Today's Message Index:
----------------------
1. 05:04 AM - Re: voltage monitoring (Rodney Dunham)
2. 05:18 AM - Re: VFR Lighting Requirements INNOCENT GLOBAL 0.0000 1.000... (BobsV35B@aol.com)
3. 05:41 AM - Heat or noise problems (Carlos Trigo)
4. 09:27 AM - Alternators Breakers (bob rundle)
5. 09:42 AM - Starter Troubleshooting (Jerry2DT@aol.com)
6. 09:53 AM - Re: Heat or noise problems (John Schroeder)
7. 10:07 AM - Re: Alternators Breakers (Hinde, Frank George (Corvallis))
8. 10:28 AM - Re: Heat or noise problems (Hinde, Frank George (Corvallis))
9. 11:59 AM - Re: Heat or noise problems (Lynn Riggs)
10. 01:14 PM - Re: Alternators Breakers (John Schroeder)
11. 02:36 PM - Re: VFR Lighting Requirements INNOCENT GLOBAL (Phil Birkelbach)
12. 07:35 PM - voltage monitoring (bob noffs)
13. 11:31 PM - Re: VFR Lighting Requirements INNOCENT (Guy Buchanan)
Message 1
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Subject: | Re: voltage monitoring |
--> AeroElectric-List message posted by: "Rodney Dunham" <rdunhamtn@hotmail.com>
Fellow choir members,
The radio in a 14V system is required by RTCA DO-160 to be able to withstand
20 volts for 1 second, 40 volts for 100 milliseconds, and 300-volts for 100
microseconds.
While I will grant you that the PM alternators in our Rotax and Jabiru
engines are probably not cabable of generating 300 volts, they are cabable
of producing over 70 volts without a functional VR. By the time the red
light has illuminated, more than 100 milliseconds is long past and by the
time you even read the EIS screen to see what has set off the one eyed
monster, 1 second is also long past. So your opportunity to DO something to
prevent damage is also long past.
That's the beauty of Bob's OV protection kit. It detects the impending OV,
takes the alternator off line before it can fully develop and tells you what
it's done by showing its white pullable circuit breaker collar. It's
beautiful. It protects your avionics. It simplifies your panel by
eliminating a switch. And most important of all, it requires no pilot
intervention at all!
IMHO, we cannot react quickly enough in the normal cockpit environment to do
without this particular automated device.
Rodney in Tennessee
Message 2
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Subject: | Re: VFR Lighting Requirements INNOCENT GLOBAL 0.0000 |
1.000...
--> AeroElectric-List message posted by: BobsV35B@aol.com
In a message dated 10/18/2005 1:58:02 A.M. Central Standard Time,
bnn@nethere.com writes:
All,
Currently my day VFR Kitfox has no lights. It appears I am
required to run an anti-collision light at a minimum. (FAR 91.205b11) Does
this sound correct? Does anyone have a recommendation for a minimalist
anti-collision light system?
Thank you in advance,
Good Morning Guy,
I may be stepping into an area about which I know nothing, but isn't your
Kit Fox an experimental airplane?
The way I read the FAR quoted is that those regulations apply to Standard
Category Airplanes.
Is there something in the experimental regulations that requires you to
comply with the provisions noted?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
Message 3
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Received-SPF: softfail (mta9: domain of transitioning trigo@mail.telepac.pt does
not designate 85.138.30.221 as permitted sender) receiver=mta9; client_ip=85.138.30.221;
envelope-from=trigo@mail.telepac.pt;
Subject: | Heat or noise problems |
--> AeroElectric-List message posted by: "Carlos Trigo" <trigo@mail.telepac.pt>
In my RV-9A with a Subaru engine, I need to put the 2 batteries behind the
baggage compartment, thus having to install four 6AWG wires from the
batteries to the firewall. (please no discussion abour this).
Are there any heat problems if I put all the four wires paralel, in the same
conduit ?
And what about noise problems ?
Carlos
Message 4
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Subject: | Alternators Breakers |
--> AeroElectric-List message posted by: "bob rundle" <bobrundle2@hotmail.com>
I'm following Z-13 with single battery and dual alternator. My question is
this:
I have used all fuses for my panel which can be accessed easily from the
right side under the panel. Why are the MAIN ALT and AUX ALT circuit
breakers used in the panel instead of fuses as well? Why would I need
access to them? Can they be fuses?
Cheers,
Bob R
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
Message 5
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Subject: | Starter Troubleshooting |
--> AeroElectric-List message posted by: Jerry2DT@aol.com
Folks,
In the course of researching starter problems, I came across this fine
troubleshoot guide from Sky-Tec. Wish I had seen it before delving into same.
