FLARM antenna mounts for ASG-29

On Monday, September 2, 2013 1:39:02 PM UTC-4, Richard wrote:
On Monday, September 2, 2013 6:13:15 AM UTC-7, Sean F (F2) wrote: I have seen some beautiful setups with nice antenna holders for the powerflarm brick. Where do you buy these or are they built by the owners? Any tips would be welcomed. Happy Labor Day! Sean Sean, Some other antenna options that are cleaner and work. I believe the 2.3" will fit in the 29. Measure the height available, if you can fit the 3.4 use it. They also have a 18" cable length so less loss. http://www.craggyaero.com/cables_&_antennas.htm Richard www.craggyaero.com

There are photos on the ASW-27 group site showing PF installation using above antenna.
UH

I have had really good results building mounts from plexiglass. You can buy inexpensive 1/8" sheets at any hardware store and easily cut it with a fine jigsaw. With a heat gun you can bend, twist and form it to a variety of shapes and it remains clear and strong once it cools.

May be worth trying out for your needs.



On Monday, September 2, 2013 3:09:57 PM UTC-7, wrote:
On Monday, September 2, 2013 1:39:02 PM UTC-4, Richard wrote:

On Monday, September 2, 2013 6:13:15 AM UTC-7, Sean F (F2) wrote: I have seen some beautiful setups with nice antenna holders for the powerflarm brick. Where do you buy these or are they built by the owners? Any tips would be welcomed. Happy Labor Day! Sean Sean, Some other antenna options that are cleaner and work. I believe the 2.3" will fit in the 29. Measure the height available, if you can fit the 3.4 use it. They also have a 18" cable length so less loss. http://www.craggyaero.com/cables_&_antennas.htm Richard www.craggyaero.com



There are photos on the ASW-27 group site showing PF installation using above antenna.

UH

Consider the "what if" if you have to jettison your canopy. You don't want the antenna wires restricting the canopy ejection during an emergency.
Craig

It's doubtful those flimsy cables/mounts would retain a canopy against the
relative wind.


"Craig R." wrote in message
...
Consider the "what if" if you have to jettison your canopy. You don't want
the antenna wires restricting the canopy ejection during an emergency.
Craig

Dan, some of the top pilots in the world flying 29's will disagree with you and have taken precautions for their antenna installation.


On Thursday, September 5, 2013 7:02:51 AM UTC-7, Dan Marotta wrote:
It's doubtful those flimsy cables/mounts would retain a canopy against the
relative wind.

Oh? Have any of them attempted to jettison their canopies in flight and had
it remain attached by that coax cable and/or mount?

I only expressed doubts due to the forces expected by the huge drag of the
jettisoned canopy. I can't control what "some of the top pilots in the
world" think or do. It's up to them to decide for themselves. I stand by
my doubt.

BTW, there is absolutely NOTHING connected to my canopy. It will float
freely away should I pull the handle.


"Craig R." wrote in message
...
Dan, some of the top pilots in the world flying 29's will disagree with
you and have taken precautions for their antenna installation.


On Thursday, September 5, 2013 7:02:51 AM UTC-7, Dan Marotta wrote:
It's doubtful those flimsy cables/mounts would retain a canopy against the
relative wind.

There was a fatality few years ago in Europe where the pilot did not successfully bail out after a midair where the PDA wires connected to the canopy where suspected as contributing factor.

Ramy

Currently my flarm antenna is mounted to where the cable would indeed
interfere in case of canopy jettison.

Fixing this is at the very top of my to do list for sure, I believe if you
grabbed that antenna wire with your bare hands and pulled it may take more force to break than what you may think.

Suspected...? Show me the pictures and/or official report. Was the canopy
still tied to the wreck as found on the ground? I just don't believe it
unless the cables used were much heavier than the normal PDA cables and were
retained via adel clamps or some such. In all likelihood, connectors would
simply separate or the wires would pull out of the connectors, or the cables
would simply break.

Accident reports, it seems, often blame some unproveable happening and, if
the pilot doesn't survive, he usually gets more than his fair share of the
blame. My objection here is simply to the blind belief that something bad
will happen if you don't do what the "top pilots in the world" do.

Did you note in my previous reply that there is NOTHING connecting my canopy
to the fuselage other than the retention hook? That's not because I'm
afraid of bad things, it's simply for convenience.

I helped a local pilot with her FLARM installation on her new -29 and she
had the antennae mounted to the glare shield. To me the mounts looked
flimsy and would easily separate should the canopy be jettisoned in flight.
The down side was the extra long cable lengths needed to remove the canopy
and set it on the ground so that she could disconnect the cables. Same for
reinstallation of the canopy.

In writing this it occurs to me that those long cables would allow the
difference in velocity of the canopy and airframe to increase sufficiently
to easily snap the cables or mounts.


"Ramy" wrote in message
...
There was a fatality few years ago in Europe where the pilot did not
successfully bail out after a midair where the PDA wires connected to the
canopy where suspected as contributing factor.

Ramy