it would be interesting! There was definitely a lot of resistance holding the pan in place. It was very noticeable.

Expensive way to cook an egg. Cool

@horus2779

4 жыл бұрын

So saving massive amounts of electricity is expensive hey

“This is bullshit, pan down - I want BUSH”

The question running through my head is whether this arrangement is optimal. What if the magnets were alternating in polaraity with the poles pointing same-poles at each other? Besides being much more difficult to make and put together, I wonder if more wicked field changes could translate to a hotter pan when spun. ... might be less, I really don't know.

Dude, great video. I am just wondering if this could be turned into a hot water heater?

@cavelvlan25

Жыл бұрын

Yes. Although they have to rotate very quickly. I'm curious to know if the power consumption used in spinning the magnets would worth the hassle. I can see thus being a alternative method of a boiler system. Maybe wind power geared to rotate at the proper rpm

Hi interesting stuff, I'm aware that aluminium has an effect on magnets to slow down the travel, could this be affecting things??, Thom in Scotland.

how much energy would it be used cook ? since we have products like induction stove

Amazing mw

Halbach array would have been better utilization of the magnets. Also, the magnets could have been moved to a larger radius for higher velocity.

What were the rpms??? Can you use a bike setup to do some cooking??? On second thought, you would need to switch the spin 90°, too much gearing...

Try the base of the pan like a magnetron slots matches on the magnets

Nerd level 9000 I approve

have you tried with cans? gj btw

Doesn't induction cooking require pots or pans that are magnetic? The first one you tried wasn't magnetic. I'm not sure the second one was either. There will be a transfer of heat with a pot/pan that isn't magnetic but it won't really cook very well -- sort of like what we saw here. Curious to know if the second pan was magnetic or not. Cool vid!

@KJMagnetics

Жыл бұрын

If the pan were magnetic, we wouldn't be able to hold it in place! It would be attracted to the magnets. You need a pan with a nice aluminum/copper base, these are good conductors, which induce the eddy currents. The first pan was aluminum, but was very thin. The second pan was thicker aluminum, which worked better.

@amyjohoppins1087

Жыл бұрын

​@@KJMagnetics did you have to hold the pan with two hands? curious

Which can save energy magnet or induction heater?

Very cool...er...HOT!! One more interesting way to cook an egg, right up there with using a high power blender in high for long enough (heating through mechanical agitation) 🦊

Sorry guys but you will not reach significantly high temps with aluminium or copper due to their conductivity. That's why induction manufacturers advise not to use them. You need to use iron based pans for best results as eddy currents are best absorbed and dissipate heat..

@stephenstyer8544

5 жыл бұрын

Lol copper is more coductive than iron by the way

@ppal64

3 жыл бұрын

Depends on the frequency. See shop.panasonic.com/support-only/KY-MK3500.html

Shouldn't a cast iron skillet heat up faster and much hotter than the Aluminum pan due to the higher magnetic attraction of iron?

@KJMagnetics

4 жыл бұрын

Nope, it's the induction of eddy currents that heats up the pan. The better the conductor, the more eddy currents.

Hey the first thing that noticed is when the aluminum pan would get HOT but that plexiglass didn't warped or melt from the heat of the aluminum pan. Or is that that over glass? Aluminum pan, on. And I noticed there is a lot of editing??? On an induction stove the pan needs to be metallic where a magnet would stick to it for the induction to work.

any one got the name of the first song that plays? please and thank you would you kindly tell me it?

Roughly how many rpm are needed pls ? Thank you.

Could you guestimate the speed of the rotor? Thanks!

@KJMagnetics

5 жыл бұрын

At its fastest, it was spinning around 1600 RPM

Weird did you hear the motor decelerate once you removed the pan ??

Question. How many watts did the engine use to rotate the magnets?

@sabujpattanayek8799

5 жыл бұрын

possible to get a human to run to spin the magnets fast enough to cook anything?

@amyjohoppins1087

Жыл бұрын

@@sabujpattanayek8799 doing so would decrease the current state of the diversity of human widths

What's the magnets and the pan this be useful

What if you replaced those magnets with neodymium magnets? How much amount of heat will be produced? Just curious.

@KJMagnetics

3 жыл бұрын

Those are neodymium magnets!

