Today's Message Index:
----------------------
1. 04:22 AM - New RWS EFI/Electcronic Ignition group (Sam Hoskins)
2. 04:22 AM - Re: Audio noise revisited (Carlos Trigo)
3. 06:26 AM - Re: New RWS EFI/Electcronic Ignition group (Robert L. Nuckolls, III)
4. 06:27 AM - Re: Audio noise revisited (Robert L. Nuckolls, III)
5. 07:37 AM - Re: New RWS EFI/Electcronic Ignition group (Charlie England)
6. 07:49 AM - Re: New RWS EFI/Electcronic Ignition group (Sam Hoskins)
7. 08:26 AM - Re: New RWS EFI/Electcronic Ignition group (Robert McCallum)
8. 10:45 AM - GPS Serial Data to Garmin GTX-327 Transponder (Matt Dralle)
9. 11:06 AM - Re: New RWS EFI/Electcronic Ignition group (John McMahon)
10. 12:03 PM - Z-14 v Z-14Fadec question (Christopher Barber)
11. 12:12 PM - Re: New RWS EFI/Electcronic Ignition group (Robert McCallum)
12. 12:56 PM - Re: New RWS EFI/Electcronic Ignition group (jon@finleyweb.net)
13. 01:48 PM - Re: Audio noise revisited (Carlos Trigo)
14. 03:57 PM - Re: New RWS EFI/Electcronic Ignition group (Kevin Horton)
15. 04:11 PM - Re: New RWS EFI/Electcronic Ignition group (Peter Eedy)
16. 04:35 PM - Re: New RWS EFI/Electcronic Ignition group (Sam Hoskins)
17. 04:44 PM - Follow-up on Carling switch failures. . . (Charles Brame)
18. 05:50 PM - Re: Follow-up on Carling switch failures. . . (Vern Little)
19. 05:52 PM - Re: GPS Serial Data to Garmin GTX-327 Transponder (Vern Little)
20. 06:26 PM - Re: Z-14 v Z-14Fadec question (Ken)
21. 06:36 PM - Re: Follow-up on Carling switch failures. . . (B Tomm)
22. 06:41 PM - Using TurboCad (B Tomm)
23. 06:59 PM - Re: Follow-up on Carling switch failures. . . (Robert L. Nuckolls, III)
24. 07:08 PM - Re: Audio noise revisited (Robert L. Nuckolls, III)
25. 09:09 PM - Re: Follow-up on Carling switch failures. . . (Vern Little)
26. 11:28 PM - Re: Follow-up on Carling switch failures. . . (B Tomm)
Message 1
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| Subject: | New RWS EFI/Electcronic Ignition group |
A couple of us have started a brand new, self-help, Yahoo! group, centered
around Real World Solutions' electronic
controllers<http://www.rotaryaviation.com/eficont.html>.
This would be specific to this brand only. If you have a RWS EC1, EC2, or
EC3 controller, or are planning on installing one in the future, please sig
n
up and get involved.
Tracy Crook has been invited, but has not yet signed up. We are hoping.
It's called
EC3_RWS =B7 Friends of RWS EFI Ignition Controllers.
Sign up here:
Group home page: http://groups.yahoo.com/group/EC3_RWS
Group email address: EC3_RWS@yahoogroups.com
Best Wishes,
Sam Hoskins
Murphysboro, IL
Message 2
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| Subject: | Audio noise revisited |
Bob
Did you get my offline email?
Carlos
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L.
Nuckolls, III
Sent: quarta-feira, 31 de Dezembro de 2008 21:43
Subject: RE: AeroElectric-List: Audio noise revisited
At 02:36 PM 12/31/2008, you wrote:
Hi Bob
My Intercom is the Flightcom 403. Its power requirement (per the manual)
is
12-28V 0,16Amp.
My next step would be exactly powering it from a separate battery, but I
still didn=12t do it, =11cause I had no battery available - will do it
next year
:-) (tomorrow)
If it cleans up working from a separate power source, how should I
proceed?
Consider some form of filter for the +12V input
to the intercom. I have one I can send you to try.
See:
http://www.aeroelectric.com/Catalog/AEC/9006/9006_1.jpg
You can choose from either a horizontal or vertical
connector position.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 3
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
At 06:19 AM 1/2/2009, you wrote:
>A couple of us have started a brand new,
>self-help, Yahoo! group, centered around
><http://www.rotaryaviation.com/eficont.html>Real
>World Solutions' electronic controllers. This
>would be specific to this brand only. If you
>have a RWS EC1, EC2, or EC3 controller, or are
>planning on installing one in the future, please sign up and get involved.
>
>Tracy Crook has been invited, but has not yet signed up. We are hoping.
>
>It's called
>
>EC3_RWS =B7 Friends of RWS EFI Ignition Controllers.
