If properly wired to send the emf back to an appropriate rechargeable source battery, mechanical COP figures of 3-6 are possible with the CD motor unit. That depends upon such factors as quality of construction, stator winds, and measurement methodology. Given the problematic nature of mechanical efficiency calculations, many prefer to use the crude 'back emf to supply' metric, to measure the performance of their units. As a rough guide, allowing for the halved current draw effect and the increased rotor speed documented by Mr Adams, an 80% of back emf to input number, indicates a mechanical COP of about 6 to me, and an electrical COP of 0.8.
What is a 'true' Adams motor?
There have been some sour grapes from people who say I have not built a 'true' Adams motor. Well, allow me to point out that the early Adams motor prototypes used star wheel timing systems and alnico magnets. It hardly needs to be said star wheel is a very primitive mechanical timing system, and alnico magnets demagnetize very easily, and are inferior to ceramic magnets for motor applications. Not even Mr Adams builds such 'true' Adams motors any longer. The Adams motor is a system of physics - it does not specify construction materials. The basic principals are a switched reluctance pulsed DC electric motor, whose rotor magnets are wider than the stator core faces, and whose stators contain an integrated generator functionality. The result of this is the delivery of a brief negative impulse from the rotor magnets when in register, that converts the delivered current to time reversed emf, that flows backwards to the source. The logical cut down home edition of those principals, is the experiment given on this web page.
Is the Adams motor a free energy device?
Depends how you define free energy. Let me quote from the learned Mr Aspden's outstanding patent abstract:
An electrodynamic motor-generator has a salient pole permanent magnet rotor interacting with salient stator poles to form a machine operating on the magnetic reluctance principle. The intrinsic ferromagnetic power of the magnets provides the drive torque by bringing the poles into register whilst current pulses demagnetize the stator poles as the poles separate. In as much as less power is needed for stator demagnetization than is fed into the reluctance drive by the thermodynamic system powering the ferromagnetic state, the machine operates regeneratively by virtue of stator winding interconnection with unequal number of rotor and stator poles. A rotor construction is disclosed (Fig 6, 7). The current pulse may be such as to cause repulsion of the rotor poles.
As stated above, it requires less energy to demagnetize the pm field in the stator cores, than you gain in the 'yaw to register' stator attraction phase, because of the 'free precharge' Lenz effect manifested in the overwound generator configured stator coils. Is that free energy? You tell me. Sounds just like a scientific effect to me, rather than something 'free' and magical. What Mr Aspden was unable to state because his unit for unknown reasons was not capable of the necessary high rpms, was that the 12-15% energy gain you make from that asymmetry, causes a brief negative impulse to be issued from the central pole face of permanent magnets, a process clarified by the recent disclosure of the POD magnetic schematic. This is conducted along the length of the stator core, hence the current pulse is converted to a time negative polarity. It then promptly flows BACKWARDS to the source, which it recharges. To this extent, it is perhaps more accurate to describe the Adams motor as a mechanical transductor, rather than a free energy device as such. I do not see the term 'free energy' as scientifically helpful here. The Adams motor simply converts energy from one form to another, in so doing reversing the direction of current flow, enabling a high speed rotor to be run essentially for 'free.' Mr Adams has quoted an unloaded mechanical efficiency of 600% - getting within striking distance of that kind of number is actually fairly easy, you may be surprised to learn, when wired with an appropriate mosfet and rechargeable battery. Hence in the basic setup massive unloaded mechanical over-unity in the hundreds of percent, yes, electrical over-unity, no. It is the Adams motor - not the Adams generator.
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It seems like the efforts to find the best alternative energy sources are seriously being looked into by lots of countries including most US cities. One proof is the signing of the Kyoto Treaty. The main aim of the concerned group and individuals is to lessen the greenhouse gases and pollutants.