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Thread: Suitable 12 volt motor to drive air con pump

  1. #1
    Junior Member
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    Suitable 12 volt motor to drive air con pump

    Hi Guys.
    i would like to drive a air con compressor from a car by a 12 volt electric motor.
    when the compressor is activated how big will the motor need to be to spin it the same as a car engine does?
    Are they easy to turn or do they require a lot of torque?
    many thanks

  2. #2
    Senior Member AdrianBurton's Avatar
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    I believe the prius has an electric compressor

  3. #3
    Yes, Prius or Tesla. Here is a used Tesla unit pretty cheap:

    https://www.ebay.com/itm/Tesla-Model...-/392088856746

  4. #4
    Senior Member
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    It takes a fair bit of HP to run a compressor so a motor designed for that would be best. Make sure your alternator makes enough amps to run it.

  5. #5
    Senior Member RCR's Avatar
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    Quote Originally Posted by Supercobra View Post
    Yes, Prius or Tesla. Here is a used Tesla unit pretty cheap:

    https://www.ebay.com/itm/Tesla-Model...-/392088856746
    That is pretty cheap, but it's not 12V. Orange cables mean high voltage.

    Bob
    Bob custom '84 Fiero SE --->>> custom F408
    http://www.madmechanics.com/forum/cu...ilepic37_1.gif

  6. #6
    Quote Originally Posted by RCR View Post
    That is pretty cheap, but it's not 12V. Orange cables mean high voltage.

    Bob
    Yes, you would need to add a DC-DC converter to match the voltage. Probably simpler to drive the compressor from a 12V motor.
    Last edited by Supercobra; 08-03-2018 at 05:50 AM.

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