Thread: New Product Change Sun 10 blade 70mm
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Old Oct 11, 2012, 05:59 PM
Odysis is offline
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Life begins at transition
Australia, VIC, Sale
Joined May 2007
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Before you worry too much about efflux velocity, volumetric flow (cfm) and all that 'fancy soundin' stuff, have a read of the 'how to compare fans' thread that was recently brought up.

I thought I gave a fairly good step by step, including some of the reasoning behind statements like "any two fans with the same exhaust diameter, producing the same thrust, will have the same efflux velocity".
That is completely independent of number of blades, RPM, power, even fan diameter.
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