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rv10free2fly(at)yahoo.com
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 Posted: Sat Dec 29, 2012 1:04 pm Post subject: Overhead Console Final Installation & TCAS Antenna Installat |
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For those that have installed an overhead console, at what point should the console finally be installed (i.e. should the door hinges, gas strut brackets and any antenna mounts have already been installed prior to the final installation of the console).
Additionally I need to install my TCAS antenna on the upper rear section of the cabin top in as near to the level flying attitude as possible. How close is the aircraft to its level flying attitude when it's sitting on the ground on its landing gear. Any angle measurements (i.e. the variation between level flight and when on the ground) would be greatly appreciated please.
For those that have installed the Garmin GTS-800 TCAS antenna on the cabin top, did you use conductive paint for your ground plane or an alternative method please?
Warm regards & Happy New Year to all,
Patrick Pulis
Adelaide, South Australia
# 40299
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woxofswa
Joined: 12 Aug 2008
Posts: 349
Location: AZ
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| Posted: Sat Dec 29, 2012 3:49 pm Post subject: Re: Overhead Console Final Installation & TCAS Antenna I |
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I installed my console (Aerosport) with the top upside down on my work table. I had no issues installing the top or fitting the doors afterwards.
Good luck.
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Myron Nelson
Mesa, AZ
Flew May 10 2014 |
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Sat Dec 29, 2012 4:39 pm Post subject: Overhead Console Final Installation & TCAS Antenna Installat |
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It depends whether you can access your intended antenna locations with the overhead in place or not. If they are okay where the two removable panels are, no problem. Otherwise you need to mount the items first.
On Sat, Dec 29, 2012 at 2:06 PM, Patrick Pulis <rv10free2fly(at)yahoo.com.au (rv10free2fly(at)yahoo.com.au)> wrote:
[quote] --> RV10-List message posted by: Patrick Pulis <rv10free2fly(at)yahoo.com.au (rv10free2fly(at)yahoo.com.au)>
For those that have installed an overhead console, at what point should the console finally be installed (i.e. should the door hinges, gas strut brackets and any antenna mounts have already been installed prior to the final installation of the console).
Additionally I need to install my TCAS antenna on the upper rear section of the cabin top in as near to the level flying attitude as possible. How close is the aircraft to its level flying attitude when it's sitting on the ground on its landing gear. Any angle measurements (i.e. the variation between level flight and when on the ground) would be greatly appreciated please.
For those that have installed the Garmin GTS-800 TCAS antenna on the cabin top, did you use conductive paint for your ground plane or an alternative method please?
Warm regards & Happy New Year to all,
Patrick Pulis
Adelaide, South Australia
# 40299
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Kelly McMullen
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bill.peyton
Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO
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| Posted: Sun Dec 30, 2012 6:01 am Post subject: Re: Overhead Console Final Installation & TCAS Antenna I |
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The bottom of the door frame is close to level flight. For the cabin cover the closest area to level flight is directly between the doors. Unfortunately, Vans does not want you mounting anything there from a roll-over strutural integrity. This is where I put both my GPS antennas. There are wood stringer stifferners buried in the glass that run fore and aft. If you mount the overhead you won't be able to get to the coax unless it is mounted above one of the removable panels. Ground planes are not required for GPS antennas to function, I am not sure about TCAS. I believe Sean (strasnuts) has the same system you are inquiring about.
I would/did perform a preliminary attachment of the cabin cover using all hardware and clecos before I would install the overhead. I also fit the doors and finished the trimming and build up around the door frame and established the Mcmaster Carr door seal gaps set. I would also get the holes drilled for the center support and for the door strut., the windows opening cut out, etc. It is just easier and has less of a chance of damaging the overhead and closing yourself in. You will be installing and removing the cabin cover numerous times before you are happy with the fit. The final body work can be done after the doors fit and you get the console installed, I also painted prior to final installation.
Bill
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Bill
WA0SYV
Aviation Partners, LLC |
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billz
Joined: 08 Jul 2009
Posts: 26
Location: Clinton, New York
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| Posted: Sun Dec 30, 2012 9:30 am Post subject: Re: Overhead Console Final Installation & TCAS Antenna I |
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I've just completed antenna installations on my cabin top. After lengthy discussions with Folks who have installed the GTS800 as well as others, concerning the various GPS antennas, this is what I decided to do.
1. The GPS antennas do not need an additional ground plane. The base of the antenna provides an adequate ground plane. However, I did run some #10 wire between the antenna mounting fasteners and to my common ground point (on the firewall), to provide lightning protection.
2. I have the Garmin GPS (WAAS) antenna in front with the combined (experimental)GPS/WAAS antenna behind it. I'm planning to run these three wires forward, through the windshield support post.
3. I decided to mount the GTS 800 antenna behind the doors. After seeing the installation on the Cessna Corvalis at Oshkosh, it seemed like a good place. The 10 deg. angle exceeds the recommended angle (5 deg.), but shouldn't be a major performance issue. It seems to work for Cessna. This also provides a short cable run from the antenna to the GTS 800 processor, mounted behind the baggage compartment. I installed and 18 in diameter ground plane under the GTS 800 antenna. I used aluminum window screen. The antenna is bolted to a mounting plate (with nutplates). The mounting plate is bolted (and epoxied) to the cabin top and I used conductive paste between the screen and the mounting plate.
Attached are some pictures that should provide more insight into the process. BTW, the ground plane screen is covered with epoxy to fair it into the cabin top. The picture shows the first of many coats of epoxy.
I hope this is a help with your airplane.
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