Today's Message Index:
----------------------
1. 04:06 AM - Press to Test (Gerry Holland)
2. 04:44 AM - Re: 12 Volt DC Bench Power Supply (Neil K Clayton)
3. 06:27 AM - Ameri-King AK-450 ELT - Remote Battery Included? (Tim Olson)
4. 09:10 AM - Dual Alternator Use (Mark Neubauer)
5. 10:27 AM - RE; 12 Volt DC Bench Power Supply (J. Mcculley)
6. 10:27 AM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Bob C.)
7. 02:24 PM - Re:Engine Cowl Temperatures (George Braly)
8. 02:35 PM - Re: Certified Aircraft Rewiring (Bob McDevitt)
9. 02:48 PM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Bikcrzy@aol.com)
10. 03:21 PM - Re: Certified Aircraft Rewiring (Kevin Horton)
11. 03:29 PM - Re: Airline style 2-pin 12v power outlet jacks... (Greg Campbell)
12. 03:40 PM - Re: Certified Aircraft Rewiring (BobsV35B@aol.com)
13. 03:48 PM - Re: 12 Volt DC Bench Power Supply (John Schroeder)
14. 03:55 PM - Re: Engine Cowl Temperatures (Brian Lloyd)
15. 03:55 PM - Re: 12 Volt DC Bench Power Supply (Fiveonepw@aol.com)
16. 04:27 PM - Re: Dual Alternator Use (Bruce Gray)
17. 04:28 PM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Ken)
18. 04:28 PM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Larry McFarland)
19. 04:55 PM - Re: Engine Cowl Temperatures (Alex Peterson)
20. 04:56 PM - Re: Hall effect current sensor location (Brinker)
21. 05:14 PM - Re: Dual Alternator Use (Robert L. Nuckolls, III)
22. 05:14 PM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Chris & Kellie Hand)
23. 05:27 PM - Re: Hall effect current sensor location (Robert L. Nuckolls, III)
24. 05:27 PM - Re: Press to Test (Robert L. Nuckolls, III)
25. 05:29 PM - Re: Hall effect current sensor location (Robert L. Nuckolls, III)
26. 05:32 PM - Re:Engine Cowl Temperatures (Robert L. Nuckolls, III)
27. 07:27 PM - Re: Re: Airline style 2-pin 12v power outlet jacks... (John Schroeder)
28. 08:18 PM - Re: Ameri-King AK-450 ELT - Remote Battery Included? (Tim Olson)
29. 08:30 PM - Re: Dual Alternator Use (Robert L. Nuckolls, III)
Message 1
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--> AeroElectric-List message posted by: Gerry Holland <gholland@gemini-resourcing.com>
Hi!
I'm trying to wire in a Oak MS25041-8 Press to Test Sx. Unfortunately it's
during a severe bout of multiple senior moments!
Example can be found at http://tinyurl.com/crxvy
My aim is to press this test Sx and illuminate a panel of Annunciator lights
that are isolated by diodes from each condition feed and check bulb state
prior to start up checks and general switch on. The Sx has 3 connections and
the capability to illuminate the press button on actuation. I can not get it
to illuminate Annunciator Panel.
Any ideas. My thoughts are at best confused now but with the bulb as part of
the circuit is their a resistance load isolating power.
Any help gratefully received. Medication is the next step!
Regards
Gerry
Message 2
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| Subject: | Re: 12 Volt DC Bench Power Supply |
--> AeroElectric-List message posted by: Neil K Clayton <harvey4@earthlink.net>
Jim.....by coincidence, yesterday I was closing a Nextel store (they
merged with Sprint and don't need two retail stores so close
together) and in the course of clearing out the "back room" I found
about 5 bench power supplies. I took one for myself and gave one to a
builder friend who I saw last evening. I'm pretty sure the others are
in the "pile" that resulted. Later today I'll go thorough and see if
I can find them. If I can, you're welcome to one.
I'll mail you later and let you know what I find.
