Thread #2976770
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Advice on using eddy current on aluminum. I want to drive something along an aluminum sheet without any actual contact. My idea is putting a magnet wheel inside. Could it work and what would the optimal magnet orientation be?
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>>2976770
>Could it work
No. Sage.
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>>2976896
How bout dont sage and keep it alive because my proof of concept worked and my prototype will be up here next week.
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I'm lost is this not a permanent magnet stator? aluminum has higher resistance than silver so heat could be an issue.
i think it was pole star that uses a 3d printed version to decrease air-gaps and thus r-value.
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>>2977544
It is not a permanent magnet stator, it's just a scrap part I had that already had bearings. The magnetic come from neodymium magnets placed alternating around it.
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>>2977544
I can show eddy current braking, and if I slide the aluminum forward and back under the wheel it spins corresponding. Next step is to motorize it and put it on a vehicle to see how much drive I get. The final product will need a wheel with less than 1.25" diameter, so this is just a test setup.
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>>2977530
Post webm of it working
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>>2976770
>Could it work
Yes. But very low power. This us how electromechanical watt-hour meters work.
>and what would the optimal magnet orientation be?
Much smaller air gap between magnet poles than this
>>2977530
You'll need some sort of field return path between your rotor and the bottom side of the air gap with the aliminum plate.
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>>2977734
Pull string to spin it up. Rolled it over a couple times to show clearance.

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