So a few years ago I came up with the idea of a magneticly powered wheel that could be attached to a generator and power it, it would not be infinite as over time magnets lose their power yet I think it could work. It uses some bar magnets, some 3d printed parts, an axle, a bearing (if its not attached to a generator) and some magnetic shielding material (like the stuff on this link: http://www.lessemf.com/mag-shld.html#273)
The way it works is its effectively a circle with a bunch of bar magnets attached to it with their northern poles pointing towards the circle's centre and their southern poles pointing away from the centre of the circle, some magnetic shielding material is then used to cover the left side of the northern poles of these magnets. Then the bearing is placed in the centre of the circle and some more bar magnets attached to the axle, more magnetic shielding material is used to cover these bar magnets apart from their very ends, the axle is then inserted into the bearing. At this point I am unsure if it will do any of these three things:
The axle spins into life, accelerating so quickly that the whole mechanism shatters and pieces go flying everywhere.
The wheel does not immediately start spinning but when I give it a nudge it once again spins into life and shatters.
I am wondering what you all think about the possibility of this and potential problems it may have (apart from things like air resistance).