The optimal Configuration?

So how do you get best results for least hassle from the Adams motor? Here is my suggestion.

• I endorse the approx 3/8" stator head 6/8" rotor magnet diameter geometry. 

• Wind the 3/8" head core until it is fully 6/8" wide. This geometry was used by Mr Adams for many years

• Mild steel nails or bolts work well as cheap and effective stator cores.

• Make sure you have good quality ceramic / ferrite magnets, grade 5 minimum, perhaps grade 8 preferred

• For optimal efficiency, you want to be running close to the demagnetization voltage of your stator cores, that is to say, the voltage required to fully eliminate the rotor drag back. Allowing for the voltage scales used in power supplies, and following the above suggested part size and geometry, I suggest 12v operation for ceramic magnet based motors, ( 27-30v for NIB based motors - which I do not endorse)

• Use a simple 4 magnet rotor template, all S poles out

• 3 stator layout, pulsed and timed separately off a common source, 120, 240, 360 degrees, pulse widths do not quite overlap.

• Start with 24 awg wire (0.56mm), once up and running, if possible raise the resistance of each stator to about 10 ohms

• Make sure the rotor is stable, and spins for at least 10 seconds without stators present when pushed

• 1.1 mm air gap between stator core face, and rotor magnets

• Rechargable 12v battery you can gate the current back into with mosfet based commutation

I think you will find that all works rather nicely, and in addition is a very low cost and simple engineering proposition, so long as ceramic magnets are used. Ceramic magnets are the best over-unity magnets. They deliver negative impulses most readily.

Tim Harwood - June 02