Another Cold Running Adams Motor Using A Hard Drive Platter to Make an NIB Motor

Adams Motor

This fascinating motor was based upon a rotor scavenged from an old computer hard drive. Hence as one would expect, it is almost entirely frictionless, and also very well calibrated. Between the dual hard drive platters reside 4 1/2 " (12.7mm) square faced NIB magnets, fixed in place with high strength epoxy glue, at 90 degrees apart. The diameter of the hard drive platters (disks) is 130mm. The stator cores are made from permalloy (these were found to produce better results than relay cores). The dimensions of stator cores are as follows = 6x6x45mm. Each stator has 450 turns of enameled copper wire of 0.56mm diameter / 24awg. The switch timer circuitry was borrowed from one of John Bedini's motors.

Hdd Platters Reading Speed

In the above picture you can see the oscilloscope reading. The back EMF (cemf) was connected to the power supply (car / automobile battery 12V). The duration of the pulse command and back EMF spike was measured on an oscilloscope, and as can be seen, the back EMF is a full 80% of the delivered pulse width! Hence the constructor of this motor believes the efficiency of his motor is 80% and NOT OVER-UNITY. The motor runs at about 2800 RPM, and does so ABSOLUTELY COLD, as does the circuitry.

The initial motor test results were as follows:

• The battery started with a rating of 12.38 V

• Then a load (the motor) was placed on it, and the battery voltage fell to 12.32 V

• After 2 hours the battery voltage rose to 12.35 V

• After 20 hours battery voltage was recorded slightly lower at 12.32 V

• Then the battery was then disconnected


As Sweet noted with his SQM unit many years ago now, the efficiency of negative energy devices fluctuates for reasons that are still not properly understood. The time reversed 'back emf' from this motor is at times enough to compensate for current draw, at other times not, giving an overall averaged battery recharging efficiency of about 80%.

For comparison, a previous motor managed 10000 RPM - but it ran hot, and efficiency was only about 20%. It had larger magnets (NIB) and fewer stator turns. So this this constructor had to build 2 motors before he obtained cold current.

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  • Geraldino
    How to make bedini hard drive?
    4 years ago

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