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Old Aug 19, 2014, 01:27 PM
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30 mm Fan Test Results

Hi, I thought I'd post my early test results in a new thread. My first thread was about designing and printing out a test stand and custom fans. I've always been fascinated by EDF and micro's in particular so when I saw Meerkat's Hunter thread and his high tech approach I thought I have got to give this a try. I'm a retired Senior Designer from Ford and have years of experience in various CAD programs.
Based on what I've read the HyperFlow fan looked like a good design to start with. My goal is to equal or exceed its performance.

This is my first 'go around' at this this so every step is a new experience.

This is my setup :

SMC 2s 4600mah 70c 'shorty' battery
Neu 7300Kv and 4000Kv motor
Ammo 11500Kv
CC Talon 25 amp ESC

Blades............. A.............. V.............W............... T ...................G/W
___3________4.83 _____7.95____37.8______70__________1.85********* HyperFlow Fan........... ?P/D.........Ammo 11500Kv............2S

___3________2.12______8.11____17.1______42________ __2.45*********HyperFlow Fan............?P/D............7300Kv........2S

___3 _______ 3.27______7.88____25.8______60__________2.32****** *** Version 1 Fan..............1.5 P/D........7300Kv......2S
___5________ 3.68______7.80____28.3______64_________ 2.26
___7________3.84______7.75____ 29.6______62_________ 2.09

___3________ 4.74______7.82_____33.2 _____69________2.07 ********** Version 2 Fan..............2.5 P/D.........7300Kv......2s
___5________5.34 ______7.74_____ 41.6_____ 78_______1.87
___7________5.65_______7.70_____43.2_____80_______ 1.85

___7________3.05_______11.75_____35.4____72_______ _2.03***********Version 2 Fan..............2.5 P/D...........4000Kv.....3S


My next step was to design a version 3. I sent out 7 new designs to print and hopefully I should have them by the end of the week.
Fingers crossed ....
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Last edited by jumo004; Aug 19, 2014 at 02:25 PM.
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Old Aug 19, 2014, 02:28 PM
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This is the link to my test stand thread :

http://www.rcgroups.com/forums/showthread.php?t=2174076
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Old Yesterday, 03:21 AM
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Nice Barry

Did you take any pics and how did the rotors hold up?
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Old Yesterday, 09:10 AM
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I'll take some pics of the fans (sorry I only have a camera phone).

The fans held up really well to my surprise, maybe because I'm only running them on 2S ? They require very little clean up and seem to require very little balancing.
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Old Yesterday, 11:55 AM
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Here's some pics and some CAD screen shots which show the fans in comparison.

The 2.5P/D had better numbers and it's obvious why ...

Still not happy with the performance, got some more stuff to try ...

Thanks.
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