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Old Jan 31, 2012, 09:48 PM
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Irvine, Calif USA
Joined Feb 1999
12,241 Posts
I have found very little new data on any of the fans I listed ...

Whatever data I found I have added; it seems that the lowest performing data points are (not unexpectedly) associated with outrunner motors, some with rather miserable efficiencies (again some, eg Sk, a bit better than others).

I have not broken down each fan data sets into inrunner (Neu, Het, TGY edf) vs outrunner (Sk, TGY heli motors etc); would have been too much work to plot. But it's discussed in detail earlier for the older data.

It's clear that if you couple a poorly designed fan with a miserable motor you will get a low efficiency score (=good hand warmer) .

The result is a 1.5 min flight with a smoking hot battery and the end of the flight.

I think I'll use the CS-12bl fan as a paperweight

Red dots : JetFan 90mm

Green dots : WeMoTec MidiFan 90mm

Purple dots : Stumax 90mm

Orange dots: Het 90mm fan

Yellow dots : VasaFan 90mm

Cyan (light blue) dots : CS 90mm 12-blade 90mm

Magenta (purple red) dots : Schuebeler DS-51 carbon fan

Black dots : JePe 4-bl carbon fan (Spiderfan)

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