Until I actually did a large motor conversion (& got it right) I didn't grasp the concepts for decogging entirely. After laying out my magnets a number of times, it finally clicked that if I didn't skew to one imaginary magnet past my layout, I would end up with both ends centered on a stator tooth. Any 2 rows of magnets in the same position (centered on a stator tooth) = cogging.
I now have a 3 horse 3 phase baldour with 84 magnets in it which can be flicked by hand with no cog whatsoever, and turns smooth as silk. Now if the weather would clear up so I can make it do something productive.....
