Simple to make Hilden-Brand style motor

[wizkycho]

@All

to clarify how things works:
...Coil doesn't have to fight against -1.5T or make field of near such strenght...

Coil Only has to make magnetic resistance in original path HIGHER then magnetic resistance in alternative path. When this happens complete flux goes to alternative path - flux would not split like normal current in current resistors in corespondance of ratios of those resistances. it acts allmost binary (0 or 1) for small difference in mag. resistance.
Creating counterfield with coil is making neagtive permeability - mag.resistance...it is not just lowering down permeability.
....
another thing
Gap to rotor or distance from rotor represents very low rel. permeability (1) - so to make trigering even easiear or to make magnet catch
rotor at greater distance why not introduce small airgap (smaller or even equal to gap stator-rotor) within coil...
this gap should be made as such width to, when coil is off, complete flux closes through coil.

So to conclude there are many ways this MagTrans driven motor can go well into FE mode, and not to come back

Wiz

[Ergo]

Introducing another air gap does nothing but to lower the material response to the magnetizing force.
In everyday electronics air gaps is introduced to decrease the sensitivty of the material to avoid saturation.
The more or larger air gaps, the more coil power is needed to obtain the 1.5T you desire in the magnetic circuit.
This is nothing remarkable. It's well known physics. Any electronic stuff you own is based on this principle.
The B/H curve above is only valid in a closed circuit with no airgaps. In a motor with 0.1mm gap the B/H curve is
slightly flattened out and the saturation point moved down the Amp/meter line, not much but clearly measurable.

[Nali2001]

Hi Wiz,
Nah the cores I have have are 1.5T with a max peak of 1.7T
I in some test I did, I noticed that such a core can soak up the field of a neo magnet with 1.5times the surface, without a noticeable surface leak.

Indeed the idle rpm is somewhat high for the switching.
When the thing is loaded down to lower rpm the magnets do cause and rpm increase.
So ya right lower it better for the time being.

@Nali

might sound trivial to You.
The reason for not noticing some change with PMagnets on that precise HQ motors of yours might be core material for which I assume
has low or lower saturation point. -  should try with weaker magnets (AlNiCo - first). Wound core materials have very high permeabilities but saturation already at 0.5T. (except ones that uses lot's of cobalt).

Another reason i could think of is too high rpm. rpm should be low enough in order to switch on and off full magnet-coil flux. At least for first testing purposes rpm should be low.

can this help a bit ?

wiz

[Xaverius]

wizkycho, I feel with you. We live in a time where people get laughed at that want to change the world into a better place. Or get ignored if they want help on some research. We should be living in a world were research is promoted, where they throw all the equipment at you just so you can do research so humanity can keep advancing technologically. It's technology that solves problems not a credit system or the lies of a politician. The political monetary system must be destroyed and become a social technological system. No money no politics no poverty no bullshit.

Hot Damn Broli!  Couldn't have said it better myself!!

[i_ron]

snip
Here a list of simple but good LCR meters. I bought mine a year ago and have never been regretful. I use it in daily basis.
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snip

Thanks Honk, mine arrived yesterday... what a treat! Shoulda had one years ago....

Ron