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Instrument module cooling/demisting

 
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rparigoris



Joined: 24 Nov 2009
Posts: 797

PostPosted: Mon Feb 08, 2010 11:06 am    Post subject: Instrument module cooling/demisting Reply with quote

Hi groupWe are thinking about mounting four baby 30mm cooling fans flush with the top surface of the instrument module. Two above comm and transponder and two above dynon D10A. Figure they would help get a little heat out from under panel and perhaps help a little with demisting. Each fan moves ~ 3CFM.Any comments appreciated.Ron Parigoris [quote][b]

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loboloda(at)execulink.com
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PostPosted: Mon Feb 08, 2010 1:17 pm    Post subject: Instrument module cooling/demisting Reply with quote

Hi Ron,
I doubt that you need that many, I've got just one small fan installed, don't know how much air it moves, but it does quite a good job of de-misting.

Dave C-FBZI �
On 8-Feb-10, at 2:01 PM, rparigor(at)suffolk.lib.ny.us (rparigor(at)suffolk.lib.ny.us) wrote:
[quote]Hi group
We are thinking about mounting four baby�30mm cooling fans flush with the top surface of the instrument module. Two above comm and transponder and two above dynon D10A. Figure they would help get a little heat out from under panel and perhaps help a little with demisting. Each fan moves ~ 3CFM.
Any comments appreciated.
Ron Parigoris
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rparigoris



Joined: 24 Nov 2009
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PostPosted: Mon Feb 08, 2010 2:11 pm    Post subject: Instrument module cooling/demisting Reply with quote

Hi Dave"I doubt that you need that many, I've got just one small fan installed, don't know how much air it moves, but it does quite a good job of de-misting."Thx. for the reply. What's the aprox square size of your fan you have installed? The ones I am thinking about are 30mm x 30mm (under 1+1/4" square).Ron Parigoris [quote][b]

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rparigoris



Joined: 24 Nov 2009
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PostPosted: Mon Feb 08, 2010 2:15 pm    Post subject: Instrument module cooling/demisting Reply with quote

Hi Dave"I doubt that you need that many, I've got just one small fan installed, don't know how much air it moves, but it does quite a good job of de-misting."Thx. for the reply. About what size square is your single fan? The ones I am interested in are 30mm square (less than 1+1/4").In addition to demisting, I want to keep some heat off of Becker Com and Transponder, and off Dynon D10A.Ron Parigoris [quote][b]

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budyerly(at)msn.com
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PostPosted: Mon Feb 08, 2010 2:47 pm    Post subject: Instrument module cooling/demisting Reply with quote

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Ron,
No problem with only using one each fan. D-10s need to stay below 120F so that should be fine. As for GPS antennas, in the 4 or 5 I have installed, it is best to fashion an aluminum piece shaped like a U for the active antenna to sit on glued right to the top of the inside of the panel. The antenna sits in the trough of the U and provides a nice out of the way place to stick it. All the Garmin, GRT, Blue Mountain and Anywhere Map units work better with that little piece of aluminum. That technique was recommended by my Garmin Distributor. It has always worked for me. Try it...Doesn't cost anything but a thin 4 inch piece of aluminum.

Bud Yerly
Custom Flight Creations
[quote] ---


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jimpuglise(at)comcast.net
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PostPosted: Mon Feb 08, 2010 3:22 pm    Post subject: Instrument module cooling/demisting Reply with quote

Ron-

I mounted my GPS antennas as Bud suggests but instead of aluminum, I wrapped a 2X4 with packaging tape and used it as a mold to make the brackets of BID. I made one about 6 inches long, cut it into two three inches or so each and floxed both to the inside of the instrument panel. I used one for the GPS antenna and the other for the satelliet radio antenna. I cut my coax to about 18 inches so I can easily remove the GPS and still leave everything plugged in and powered up.

Jim Puglise A-283

---


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mau11(at)free.fr
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PostPosted: Mon Feb 08, 2010 11:09 pm    Post subject: Instrument module cooling/demisting Reply with quote

Hi Ron if you have pictures of fan cooling installation I am interested.
Thanks


09-02-2010
mau11
De : rparigor
Date/heure : 08-02-2010 23:25:56
A : Europa
Cc :
Sujet : Re: Instrument module cooling/demisting

Hi Dave
"I doubt that you need that many, I've got just one small fan installed, don't know how much air it moves, but it does quite a good job of de-misting."
Thx. for the reply. What's the aprox square size of your fan you have installed? The ones I am thinking about are 30mm x 30mm (under 1+1/4" square).
Ron Parigoris
Quote:


[quote][b]


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mau11(at)free.fr
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PostPosted: Mon Feb 08, 2010 11:10 pm    Post subject: Instrument module cooling/demisting Reply with quote

Sorry Ron I omit pictures!


