Hilden-Brand Magnet Motor

[acp]

Maybe because there is an air gap between the laminated field pieces and the rotor,  and that there is no gap between electromagnet and the permanent magnet between the laminated field pieces. therefor with current off, magnetic flux will take the easiest path. I was allready thinking if it was really necessary to have the jacket around the permanent mag, and not the electromag and perm mag just as close as possible as in Jack's new arrangement.

What I'm curious about is where the magnets fit in in the rotor, Jacks drawing doesn't show them, ( he can't give it all away on a plate  for us  )

Regards

Albert

[acp]

Hi Honk,

That graph you showed a few posts ago of force to distance of a permanent mag seems strange, it seems to show a linear relationship between force and distance. This doesn't seem to be the case in real tests I've done with a permanent magnet. I think the relationship for permanent mag is force = inverse of distance squared( somebody correct me please if I'm wrong, at any rate I'm certain it isn't linear as the graph seems to show).  By the way the relationship for force to distance for an electromagnet drops off far quicker than for a permanent magnet. For example I have an electromagnet that can hold 135Lbs for 3 Watts of energy, but I can easily hold a steel plate 1 - 2 mm's with my fingers above it with it switched on. I think this wouldn't be possible with a permanent magnet that could hold the same amount.

Regards

Albert

[Honk]

Hi Albert.

It does acctually drop off, but I had to increase the distance to 5mm to see it.
When playing around with the N50 magnets I got, they feel pretty much like the graph.
They do drop off, but it's not that noticable at close range.

By the way, did you use a piece of masking tape when you tested the electromagnet
at 135Lbs of lifting capacity. Else you will get a false reading, I think....?
An electromagnet have the strongest flux in the center of the iron core.
I believe this is why a magnet feels stronger. It has a more uniform flux over the surface.

If Jack doesn't need the valve to accomplish overtunity, then his patent will be obsolete. But I suspect that he will loose some flux through the rotor without
the valve because of the very tiny gap he got. Is is approx 0.1mm.
I to have noticed that there is not much room to accommodate a magnet below
the coil, but it is possible if he makes a flat electromagnet.

[Honk]

Hi.

I tried and tested the idea with the magnet outside an iron jacket.
To get accurate readings I used some silicon steel I got. I tried both ferrite and Neos.
I'm sorry to say that no matter how I tested it I could not get all the flux to take the
shortest path. As soon as I mounted a piece of silicon steel simulating the rotor some
of the flux from the magnet took that way. I tried gaps up to 1 mm.
I also tried different positions of the magnet between the rotor steel and iron core.
I believe Jack will use the valve on his new motor anyway, or else it will not be working at max efficiency.

[yorkshireminer]

I'm curious to? 

Is Jack using pulsed DC or AC If he was using AC wouldn't he be changing the polarity of the coil core alernatively shorting the flux through the coil core on one phase of the cycle and then reinforcing it in the other phase of the cycle, and so into the Rotor.

Deep regards

Yorkshire miner