I have been processing my scrap metals this week to sort the copper and aluminum out from the iron in all of my old transformers, light ballasts, electric motors, 6 and 12 volt DC generators, and old alternators. Copper is over $3 a pound locally if you are wondering. ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
While processing old alternators I have noticed over the years that the Motorcraft alternators from Ford vehicles tend to always have this odd setup of having a typical 12 pole rotor but an odd 11 pole stator winding configuration. Although I am knowledgeable of standard single and three phase motor and generator/alternator working theory this one has always had me pondering on why they did it that way.
On many of the aftermarket rebuilt Motorcraft alternators they are rewound with the expected 12 pole rotor and 12 pole stator configuration but on the factory units they have six of the 11 stator coils spaced normally matching the rotor pole spacing and the other five are spaced in uneven offset steps for the other half of the stator. This pattern is used in all three of the phase windings also.
So whats the deal with the odd factory 11 on 12 design?![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
While processing old alternators I have noticed over the years that the Motorcraft alternators from Ford vehicles tend to always have this odd setup of having a typical 12 pole rotor but an odd 11 pole stator winding configuration. Although I am knowledgeable of standard single and three phase motor and generator/alternator working theory this one has always had me pondering on why they did it that way.
On many of the aftermarket rebuilt Motorcraft alternators they are rewound with the expected 12 pole rotor and 12 pole stator configuration but on the factory units they have six of the 11 stator coils spaced normally matching the rotor pole spacing and the other five are spaced in uneven offset steps for the other half of the stator. This pattern is used in all three of the phase windings also.
So whats the deal with the odd factory 11 on 12 design?
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