Fan Rotation

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  • HairyDave
    club member
    Club Member
    • Jun 2015
    • 872

    #1

    Fan Rotation

    I bought a second hand fan and now have a problem. It is probably off a Vauxhall ,marked GM. It works both ways, but, one way air blasts out the other it doesn't. In the 'Car builder' catalogue it says 'On curved blade fans the pointed end should trail'. On my fan this seems less efective. A house fan leads with the pointed end. Any words of wisdom?
  • stevejgreen
    • Nov 2011
    • 3480

    #2
    Re: Fan Rotation

    From decades gone by the idea of a trailing edge fan was to reduce noise, but blades can be designed in either direction and most fan manufacturers don’t bother to mark that on the fan itself.
    i know it’s no help but I have been aware of the issue since I worked at an industrial air movement company since the mid 70’s and we made fans that went both ways.

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    • HairyDave
      club member
      Club Member
      • Jun 2015
      • 872

      #3
      Re: Fan Rotation

      Cheers for that Steve.

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