>
>Sign up here:
>
>Group home page:
><http://groups.yahoo.com/group/EC3_RWS>http://groups.yahoo.com/group/EC3_RW
S
>Group email address:
<mailto:EC3_RWS@yahoogroups.com>EC3_RWS@yahoogroups.com
>
>Best Wishes,
>
>Sam Hoskins
>Murphysboro, IL
My congratulations and commentdations for your efforts
sir. Hava you considered asking Matt for a List-server
slot on Matronics?
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 4
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| Subject: | Audio noise revisited |
At 07:57 AM 1/1/2009, you wrote:
>Good morning Bob
>
>Thanks for your offer, I accept it and I prefer the vertical connector.
>
>Please ship it (Global Priority Mail) to
>
>CARLOS TRIGO
>Rua dos Cravos, 424
>2750-225 CASCAIS
>PORTUGAL
>
>Tell me if I have to pay you something and how.
>
>Regards
>Carlos
>
>
We need to do the stand-alone battery test to
make sure the offending noise is coming in through
the power supply. If the noise is coming in through
another path, then a power filter wont help.
You can use a couple of 6v volt lantern batteries
in series. Do your stores carry these?
Emacs!
It doesn't need to be alkaline. The venerable old
carbon-zinc versions (cheapest) would suffice for
this task.
Bob. . .
Message 5
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
Robert L. Nuckolls, III wrote:
> At 06:19 AM 1/2/2009, you wrote:
>> A couple of us have started a brand new, self-help, Yahoo! group,
>> centered around Real World Solutions' electronic controllers
>> <http://www.rotaryaviation.com/eficont.html>. This would be specific
>> to this brand only. If you have a RWS EC1, EC2, or EC3 controller,
>> or are planning on installing one in the future, please sign up and
>> get involved.
>>
>> Tracy Crook has been invited, but has not yet signed up. We are hoping.
>>
>> It's called
>>
>> EC3_RWS Friends of RWS EFI Ignition Controllers.
>>
>> Sign up here:
>>
>> Group home page: http://groups.yahoo.com/group/EC3_RWS
>> Group email address: EC3_RWS@yahoogroups.com
>> <mailto:EC3_RWS@yahoogroups.com>
>>
>> Best Wishes,
>>
>> Sam Hoskins
>> Murphysboro, IL
>
> My congratulations and commentdations for your efforts
> sir. Hava you considered asking Matt for a List-server
> slot on Matronics?
>
> Bob . . .
>
I'd 2nd that idea; I find the yahoo groups a royal pain in the backside.
Charlie
Message 6
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
thanks Bob.
I am most familiar with the administrative portions of the Yahoo groups, so
it was the easiest FOR ME to create it.
We're up to 7 members, so far.
Sam
On Fri, Jan 2, 2009 at 8:23 AM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 06:19 AM 1/2/2009, you wrote:
>
> A couple of us have started a brand new, self-help, Yahoo! group, centere
d
> around Real World Solutions' electronic controllers<http://www.rotaryavia
tion.com/eficont.html>.
> This would be specific to this brand only. If you have a RWS EC1, EC2, o
r
> EC3 controller, or are planning on installing one in the future, please s
ign
> up and get involved.
>
> Tracy Crook has been invited, but has not yet signed up. We are hoping.
>
> It's called
>
> EC3_RWS =B7 Friends of RWS EFI Ignition Controllers.
>
> Sign up here:
>
> Group home page: http://groups.yahoo.com/group/EC3_RWS
> Group email address: EC3_RWS@yahoogroups.com
>
> Best Wishes,
>
> Sam Hoskins
> Murphysboro, IL
>
>
> My congratulations and commentdations for your efforts
> sir. Hava you considered asking Matt for a List-server
> slot on Matronics?
>
> Bob . . .
>
> ----------------------------------------)
> ( . . . a long habit of not thinking )
> ( a thing wrong, gives it a superficial )
> ( appearance of being right . . . )
> ( )
> ( -Thomas Paine 1776- )
> ----------------------------------------
>
>
> *
>
===========
===========
===========
===========
> *
>
>
Message 7
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
Sam;
While I also applaud your efforts and congratulate you on your
initiative and initial success, I have to agree wholeheartedly with
Charlie and with Bob N's suggestion. Matronics lists are so much more
convenient and easy to use while Yahoo is such a PITA with all its
attached garbage. Your new group might be a much larger success with
Matt than with Yahoo. I, for one, definitely won't work with Yahoo, I've
become too spoiled by Matt's format to go back to Yahoo's clutter.
Respectfully
Bob McC
Do Not Archive
----- Original Message -----
From: Sam Hoskins
To: aeroelectric-list@matronics.com
Sent: Friday, January 02, 2009 10:47 AM
Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
thanks Bob.
I am most familiar with the administrative portions of the Yahoo
groups, so it was the easiest FOR ME to create it.
