Originally posted by Turion
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12 magnets that are 1/4th the area of the 2" disks might require more accurate tuning on the fly of counter magnets. But you had it down to 12amps with all the coils? I wonder. Or even 14amps. Those motors are very powerful and I won't even guess how much it should draw with all of the coils in place without the counter magnets. I we knew a relationship or comparison could be made from the old design before opposition magnets are introduced. Just trying to get you to remember those old numbers.
It is my understanding to 12 magnets tuning is more complicated than 5 magnet rotor tuning on the counter
In my experiments shielding is required to get perfection. As we all know cores are not magnets and when they see the powerful attraction of a rotor magnet they pull together, lets say from 1" away very strongly. However on the opposite side the rotor magnet and counter magnet are seeing each other from 2" away
This condition will cause imbalance as you are aware of. So what you have done is to use small counter magnets, adjusting them on the fly. This means that you are trading off peripheral field with TDC strength to get repulsion equilibrium. That rotor is awesome.
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