Sorry to disabuse you of this notion Lou, but I'm afraid that sticking magnets on the gear in the Staton gearbox is not going to cut it.The key to inducing useful voltages is to have an adequate magnetic flux captured by the generating coil,this means having a small (below 1 mm) airgap in the closed magnetic circuit (any magnetic field is closed upon itself ).Otherwise it takes zillions of windings with attendant high R and of course low output.The basis fact is that the reluctance of the air gap is orders of magnitude higher than the iron or the ferrite portion,and will determine the magnetic fieldstrength and flux.(field strength x area) A U shaped pick up coil would help some,in closing the magnetic curcuit but you would still have the thickness+ of the case to contend with,not only that,the moving field would also induce eddy currents in the aluminum, reducing the exterior magnetic flux still more.I don't think anything workable electromagnetically could be stuck inside the casing either.If this stumps you, get a treatise on the design of electrical machinery,I can't get further into the math here.As far as the stepper motors are concerned the article in question was too short on specifics to be of much use regrettably,no info on winding resistance and inductance or on V/rpm, all necessary parameters to assess the suitability of these devices for use as generators.