Help - Mag-lev bearings

[TomC]

Could someone give me some pointers on the mag-lev bearing set-up of youtube user skycollection.

I am unsure of how the bearing magnets are magnetized and mounted, relative to each other.

Sky did not respond to my request for details.

Would prefer not to spend money on trial and error testing to figure it out.

Hoping someone here already knows these details and will be willing to share the info.

[rave154]

might want to ask johnny davro on here...i remember he had a very similar setup to what skycollection( if thats who you referred to ) had...and also johnnys a good bloke

[Matthew Jones]

I built one, I used these magnets.

Anyway They all sit on the side. All of them on the left side point one direction, and all the ones on the right point the opposite direction.
Both the magnets on the base and the rotor all point one direction.

Then it forces everything in one direction or another. Based on how its setup, you put the needle or pointy end towards something. The smaller the end the better.

I assume you are referring to this setup.

The thing is 2 magnets pointing the same direction will repel each other when they are side to side. So any number of ways will work its just the entire left side or right side has to be pointing in the same direction.

Matt

[jonnydavro]

Thanks Rave,your a pretty decent chap too
Hi Tom.Mathew explains it well and there are a few different ways of setting a maglev setup up but one thing to keep in mind is spacing between the diametric rotor magnet and the axially magnetised lift magnets as if they are to close you will get an unwanted cogging effect.Also make sure you have a well ballanced rotor if you want to run at high rpm's.Here is my maglev motor where i show magnet positions and orientations.
I have done some further work on this motor since i made this vid and it is as good as fully levitated with a new magnet arangement which is repeated at both ends.I enclose a pic
I must admit the maglev bearing setup is one of the neatest things to experiment with and i hope you share your results with us.Good luck and happy experimenting.Jonny.
YouTube - levitating one magnet no bearing Bedini motor

[TomC]

Another question

Thanks guys,

One more thing - got any idea how much weight the levitation will hold before touching? (with the suggested N38s)

My rotor is going to be about two pounds (.9 kilo)

Any recommendations?

[Matthew Jones]

If your magnets are 1" diameter by 1" in height you should be able to carry that. you should have about 2 -3 inch's of clearance.
The only problem with heavy is if you have any out of balance it will just roll out of position.

I am not sure why it would need to be that heavy, but you haven't given any details so who knows.


Matt

[skycollection]

mag-lev bearing

Could someone give me some pointers on the mag-lev bearing set-up of youtube user skycollection.

I am unsure of how the bearing magnets are magnetized and mounted, relative to each other.

Sky did not respond to my request for details.

Would prefer not to spend money on trial and error testing to figure it out.

Hoping someone here already knows these details and will be willing to share the info.

THE ONLY WAY TO FIND THE ANSWER IS research and experimentation ...!!!
IF YOU DON`T HAVE MONEY, YOU DON`T HAVE ANWSERS...!

[ren]

so in short...money = answers