This device is the real self-running overunity?

[NTesla]

That's unfortunately also what I've seen in my tests and in the videos But I still hope, there is a way to make them roll
As for tests - I don't think you need such big and strong magnets. Waste of money. I'm using these:

http://www.magnesy.eu/mp_50_x_7_x_5__n38h_-_magnes_neodymowy-t-599.html

Strong and big enough. And have a hole just fitting my shafts.

One more important thing - don't use iron or any other magnetic material shafts. I'm using brass shafts which I had rifled (to mount the magnets on the shaft using brass or plastic srews). This way you won't have any unnecessary flux leakage. Unfortunatelly these shafts are not cheap. I've tried plastic ones but they are not stable enough.

Nice find. I bought a couple of non-magnetic shafts a few years ago for some magnet motor experiments, and your right they are not cheap! When it comes to replication attempts, I generally favour higher rated (and thicker) neodymium magnets over cheaper but lower gauss alternatives unless the magnet type and gauss is important - hence why I would not normally consider ceramic magnets. Plus I have a child like wonderment of the power of an N52 neo . Sounds like you are well on your way to a replication - feel free to post your progress here!

[Airstriker]

Nice find. I bought a couple of non-magnetic shafts a few years ago for some magnet motor experiments, and your right they are not cheap! When it comes to replication attempts, I generally favour higher rated (and thicker) neodymium magnets over cheaper but lower gauss alternatives unless the magnet type and gauss is important - hence why I would not normally consider ceramic magnets. Plus I have a child like wonderment of the power of an N52 neo . Sounds like you are well on your way to a replication - feel free to post your progress here!

Remeber that this wonderment can be harmfull And always use some plastic spacers between the magnets when you stack them one onto another - it's easier to manage them this way. If I build something usefull I will share. But first I need to clear my theoretic doubts.

[Dr]

@gauschor: I believe Mr. Walker said in his first video that his magnets were high strength neos, I found some 3" odx 1/4 id x1/2 " thick NdFeB N42  with 165 lbs of pull force magnetized through the thickness for 19.99 at Applied magnetics. com . got  them on order

[gauschor]

I've understood he used "rare earth magnets". This term was not clear to me. However I just did a Wikipedia search and found: "rare-earth magnets are the strongest type of permanent magnets made. There are two types: Neodymium magnets and Samarium-Cobalt magnets"

Guess you are right then He definitely uses very strong magnets / neodymium. I wonder though how it can be so cheap because most shops here in europe are very costly...

[mijdtr]

hello.

the magnets are neos,   approx 2-1/2 to 3 in x 1/2 to 3/4 in thick.   

coil size needs to be within the area of the magnet as it passes,  many winding small gauge wire.  i am thinking coils from an automotive relay will do the job as long as it is not any longer than the magnetic field will reach. coil spacing from magnet is as close as possible without it getting hit by a passing magnet.  this is where i find it important for stability of the rotor and mags attached to the rotor.

some "tuning in " of the coils will be necessary to find the best placement to the rotor.

magnets are expensive, they can be found, overstock, secondhand or magnet clearinghouses?

i'll check out the links of suppliers.  thanks guys  i have found a place here in michigan that will make them custom for a one time tool-up fee and then after that a per magnet price very reasonable.

peace, love, live, and let live,
joe