Thane Heins Perepiteia.

[aether22]

I think it is around A$14 / kg for 1mm wire in 10Kg spools here in Australia.

Ok, I have researched and I can get 100grams for $10 from Surplustronics, or 1Lb for $110 from RS Components.

So PulsedPower, I am seriously interested, please tell me who that's from and if they don't ship to NZ can you send it over? or maybe we have them here?

I have been putting off experiments due to the price.

Infact I'm gonna send you this as a PM too since I'd rather not wait to verify this price!


BTW copper costs only $3.50 a pound (not sure of it's current price but that was a recent high in '07).
So at about $7US to make a KG the price PulsedPower quoted makes sense even though it's AU money that's still close to double the raw material cost.

But I'm paying x17 times more per pound! And groundloop is paying a similarly awful price. this needs to be rectified!

[Groundloop]

Thane,

I would like to address one thing you stated.

"THEY DO HAVE AN EFFECT.
CHECK OUT PART 1's VOLTAGE JUST BEFORE THE COIL IS SHORTED approx 70 V.
THEN CHECK IT OUT AFTER THE STEEL BAR IS INSERTED.
THE VOLTAGE INCREASES TO 90 V - PRE - COIL SHORTED.
THE MOTOR INPUT IS NOT INCREASED."

Are you sure that your steel bar is increasing the voltages in your output coil because of some very low back coupling of bemf to the motor? The effect could very well be the fact that your motor become more efficient because the steel bar is improving the magnetic field in your motor because of a strengthening of the rotor field in the motor itself. I ask because when I put a Ferrite to the end of my coil I get more core mass to the coil and my voltage goes up because of that. In my little motor setup I get a voltage gain of approx. 1 Volt by just adding more core to my coil. So this is a dramatic big effect compared to the back coupling of some low gauss from the magnets. This effect does NOT explain why a motor speeds up when your coils are loaded, just to be clear about that. One way to test this is by running the motor without any load at a preset voltage. Measure the rpm before and after a steel axle is connected to the motor.

@PulsedPower,

Yes, everything is exspencive in Norway. 
By CRO you mean a Catode Ray Oscilloscope?

Groundloop.

[PulsedPower]

@groundloop

By CRO you mean a Catode Ray Oscilloscope?

Sure do, not that many use "cathode rays" these days, the only problem is that is will only pick up changing flux but given there are 4 magnets on your rotor there should be some change in flux as the rotor turns.

[aether22]

PULSEDPOWER, GUESS YOU HAVE NOT NOTICED SO THIS IS IN ALL CAPS!

I AM VERY INTERESTED IN VERIFYING THE $14PER KG YOU MENTIONED FOR MAGNET WIRE.

Can you please tell me where from?
And if they don't ship overseas would I be able to get you to send me some? (If not I know others in OZ)

It costs SEVENTEEN TIMES MORE here. 

OK NO MORE SHOUTING!

PROMISE

ah, just wanted to test the Marquee

[Groundloop]

Group,

Today I made a soft Iron rotor plate and glued the plate to my motor. The center of the plate is in direct magnetic contact with the motor axle.

Test 1:

Input:  230VAC @ 0,03Amp. = Approx. 6,9 Watt Apparent power.
Output: 9,4VAC over 470R load. = Approx. 0,188 Watt Apparent power.
Output coil: Ferrite 100mm x 10mm, 1600 Turns 0,35mm wire.
(Same coil as before.)

When I short the coil the motor stops.

Groundloop.