Using a motor as a generator but looking to test something Why would or would they not be good generators thanks

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    $\begingroup$ What is your definition of "effective? effective can mean it fits in the space or exceeds a given power density etc $\endgroup$ – Solar Mike Jun 26 '19 at 7:48

DC motors make fine generators. You can test them by connecting the shaft of the motor to the chuck of a variable-speed electric drill and connecting the motor wires to a load resistor; you then measure output current and voltage as functions of drill speed.

  • $\begingroup$ An simple testing method... The load resistor can be as simple as a car headlight bulb ie 12V and 55W etc $\endgroup$ – Solar Mike Jun 26 '19 at 7:47

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