"Tiny Orbo Replication" over 100% efficiency

[Paul-R]

I received my Enermax Marathon PC fan that according to the ebay ad is supposed to be "friction-free" due to magnets.  What a waste of $8!  -->

http://globalfreeenergy.info/2010/02/01/enermax-marathon-pc-fan/

Magnetic bearings are standard issue in some industries:
http://www.skf.com/portal/skf_rev/home

It may be that there are minimum shaft speeds for good operation

[PaulLowrance]

Thanks for the link. Those are active magnetic levitation  bearings. Do you know where to buy passive magnetic levitation bearings?

Btw, the ones in the $8 fan are by now means magnetic levitation bearings. It's just a marketing stunt.

One idea is to just get a ring magnet where the magnetic field goes inward, and get another another smaller ring magnet where the field goes outward, place the smaller ring magnet on a plastic rod, make another inner / outer ring magnet and place that at the other end of the rod, and you have a passive magnetic levitation bearing!     Problem is, where do you buy such ring magnets.

[PaulLowrance]

Has anyone seen this fun little toy, the Levitron

http://www.youtube.com/watch?v=iv8msBamA3M

[gravityblock]

Thanks for the link. Those are active magnetic levitation  bearings. Do you know where to buy passive magnetic levitation bearings?

Btw, the ones in the $8 fan are by now means magnetic levitation bearings. It's just a marketing stunt.

One idea is to just get a ring magnet where the magnetic field goes inward, and get another another smaller ring magnet where the field goes outward, place the smaller ring magnet on a plastic rod, make another inner / outer ring magnet and place that at the other end of the rod, and you have a passive magnetic levitation bearing!     Problem is, where do you buy such ring magnets.

I found these ring magnets in the automotive section at Wal-mart. It is packaged as a 6" magnetic parts tray with a rubber case to protect the magnet and to prevent marring of surfaces, for less than $6.00 each.  The ring magnets are axially magnetized.  You still need the smaller ring magnets, but it shouldn't be a problem to find some to match the dimensions of these larger ring magnets.  If it doesn't work, then you'll have the ring magnets for other projects.


GB

[neptune]

There are loads of cheap ring magnets from the magnetrons of old microwave ovens . Always short out/discharge the high voltage cap  before working on microwaves.