Great Video, and thank you for not taking us on the visuals of each test. The analytical no nonsense to the point presentation needs a Gold Olympic medal.
@raymiles6913 жыл бұрын
My father was a savvy Ben Franklin Electrician-mentioned Eddy Currant, (Deep Blue)so⚡I would follow🎓✨ Thank You for intrepid observates.
@Q_Channel14 жыл бұрын
This is a seminal work in this subject matter -- especially for engineers who are curious about basic design elements for eddy current brake systems. Fantastic content, sir.
@stuzman525 жыл бұрын
Great demonstration of experiments to show the effects of eddy current drag. Keep up the good work as I’ve never seen these kinds of experiments with this topic to look at so many different variables. 😀👍
@edgarortizdeora46764 жыл бұрын
Amazing way you show the effects of the Eddy current drag. Cheers for you man.
@maglectric36245 жыл бұрын
Thank you for an extremely well explained and useable data presentation.
@robertlavedas4964 Жыл бұрын
God your videos are like a drug, I just love them
@mountainman48523 жыл бұрын
Thank you for the well-done presentation, it helped me a lot in finalizing the design and fabrication of my version of Eddy current water heating system for our home in floor heating
@gristlevonraben5 жыл бұрын
Wow, thank you for the information, great video.
@donnysandley69775 жыл бұрын
You do a fantastic job explaining this😳🙏
@donnysandley69775 жыл бұрын
Totally love this ❤️ thank very much 👍
@knoxpruett18895 жыл бұрын
EXCELLENT !!! Thank you!
@marwansallouta21013 жыл бұрын
Great explanation, thank you.
@txkflier4 жыл бұрын
Great Scott! That was an awesome presentation. I’ve been studying eddy current dynos for testing brushless motors. Thanks!
@teslasapple5 жыл бұрын
Great info 👍
@Ton_baligi_yuzebilir4 жыл бұрын
Thanks for all informations...
@sheester215 жыл бұрын
Thanks for sharing your knowledge!
@EgadsNo5 жыл бұрын
Great video- pretty exhaustive testing. What were those 1" magnets on the 6" disc array? For anyone curious of the speed of the copper passing over the magnets here are the ranges... 5"C : 15.707" travel 6"C : 18.849" travel A= @665rpm : ( 174.08"/sec - 208.90"/sec ) ( 59.26 : *B* ) ( 37.8% : C ) B= @1122rpm: ( 293.72"/sec - 352.47"/sec ) ( 168% : A ) ( 63.93% : C ) C= @1755rpm: ( 459.42"/sec - 551.33"/sec ) (263% : A ) ( 156% : B ) That is quite a change in response by air gap @16:10 of the video. ( edit in bold )
@SuperMagnetMan5 жыл бұрын
Yes - I realized I forgot to mention that:) They are 1 inch diameter (25.4 mm) x 0.25 inches thick N40.:). Thanks for giving the angular velocity - that is quite a drop in speed:)
@magneticpropulsion25072 жыл бұрын
Do two magnet behave like a magnet and copper with respect to eddy current drag? Do they attract or repel more when one is moving ? As in for example magnetic gear arrangements or even two magnets approaching each other?
@Mr.Smith1015 жыл бұрын
I wonder why magnetic couplers aren't used more in vehicle applications?
@therealjammit5 жыл бұрын
They sort of are. The clutch on the air conditioning is magnetically operated. As far as replacing the torque convertor you'll have a problem with heat. Eddy current is still a current. That current flow will create heat. A torque convertor has a fluid (oil) pumped through it. This fluid is run through a radiator to cool it. Even then when the car comes up to speed, the torque convertor "locks" out by directly connecting the drive shaft to the gearbox and stops the need for the fluid coupling. The fluid coupling seems rather mechanical but is actually very efficient. Eddy current is just resistive losses.
@zerwell475 жыл бұрын
Nice testing. Very interesting. If you do another test series it would be interesting to note what the energy transfer efficiency is from the drill press to the copper plates. Would need to know the weight of each plate X delta T X specific heat X the time period. Since I experiment with building room heaters, that would be good info.