We're up to 7 members, so far.
Sam
On Fri, Jan 2, 2009 at 8:23 AM, Robert L. Nuckolls, III
<nuckolls.bob@aeroelectric.com> wrote:
At 06:19 AM 1/2/2009, you wrote:
A couple of us have started a brand new, self-help, Yahoo! group,
centered around Real World Solutions' electronic controllers. This
would be specific to this brand only. If you have a RWS EC1, EC2, or
EC3 controller, or are planning on installing one in the future, please
sign up and get involved.
Tracy Crook has been invited, but has not yet signed up. We are
hoping.
It's called
EC3_RWS =B7 Friends of RWS EFI Ignition Controllers.
Sign up here:
Group home page: http://groups.yahoo.com/group/EC3_RWS
Group email address: EC3_RWS@yahoogroups.com
Best Wishes,
Sam Hoskins
Murphysboro, IL
My congratulations and commentdations for your efforts
sir. Hava you considered asking Matt for a List-server
slot on Matronics?
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
ist"
target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
Message 8
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| Subject: | GPS Serial Data to Garmin GTX-327 Transponder |
Listers,
I've tried sending two different sources of NMEA 0183 data at 4800/9600/19200/38400/57600
baud rates to my Garmin GTX-327 on both serial input ports 1 (db25
Pin 2) and port 2 (db25 pin 19), and configured for "GPS" input. But I don't
get anything on the GTX-327 serial input test display. I have been successful
at getting AirData Z-format from the GRT EFIS at 9600 baud into either of the
GTX-327 serial ports, so the ports are good. The NMEA 0183 data registers correctly
on other devices reading it so the GPS serial output seem fine. The GTX-327
just won't seem to see the GPS data for some reason.
Am I doing something wrong? Has anyone else tried this successfully?
Thanks!
Matt Dralle
RV-8 #82880 N998RV
Message 9
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
Bob, FWIW I have the LML, the Yahoo ES group and the AeroElectric list all
sent to my Google gmail account, where they are sent to their own folder
labels.
They then are all in the same place, in the same format and easy to search
in the same way.
Works great for me...
Message 10
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| Subject: | Z-14 v Z-14Fadec question |
Last week I asked about C/B's tripping in the NON crossover mode and
received a thoughtful answer. Thanks. Due to my growing but limited
knowledge in this area it took a EE buddy of mine to figure out I had
the crossover switch wired in a "mirrored" manner on my switch. Now, no
more C/B tripping AND my alternators are charging properly. So, my
initial calculations seemed to be ok as to wires etc....just not my
translation as to switch connections. Ahhhhhh, non-the-less, it now
feels nice.
Now, I have a general question regarding the Z-14 schemes. For the
crossover switch, up is to engage the starter with both batteries,
center is non-crossover, normal mode with batteries working to power
their bus independently and down is both batteries working together on
both busses......If I understand correctly. So, in the Z-14 Fadec
scheme, the start button engages the starter, then one position on the
switch is independent alt to each bus and the other switch to have the
systems work together? Or, is on position Off and the other switch
position engaging both alternators to work together? If it is the
second scenario, does that mean the two systems ALWAYS work together?
If so, is there any reason not to have both systems always working
together in the standard Z-14 scheme. I assume the FADEC label is since
it is always engaged there is no pilot intervention. Just looking for a
better understanding. Thanks.
All the best,
Chris Barber
Houston
Velocity SE with all electric Mazda 13b rotary
Message 11
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
John;
Maybe I'm not up to speed on the current state of Yahoo, but the last
time I belonged to a Yahoo list (admittedly several years ago) I had to
go to the Yahoo website, log in, wait for 5 minutes of garbage ads to
unfold, find the list I was interested in, log into that then scroll
through all of the messages to determine what I'd already seen and what
was new.
The Matronics lists just appear as a current message from a "friend" in
my regular e-mail and what I've already read is deleted and gone. No
fuss, no muss, no hassle, no adverts.
Sounds from your description that I need to be re-educated on the
current workings of Yahoo. Thank you for the enlightenment.
Bob McC
Do Not Archive
----- Original Message -----
From: John McMahon
To: aeroelectric-list@matronics.com
Sent: Friday, January 02, 2009 2:04 PM
Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
Bob, FWIW I have the LML, the Yahoo ES group and the AeroElectric list
all sent to my Google gmail account, where they are sent to their own
folder labels.
They then are all in the same place, in the same format and easy to
search in the same way.
Works great for me...
