Just mulling over the next project (wind generator if you must know!) I
need to find the field winding CORE (the steel, not the copper!) that
surrounds the armature. The thought is to buy a suitable scrap motor,
cut the copper out, (sell it!!), cut the field core apart and rewind to
my specs. I really only need about an inch of core but roughly 12"
inside diameter and 24 to 32 poles.

So the questions: what size motor do I need to look for that uses a 12
inche diameter rotor? How many poles will I find on same?