@andrewmorris59473 жыл бұрын
What would be the “rust” factor of a neodymium iron boron magnet be if encapsulated in clay /Adobe/cob?
@andrewmorris59473 жыл бұрын
I am bubbling with application concepts that would disrupt industries… but serve the people and society. Natural, simplex, lasting solutions.
@SuperMagnetMan3 жыл бұрын
Andrew - sorry to be late in replying but - we plate the magnets and encapsulate magnets in plastics and PTFE and epoxies to reduce oxidation. The "rust" is the oxidation of the material. Great care is taken at every step in the manufacturing process to eliminate oxygen in the material but at the atomic level there will always be something in the material. The less oxygen that is entrained in the material the longer it takes before oxidation will affect anything about the magnet. I have had a customer who did get some of our high temperature magnets and molded clay around them and baked it in an oven to sinter the clay and it worked great. Since standard neodymium magnets are only good for an operating temperature of 60-80° you would need to probably select the SH grade neo which is good for 150*C or a samarium cobalt magnet that is good to 300°C. Thanks - I hope this helps.
@andrewmorris59473 жыл бұрын
@@SuperMagnetMan have you began testing with graphene coatings on copper? Or graphene at all?
@davidprock9043 жыл бұрын
Does eddy current effect carbon rods / graphite sheets???
@trench015 жыл бұрын
Nice test but picture net to the chart would help. Since I forget what you are talking about. Also I assume when you have some inconsistencies it might be due to frequency of the metal and speed.
@SuperMagnetMan5 жыл бұрын
Thanks - Yes - The one that that was hard to control precisely was the time - 10 seconds. I would spin the drill down and hit the timer at the same time but sometimes it might hit 11 seconds before I would raise it back up. Also, as the copper would heat up above the ambient air temp I think spinning it in the cooler air was cooling down the copper a bit after i had already ready the temperature. It worked well for the most part but a few inconsistencies means it was real data:)
@petersotropa44673 жыл бұрын
What material is used to hold the magnets?
@samstewart48075 жыл бұрын
Fascinating. Can 2 discs on a common shaft be arranged so they force each other to spin in opposite directions?
@mattman86855 жыл бұрын
awesome work man! would love to add bismuth disc to it!
@SuperMagnetMan5 жыл бұрын
Bismuth would be interesting but it is a different magnetic property:) Bismuth is diamagnetic and creates an opposite polarity above the magnetic fields. Pyrolytic Graphite is much lighter and has a much stronger diamagnetic effect. I might look at seeing what pyro does - if it is interesting - Hey it will be another video!!!! Thanks for the idea.
@brandondumont72235 жыл бұрын
can you run a drag test with a north on one side and a south on the other sandwiching the copper plate and try doing and off set half over lap(like a zipper)
@fredhebert85923 жыл бұрын
Thank you for this video it was extremely helpful I have a question I built a generator with magnetic wire and n52 magnets I'm noticing the magnets are getting weak I produced a lot of current at first and now it's half the amount got any ideas n/s thanks
@banhomcustom40913 жыл бұрын
Great information. Can you tell me the dimensions of the magnets you used?
@SuperMagnetMan3 жыл бұрын
If you are talking about the larger discs - they were 1 inch diameter x 0.25 inch thick N40.
@jvon38854 жыл бұрын
I need to get me some of these copper disks.
@ketangaikwad57683 жыл бұрын
Hello sir ...i need body remove info
@hinduactivist55275 жыл бұрын
Sir..i have been trying to separate granulated electric wire lot to separate very thin granulated copper and plastic..with 1440 rpm rotation of magnets on conveyor belt..it is not showing any repulsion effect on 1mm x 4mm wire chunk moving on conveyor belt..my purpose is to separate copper from plastic..whats gone wrong..plz help me..thx.
@herbertgearing17025 жыл бұрын
Is there a reason why you would use three in a N-S-N instead of two N-S?