Eddie Carlson's 1959 conception of a spinning building, introduced at the 1962 World's Fair, the Seattle Space Needle, turns via a simple sewing machine engine using myriad wheels and cogs [track & wheel]. It would seem that with a bit more thought, one so equipped could also conceive a model of today's K&J Magnetics demonstration which uses significantly less... is the word power/watts/volts/idk..source efforts to power..

That seems much more efficient than anything else you can cook with a couple watts vs thousands you could probably boil water by pedaling

@amyjohoppins1087

Жыл бұрын

the peddle idea is interesting

I am Italian, high gas prices and the need of pasta brought me here

@amyjohoppins1087

Жыл бұрын

LOL rocket stove made of old/used cans or a hillbilly fire hole in the ground fed by twigs/paper is cheap

will the magnets loose thier gauss at some point

A couple of thoughts here. Rather than increasing the strength of magnets wouldn't you have done just as good or better if you had just put them closer together (adding more if needed)? It is the up and down of the field that creates the current, so a quicker flip from N to S would have done the trick, right? Second question... I wonder if this used significantly less electricity than a typical stove top? It would seem that rotating the magnets should use less electricity, but I don't know about how much resistance the motor had due to the proximity of the aluminum.

@KJMagnetics

5 жыл бұрын

Good question! The alternating polarities is what induces the eddy currents, but a stronger magnetic field will create stronger currents. We are still in the process of figuring out how much energy we used to cook the egg...what the video doesn't show is that it actually took around 10 mins to cook the egg, once the pan reached temperature, which took another 5 mins or so. So my guess is that it wasn't really energy efficient. The induction stoves that you can buy for your kitchen are supposed to be much more energy efficient though.

@josephcoon5809

2 жыл бұрын

@@KJMagnetics Look into Halbach Arrays. By placing magnets in-between the alternating magnets you can move most of the magnetic flux lines to one side of the disk increasing the magnetic field on one side and weakening it on the other side. This will increase the flux density passing through the pan. I would also consider placing the magnets under the rim of the pan so that more metal passes through the flux lines instead of the far smaller amount passing through the base. Try imagining how the flux lines look, or you can use magnetic films to see how the fields are shaped. Then arrange all the pertinent parts accordingly. Remember, metal has a high thermal conductivity which means thermal energy will quickly equalize throughout the pan.

@amyjohoppins1087

Жыл бұрын

@@josephcoon5809 you try

I tried to reproduce the experiment. I used a 775 dc motor and 40*40*10 N52 magnets same 8 magnets. But I found my motor is not powerful enough. The aluminium pan damps the motor too much. I can only achieve electro braking not baking.

@amyjohoppins1087

Жыл бұрын

I don't know much - just learning here but, wouldn't cast iron being a ferrous metal produce the better effect?

OMG, please add OIL to that pan!

@gus473

4 жыл бұрын

Butter or ghee....! 😋😎👍

@abdullahhasan1769

4 жыл бұрын

if i fry egg this way, my wife is gonna kill me

Use glass instead of plexiglass and aluminium plate instead of wood, also remember that a commercially engineered one would be a 1000 times better .. It said that with a much higher rpm 3000 i think, you dont even need metal, at that frequency water will boil with rotating magnets..

@amyjohoppins1087

Жыл бұрын

interesting - show us

Would you like to share this egg with me. Ha ha ha... amazing Lahore, Pakistan.

Why use aluminium? Is there a reason to not use a material with lower skin depth (steel, iron, etc.) which is what is normally used with induction cookers? _EDIT:_ I watched the rest of the video and it's pretty evident that the second pan is _not_ aluminium - why else would you need to hold it in place? That's why it heats up so quickly (and to higher temperatures too).

@amyjohoppins1087

Жыл бұрын

the double fisted hold has my curiouslity

this is how the ancients would cook

@horus2779

4 жыл бұрын

Yep the Egyptians had advanced induction cooking and heating

@soupflood

3 жыл бұрын

@@horus2779 imagine the slaves spinning a giant wooden wheel which is connected to a gearbox... Which spins a disc on the master's table

You need a UNIVERSAL MOTOR. Methinks some are capable beyond 5000rpm, with speed control. Propane stove spider for the Skillet.

What is earth magnetic force?

Is it ised for lager scale heating

@kantharaju3844

4 жыл бұрын

Is it used for large scale heating

I didn’t think induction cooking worked with ALUMINUM cookware. I thought it had to be reactive to magnets, which aluminum is not…correct?