I'm
printing it out and inserting into wirebook of current project...
_http://www.skytecair.com/images/Troubleshooting%20Diagram_5.0.pdf_
(http://www.skytecair.com/images/Troubleshooting%20Diagram_5.0.pdf)
BTW, support at Sky-Tec is first class.
Jerry Cochran
Wilsonville, OR
Message 6
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Subject: | Re: Heat or noise problems |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Carlos-
There may or may not be a heat problem; depending on the length,
resistance of the #6 wire and the amps that they will carry. I believe you
can do the calculations from a page in Bob Nuckolls' book. He also has a
"comic book" about this. I have a copy of the latter, if you can't find it
on his web site. I also have an Excel-based spreadsheet/calculator if you
need it. If the wires will be in the same conduit, the "bundle" figures
from the charts will have to be used.
Cheers,
John Schroeder
> In my RV-9A with a Subaru engine, I need to put the 2 batteries behind
> the baggage compartment, thus having to install four > 6AWG wires
> from the batteries to the firewall. (please no discussion abour this).
> Are there any heat problems if I put all the four > wires paralel, in
> the same conduit ?
> And what about noise problems ?
>
> Carlos
Message 7
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Subject: | Alternators Breakers |
--> AeroElectric-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
My personal conclusion was that in a dual alt setup like mine I decided
fuses were just fine.
I have an IR main alt and I use the Perilion OV module and contactor
approach to OV situations....I also wired the field wire through the
panel switch...Thus I have a double pole switch that turns both the OV
and field circuit on/off.
This also has a push button reset.
The second alt (an SD-8) also has a dpSt switch but I take the main
current from the SD-8 thru one pole and the crowbar OV thru the other as
it would normally be 10 amps or less and oly turned on if the main alt
get shutdown.
Anyway that's my approach...All of the above thru fuses.
fwiw
Frank
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of bob
rundle
Subject: AeroElectric-List: Alternators Breakers
--> AeroElectric-List message posted by: "bob rundle"
--> <bobrundle2@hotmail.com>
I'm following Z-13 with single battery and dual alternator. My question
is
this:
I have used all fuses for my panel which can be accessed easily from the
right side under the panel. Why are the MAIN ALT and AUX ALT circuit
breakers used in the panel instead of fuses as well? Why would I need
access to them? Can they be fuses?
Cheers,
Bob R
On the road to retirement? Check out MSN Life Events for advice on how
to get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
Message 8
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Subject: | Heat or noise problems |
--> AeroElectric-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
I really don't think heat will be the problem. Remember the large
current flow will only be for very short durations while cranking the
starter...Really not much time for it to get hot.
What do you expect your instrument loads to be assuming these are coming
directly from the battery. I would check the max voltage drop calcs
based on these full load amps but not the intermttent starter amps.
As an example I have a Zenair Zodiac with an 1800CC Soob motor and the
17AH battery behind the seats...I have a single 6Ga wire running from
the batt to the firewall and use a local ground from the battery to the
airframe..I.e the airframe is the battery ground path....Shock horror!
The cable is bundle up with other cables and glued under the logeron
with silicone. The istruments are mode C VFR with a full compliment of
lights.
Works just fine...But I do have an awful noise on the radio which I
assume to poor grounding of the RG58 coax...I don't know if this ground
ath setup is contributing to this as I haven't investigated it
yet....Seems to improve if I turn a lot of lights on...Hmmm...I wonder?
Good luck
Frank
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John
Schroeder
Subject: Re: AeroElectric-List: Heat or noise problems
--> AeroElectric-List message posted by: "John Schroeder"
--> <jschroeder@perigee.net>
Carlos-
There may or may not be a heat problem; depending on the length,
resistance of the #6 wire and the amps that they will carry. I believe
you can do the calculations from a page in Bob Nuckolls' book. He also
has a "comic book" about this. I have a copy of the latter, if you can't
find it on his web site. I also have an Excel-based
spreadsheet/calculator if you need it. If the wires will be in the same
conduit, the "bundle" figures from the charts will have to be used.
Cheers,
John Schroeder
> In my RV-9A with a Subaru engine, I need to put the 2 batteries behind
> the baggage compartment, thus having to install four > 6AWG wires
> from the batteries to the firewall. (please no discussion abour this).
> Are there any heat problems if I put all the four > wires paralel, in
> the same conduit ?
> And what about noise problems ?
>
> Carlos
Message 9
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Subject: | Re: Heat or noise problems |
--> AeroElectric-List message posted by: Lynn Riggs <riggs_la@yahoo.com>
Carlos,
In Bob's book he recommends using 4AWG for short runs and 2AWG for longer runs.