Neil
At 09:50 PM 2/3/2006, you wrote:
>--> AeroElectric-List message posted by: "J. Mcculley"
><mcculleyja@starpower.net>
>
>Can someone recommend a source/model of bench power supply using 110V AC
>input with 12V DC output, capable of up to 15 amps DC? Thanks,
>
>Jim McCulley
>
>
>--
--
Message 3
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| Subject: | Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
Can anyone tell me if the Lithium battery is included already in the
remote on the AK-450 ELT? I have the remote unit installed and need
to send someone shopping for batteries for the ELT today and I'm
not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
D-Cell batteries, or if the lithium is already in the remote....which
is mounted in a hard to reach area from the back.
--
Tim Olson -- RV-10 #40170
DO NOT ARCHIVE
Message 4
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| Subject: | Dual Alternator Use |
--> AeroElectric-List message posted by: "Mark Neubauer" <markn@fuse.net>
Being one of Bob's electronic disciples, I was wondering about the use of my
B&C 40amp alternator with the SD-8 together in my GlaStar. Is it OK to use
them both at the same time, yielding an available current output of 48 amps,
or should the SD-8 only be energized when the main alternator is disengaged?
Are there voltage regulation problems having both alternators pumping
electrons into the system busses at slightly different set voltages
(determined by the exact regulator settings)?
Mark Neubauer
Message 5
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| Subject: | RE; 12 Volt DC Bench Power Supply |
--> AeroElectric-List message posted by: "J. Mcculley" <mcculleyja@starpower.net>
Many thanks to Bob C., Bob N. and Neil K. for your responses to the
subject inquiry. Bob N., you are correct that 13.8 V is really what I
should have said. Guess I just assumed some slight degree of adjustment
would normally be available. However,I can live with a maximum of only
12 V, if that is the set-up. Neil, I am looking forward to you finding
that one of those units you mentioned is still available. If so, I will
be delighted to pay for the shipping and your expenses in arranging for
it. Contact me off list if you prefer.
Jim McCulley
Message 6
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: "Bob C. " <flyboy.bob@gmail.com>
Tim,
The little remote indicator / button . . . which is what I think
you're talking about doesn't have an internal power requirement . . .
it's just to control / indicate whats going on with the ELT.
I hope I understood your question?
Good Luck,
Bob - in SE Iowa
On 2/4/06, Tim Olson <Tim@myrv10.com> wrote:
> --> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
>
> Can anyone tell me if the Lithium battery is included already in the
> remote on the AK-450 ELT? I have the remote unit installed and need
> to send someone shopping for batteries for the ELT today and I'm
> not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
> D-Cell batteries, or if the lithium is already in the remote....which
> is mounted in a hard to reach area from the back.
>
>
> --
> Tim Olson -- RV-10 #40170
> DO NOT ARCHIVE
>
>
Message 7
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| Subject: | Engine Cowl Temperatures |
--> AeroElectric-List message posted by: "George Braly" <gwbraly@gami.com>
Bob,
I installed some thermocouples in the engine compartment of a turbo
Bonanza in a variety of places.
OAT 107dF. Wind nil. Took off and flew around at high power with the
gear down until I had the cylinders up to the 420dF range.
Did an immediate landing. Taxi about 125 yards and put the airplane into
a closed T-hangar.
I then monitored the temps for the next 45 minutes.
At about 25 to 30 minutes the temps all reached peak from heat soak from
the engine core.
The surface temperature of the magneto case was the hottest temperature
I measured. It was around 222d F. I assume the core was a bit hotter.
The rest of the temps, including the local ambient inside the cowling
were lower.
Regards, George
Message 8
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| Subject: | Re: Certified Aircraft Rewiring |
--> AeroElectric-List message posted by: "Bob McDevitt" <mcdevitt@sympatico.ca>
I am in the middle of an engine overhaul and I thought this might be a good
time to do some rewireing.
My question is: The lead from the alternator goes into the cabin to a 50 amp
circuit breaker
The battery lead goes to the ammeter shunt and then into the bus. I'm
thinking I should eliminate the 50 amp circuit breaker and connect the
alternator to the battery at the ammeter shunt.
This is a certified aircraft, Aeronca Sedan, 1948 vintage and the wiring
bears no relationship to the factory drawings because the engine has been
changed to a 0-360 and the gererator replaced with an alternator.
