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Old 10-14-2019, 07:04 AM
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Which one??

I have 3 electric fans on my Kars -all strait blades. What have you used /as far as shape of fan blades themselves? ??~I am going to use plastic-caged,type .Please share with me what fan you used; and what style blades?? thank you much Bob s

Does either one throw more air -than the other?.say 17"as example thank you Bob s

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Old 10-14-2019, 07:11 AM
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on my last car i used a curved blade. a curve blade give more CFM then straight one's. i don't recall the brand or size.
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Old 10-14-2019, 07:45 AM
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Some of the fan suppliers make wild claims about how much air they move, etc. Some fans are more robust (larger motor) and may not fit. Some fans will draw more amps but all will require a relay. Usually the curved bladed fans are quieter than other styles. So, to pick a fan I would use a name brand, curved blade with the larges motor that would fit.
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Old 10-16-2019, 10:08 AM
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The key to performance of any fan is how much static pressure can it pump against at a given desired air flow. Nearly all the manufacturers initially give the CFM at zero static pressure which never happens in a car. Some manufacturers will have a table of performance on their website that will show the true reduced performance with increasing static pressure. Fans with what we might call Fat blades have a better chance of producing more static pressure then skinny blades. The curved blades are intended to reduce the noise and not necessarily increase static pressure..
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