Message 12
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
=0AOk <deep breath>... Bob repeatedly tells me that an educational post is
always the best route. So, let me try that approach rather than typing wha
t I would really like to say.=0A=0A =0A=0AA very good approach before engag
ing in discussions of this nature is to spend a bit of time learning about
the current status of that particular thing. Many of us have worked with a
particular "thing" in the past which left a sour taste in our mouth. Howev
er; "things" evolve fairly rapidly (software maybe more so than most things
) so what one experienced yesterday may be entirely different today. In ou
r hobby (aviation), we have the oppurtunity to dispell a HUGE number of myt
hs that have been propogated over the years and are hurtful to aviation. I
n the same manner, I believe we should apply these same skills to every asp
ect of our lives. Additionally; upon close examination, many folks find th
at their negative experience while thousands of others are having a positiv
e experience may have something to do with their own lack of understanding
or inappropriate use of the "thing". This is often remedied thru some addit
ional education about the "thing".=0A=0A =0A=0AThanks Sam. You did a fine
thing, I'm sure it will be very helpful to us EC2/3 users.=0A=0A =0A=0AJon
=0A=0A-----Original Message-----=0AFrom: "Robert McCallum" <robert.mccallum
2@sympatico.ca>=0ASent: Friday, January 2, 2009 3:10pm=0ATo: aeroelectric-l
ist@matronics.com=0ASubject: Re: AeroElectric-List: New RWS EFI/Electcronic
Ignition group=0A=0A=0A=0A=0A=0A=0AJohn;=0A=0A =0A=0AMaybe I'm not up to s
peed on the current state of Yahoo, but the last time I belonged to a Yahoo
list (admittedly several years ago) I had to go to the Yahoo website, log
in, wait for 5 minutes of garbage ads to unfold, find the list I was intere
sted in, log into that then scroll through all of the messages to determine
what I'd already seen and what was new.=0A=0AThe Matronics lists just appe
ar as a current message from a "friend" in my regular e-mail and what I've
already read is deleted and gone. No fuss, no muss, no hassle, no adverts.
=0A=0ASounds from your description that I need to be re-educated on the cur
rent workings of Yahoo. Thank you for the enlightenment.=0A=0A =0A=0ABob Mc
C=0A=0A =0A=0ADo Not Archive=0A=0A
Message 13
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| Subject: | Audio noise revisited |
Ok, I sneaked out the 12V battery of my house alarm and did the test.
I powered the Intercom from that separate battery but the noises are still
there. I suppose, as you say, that a filter on the Intercom power wire won't
solve my problem.
Regarding the A/F Ratio Monitor, I am pretty sure it makes one of the
whines, so I have to put back the power filter that it used to have (the
filter has gone west some time ago, way before installing the Intercom, and
I took it away, to restore power to the Monitor, not knowing about the noise
it causes). I believe that will eliminate that noise.
The remaining problem now is coming from the COMM Radio. That other whine
comes on and off whenever I turn the radio on and off. I even tried powering
the radio from a separate battery and no joy.
Should I put the filter on the Radio's power line?
What do you suggest?
Carlos
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: sexta-feira, 2 de Janeiro de 2009 14:25
Subject: RE: AeroElectric-List: Audio noise revisited
At 07:57 AM 1/1/2009, you wrote:
We need to do the stand-alone battery test to
make sure the offending noise is coming in through
the power supply. If the noise is coming in through
another path, then a power filter wont help.
You can use a couple of 6v volt lantern batteries
in series. Do your stores carry these?
It doesn't need to be alkaline. The venerable old
carbon-zinc versions (cheapest) would suffice for
this task.
Bob. . .
Message 14
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
Yahoo Groups subscribers can select the option to have messages sent
to them via e-mail. I subscribe to several Yahoo Groups, and am the
group owner for two others, and never have to go to the web site
unless I want to change message delivery options.
Kevin Horton
On 2 Jan 2009, at 14:10, Robert McCallum wrote:
> John;
>
> Maybe I'm not up to speed on the current state of Yahoo, but the
> last time I belonged to a Yahoo list (admittedly several years ago)
> I had to go to the Yahoo website, log in, wait for 5 minutes of
> garbage ads to unfold, find the list I was interested in, log into
> that then scroll through all of the messages to determine what I'd
> already seen and what was new.
> The Matronics lists just appear as a current message from a "friend"
> in my regular e-mail and what I've already read is deleted and gone.
> No fuss, no muss, no hassle, no adverts.
> Sounds from your description that I need to be re-educated on the
> current workings of Yahoo. Thank you for the enlightenment.
>
> Bob McC
>
> Do Not Archive
>
> ----- Original Message -----
> From: John McMahon
> To: aeroelectric-list@matronics.com
> Sent: Friday, January 02, 2009 2:04 PM
> Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
>
> Bob, FWIW I have the LML, the Yahoo ES group and the AeroElectric
> list all sent to my Google gmail account, where they are sent to
> their own folder labels.
>
> They then are all in the same place, in the same format and easy to
> search in the same way.
>
> Works great for me...
Message 15
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| Subject: | New RWS EFI/Electcronic Ignition group |
Hi all
I have used PG offline to "manage" yahoo group messages for several years
now. www.personalgroupware.com
Great program, lets me download the messages from Yahoo and view, search,
tag etc on my pc.