Am I still legal if I do this, and is it worth while? At present I get a
small amount of noise/interference, certainly liveable.
Thanks for your help.
Bob
Message 9
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: Bikcrzy@aol.com
The small battery is already in the remote. JR
Message 10
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| Subject: | Re: Certified Aircraft Rewiring |
--> AeroElectric-List message posted by: Kevin Horton <khorton01@rogers.com>
On 4 Feb 2006, at 17:15, Bob McDevitt wrote:
> --> AeroElectric-List message posted by: "Bob McDevitt"
> <mcdevitt@sympatico.ca>
>
> I am in the middle of an engine overhaul and I thought this might
> be a good
> time to do some rewireing.
> My question is: The lead from the alternator goes into the cabin to
> a 50 amp
> circuit breaker
> The battery lead goes to the ammeter shunt and then into the bus. I'm
> thinking I should eliminate the 50 amp circuit breaker and connect the
> alternator to the battery at the ammeter shunt.
> This is a certified aircraft, Aeronca Sedan, 1948 vintage and the
> wiring
> bears no relationship to the factory drawings because the engine
> has been
> changed to a 0-360 and the gererator replaced with an alternator.
> Am I still legal if I do this, and is it worth while? At present I
> get a
> small amount of noise/interference, certainly liveable.
> Thanks for your help.
Bob,
I assume by your e-mail address that you live in Canada, and that
this is a Canadian registered aircraft. I also assume that you have
not put it into the Owner Maintenance category.
Removing the circuit protection for the alternator lead is a
significant design change. This design change would need to be
approved via an STC, in my opinion. If you were intending to keep
the 50 amp CB, and simply change the wire routing, perhaps an AME
would be prepared to sign off on it as a repair, completed in
accordance with "specified data". Specified data, as defined in the
Airworthiness Manual 571.06 includes FAA AC 43.13-1.
http://www.tc.gc.ca/civilaviation/RegServ/Affairs/cars/Part5/
Standards/571s.htm#571_06
If this is a US registered aircraft, you possibly could do it under a
337 Field Approval, but there is no similar process in Canada.
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://www.kilohotel.com/rv8
Message 11
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| Subject: | re: Airline style 2-pin 12v power outlet jacks... |
--> AeroElectric-List message posted by: Greg Campbell <gregcampbellusa@gmail.com>
I found some additional information since my original posting Wednesday:
The airline style power plug is called an EmPower Connector.
I'm looking for a source of the EmPower Jack's to go along with it.
This photo shows the plug side of the connector:
http://support.gateway.com/s/Mobile/peripher/6500687/6500687mvr4.shtml
Note - there are four pins, not just the two power pins.
I'm looking for a source for the jack side of the EmPower connector
so I can add one or two to my plane. The connection is much
more secure & compact than a cigarette lighter. It has a snap catch
that you have to push a button to release.
Any suggestions on where I can purchase these?
Or tech specs for connecting the two "data pins" ?
Thanks,
Greg
Message 12
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| Subject: | Re: Certified Aircraft Rewiring |
--> AeroElectric-List message posted by: BobsV35B@aol.com
Good Afternoon Bob,
The type certificate for the 15AC is now held by some folks up in Alaska.
The engine you have is not mentioned in the TCDS. Therefore, there must be an
STC that was used for the installation. That STC, or another one for the
alternator installation, should include data as to how your airplane should be
wired. If the change you want to make differs from the way it was done for
the STC involved, you might check with whoever has been doing the annual on
your airplane. It is possible that the change could be considered a minor
alteration. If that is the case, the change could be made and a log book entry
made by a properly certificated mechanic. If your IA agrees that the change is
minor, you are home free. If your IA does not agree that the change is minor,
you could shop for another IA or consider applying for a local approval for
your change.
Any help at all?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 2/4/2006 4:36:32 P.M. Central Standard Time,
mcdevitt@sympatico.ca writes:
This is a certified aircraft, Aeronca Sedan, 1948 vintage and the wiring
bears no relationship to the factory drawings because the engine has been
changed to a 0-360 and the generator replaced with an alternator.
