Motor test

[davidshaw57]

I burned up the motor or the ESC . How do I test the motor and not burn up another ESC?

[eXoNerated]

Use a continuity test on a DMM and put one lead on the motor case and try each phase. There should be no continuity. A megger is how you can check the insulation but unless the motor was driven extremely hot I doubt that's failed. Usually the controllers go first.

[MarkF]

Look at the winding's and make sure none of them look dark or black.

[Ch.Lucas]

Hi,
some questions. Do you know the kv of the motor ? , Do you have a electric drill ? and do you have a voltmeter to messure volts ?
If all Yes , we can start. Take the drill and place the motorshaft of the brocken? motor in the cuck. Then hold the motor and start the drill to drive the motor . You can feel how strong is the drag of the motor can . This test is ok if you have done such with the new motor , so you know the drag of the can. Normaly it is not very strong. But if some of the coils are bad you will feel a strong dragmoment to hold the can. You can now also messure the induced volts of the motor. All separate mesured volts between the 3 phase wire have to be even . If you know the free running rpm of your drill you can messure the volts and than you can calculate the kv of the open phase .
This volts have to be lower than the kv that you can mesure with , say 3,6 volts direct feed in the motor esc. And all 3 mesured volts of the 3 phase have to be close the same. Little difference allowed because of different magnets , different airgap , different count wind.
A normal drill has most rpm of max. 2000 to 2300 rpm. kv = rpm per volt.

Happy Amps Christian