Avionics cooling fan revisited


Subject:    Avionics cooling fan revisited
From:    Eric Schlanser (eschlanser@yahoo.com)
Date:    Thu Nov 05 - 8:43 AM
-In researching the Aeroelectric-list archives for cooling fans, I-foun
d several interesting posts.
-
-I-copied and pasted-the-post below-from 2003. When I followed-
Bob's link to the fan at MPJA.com,-it was no longer there.-The one Bob 
recommended- (60 cfm and 2 amps)seems like too much when compared to TSO'
d fans like the Cyclone-21 (21-cfm and 0.19 amp) or Ameriking (26-cfm
-and-0.6 amp). 
If Bob is reading, what would you suggest today?
-
Is there a specific alternative fan that would be appropriate to cool the t
wo radios in my OBAM plane besides the-T$O's fans made for certified plan
es? 
Or how to house the suggested computer fans? 
Have such computer fans-been used successfully notwithstanding Bob's doub
ts as to their suitability?
-
Thanks for the list, 
Eric Schlanser--
-
-


Match: 
#83

Message: 
#15485


Date: Thu, 5 Nov 2009 08:43:30 AM PST
Dec 08, 2003


From: 
"Robert L. Nuckolls, III" <bob.nuckolls(at)cox.net>


Subject: 
Re: cooling fans, ONE DOLLAR


>
>There's been some talk about cooling fans, and people have mentioned 8-12
>bucks (I think).- No need to spend that much:
>
>$1 each:- http://store.yahoo.com/nexfan03/evcafan80bl.html
>
>Or, for quieter, ball bearing, $4.99 each:
>http://store.yahoo.com/directron/uc001btc.html
>http://store.yahoo.com/directron/80l1a.html


-- Air movers for avionics need characteristics
-- conducive to moving air against quite a bit
-- of back pressure. The relatively small diameter
-- hoses are probably too much for a computer cooling
-- fan that almost never has to move air though
-- tiny spaces.

-- Most of the avionics cooling fans I've seen
-- used centrifugal blowers or vane axial blowers.
-- If I were going to hammer something together
-- for avionics cooling, I'd start with a product
-- like
-- http://www.mpja.com/productview.asp?product=14495+FN

-- This critter draws 2A and is rated at 60 cfm
-- (at no pressure). You could build a plenum onto
-- its output snoot for attaching cooling hoses.

-- Bob . . .

=0A=0A=0A      




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