Tesla's "COIL FOR ELECTRO-MAGNETS".

[synchro1]

 
This video shows a permanet magnet locking device that works by impulse shifting an alnico field. This single wire coil pulse is changing the pole around not magnetizing the alloy: Very interesting effect that in part, drives the Flynn motor  This is well worth a look!


http://www.youtube.com/watch?v=MZzosuvfvE4

Flynn gets the power of 3 magnets from 2.  A roman numeral II with an alnico and neo cylinders for cross bars, between ferrite legs completes the "Horse shoe". Imagine a monopole rotor pulsed by a micro second alnico pole switch impulse through a DPDT reed switch! This is not a "Leedskalnin" locking device. This magnet circuit field attracts from a distance. Look at the potential power savings advantage from controling a powerful permanent field with split second impulse, rather then wasting power on electrifing ampere turns.

[synchro1]

Imagine an attraction motor, with a two permanent horseshoe magnet rotor mounted in opposition, and in repulsion to the 'Flynn" pulse power magnet pole polarity. The rotor horseshoes would be attracted to the ferrite legs, then a micro second pulse would release the 3x PM repulsion, and really send the rotor spinning with that little input power. We may new thread to explore this promising new build!!

                                                                       "THE IMPROVED FLYNN GAP ROTOR MOTOR"

                                                                   I broadened the field simply to " The improved Flynn Gap"!

[Farmhand]

I would expect only small difference between steel, copper, al wire in terms of inductivity.
The major difference would be the resistance. Stanley Meyer uses SS resistive wire for his pulse transformers...
If you have lots of turns and thin and long wire - the resistance will give you somewhat completly different.

rgds.

But my point is, weather right or wrong ( I don't mind which) that the steel or iron wire should act as a core as well as a wire. I mean the comparison with steel/iron to other wires when no specific core is involved (air cored coils). I am probably wrong but wouldn't a coil wound from steel or iron wire act as though it had a core of sorts (inductively speaking) even without a core piece proper. Meaning that say 100 meters of steel wire wound as an air core coil in my imagination would have more inductance than 100 meters of copper wire wound as an air core coil. I don't see why the steel/iron windings would not act as a kind of core to increase the inductance, but not as a core to concentrate flux as a regular core would. The steel wire thing is just a matter of interest I have no use in mind for that, just wondering.

Still cant find any aluminium magnet wire.   Does anyone know if aluminium magnet wire exists ? I mean thinly insulated stuff so as much wire as possible can go on a certain former. I would like to build as light a motor as possible but not a small motor and I don't want to try to use air coils I want to use cores of some kind to get good force on the rotor. I can get uninsulated aluminium wire as welding wire, but how to insulate the turns, the layers can be insulated easily enough but the individual turns per layer has me a bit stumped except for using some spacing material between turns, then a short is but a bump away kind of, shorting between two individual turns is not a great loss I guess if it was to happen it's not the end of the coil.

Cheers

[TEKTRON]

But my point is, weather right or wrong ( I don't mind which) that the steel or iron wire should act as a core as well as a wire. I mean the comparison with steel/iron to other wires when no specific core is involved (air cored coils). I am probably wrong but wouldn't a coil wound from steel or iron wire act as though it had a core of sorts (inductively speaking) even without a core piece proper. Meaning that say 100 meters of steel wire wound as an air core coil in my imagination would have more inductance than 100 meters of copper wire wound as an air core coil. I don't see why the steel/iron windings would not act as a kind of core to increase the inductance, but not as a core to concentrate flux as a regular core would. The steel wire thing is just a matter of interest I have no use in mind for that, just wondering.

Still cant find any aluminium magnet wire.   Does anyone know if aluminium magnet wire exists ? I mean thinly insulated stuff so as much wire as possible can go on a certain former. I would like to build as light a motor as possible but not a small motor and I don't want to try to use air coils I want to use cores of some kind to get good force on the rotor. I can get uninsulated aluminium wire as welding wire, but how to insulate the turns, the layers can be insulated easily enough but the individual turns per layer has me a bit stumped except for using some spacing material between turns, then a short is but a bump away kind of, shorting between two individual turns is not a great loss I guess if it was to happen it's not the end of the coil.

Cheers

http://www.hmwire.com/Aluminum_Wire.html

[Magluvin]

But my point is, weather right or wrong ( I don't mind which) that the steel or iron wire should act as a core as well as a wire. I mean the comparison with steel/iron to other wires when no specific core is involved (air cored coils). I am probably wrong but wouldn't a coil wound from steel or iron wire act as though it had a core of sorts (inductively speaking) even without a core piece proper. Meaning that say 100 meters of steel wire wound as an air core coil in my imagination would have more inductance than 100 meters of copper wire wound as an air core coil. I don't see why the steel/iron windings would not act as a kind of core to increase the inductance, but not as a core to concentrate flux as a regular core would. The steel wire thing is just a matter of interest I have no use in mind for that, just wondering.

Still cant find any aluminium magnet wire.   Does anyone know if aluminium magnet wire exists ? I mean thinly insulated stuff so as much wire as possible can go on a certain former. I would like to build as light a motor as possible but not a small motor and I don't want to try to use air coils I want to use cores of some kind to get good force on the rotor. I can get uninsulated aluminium wire as welding wire, but how to insulate the turns, the layers can be insulated easily enough but the individual turns per layer has me a bit stumped except for using some spacing material between turns, then a short is but a bump away kind of, shorting between two individual turns is not a great loss I guess if it was to happen it's not the end of the coil.

Cheers

"Still cant find any aluminium magnet wire.   Does anyone know if aluminium magnet wire exists ? I mean thinly insulated stuff so as much wire as possible can go on a certain former."

Some speaker companies use aluminum wire for their voice coils. Ive seen flat(well rectangular) and square wire on voice coils but not round as of yet in Al. So yes it should be available. Im pretty sure Al has a higher melting point than copper and is definitely lighter so high power and less moving mass could be a motive there. If we were to pick apart the resistance value differences, for a speaker 4 ohms is 4 ohms and 16ohms is 16 ohms.   I dont believe there are any operational differences between copper and aluminum coils with equal/similar electrical properties.

Iron wire? I dont know what would happen there. If it acts as a core, then maybe most of the field produced remains in the wire/core till over saturation. I dunno. Maybe it wont saturate so easy because of a core with many gaps and voids between windings. Square wire would help but still a bit gappy.

Mags