STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[Jimboot]

@Ossie,

How's your motor going ?

I picked up one of the automotive Hall Effects from Jaycar.

Can you please describe how you picked out the magnet ?

Kind Regards, Penno

Just finished my rotor now to build the circuit also with Jaycar parts Just about to place an order now for some Metglass toroids. This thread is getting interesting!

[Airstriker]

exnihiloest.... where a A do you see any interaction here ??!!!!!!!!

[gravityblock]

If your magnets are above 0.5 T, then you will require more gap between the magnets and core relative to the Steorn demos.  If it's below 0.5T, then you will need to decrease the gap.  Their magnets are right on the borderline with 0.5T if my memory serves me correctly.  That must be the reason for the gap between their magnets and core.  The dual magnets will need to be matched as closely as possible also.

This is all starting to come together nicely.  Great Job everybody.  I think we can build this even if it does have high tolerances such as a hard disk drive.  It will just need to be fined tuned after all of the components have been matched as closely as possible.


GB

[gravityblock]

How to build an inexpensive Gauss-meter for under $6.00 using your voltmeter.  We will need this to match the dual magnets as closely as possible and to stay within 0.5T

http://www.coolmagnetman.com/magmeter.htm


GB

[k4zep]

Yes your right except they are also occurring at a faster rate so the input is constant!

"This is kindergarten stuff and you're not even understanding the elementary truths.  You're still drinking milk."

What are you saying, I agree with Striker almost totally. The RPM and shorter pulse concept is a common mistake. It is a duty cycle, it is constant at any frequency.

Hi Gang,

OK now that we are getting RPM (Hz of the pulse) into the equation, its time to think about INDUCTIVE REACTANCE of the coil/core module using standard formulas!  Another light will go off!  This device is NOT a static DC coil/resistance formula device, time to leave EL101 lets go up one step!.......It is an AC device!  This explains why the high current (DC) motors we have built up to now run at a much lower current while ROTATING!!

Oh, I'm getting some Metglass cores too......When you plug in that inductance of almost 1 H and frequency in 10 to 60 Hz into the formula, most interesting.  Didn't anyone notice how the current dropped drastically when Ossie's motor was in motion?

Ben