This topic came up in another group. The stator acts as a magnetic "keeper" for the rotor.
Nothing like running an experiment to know if something is true or not.
I had a motor I didn't care for (MO62-FD04), so I ran dyno tests on it that showed 112 in-oz low-speed torque. I removed the rotor for 5 seconds, then replaced it and re-ran the dyno test.
The low-speed torque now was 70 in-oz, or only 62% of what it was before disassemby.
You may not notice the loss in torque but it is real and it is there.
Mariss |