No affiliation just a satisfied user.
Peter E. Newcastle NSW Australia
Waiex VH-WYX - 20% done
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Kevin
Horton
Sent: Saturday, 3 January 2009 10:55 AM
Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
Yahoo Groups subscribers can select the option to have messages sent
to them via e-mail. I subscribe to several Yahoo Groups, and am the
group owner for two others, and never have to go to the web site
unless I want to change message delivery options.
Kevin Horton
On 2 Jan 2009, at 14:10, Robert McCallum wrote:
> John;
>
> Maybe I'm not up to speed on the current state of Yahoo, but the
> last time I belonged to a Yahoo list (admittedly several years ago)
> I had to go to the Yahoo website, log in, wait for 5 minutes of
> garbage ads to unfold, find the list I was interested in, log into
> that then scroll through all of the messages to determine what I'd
> already seen and what was new.
> The Matronics lists just appear as a current message from a "friend"
> in my regular e-mail and what I've already read is deleted and gone.
> No fuss, no muss, no hassle, no adverts.
> Sounds from your description that I need to be re-educated on the
> current workings of Yahoo. Thank you for the enlightenment.
>
> Bob McC
>
> Do Not Archive
>
> ----- Original Message -----
> From: John McMahon
> To: aeroelectric-list@matronics.com
> Sent: Friday, January 02, 2009 2:04 PM
> Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
>
> Bob, FWIW I have the LML, the Yahoo ES group and the AeroElectric
> list all sent to my Google gmail account, where they are sent to
> their own folder labels.
>
> They then are all in the same place, in the same format and easy to
> search in the same way.
>
> Works great for me...
Message 16
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| Subject: | Re: New RWS EFI/Electcronic Ignition group |
I don't know what bad experiences guys have had, but to me Yahoo! is easy to
take. It is easy to upload photos and I would also like to build up the
share links section so guys can share resources, such as sources for fuel
injection parts. Plus, my learning curve on it is very flat.
Tell you what. If you are interested in the RWS EC2/EC3 controller, sign up
and if you have ANY trouble with it, we'll pull you out of it ASAP. I have
it set up so only aviators can join on my approval and only the members can
post messages. Therefore, there should be NO SPAM. Yes, Yahoo has small
adds, ala Google, but I don't even notice them.
In reality, I anticipate that posts will be fairly far and few between,
since we live in such a small universe.
Sam Hoskins
Murphysboro, IL
www.samhoskins.blogspot.com
On Fri, Jan 2, 2009 at 6:05 PM, Peter Eedy <peter@eedy.id.au> wrote:
>
> Hi all
> I have used PG offline to "manage" yahoo group messages for several years
> now. www.personalgroupware.com
> Great program, lets me download the messages from Yahoo and view, search,
> tag etc on my pc.
> No affiliation just a satisfied user.
> Peter E. Newcastle NSW Australia
> Waiex VH-WYX - 20% done
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Kevin
> Horton
> Sent: Saturday, 3 January 2009 10:55 AM
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
>
> khorton01@rogers.com>
>
> Yahoo Groups subscribers can select the option to have messages sent
> to them via e-mail. I subscribe to several Yahoo Groups, and am the
> group owner for two others, and never have to go to the web site
> unless I want to change message delivery options.
>
> Kevin Horton
>
> On 2 Jan 2009, at 14:10, Robert McCallum wrote:
>
> > John;
> >
> > Maybe I'm not up to speed on the current state of Yahoo, but the
> > last time I belonged to a Yahoo list (admittedly several years ago)
> > I had to go to the Yahoo website, log in, wait for 5 minutes of
> > garbage ads to unfold, find the list I was interested in, log into
> > that then scroll through all of the messages to determine what I'd
> > already seen and what was new.
> > The Matronics lists just appear as a current message from a "friend"
> > in my regular e-mail and what I've already read is deleted and gone.
> > No fuss, no muss, no hassle, no adverts.
> > Sounds from your description that I need to be re-educated on the
> > current workings of Yahoo. Thank you for the enlightenment.
> >
> > Bob McC
> >
> > Do Not Archive
> >
> > ----- Original Message -----
> > From: John McMahon
> > To: aeroelectric-list@matronics.com
> > Sent: Friday, January 02, 2009 2:04 PM
> > Subject: Re: AeroElectric-List: New RWS EFI/Electcronic Ignition group
> >
> > Bob, FWIW I have the LML, the Yahoo ES group and the AeroElectric
> > list all sent to my Google gmail account, where they are sent to
> > their own folder labels.
> >
> > They then are all in the same place, in the same format and easy to
> > search in the same way.
> >
> > Works great for me...