Am I still legal if I do this, and is it worth while? At present I get a
small amount of noise/interference, certainly liveable.
Thanks for your help.
Message 13
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| Subject: | Re: 12 Volt DC Bench Power Supply |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Check the archives. There have been numerous postings on this.
Cheers,
John Schroeder
On Fri, 03 Feb 2006 21:50:15 -0500, J. Mcculley <mcculleyja@starpower.net>
wrote:
> --> AeroElectric-List message posted by: "J. Mcculley"
> <mcculleyja@starpower.net>
>
> Can someone recommend a source/model of bench power supply using 110V AC
> input with 12V DC output, capable of up to 15 amps DC? Thanks,
>
> Jim McCulley
>
>
--
Message 14
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| Subject: | Re: Engine Cowl Temperatures |
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
George Braly wrote:
> I installed some thermocouples in the engine compartment of a turbo
> Bonanza in a variety of places.
>...
> The surface temperature of the magneto case was the hottest temperature
> I measured. It was around 222d F. I assume the core was a bit hotter.
>
> The rest of the temps, including the local ambient inside the cowling
> were lower.
It is nice to see people who actively seek truth.
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 15
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| Subject: | Re: 12 Volt DC Bench Power Supply |
--> AeroElectric-List message posted by: Fiveonepw@aol.com
In a message dated 02/03/2006 10:20:21 PM Central Standard Time,
nuckollsr@cox.net writes:
>Can someone recommend a source/model of bench power supply using 110V AC
>input with 12V DC output, capable of up to 15 amps DC?
>>>
Might want to look at this 13.8, 20 amp supply:
http://mpja.com/productview.asp?product=5386+PS
They also have cheaper ones at 10 and 4 amp output at 13.8 VDC. I've bought
stuff from these folks a number of times and never been dissapointed. I
bought a 12 VDC supply from them for about $50 IIRC, and used it for a lot of my
initial tryout on all kinds of stuff and it worked just fine...
>From The PossumWorks in TN
Mark Phillips RV-6A N51PW
Message 16
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| Subject: | Dual Alternator Use |
--> AeroElectric-List message posted by: "Bruce Gray" <Bruce@glasair.org>
Mark,
The voltage regulator of the SD-8 is set about 1v less than the normal buss
voltage from your 40 amp main. If the main goes off line the voltage will
sag and the SD-8 will kick in. That means they will both not produce power
at the same time.
Bruce
www.glasair.org
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Mark
Neubauer
Sent: Saturday, February 04, 2006 9:06 AM
Subject: AeroElectric-List: Dual Alternator Use
--> AeroElectric-List message posted by: "Mark Neubauer" <markn@fuse.net>
Being one of Bob's electronic disciples, I was wondering about the use of my
B&C 40amp alternator with the SD-8 together in my GlaStar. Is it OK to use
them both at the same time, yielding an available current output of 48 amps,
or should the SD-8 only be energized when the main alternator is disengaged?
Are there voltage regulation problems having both alternators pumping
electrons into the system busses at slightly different set voltages
(determined by the exact regulator settings)?
Mark Neubauer
Message 17
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: Ken <klehman@albedo.net>
Tim
Mine came with the battery installed.
Ken
Do not archive.
Tim Olson wrote:
>--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
>
>Can anyone tell me if the Lithium battery is included already in the
>remote on the AK-450 ELT? I have the remote unit installed and need
>to send someone shopping for batteries for the ELT today and I'm
>not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
>D-Cell batteries, or if the lithium is already in the remote....which
>is mounted in a hard to reach area from the back.
>
>
>
>
Message 18
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: Larry McFarland <larrymc@qconline.com>
Tim,
My Lithium battery was pre-installed in the remote panel-mount and I was
to replace it
just to be sure. The life expectancy for this cell was stated at 8
years, so I marked it 2005
and reinstalled the battery.
Larry McFarland - 601HDS at www.macsmachine.com
Tim Olson wrote:
>--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
>
>Can anyone tell me if the Lithium battery is included already in the
>remote on the AK-450 ELT? I have the remote unit installed and need
>to send someone shopping for batteries for the ELT today and I'm
>not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
>D-Cell batteries, or if the lithium is already in the remote....which
>is mounted in a hard to reach area from the back.
