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Thread: Derale 12" Radiator Fans
          
   
   

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  1. #2
    Itoldyouso's Avatar
    Itoldyouso is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2006
    Location
    fort myers
    Car Year, Make, Model: '27 ford/'39 dodge/ '23 t
    Posts
    11,033

    Pushers are not as efficient as pullers, especially if you take what one once a puller and reverse the current to make it spin backwards. The blades have a dish to them and that should always face the rear. I think you will see when you put your fan up front the dish will be facing the front. In that instance the efficiency is about 50% of the fans rating. However, a fan that was built to be a pusher will be slightly higher due to having the correct blade shape from the get go.

    Also, when you use two small fans they are generally not equal to one large fan.

    Don
    Last edited by Itoldyouso; 07-18-2011 at 09:41 PM.

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