>
>
Message 17
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| Subject: | Follow-up on Carling switch failures. . . |
Bob,
While I can't disagree with your findings, if I remember the
discussion correctly, most of the failed B&C S700 switches were on
strobe systems. I think I kicked off the recent discussion with a
failed switch on my strobe system. I have several other B&C S700
series switches, all are wired similar to the strobe switch, and none
of them have failed or showed signs of heat stress. Why should the
switches on a strobe system be more failure prone?
Charlie Brame
RV 6A N11CB
San Antonio
----------------------------------------------------------------------------
> Time: 06:31:17 PM PST US
> From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
> Subject: AeroElectric-List: Follow-up on Carling switch failures . . .
>
> A few weeks ago a discussion here on the List explored
> a "rash" of failures in Carling switches sold by a number
> of sources including B&C as their S700 series devices.
--------------------------------snip------------------------------
>
>
> I can now comfortably suggest that failures we've
> seen (and perceived as a sudden up-tick in frequency)
> have been happening in these products for years. Further,
> the smoked switches were not a failure on the part of the
> manufacturer to meet electrical specifications nor
> upon users for failure to respect those ratings.
>
> Bob . . .
>
> ----------------------------------------)
> ( . . . a long habit of not thinking )
> ( a thing wrong, gives it a superficial )
> ( appearance of being right . . . )
> ( )
> ( -Thomas Paine 1776- )
> ----------------------------------------
>
Message 18
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| Subject: | Re: Follow-up on Carling switch failures. . . |
Bob's working hypothesis is that vibration is loosening the rivets on
the Carling switches. High current switches (strobe supplies, landing
lights) then exhibit overtemperature, increased resistance and thermal
runaway. Strobe supplies are probably the worst load in the aircraft
because they are effectively constant-power devices: as the input
voltage decreases, the current increases to compensate. This would be
bad news if the switch is resistive.
I've had two strobe switch failures, one landing light switch (actually
a wig-wag) failure, and one master switch failure (loose rivet but no
charred terminals). I have also received brand-new Carling switches
with loose terminals.
As an experiment, I replaced several Carling switches with Honeywell
switches and have been running them, monitoring for failures. I
proposed about 100 hours of testing before any conclusions could be
made. This will probably take several more months. I have check them
in the interim, with no problems.
If the experiment shows failure of the Honeywell switches, then the
problem may be attributed to my installation.
If the experiment does not show failure of the Honeywell switches, then
the problem may be attributed to the Carling switches sensitivity to
vibration.
Bob has concluded that the Carling switches are fine, but should have
vibration decoupling loops to minimize vibration stresses on the
terminals. Good advice no matter who's switches are installed.
Unfortunately, I don't agree that the problem is that my (our)
installations are incorrect. Rather, I believe that the problem is that
the Carling switches are unusually sensitive to vibration.
In my next project, I am planning to use different switches, plus
decoupling loops. In addition, strobe and landing light loads will be
isolated with automotive relays which are generally more robust.
Vern Little
----- Original Message -----
From: Charles Brame
To: AeroElectric List
Sent: Friday, January 02, 2009 4:42 PM
Subject: AeroElectric-List: Follow-up on Carling switch failures. . .
Bob,
While I can't disagree with your findings, if I remember the
discussion correctly, most of the failed B&C S700 switches were on
strobe systems. I think I kicked off the recent discussion with a failed
switch on my strobe system. I have several other B&C S700 series
switches, all are wired similar to the strobe switch, and none of them
have failed or showed signs of heat stress. Why should the switches on a
strobe system be more failure prone?
Charlie Brame
RV 6A N11CB
San Antonio
-------------------------------------------------------------------------
---
Time: 06:31:17 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: AeroElectric-List: Follow-up on Carling switch failures . .
.
A few weeks ago a discussion here on the List explored
a "rash" of failures in Carling switches sold by a number
of sources including B&C as their S700 series devices.
--------------------------------snip------------------------------
I can now comfortably suggest that failures we've
seen (and perceived as a sudden up-tick in frequency)
have been happening in these products for years. Further,
the smoked switches were not a failure on the part of the
manufacturer to meet electrical specifications nor
upon users for failure to respect those ratings.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 19
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|
| Subject: | Re: GPS Serial Data to Garmin GTX-327 Transponder |
Hi Matt: I talked to Garmin about this a few years ago, and unless you are
using a GNS430 family device or other Garmin IFR certified device, the 327
will ignore the GPS data.
I spent a lot of time trying to get it to work, and no joy.
Best to call Garmin on this.
