Windyone
Although you mention that was the question, it was rapped around the statement "I got 12 magnets for $75 bucks and couldn't resist." I don't know the best use for those magnets but my suggestion is one, maby with square wire even better.
Cheers
gww
OK, so here are two "apples-to-apples" designs with the restriction of using all 12 magnets ...
Over-Lapped coils:
3 phases x 3 coils per phase = 9 coils
Ratio = 2 magnets per 3 coils
Requires 6 pairs of magnets - dual rotor design
Double-width stator
Double-width stator has decreased flux vs a single-width stator
smaller diameter
Side-By-Side coils:
3 phases x 3 coils per phase = 9 coils
Ratio = 4 magnets per 3 coils
Requires 12 magnets - single rotor design
Single-Width stator
Single rotor has decreased flux vs. a dual rotor design
larger diameter
So, are these two 12 magnet designs effectively the same in watts out ?
Questions:
Q1) When the stator width is doubled how does that affect the strength of the magnetic field?
Is strength proportional to 1 / ( d * d ) or 25% of the original strength?
Q2) Is the magnetic field strength of a Single Rotor design roughly 50% of a Dual Rotor design assuming all else is the same?
Q3) BEST USE of 12 magnets?