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Originally Posted by redleader
... They're probably better suited for radiators...
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That's exactly the application I have in mind.
Axial fans, when undervolted to be quiet, have a really hard time pulling air through a heater core type radiator.
I don't have a curve for the blowers above, but I've been looking at
other cage blower curves - and it looks like they both start out generating lots more pressure and lose it less quickly as the volts/revs drop. What I don't know is how quickly the noise drops as the volts/rpms drop.
As it is now, I have two undervolted panaflo axial fans "stacked" with a spacer between so as to pull air quietly through a heater core. IMHO the cage blower size/shape isn't any more annoying than this...