Carlos Trigo <trigo@mail.telepac.pt> wrote:
--> AeroElectric-List message posted by: "Carlos Trigo"
In my RV-9A with a Subaru engine, I need to put the 2 batteries behind the
baggage compartment, thus having to install four 6AWG wires from the
batteries to the firewall. (please no discussion abour this).
Are there any heat problems if I put all the four wires paralel, in the same
conduit ?
And what about noise problems ?
Carlos
Lynn A. Riggs
riggs_la@yahoo.com
St. Paul, MN
BH #656 Kit #22
http://home.comcast.net/~lariggs/wsb/html/view.cgi-home.html-.html
---------------------------------
Message 10
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Subject: | Re: Alternators Breakers |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Bob R -
Bob Nuckols recommends using the circuit breakers because the ov
protection can have some nuisance trips. They are a whole lot easier to
push in than replacing a fuse while leaning over to get to the fuse panel
in your airplane and all of this while in flight.
Hope this helps,
John Schroeder
On Tue, 18 Oct 2005 16:26:06 +0000, bob rundle <bobrundle2@hotmail.com>
wrote:
> Why are the MAIN ALT and AUX ALT circuit breakers used in the panel
> instead of fuses as well? Why would I need access to > them? Can
> they be fuses?
--
Message 11
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Subject: | Re: VFR Lighting Requirements INNOCENT GLOBAL |
0.0000 1.000...
--> AeroElectric-List message posted by: Phil Birkelbach <phil@petrasoft.net>
The regulations say that you have to abide by your operating limitations
and, if memory serves, the operating limitations will say that you have
to comply with 91.205.
To answer the question, I think that a single strobe on the top of the
vertical stabilizer would do it. You could also install one of those
ugly cessna rotating beacons but I think a simple little strobe
qualifies. You have to be able to see the AC light from 360 degrees
around the airplane IIRC.
You could buy one of these babies...
http://www.strobe.com/products.asp?id=5&view=product
...and one of these...
http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1129671072-166-474&browse=lighting&product=a625light
...and you'd have it made. There are probably other solutions but this
is the first that came to mind. I used a Nova power supply on mine and
it works great.
Godspeed,
Phil Birkelbach - Houston Texas
RV-7 N727WB - Phase I
http://www.myrv7.com
BobsV35B@aol.com wrote:
>--> AeroElectric-List message posted by: BobsV35B@aol.com
>
>
>In a message dated 10/18/2005 1:58:02 A.M. Central Standard Time,
>bnn@nethere.com writes:
>
>All,
>Currently my day VFR Kitfox has no lights. It appears I am
>required to run an anti-collision light at a minimum. (FAR 91.205b11) Does
>this sound correct? Does anyone have a recommendation for a minimalist
>anti-collision light system?
>
>Thank you in advance,
>
>
>Good Morning Guy,
>
>I may be stepping into an area about which I know nothing, but isn't your
>Kit Fox an experimental airplane?
>
>The way I read the FAR quoted is that those regulations apply to Standard
>Category Airplanes.
>
>Is there something in the experimental regulations that requires you to
>comply with the provisions noted?
>
>Happy Skies,
>
>Old Bob
>AKA
>Bob Siegfried
>Ancient Aviator
>Stearman N3977A
>Brookeridge Air Park LL22
>Downers Grove, IL 60516
>630 985-8503
>
>
>
>
Message 12
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Subject: | voltage monitoring |
--> AeroElectric-List message posted by: "bob noffs" <icubob@newnorth.net>
hi all,
sounds like the crowar is a necessary item, even with voltage monitoring. i will
include it in my plans. thanks to all who responded.
bob noffs woodruff, wi
Message 13
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Subject: | Re: VFR Lighting Requirements INNOCENT |
GLOBAL 0.0000 1.000...
--> AeroElectric-List message posted by: Guy Buchanan <bnn@nethere.com> GLOBAL
0.0000 1.000...
At 02:34 PM 10/18/2005, you wrote:
>The regulations say that you have to abide by your operating limitations
>and, if memory serves, the operating limitations will say that you have
>to comply with 91.205.
Thanks Phil,
I called the San Diego FSDO today and had an interesting
conversation with them. Apparently this is still an open issue, as there
are a boat load of aircraft out there without electrical systems. They're
going to "discuss" it and get back to me and I'll pass on what they say.
On a more humorous note, I asked about the new AC 20-27
requirement that the "Passenger Warning" be in 3/8" high type. They said
this was absolutely true and a result of previous notices shrinking to the
point of invisibility. You can't imagine how much trouble I'm having
finding room for this message in my Kitfox! (It has to be in "plain sight"
for the passenger.)
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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