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11-03-2007, 06:22 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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GPS antenna mounting under cowl?
I'd love to hear opinions or see pics of GPS antenna mounts under the cowl. Thanks guys (and you know who  ).
__________________
Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son
RV-4 99% built  and sold 
Rag and tube project well under way
paid =VAF= dues through June 2013
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11-03-2007, 08:29 PM
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Join Date: Jan 2005
Location: San Mateo, CA
Posts: 1,419
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Quote:
Originally Posted by szicree
I'd love to hear opinions or see pics of GPS antenna mounts under the cowl. Thanks guys (and you know who ). |
I (like many others) copied Dan's install. Working great with my GNS-430 after a few years of flying. |
11-03-2007, 08:54 PM
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Join Date: Oct 2005
Posts: 506
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Same here, but I made mine wider to accommodate two antennas. If you're using the stock hinge-pin method of cowl attachment on top, make sure to leave room to the the pins in and out past the antennas.
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11-03-2007, 09:13 PM
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Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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Jury is out
On how well a WAAS antenna will work in that location however.
Frank
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05-08-2008, 12:17 PM
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Join Date: Jan 2005
Location: Coshocton, Ohio
Posts: 315
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Quote:
Originally Posted by frankh
Jury is out On how well a WAAS antenna will work in that location however.
Frank
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Getting ready to mount one for a 430W.....
Is that jury still out?
__________________
Dave Durakovich
CFIG, AGI, COMM SEL, VAF# 133
RV-4, N666PR, Finished (Well, at least flying)!
RV-6 - Adopted an orphan!
Detroit, MI
"If you think you can do a thing or think you can't do a thing, you're right."
Henry Ford
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05-08-2008, 01:21 PM
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Join Date: Oct 2007
Location: Alviso, CA
Posts: 405
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Makes me nervus
When I bought my airplane it had one under the cowl. Seems like an elegant solution, but I started worrying after thinking about it a while.
Although they may hold up well, those antenna are not designed for the heat and thermal cycling of the engine area. I feel safer with it inside the cockpit.
I have one double side taped to the top of the glare shield, just like my weather antenna. Sky access is at least as good as the under cowl solution.
The under cowl antenna is still there, but I don't use it.
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Steve Brown
N598SD - RV9A second owner
O-320, 9:1 pistons, Catto 3 blade
KRHV - Reid Hillview airport, San Jose, CA
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05-08-2008, 01:27 PM
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Join Date: Mar 2005
Posts: 397
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Had mine for 500+ hrs
and still works great. Regarding the heat issue, have you ever tried to put your hand on an antenna mounted on the glare shield when it has been sitting in the sun for a few hours? Ouch! I don't think it gets much hotter under the cowl with all the airflow going thru there.
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Rusty "Rooster" Williams
N357RV RV-7A Tip Up (flying and Painted!) - 1560+ hrs.
Superior XP-360, carbureted, Hartzell 74" Blended Airfoil Prop
Grand Prairie, TX
KGPM
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05-09-2008, 06:25 AM
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Join Date: Oct 2007
Location: Alviso, CA
Posts: 405
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I probably worry too much
Quote:
Originally Posted by hecilopter
...I don't think it gets much hotter under the cowl with all the airflow going thru there.
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Probably true.
I'm used to thinking of the reliability of electronics in terms of thousands or tens of thousands of hours. That thinking doesn't necessarily apply here.
Still, after your comment I'll probably cover both antenna with something white
__________________
Steve Brown
N598SD - RV9A second owner
O-320, 9:1 pistons, Catto 3 blade
KRHV - Reid Hillview airport, San Jose, CA
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