Vern
----- Original Message -----
From: "Matt Dralle" <dralle@matronics.com>
Sent: Friday, January 02, 2009 10:43 AM
Subject: AeroElectric-List: GPS Serial Data to Garmin GTX-327 Transponder
>
> <dralle@matronics.com>
>
>
> Listers,
>
> I've tried sending two different sources of NMEA 0183 data at
> 4800/9600/19200/38400/57600 baud rates to my Garmin GTX-327 on both serial
> input ports 1 (db25 Pin 2) and port 2 (db25 pin 19), and configured for
> "GPS" input. But I don't get anything on the GTX-327 serial input test
> display. I have been successful at getting AirData Z-format from the GRT
> EFIS at 9600 baud into either of the GTX-327 serial ports, so the ports
> are good. The NMEA 0183 data registers correctly on other devices reading
> it so the GPS serial output seem fine. The GTX-327 just won't seem to see
> the GPS data for some reason.
>
> Am I doing something wrong? Has anyone else tried this successfully?
>
>
> Thanks!
>
> Matt Dralle
> RV-8 #82880 N998RV
>
>
>
Message 20
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|
| Subject: | Re: Z-14 v Z-14Fadec question |
Chris
On my Z14 I have a two position crossfeed switch. In the normal OFF
position the two systems run isolated from each other. That way a fault
in one system can't affect the other. In the ON position the crossfeed
contactor closes and parallels the batteries. I would only do that if
one alternator went dead and I wished to continue flying for sometime or
to get to a repair facility. In addition since I run very small
batteries on my system, the crossfeed contactor is wired to close
automatically any time I crank the engine to start it.
Ken
ej22 and dual EFI
Christopher Barber wrote:
> Last week I asked about C/B's tripping in the NON crossover mode and
> received a thoughtful answer. Thanks. Due to my growing but limited
> knowledge in this area it took a EE buddy of mine to figure out I had
> the crossover switch wired in a "mirrored" manner on my switch. Now, no
> more C/B tripping AND my alternators are charging properly. So, my
> initial calculations seemed to be ok as to wires etc....just not
> my translation as to switch connections. Ahhhhhh, non-the-less, it now
> feels nice.
>
> Now, I have a general question regarding the Z-14 schemes. For the
> crossover switch, up is to engage the starter with both batteries,
> center is non-crossover, normal mode with batteries working to power
> their bus independently and down is both batteries working together on
> both busses......If I understand correctly. So, in the Z-14 Fadec
> scheme, the start button engages the starter, then one position on the
> switch is independent alt to each bus and the other switch to have the
> systems work together? Or, is on position Off and the other switch
> position engaging both alternators to work together? If it is the
> second scenario, does that mean the two systems ALWAYS work together?
> If so, is there any reason not to have both systems always working
> together in the standard Z-14 scheme. I assume the FADEC label is since
> it is always engaged there is no pilot intervention. Just looking for a
> better understanding. Thanks.
>
> All the best,
>
> Chris Barber
> Houston
> Velocity SE with all electric Mazda 13b rotary
Message 21
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| Subject: | Follow-up on Carling switch failures. . . |
Vern,
When you say "Carling switches with loose rivets". How loose? Do you mean
wobbly terminals? I've checked all mine and most of the terminals can pivot
around the rivet until it hits a stop molded into the switch. I wonder if
this is tight enough. I would expect them to be tighter. I have a couple
Mil-spec switches and I don't think they pivot like this but will check
again next time I'm at the shop. Maybe this pivoting action is what is not
compatible with a high vibration environment.
Bevan
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Vern
Little
Sent: Friday, January 02, 2009 5:45 PM
Subject: Re: AeroElectric-List: Follow-up on Carling switch failures. . .
Bob's working hypothesis is that vibration is loosening the rivets on the
Carling switches. High current switches (strobe supplies, landing lights)
then exhibit overtemperature, increased resistance and thermal runaway.
Strobe supplies are probably the worst load in the aircraft because they are
effectively constant-power devices: as the input voltage decreases, the
current increases to compensate. This would be bad news if the switch is
resistive.
I've had two strobe switch failures, one landing light switch (actually a
wig-wag) failure, and one master switch failure (loose rivet but no charred
terminals). I have also received brand-new Carling switches with loose
terminals.
As an experiment, I replaced several Carling switches with Honeywell
switches and have been running them, monitoring for failures. I proposed
about 100 hours of testing before any conclusions could be made. This will
probably take several more months. I have check them in the interim, with
no problems.
If the experiment shows failure of the Honeywell switches, then the problem
may be attributed to my installation.
If the experiment does not show failure of the Honeywell switches, then the
problem may be attributed to the Carling switches sensitivity to vibration.
Bob has concluded that the Carling switches are fine, but should have
vibration decoupling loops to minimize vibration stresses on the terminals.
Good advice no matter who's switches are installed. Unfortunately, I don't
agree that the problem is that my (our) installations are incorrect.
Rather, I believe that the problem is that the Carling switches are
unusually sensitive to vibration.
In my next project, I am planning to use different switches, plus decoupling
loops. In addition, strobe and landing light loads will be isolated with
automotive relays which are generally more robust.
