/diy/ - Do It Yourself

>>1560741
>so that when the rotor rotates the magnetic field "cuts" across the conductors.
>and that's what creates torque when there is current in the windings

Which is why he used a halbach array to try and extend the magnetic field as far out as possible, you can see with the viewing film that the field does indeed cut across the windings. Would it be better with a iron core, of course, no one is denying that, but saying that the motor produces no torque just because it doesn't have an iron core is flat out wrong.