>
>
>
>
Message 19
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| Subject: | Engine Cowl Temperatures |
--> AeroElectric-List message posted by: "Alex Peterson" <alexpeterson@earthlink.net>
> George Braly wrote:
>
> > I installed some thermocouples in the engine compartment of
> a turbo
> >Bonanza in a variety of places.
> >...
> > The surface temperature of the magneto case was the hottest
> >temperature I measured. It was around 222d F. I assume
> the core was a bit hotter.
> >
> > The rest of the temps, including the local ambient inside
> the cowling
> > were lower.
>
> It is nice to see people who actively seek truth.
>
> --
> Brian Lloyd 361 Catterline Way
I agree completely about seeking facts, thanks George.
Somewhat related, I always open my oil door when I shut down, unless it is
10F outside like today, and I'm conserving heat for a few hours.
Additionally, when shutting down for the day, I pull the dipstick up until
it can move slightly to the side. It is amazing how much steam comes up out
of there. Where do you suppose that steam would end up if you leave the
dipstick in tight?
Alex Peterson
RV6-A N66AP 712 hours
Maple Grove, MN
Message 20
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| Subject: | Re: Hall effect current sensor location |
--> AeroElectric-List message posted by: "Brinker" <brinker@cox-internet.com>
Is'nt a connection to a good hot 12v battery sufficient for the
layman ? I can see the need for a bench test unit if for a on going
business.
Randy
----- Original Message -----
From: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
Sent: Friday, February 03, 2006 10:18 PM
Subject: Re: AeroElectric-List: Hall effect current sensor location
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
> <nuckollsr@cox.net>
>
> At 09:01 PM 2/3/2006 -0600, you wrote:
>
>>--> AeroElectric-List message posted by: "Bob C. " <flyboy.bob@gmail.com>
>>
>>I have an EIS from Advanced Flight Systems . . . their instruction
>>said the same thing and I had the same issue . . .
>>
>>When I asked them . . . their bigger concern was moisture but said it
>>would be OK to mount it on the FW if I put it in a little enclosure to
>>protect it. They didn't mention the heat issue . . . I'm sure things
>>get warm especially on the ground on a hot day?!
>>
>>Good Luck,
>>Bob
>
> Interesting! Did they describe the enclosure that would
> stand off moisture? I've got a bucket full of war stories
> about various attempts and observations of the attempts of
> others to deal with atmospheric moisture and moisture
> sensitive electronics. Unless they described a very specific
> technique for sealing the sensor from the environment, the
> term "enclosure" would have been quite inadequate.
>
> I'm 90% certain that these things will live under the cowl
> just fine. We just need to do a little homework to confirm/
> refine that perception.
>
> Bob . . .
>
>
>
Message 21
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| Subject: | Re: Dual Alternator Use |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 09:06 AM 2/4/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: "Mark Neubauer" <markn@fuse.net>
>
>Being one of Bob's electronic disciples, I was wondering about the use of my
>B&C 40amp alternator with the SD-8 together in my GlaStar. Is it OK to use
>them both at the same time, yielding an available current output of 48 amps,
>or should the SD-8 only be energized when the main alternator is disengaged?
>Are there voltage regulation problems having both alternators pumping
>electrons into the system busses at slightly different set voltages
>(determined by the exact regulator settings)?
>
>Mark Neubauer
Under what circumstances do you think you will need 48 amps?
It's exceedingly difficult to make two alternators . . . especially
different sizes/styles to proportionately share a load. I've
designed special regulators for that purpose, the first back
in the Cessna 303 Crusader days.
Induced quite a bit of little-value-added hardware to the
airplane along with one more black box to go belly up to the
tune of $400/pop
If you really NEED to parallel two alternators, let's talk
some more.
Bob . . .
Message 22
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: "Chris & Kellie Hand" <ckhand@earthlink.net>
I installed mine last weekend and it came with both the D-cell batteries and
remote panel battery already installed.