@SolarizeYourLife

2 жыл бұрын

Different use of magnets, caused the heating...

@amyjohoppins1087

Жыл бұрын

my thoughts as well - but?

@dabooge

7 ай бұрын

Eddy currents are used in metal recycling to sort aluminum.

Ferris iron pot?

Treadmill motor speeds are amusing 0:40

Using this online tone generator, I guess the sound made by the device is about 160Hz (160 cycles per second, or 9600 RMP). www.szynalski.com/tone-generator/ Using this bike gear ratio calculator, I worked out that if the axle of this device had a 100mm circumference 'wheel' on it to interface with a bike tyre on a bike wheel of 630mm, every bike wheel rotation would = 6.3 rotations of the axle. To get 160 axle rotations per second, the wheel would have to rotate 25.4 times per second (16,000mm p/s = 57.6 km/h). With a peddling a 10 toothed cog driving a 75 toothed gear on the wheel - peddling at 60 cycles per minute (one per second), the wheel speed would be 58km/h. www.bikecalc.com/gear_speed/ It's doable manually (peddle) with standard bike gear - and even more easily with changes to gearing.

@GirizdL

3 жыл бұрын

So we need more and stronger magnets,am I right?

Next test, set up a stationary bike and see if you can cook an egg with human power and magnets. What was the RPMs of the disk?

@KJMagnetics

5 жыл бұрын

This was actually discussed as a possibility...but couldn't get any takers who wanted to exercise that much!! We were spinning the disc at around 1600 RPM

@candidmoe8741

5 жыл бұрын

Watch this sprint bicycle champion trying to toast bread on human power alone: kzread.info/dash/bejne/hWiDl9iof6bXcbQ.html

@evapho2745

Жыл бұрын

Maybe the use of an old foot treadle sewing machine. Up the size of its fly wheel for more power then gear it down to spin the magnets faster maybe

Why dont u use all south pole all or north pole at all..? Its more efective...

@KJMagnetics

5 жыл бұрын

You need a changing magnetic field...using all one pole would not create a changing magnetic field.

Modify by adding copper plate

Magnet power consumption vs induction heater

太陽の黒点か！

looks like lexan to me and not acrylic.

Next step- using air pressured motor.

If you place a bifilar pancake coil instead of pan, the coil will generate more watts than needed to rotate motor; you will achieve overunity.

@Yp-ku4sy

4 жыл бұрын

No. You absolutely will not achieve over-unity. Over-unity is impossible in energy conversion. Try it yourself if you do not believe.

Its is actually high in EMF, in short not good to your health

どうなってる？のだ

So…what if you scale this up to planetary scale and use the Sun’s magnetic field on the Earth’s iron core/magnetic field? I’ve tried a couple times to find any data on thermal effects on the Earth caused by the Sun’s magnetic field and solar prominences. The data is sorely lacking for some reason…

@computermaster360

2 жыл бұрын

The Earth rotates around its axis once every 24 hours, the Sun's magnetic field flips once every 11 years. Both are such low frequencies that they have absolutely no effect on Earth's 5000+°C core.

@josephcoon5809

2 жыл бұрын

@@computermaster360 😂 “Absolutely no effect…” I don’t see “climate scientists” using such short time scales to describe the impending doom that is about to befall us.

@josephcoon5809

2 жыл бұрын

@@computermaster360 I love how you think that the Earth’s and Sun’s magnetic field are so simply explained in a couple sentences like they are simple bar magnets. Keep trying, though.

Very cool. Pretty HOT too.

very big mistake. you musnt turn magnets very fast it can break the adhesive and can hit you as a bullet. why you dont use a hf ac induction coil with zvs.

@Traderhood

4 жыл бұрын

Jeny Thorium what adhesive? Magnets were screwed down.

Drilled magnets, really?

u kitchen plate in the kitchen works exactly the same nothing new

With crazies trying to kill gas stoves this may become our only option. :-( .... until they try to ban magnets too just to be even more cruel.

Go Vegan. #GrillMoreFruit. . A Scientific Vegan

@richardsloan7555

4 жыл бұрын

Don't eat fake meat!

What's the point in using magnets for heating if you still are using electricity to power the motor turning your magnets. Totally pointless experiment.

Dumb. Boring. Waste of time...