Today's Message Index:
----------------------
1. 08:43 AM - Re: symmetrical panel and backup (Rocketman1988)
2. 11:35 AM - NAV splitter (rvdave)
3. 11:49 AM - Re: NAV splitter (Bob Turner)
4. 12:37 PM - Re: Re: NAV splitter (Carl Froehlich)
5. 12:43 PM - Re: NAV splitter (Jesse Saint)
6. 12:56 PM - Re: NAV splitter (rvdave)
7. 01:26 PM - Wheel balancer (Carl Froehlich)
8. 01:55 PM - Re: Re: symmetrical panel and backup (Kelly McMullen)
9. 02:02 PM - Re: Re: NAV splitter (Kelly McMullen)
10. 02:06 PM - Re: NAV splitter (Bob Turner)
Message 1
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| Subject: | Re: symmetrical panel and backup |
"... don't think I need the same level of redundancy in my RV-10, but I really
do want something like the GRT mini..."
Exactly. I am current;y looking at an AFS EFIS with the GRT Mini backup. Seems
like a good compromise. If the weather is so bad that I need triple redundant
systems, then I will probably just delay a bit...or go on the airlines...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442808#442808
Message 2
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The quick build kit I have, the previous builder installed two Archer NAV antennae
one in each wingtip I'm assuming I can combine these signals using a combiner
or reverse splitter . Will I be fighting a ghosting/corrupting signal
using two signal sources?
--------
Dave Ford
RV6 for sale
RV10 building
Cadillac, MI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442813#442813
Message 3
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| Subject: | Re: NAV splitter |
This absolutely does not work.
You will make a directional antenna which works very well in some directions and
very poorly in others. Which direction depends on the exact lengths of the coax.
One Archer works just fine, with some reduction in sensitivity when looking thru
the airframe direction.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442814#442814
Message 4
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| Subject: | Re: NAV splitter |
Nope - will not work. The impedance match will be all wrong.
Use one antenna for NAV, keep the other antenna as a backup comm - say for a handheld.
It would work a boat load better than the handheld's rubber ducky antenna.
I made this antenna out of same scrap aluminum and small pieces of fiberglass.
I used an antenna tester to tune (most of these antennas are so far out that
just slapping one in tends to produce disappointing results). 100nmi plus VOR
range at altitude.
Carl
> On May 30, 2015, at 2:45 PM, Bob Turner <bobturner@alum.rpi.edu> wrote:
>
>
> This absolutely does not work.
> You will make a directional antenna which works very well in some directions
and very poorly in others. Which direction depends on the exact lengths of the
coax.
> One Archer works just fine, with some reduction in sensitivity when looking thru
the airframe direction.
>
> --------
> Bob Turner
> RV-10 QB
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=442814#442814
>
>
>
The quick build kit I have, the previous builder installed two Archer NAV antennae
one in each wingtip I'm assuming I can combine these signals using a combiner
or reverse splitter . Will I be fighting a ghosting/corrupting signal
using two signal sources?
--------
Dave Ford
RV6 for sale
RV10 building
Cadillac, MI
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Re: NAV splitter |
You can use one to Fe achieve Nav radio if you have two, but you don't want to
try to combine them.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse@saintaviation.com
Sent from my iPad
> On May 30, 2015, at 1:31 PM, rvdave <rv610dave@gmail.com> wrote:
>
>
> The quick build kit I have, the previous builder installed two Archer NAV antennae
one in each wingtip I'm assuming I can combine these signals using a
combiner or reverse splitter . Will I be fighting a ghosting/corrupting signal
using two signal sources?
>
> --------
> Dave Ford
> RV6 for sale
> RV10 building
> Cadillac, MI
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=442813#442813
>
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: NAV splitter |
Exactly what I need to know, thanks.
--------
Dave Ford
RV6 for sale
RV10 building
Cadillac, MI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442818#442818
Message 7
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The RV-10 is down for inspection, right wing replacement and to fix an
annoying nose gear shimmy. Reading the achieves it was clear that wheel
balancing is a major step to solving nose gear shimmy. I already have
the
solid nose gear axle mod.
Finding a wheel balancer proved hard outside of dropping $400 for one
from
Aircraft Tool Supply. Tom Doran made this one with some very nice
bearings
he had laying around and milled Delrin spacers (he is magic with a mill
machine). It is amazingly sensitive. I tried balancing the nose wheel
in
the past with just a horizontal rod to find the heavy spot. Using this
rig
I found my previous attempt to be way off. I ended up using six =BC oz
stick
on weights to get the nose wheel to balance. The mains used about three
weights each.
Carl
Message 8
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| Subject: | Re: symmetrical panel and backup |
What you choose for backup may be dependent on whether your pitot/static
lines run to ADAHRS in rear of plane (dynon Skyview) or if it is at the
instrument panel. The GRT mini requires hook up to those lines, and you
get benefit of actual airspeed and altitude. Dynon D1/D2 needs no
hookup, but only gives you GPS derived ground speed and GPS track and
GPS altitude.
All better than nothing, but not quite as good as barometric and pitot
derived numbers.
Huge change in redundancy from when I was flying in non-radar areas with
venturi powered gyros and electric turn coordinator, with single
nav/com/ils and single ADF.
That gave some blood pressure rise when the venturis iced up. Key word
is when, not if. Fortunately the old AN gyros would operate down to less
than 1" of vacuum, so you got warning when the vacuum started trending
below 4"
All with one alternator and one battery for electrons.
On 5/30/2015 8:39 AM, Rocketman1988 wrote:
>
> "... don't think I need the same level of redundancy in my RV-10, but I really
do want something like the GRT mini..."
>
> Exactly. I am current;y looking at an AFS EFIS with the GRT Mini backup. Seems
like a good compromise. If the weather is so bad that I need triple redundant
systems, then I will probably just delay a bit...or go on the airlines...
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=442808#442808
>
>
Message 9
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| Subject: | Re: NAV splitter |
I have installed two, because I have two nav/coms. If you only have one,
perhaps with an ILS, you could use the second one for the GS. As others
have said, you can't combine, and if you split for GS or second nav you
lose about 50% of the signal strength.
On 5/30/2015 12:53 PM, rvdave wrote:
>
> Exactly what I need to know, thanks.
>
> --------
> Dave Ford
> RV6 for sale
> RV10 building
> Cadillac, MI
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=442818#442818
>
>
Message 10
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| Subject: | Re: NAV splitter |
If your nav radio has separate inputs for vor and GS you can hook up one antenna
to each and save tbe cost of a splitter.
If you want to use it for a com radio you'll want to bend it up as much as possible,
and trim about 10% of the length off the end. It won't be great but as Carl
said it's better than the rubber duckie.
For techies: the impedance match is fine, the issue is that depending on the direction
of the signal, there will be phase mis-matches. When the phase difference
is 180 degrees you'll get no signal.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442822#442822
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