Chris Hand
RV-6A, finishing kit stages
----- Original Message -----
From: "Tim Olson" <Tim@MyRV10.com>
<aeroelectric-list@matronics.com>
Sent: Saturday, February 04, 2006 5:40 AM
Subject: AeroElectric-List: Ameri-King AK-450 ELT - Remote Battery Included?
> --> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
>
> Can anyone tell me if the Lithium battery is included already in the
> remote on the AK-450 ELT? I have the remote unit installed and need
> to send someone shopping for batteries for the ELT today and I'm
> not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
> D-Cell batteries, or if the lithium is already in the remote....which
> is mounted in a hard to reach area from the back.
>
>
> --
> Tim Olson -- RV-10 #40170
> DO NOT ARCHIVE
>
>
>
Message 23
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| Subject: | Re: Hall effect current sensor location |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 11:53 PM 2/3/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: "Richard Sipp" <rsipp@earthlink.net>
>
>
> > Interesting! Did they describe the enclosure that would
> > stand off moisture? I've got a bucket full of war stories
> > about various attempts and observations of the attempts of
> > others to deal with atmospheric moisture and moisture
> > sensitive electronics. Unless they described a very specific
> > technique for sealing the sensor from the environment, the
> > term "enclosure" would have been quite inadequate.
> >
> > I'm 90% certain that these things will live under the cowl
> > just fine. We just need to do a little homework to confirm/
> > refine that perception.
> >
> > Bob . . .
>
>For one data point, I have had a Vision Micro Systems supplied hall effect
>sensor mounted on an upper engine mount leg for 10 years and 700 hours with
>no problems. We used two cushion clamps.
I would have bet some pretty good money that your
"experiment" would have been successful.
Bob . . .
Message 24
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| Subject: | Re: Press to Test |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 12:00 PM 2/4/2006 +0000, you wrote:
>--> AeroElectric-List message posted by: Gerry Holland
><gholland@gemini-resourcing.com>
>
>Hi!
>
>I'm trying to wire in a Oak MS25041-8 Press to Test Sx. Unfortunately it's
>during a severe bout of multiple senior moments!
>
>Example can be found at http://tinyurl.com/crxvy
>
>My aim is to press this test Sx and illuminate a panel of Annunciator lights
>that are isolated by diodes from each condition feed and check bulb state
>prior to start up checks and general switch on. The Sx has 3 connections and
>the capability to illuminate the press button on actuation. I can not get it
>to illuminate Annunciator Panel.
>
>Any ideas. My thoughts are at best confused now but with the bulb as part of
>the circuit is their a resistance load isolating power.
>
>Any help gratefully received. Medication is the next step!
>
>Regards
>
>Gerry
The press-to-test feature of this fixture is designed
to accommodate only the lamp contained within the fixture.
I have crafted circuits that would sense when the PTT
feature is actuated and used that signal to do other things
as well. Such a circuit could be used to initiate the PTT
function for the annunciator panel. As you've noted,
the self-contained lamp is ALWAYS in series with the
fixture's power draw hence, if this lamp burns out, you
loose that lamp plus press-to-test capability. But then,
it would certainly alert you to the fact that the one lamp
is burned out . . . cause ALL the lamps would fail PTT.
I'd need to know more about what kind of signal tests your
annunciator panel lights and what kind of signal illuminates
the lamp in your MS25041-8 fixture.
Bob . . .
Message 25
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| Subject: | Hall effect current sensor location |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 08:51 PM 2/3/2006 -0800, you wrote:
>--> AeroElectric-List message posted by: "DonVS" <dsvs@comcast.net>
>
>Rob Hickman of Advanced Flight Systems told me to "pot" the entire circuit
>board with an electronic type RTV. Dan Checkoway has over 800 hours on his
>done this way. His is in the engine compartment.
Yuk! Moisture PROOFING is a mixture of art and science
and many attempts at sealing and/or potting can actually
make vulnerability to effects of moisture worse.
Until we make some temperature measurements that suggest
otherwise, I gotta believe that the critter will live
just fine on the firewall.
Bob . . .
