Brushless electric motors


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larny
Guru

Joined: 31/10/2011
Location: Australia
Posts: 349
Posted: 11:26am 14 Sep 2020      

I have a brushless motor taken from an old Cassette Tape Player.
It runs clockwise very well.  But, if I reverse the applied voltage, it runs anti clockwise but is erratic.  The speed varies in a cyclic manner.

I looked at a video on how to reverse these motors & it involves transposing 2 wires.  But my motor only has 2 wires.  In other words, the wires I need to transpose are not accessible unless I open the case - which I am reluctant to do in case I wreck it.
Any suggestions will be appreciated.