09-02-2010
mau11
De : rparigor
Date/heure : 08-02-2010 23:25:56
A : Europa
Cc :
Sujet : Re: Instrument module cooling/demisting

Hi Dave
"I doubt that you need that many, I've got just one small fan installed, don't know how much air it moves, but it does quite a good job of de-misting."
Thx. for the reply. What's the aprox square size of your fan you have installed? The ones I am thinking about are 30mm x 30mm (under 1+1/4" square).
Ron Parigoris
Quote:



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rparigoris



Joined: 24 Nov 2009
Posts: 797

PostPosted: Tue Feb 09, 2010 12:00 am    Post subject: Re: Instrument module cooling/demisting Reply with quote

Hi Mau11
"if you have pictures of fan cooling installation I am interested."
I have a few different fans on order from Newark and Mouser to fool with. I will post details and pics once I get it all figured out.
As far as GPS placement, we fooled tonight with reception and for certain having an aluminium backing on antenna makes for better reception (thanks Bud for suggesting reception is better with a groundplane). I found that specifications for antenna reception on Garmin 296 is in fact with a square 70CM groundplane installed. Anyway I am going to use the aluminium bracket that came with antenna, removed the suction cups and drilled 3 holes to make a 3 legged stool out of it. Then I screwed 3 drawer wood pull handles to the bracket (handles have metal inserts) and shaped to fit inside bottom of top port side of instrument module. Once I have my cooling fans installed I canl JB KWIK in place 3 wood standoffs for antenna mount. Once JB KWIK is cured (4 minutes) will put a flox/Aeropoxy/30 minute hardener fillet around wood standoffs.
BTW we tested GPS reception tonight. We covered antenna with fiberglass (both epoxy and whatever ester instrument module is made out of), plexiglass and firewall pheonelic stuff. It degrades performance a little, but even covered with all this stuff as long as a groundplane was below antenna, reception was a tad better compared to the finger sized antenna connected direct to 296.
Ron Parigoris


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davidjoyce(at)doctors.org
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PostPosted: Tue Feb 09, 2010 2:22 am    Post subject: Instrument module cooling/demisting Reply with quote

Ron, A single inexpensive fan mounted in the under surface of the shelf
(where it is out of sight above the passenger's legs), with a row of holes
under the windscreen on pilot's side, has worked well as both cooler &
demister for me. Regards, David Joyce, G-XSDJ
---


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g-iani(at)ntlworld.com
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PostPosted: Tue Feb 09, 2010 3:04 am    Post subject: Instrument module cooling/demisting Reply with quote

The attached is a view of the top of my panel.

The fan works well as a demister and removes any excess heat from the panel
The GPS aerial gets a very slightly better signal as it is not under the
panel
The mount on top is for the PCAS unit we have.

I hope this might give you some ideas. BTW I have repainted it since this
picture was taken.

Ian Rickard G-IANI XS Trigear, 280 hours
Europa Club Mods Rep
e-mail g-iani(at)ntlworld.com


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loboloda(at)execulink.com
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PostPosted: Tue Feb 09, 2010 2:04 pm    Post subject: Instrument module cooling/demisting Reply with quote

Hi Ron,
It was a 2" fan, very similar to Ian's in respect to size and location, intended for cooling, de-misting was a secondary consideration.

Dave
On 8-Feb-10, at 5:12 PM, rparigor(at)suffolk.lib.ny.us (rparigor(at)suffolk.lib.ny.us) wrote:
[quote]Hi Dave
"I doubt that you need that many, I've got just one small fan�installed, don't know how much air it moves, but it does quite a good job of de-misting."
Thx. for the reply. About what size square is your single fan? The ones I am interested in are 30mm square (less than 1+1/4").
In addition to demisting,�I want to keep some heat off of Becker Com and Transponder, and off Dynon D10A.
Ron Parigoris

Quote:

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