Message 26
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| Subject: | Engine Cowl Temperatures |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 07:03 AM 2/4/2006 -0600, you wrote:
>--> AeroElectric-List message posted by: "George Braly" <gwbraly@gami.com>
>
>
>Bob,
>
>I installed some thermocouples in the engine compartment of a turbo
>Bonanza in a variety of places.
>
>OAT 107dF. Wind nil. Took off and flew around at high power with the
>gear down until I had the cylinders up to the 420dF range.
>
>Did an immediate landing. Taxi about 125 yards and put the airplane into
>a closed T-hangar.
>
>I then monitored the temps for the next 45 minutes.
>
>At about 25 to 30 minutes the temps all reached peak from heat soak from
>the engine core.
>
>The surface temperature of the magneto case was the hottest temperature
>I measured. It was around 222d F. I assume the core was a bit hotter.
>
>The rest of the temps, including the local ambient inside the cowling
>were lower.
That jives with my recollection of some studies another
engineer at Electromech did about 25 years ago . . on our
company owned A36. I wasn't directly involved with the work
and had no reason to do a gray-matter stash of the data.
I'm sure we've done a boat-load of temperature surveys on
Bonanzas at RAC. I'll dig around in the reports file and see
what I can find.
Bob . . .
Message 27
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| Subject: | Re: re: Airline style 2-pin 12v power outlet jacks... |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Greg -
Are you hung up on 4 pins and a locking mechanism?
If not, they make three pin jobbies (jacks & plugs) that have a good lock
and are more compact than a cigarette lighter. Check these. They are XLR
audio connectors for hooking microphones & speakers up to big sound
systems, and for the little gooseneck, 2 watt console lights. They are
either 3 pin or 4 pin and can carry about 5 amps. The lock latch is on the
jack (female):
https://www.alliedelec.com/Search/SearchResults.asp?SearchQuery=XLR&Submit=find+it%21
http://w1.lancair.net/pix/jschroeder-panel/InstrPanel_WireProg1_8
We installed two on the panel for map lights, one in the overhead and one
on each side of the rear seat for map lights.
The problem of getting away from the classic lighter jack for getting
power to removeable devices is that you will have to wire each device to
be compatible with the jack. "Sorry junior, we don't have a spare battery
on board you can't plug that MP3 player in ..." Hmmmmmnnn ... now that
aint a bad idea after all.
John
On Sat, 4 Feb 2006 10:09:43 -0500, Greg Campbell
<gregcampbellusa@gmail.com> wrote:
> I'm looking for a source for the jack side of the EmPower connector
> so I can add one or two to my plane. The connection is much
> more secure & compact than a cigarette lighter. It has a snap catch
> that you have to push a button to release.
--
Message 28
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| Subject: | Re: Ameri-King AK-450 ELT - Remote Battery Included? |
--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
Thanks to all who replied. Yes, mine came with a battery
in the remote I found so it's all installed and
ready for a crash. ;)
Tim Olson -- RV-10 #40170
Current section: Final Assembly
DO NOT ARCHIVE
Ken wrote:
> --> AeroElectric-List message posted by: Ken <klehman@albedo.net>
>
> Tim
> Mine came with the battery installed.
> Ken
>
> Do not archive.
>
> Tim Olson wrote:
>
>
>>--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
>>
>>Can anyone tell me if the Lithium battery is included already in the
>>remote on the AK-450 ELT? I have the remote unit installed and need
>>to send someone shopping for batteries for the ELT today and I'm
>>not sure if I need to send them out for the 1 DL 1/3 NB Lithium AND the
>>D-Cell batteries, or if the lithium is already in the remote....which
>>is mounted in a hard to reach area from the back.
>>
>>
>>
>>
Message 29
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| Subject: | Dual Alternator Use |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 01:01 PM 2/4/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: "Bruce Gray" <Bruce@glasair.org>
>
>Mark,
>
>The voltage regulator of the SD-8 is set about 1v less than the normal buss
>voltage from your 40 amp main. If the main goes off line the voltage will
>sag and the SD-8 will kick in. That means they will both not produce power
>at the same time.
That's the installation rationale for the SD-20 when used with
an SB-1 regulator and wired per Figure Z-12. This philosophy
does not apply to the SD-8 in any of the recommended installations.
Bob . . .
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