Super simple way to see proof Pseudo Solid principle works using ring magnets

[dieter]

I just made a test, simulating this step 4 situation, although I have no such "horseshoe", so i used straight sheets. Again the "I" laminate sheets from a MOT core. So my horseshoe is essentially just straight, other than that the situation is like in the design.
If I approach the rotor (carrying a magnet) to the side of the horseshoe that contains the magnet, then it will be repelled.


If I approach the rotor (carrying a magnet) to the side of the horseshoe that does NOT contain the magnet, then the rotor is attracted.


I can not imagine how an other shape of the horseshoe could change that. But I guess the rotor should not be in contact with both, hot and cold ends of the horseshoe, so the space between the ends need to be big enough. I also think the thickness of the plates is critical.


Furthermore, the conditions at the rotor must be precisels identical like those of the neutral end  of the horseshoe . If the gaps between magnets and plates are only slightly bigger, then the magnet will be repelled, like in a V gate or magnet ramp. Did you test it without the static magnet too? If it's still repelled that way, then the conditions are not the same at the rotor and horseshoe neutral end. Actually, this is one tricky part of the construction and requires high precision. 


I will try it with a true horseshoe shaped horseshoe    asap.


BR

[gammarayburst]

See attached

[dieter]

@everybody, I would strongly suggest to go to youtube and search for "pseudosolid", this will give you many Vids by Butch and makes most of this whole pseudo solid business easy to understand, besides it is really impressive what he does.


@Butch,  first of all, I am working with small calibers here, no killer magnets and huge blocks of steel, just a bunch of 5mm diameter Neos and some sheet metal.


So my conditions are slightly diffrent, but I think the pseudosolid principles apply nonetheless.


I have made some Horseshoe sheets and did some basic tests. One significant problem appeared: when the rotating magnet passes over to the rotor mass, it will be close to the inner tip of the horseshoe beginning, see step 3. But the static magnet is in the other corner. They have to be like that, otherwise the rotating one couldn't pass by. But now it is attracted to that tip! It would be repelled if the static magnet would be right at that inner tip, but as mentioned, that cannot be.


I have found an elegant solution to the problem: I put two additional magnets on the outside of the horseshoe, right on that tip, the polarity in a way that the rotating magnet is repelled by them. That seems to work nicely.


The neutral end of the horseshoe does however attract the rotor with magnet, as desired. I think your horseshoe setup was oversaturated.


BR








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[gammarayburst]

https://www.youtube.com/watch?v=mhfqe2dyR3s

[gammarayburst]

@everybody, I would strongly suggest to go to youtube and search for "pseudosolid", this will give you many Vids by Butch and makes most of this whole pseudo solid business easy to understand, besides it is really impressive what he does.


@Butch,  first of all, I am working with small calibers here, no killer magnets and huge blocks of steel, just a bunch of 5mm diameter Neos and some sheet metal.


So my conditions are slightly diffrent, but I think the pseudosolid principles apply nonetheless.


I have made some Horseshoe sheets and did some basic tests. One significant problem appeared: when the rotating magnet passes over to the rotor mass, it will be close to the inner tip of the horseshoe beginning, see step 3. But the static magnet is in the other corner. They have to be like that, otherwise the rotating one couldn't pass by. But now it is attracted to that tip! It would be repelled if the static magnet would be right at that inner tip, but as mentioned, that cannot be.


I have found an elegant solution to the problem: I put two additional magnets on the outside of the horseshoe, right on that tip, the polarity in a way that the rotating magnet is repelled by them. That seems to work nicely.


The neutral end of the horseshoe does however attract the rotor with magnet, as desired. I think your horseshoe setup was oversaturated.


BR
BR, I got to looking at step 4 again. When the magnet is moved from the rotor back to the lower arm of the horseshoe, that will put two magnets in the horseshoe assembly. Do you see the pull of those two magnets wanting to lock the magnet free rotor arm in position and preventing it from rotating away?








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