@griffinru;
The reason why to use segmente magnets, is because the eddy currents are much smaller, especially under partitial load. A segmented magnet hasn't neccesary got a higher magnetic strength than a non segmented.
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To obtain higher torque you need to create more poles
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not entirely; the power/diameter of the magnet is very relevant with this. And it is not said that a segmented magnet is stronger either. A big lehner motor (like the 2240/2250) will have loads of torque and at the right voltage it's also very efficient.
a 2 pole isn't weaker in torque than a 4 pole. (comparing a feigao XL with a plettenberg bigmaxximum)
A neodym magnet will loose his power above a certain temperature. (Daniel knows the exact number, i don't)
All the producers of BL motors use the pressed winding.