@bubblezovlove72133 жыл бұрын
I have huge magnets but currently no large blocks of copper. I really want to see the eddy currents effect. I have a bullion block of aluminium that surprisingly didn't work. Maybe it does but not as much as copper? Is that right? Also, I figured until I can afford a big block of copper, maybe a small bit of copper will work in a large magnetic field! No. No that doesn't work... 😆
@shockretiesthememester70605 жыл бұрын
Wuddupsupermagnetman
@steve-o64135 жыл бұрын
Visual is the best Teaching Method otherwise it doesn't hold the Minds Attention and the comparison with Aluminum might have been even more enlightening, just my opinion...
@BooBaddyBig5 жыл бұрын
Really this is closely related to induction motors. This is basically a locked rotor test in disguise. Note that adding a (thin!) iron backing plate to the copper will usually give you much bigger braking effect because it closes the flux loop (but will also give you a net attractive force unless the amount of iron is very small). Also having two rows of magnets (alternating N-S side-side) will give much bigger effect- more than twice.
@robertlavedas4964 Жыл бұрын
I know you have great computer modeling, I have a configuration that I believe does create the equivalent of a Fresnel lense, only with magnetic fields, rather than light. The benefit, is that a lot less expensive magnetic material is needed, a positive there, also it has potential I believe to create incredibly strong permanent magnetic fields. Is there any chance you and your staff would evaluate this for me? Next, I am not looking to profit from this in any way, you can have all rights, etc.... The only thing I ask, "is that it be named after me, the lavedas configuration." If possible. I started working with permanent magnets at 3 yrs of age, where I encountered "numerical alphabet refrigerator magnets, that even at 3 I knew where different, and they were, the were very cheap, and used a Holbrook array configuration, in 1968-69, being three no one could ever explain said(we didn't have no www. Then!
@tilak26044 жыл бұрын
Hi Good morning Which is the best magnet for making Generators Shape and direction Thanks
@node61615 жыл бұрын
Hey you are good
@Elie-J-Saoud5 жыл бұрын
pretty fine thinking but needs a lot a looooooooooooooooooooooooooooooooot of fine tuning and get a more powerful motor drill :)
@totlguy2 жыл бұрын
Nice job on the experiments...love the enthusiasm in your work. I have a similar question...Have you or anyone out there...studied the effects of opposing magnet arrays? N S N S N ======= non-ferromagnetic conductive disk S N S N S versus N N N N N ======= non-ferromagnetic conductive disk S S S S S N S N S N ======= non-ferromagnetic conductive disk N S N S N I've built a resistance training sled with a 1/2" thick by 12" diameter aluminum disk that will spin over 1500 rpm (through a two step gearing process) at normal walking gait and I have 1" x 1" cylindrical RE magnets. Before I start machining a device to hold the array or arrays I'd like a little nudge in the right direction. *Are opposing arrays beneficial--- (provide considerably more eddy current resistance)?* Whether or not I use opposing arrays, I plan to be able to adjust the overall resistance by either changing - the air gap, or - the array's position relative to the distance from the center of the disk, or - how many magnets are actually positioned adjacent to the disk to create the magnetic field.
@jadoke20733 жыл бұрын
I’m sure this is a good as the rest of your videos, but 10 minutes in and I’m so confused on exactly what you are doing…. I guess I should have watched the whole video. A visual on your setup on the drill press would have been helpful. Thanks for your videos, by the way.
@SuperMagnetMan3 жыл бұрын
Don, sorry to be late in responding - but thanks - I will keep your suggestion in mind for future videos.:)
@oke1263 жыл бұрын
I would use aluminium instead of copper. It has no magnetic susceptibility and offers superior heat capacity.
@gijsv84193 жыл бұрын
Try Silver :-)
@clarkcowan39845 жыл бұрын
This is a terribly crude experiment. What if you used 1/2 inch disk magnets. The separation between magnets would make a bigger difference to the flux between the magnets. The sizes are a mess in this experiment.