PowerPedia:Kawai Motor

Lasted edited by Andrew Munsey, updated on June 14, 2016 at 10:03 pm.

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To do : The following article needs to be changed from first-person to third-person journalistic prose.



if you type in "magnet rotor" you get many free energy attempts. how about i simplify it for you.

look up: PMA OR Permanent-Magnet Alternator

this has magnets on the rotor good for wind generation. you should be able to capture the emf (depending on app, will need cooling). probably also compatible with the kawai. i may use it in the Phi transformer (generator actually), after i try that in a speedometer (with copper going around the outside) please relocate the above info as i dont know where to put it.

Here is my attempt at explaining the Kawai motors:

Like everybody else, I do not read patents (hard to understand - which is why nobody has done this before), but I do look at the pictures attached to them and thanks to my learning about parallel path I can explain the Kawai motor.

If you decide to follow my instructions, you may find that your motor that you begin with be a difficult design to modify (or one you cannot modify at all). But I shall explain the process behind the Kawai so you could make a modification and still get the same effect or simply build your own from scratch (you might find big motors easier to modify). Be sure to know what happens to the magnet’s flux in the parallel path and/or MEG arrangement.

How a Hybrid Stepper Motor normally works

Stepper motors are designed to only move the rotor a specific distance on application of electrical power. To move it further you need to apply electricity to a different set of contacts. On the rotor, the protruding surfaces we can call poles. the rotor has two halves: North outward, south inward and South outward, North inward which may or may not be attached to each other. The poles wont line up line up (at least on the sites I found). The coils on the stator may have a center tap, if so the wire has been wound on in pairs and wired in series otherwise called bifilar windings. When electricity is applied to a pole on the stator the teeth one half of the rotor will line up correctly and the other will not line up at all. While in motion you would activate the next coil so it would keep moving.

Stator arrangement of Hybrid Stepper motor


Modification procedure


Now we need to only make only three steps which may not be easy. Some of the instructions are hard to put to words and pictures. the stator is usually made of laminations so I explain for that:

Step 1

Disassemble and remove the coils carefully (or simply cut them)

Step 2

disassemble the laminates

Check that when reassembled, they will BOTH be in contact with the rotor on the same stator pole. Look at the diagram (before and after). I don't want you ruining your motor before you check to see if it will accept this modification! It is a must that each of the poles of the upper stator line up with the upper rotor as well as the lower portion of the same stator line up with the lower rotor OF EACH rest point.


(there are eight possible ways to put a laminate in provided the screw holes line up -I suggest: flip horizontally) If not possible either rotate the halves of the rotor (step 1 other side) or assemble strangely - may not look good but hopefully it will work.

If you decide to proceed, snap/cut and sand (so it is smooth) off of the stators off a couple of the laminates so you have equal number untouched on either side and the ones you have cut is enough for the wire to go in-between the ones that are intact.

Step 3

rewind the wire onto the stator: you have two different options: a) wind in a figure 8 b) wind one half of the stator then wind the other half in the opposite direction. (may have uneven wire amounts – should not matter) make sure that when powered the coil will attract the pole of the rotor that will be near it.

finally put it back together.



I think you are to expect COP 4: COP 2 mechanical COP 2 electrical (was not utilized by the Japanese) Minus Some lost in heat.

Upon lining up the rotor with one stator (lets call it pole number one) : the magnetic flux will flow from north to south on the same pole of the stator. When you switch on the power on the next pole (number two) you will redirect the flux across the electrified pole adding to it the flux from the electromagnet. This process gives COP 2 in mechanical power.

Now this alone can make most motors overunity:

When you switch on to stator three you will redirect the flux from stator two. Now the magnet’s flux moving from this (two) to the next (three) will cause power to be moved in the coil of stator two! This might be around 1 COP depending on magnet strength. The next is from a similar principal as the Adams motor: when stator two is powered up the field goes up. When the stator two is switched off the field goes down inducing more power through stator two.

Because we are causing the flux to go in a direction other than what the laminations are designed for, this will produce heat through eddy currents in the stator: probably why the mechanical COP output was 1.2 – 1.6 (the electrical COP was not utilized) in these tests.

Flux pathway in a Kawai motor. Parallel path and MEG people should recognize the technique!


Real Motors





See Talk:PowerPedia:Kawai Motor

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