"brushless" cooling fan?

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  • Boaterguy
    Fast Electric Addict!
    • Apr 2011
    • 1760

    #1

    "brushless" cooling fan?

    I have an old ffan from a computer or some other device and it is marked as brushless, but it has two wires protruding. if I look closely I can see a small PCB in there. I tried running DC through it but nothing happened. I want this to cool an OR on a hydro.
  • lectriglide
    Senior Member
    • Nov 2009
    • 538

    #2
    Probably bad. Is it a 5v or 12v fan, and what batteries did you connect to it?

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    • Boaterguy
      Fast Electric Addict!
      • Apr 2011
      • 1760

      #3
      I connected it to an RX directly, it worked previous and I did not use it before now.

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      • Fluid
        Fast and Furious
        • Apr 2007
        • 8012

        #4
        If it is a 12 volt fan it may not work on 5 volts. Connect it to a 12-volt/4S pack.


        .
        ERROR 403 - This is not the page you are looking for

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        • Boaterguy
          Fast Electric Addict!
          • Apr 2011
          • 1760

          #5
          I'll try, I don't have a 4S on me but I'll find 12V somewhere. will a 12V power supply work?

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          • sundog
            Platinum Card Member
            • Feb 2009
            • 878

            #6
            Also, 12v computer fans are picky about polarity. Try it wired the other way.
            Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

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            • Boaterguy
              Fast Electric Addict!
              • Apr 2011
              • 1760

              #7
              I'll try that, does 5V mean 5v? or can I run it on a 4S NiXX pack? (4.8V)

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              • Fluid
                Fast and Furious
                • Apr 2007
                • 8012

                #8
                These things are pretty simple. Every one I have used didn't care about polarity, ran fine in reverse except the fan efficiency wasn't as good. Even my 12 volt fans will run on 7.4 volts. Save yourself the grief and just buy another fan....


                .
                ERROR 403 - This is not the page you are looking for

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                • Make-a-Wake
                  FE Rules!
                  • Nov 2009
                  • 5557

                  #9
                  I have several of the radioshack 12v fans and they run on up to 18v.....................but probably wont work on less than around 9v.
                  NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

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                  • Boaterguy
                    Fast Electric Addict!
                    • Apr 2011
                    • 1760

                    #10
                    i'll pick one up at radioshack today and run it off the balance leads of the 3S batt

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                    • sundog
                      Platinum Card Member
                      • Feb 2009
                      • 878

                      #11
                      Originally posted by Fluid
                      These things are pretty simple. Every one I have used didn't care about polarity, ran fine in reverse except the fan efficiency wasn't as good. Even my 12 volt fans will run on 7.4 volts. Save yourself the grief and just buy another fan....


                      .
                      Fluid, you're showing your age again! Modern pc fans are polarity protected by diodes to only operate in one direction. That is why I suggested checking the polarity. The fan might be fine (no need to buy another).
                      Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

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