Why do two drive coils draw less power and create more RPM ?

[DeepCut]

Hi, another noob questoin from me i'm sure someone here can explain it.

I am driving a standard Bedini SSG circuit from a DC power supply.

With one drive coil attached i was drawing 18V @ 300mA and getting 1400 RPM.

I attached a second drive coil in series with the first and i was drawing 18V @ 150mA and getting 1485 RPM.

Questions :

1. Why is the rotor spinning faster ?

2. Why has the input amps been cut by 50% ?

Any education greatly appreciated


Cheers,

Gary.

[Cherryman]

Maybe the old saying "Divide and Conquer" does not only work in politics 

[Magluvin]

Considering what we discussed at OUR, is there a possibility that we can have just 1 or 2 gen sets and the rest are drivers. ;]

Mags

[gyulasun]

Gary,

The input current is reduced to half value because it 'sees' double the DC resistance and double the AC impedance wrt the single coil case.

On your first question: Cherryman gave a good answer I believe,  The more permanent magnets you use in such pulse motors and the more input coils you let interacting with those magnets, the higher the rpm may climb up.   Putting it otherwise: the more flux you enter into the setup (by using the many permanent magnets) the better the efficiency of the input power usage becomes.  I am not saying this input efficiency may increase beyond 100% by this 'divide and conquer' method because I have not tried it but it is sure it increases as said above.  (Years ago member Ian showed this in a youtube video.  See his posts here: http://www.overunity.com/index.php?topic=1754.msg31932#msg31932 )

Gyula

[DeepCut]

Thanks Gyula.

I haven't added any more magnets, just additional drive coils, there are now three coils.

The drive-coils are aircore.

I'm now getting an RPM of 1305 with an input power of 0.97W, whereas with one coil i was getting  an RPM of 1400 with an input power of 6W, that's great for what i plan to do but i would love to understand it !

It's probably worth mentioning that the two additional drive coils are just like the first one, bifilar wound with a trigger wire and a power wire, but in the two new coils the trigger wires are disconnected.

Bedtime ... zzz ...