magnetic flux shielding idea

[rrintoul]

Thanks Gyula.  I think I've seen all the relevant forums now from this site.  Ya, the video in that forum was the one I was talking about.  Two things I noticed though - I heard that Shaun said his was a permanent magnet acting on a ferrous metal.  That's consistent with what I tried, because you don't want that side of it to interact with the shield.  In the video Craig uses magnets on both sides.  Also, in the Steorn patent the shield is as close as possible to the magnet whereas in Craig's video the shield is pretty far away.  Since the magnetic field drops off so quickly, you don't have a lot of distance to play with, so putting the shield that far away from the magnet loses you a lot of power.

Reade

[rrintoul]

When the shield is really close to the magnet it makes it so much harder to move the shield.  That's the crux of what Steorn has accomplished I think.  By experimenting with the width of the shield and the placement of the row of magnets you try to find an equilibrium like I did with the elastic band, so it's possible to move the shield with low energy.

Reade

[Tito L. Oracion]

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