Hi to everyone
I am the new kid on the block here and you will probably hear questions that are "old stuff", to most of you, by now.
So I have read the main page, about the stator, the rotors ect. I noticed that generally most of you stick to the concept of 12 magnets per rotor, 9 coils, 3 coils per phase. But I am an over-cautious fellow that hates to redo things and will therefor "overkill" most of the time.
So I was thinking more in line of 16 magnets (50 x 25 x 12.5; N42 grade) per rotor and 12 coils; 4 coils per phase. I hope to achieve open circuit volts of 40 or higher. Can you please advise on the following:
1) the number of winds per coil and the thickness of the wire
2) the pros and cons if the coils are longer in length than the magnets (I was thinking of giving the coils a "tear drop" shape towards the centre hole of the stator)
3) if there is a rule when it comes to spacing between magnets on the same rotor
I appreciate any help I can get