Vern Little
----- Original Message -----
From: Charles Brame <mailto:chasb@satx.rr.com>
Sent: Friday, January 02, 2009 4:42 PM
Subject: AeroElectric-List: Follow-up on Carling switch failures. . .
Bob,
While I can't disagree with your findings, if I remember the discussion
correctly, most of the failed B&C S700 switches were on strobe systems. I
think I kicked off the recent discussion with a failed switch on my strobe
system. I have several other B&C S700 series switches, all are wired similar
to the strobe switch, and none of them have failed or showed signs of heat
stress. Why should the switches on a strobe system be more failure prone?
Charlie Brame
RV 6A N11CB
San Antonio
----------------------------------------------------------------------------
Time: 06:31:17 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: AeroElectric-List: Follow-up on Carling switch failures . . .
A few weeks ago a discussion here on the List explored
a "rash" of failures in Carling switches sold by a number
of sources including B&C as their S700 series devices.
--------------------------------snip------------------------------
I can now comfortably suggest that failures we've
seen (and perceived as a sudden up-tick in frequency)
have been happening in these products for years. Further,
the smoked switches were not a failure on the part of the
manufacturer to meet electrical specifications nor
upon users for failure to respect those ratings.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matro
nics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 22
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|
To the Cad whizzes out there.
I'm taking advantage of the bad weather and trying to "professionalize" my
wiring diagrams using TurboCad. I'm starting to feel really old here cause
I'm so frustrated with this TurboCad program. I really want to make it work
and not get something else. I've imported a drawing from Bob's collection
in DWG format. All I want to do is erase a few lines, re-draw them slightly
elsewhere and copy a few fuses to add the extra circuits. Erase, copy, cut,
paste, snap are eluding me even though there are a bazillion tools all
around. Can I not just put a square around a section of the drawing, cut
and paste etc?
Jack Daniels is starting to tempt me!
Bevan
Message 23
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| Subject: | Re: Follow-up on Carling switch failures. . . |
At 06:42 PM 1/2/2009, you wrote:
>Bob,
>
>While I can't disagree with your findings, if I remember the
>discussion correctly, most of the failed B&C S700 switches were on
>strobe systems. I think I kicked off the recent discussion with a
>failed switch on my strobe system. I have several other B&C S700
>series switches, all are wired similar to the strobe switch, and
>none of them have failed or showed signs of heat stress. Why should
>the switches on a strobe system be more failure prone?
Certainly switches carrying higher currents
are more likely to exhibit effects of heating as
part of the trail of evidence. Loosening of
joints increases resistance joint which means
makes it get hotter. Heating piled on
top of loosening will exacerbate the rate of
failure . . . and cause more damage during the
transition from satisfactory to unsatisfactory
service.
The effects of current is a squared function.
For every doubling of current through a given
value of resistance, power dissipated in that
resistance goes up by a factor of 4. This means
that the strobe switch with say 7A of current
flowing through it is under 4x the stress of
same switch having 3.5A of current.
This stressing of rivets thing is not easy
to predict based on similarity of wiring. Also,
the hypothesis does not preclude quality assurance
issues with switches (although the spectrum of
reported failures spans years of date codes).
When looking for a place to "hang the hat" we
need to keep in mind that these switches and
their close cousins have millions of service-hours
dating back the time when fast-ons were incorporated
into the Cessna single-engine product line . . .
not to mention perhaps 100-1000 times that service
record throughout the total customer base for these
switches.
Manufacturing errors do happen but they tend to be
single lot issues that have a low probability of
finding their way into our exceedingly low-volume
market.
This leaves us with considering mis-application of
the devices (failure to observe limits/ratings)
or errors of installation.
Loose rivets a common to ALL the observed failures.
Given that several failures occurred with no
signs of heating, we're on pretty solid ground
to suggest that loosening is the the first event
in the failure chain followed by heating (where
current levels and duty-cycle are sufficiently
high to offer contributing stress).
Gee, why didn't Carling warn us about this? Where's
the prohibition for using rows of these switches
in front of tightly bundled wires? We're
less than 1% of their total market. Occurrence
of failures we've seen is a tiny fraction
of that market. It has probably never occurred to
their tech writers that such a prohibition is necessary/
useful. It also occurs to me that the tabs could be
subject to some side loads during installation of
those really tight PIDG fast-on terminals!
Now, we've been here before . . . thinking that we
understood all of the simple-ideas that fit the
observed facts. But until someone has new data and/or
an alternative logic, that's my story and I'm sticking
with it!
Bob . . .
-----------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
-----------------------------------------
Message 24
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|
| Subject: | Audio noise revisited |
At 03:46 PM 1/2/2009, you wrote:
>Ok, I sneaked out the 12V battery of my house alarm and did the test.
>I powered the Intercom from that separate battery but the noises are
>still there. I suppose, as you say, that a filter on the Intercom
>power wire won't solve my problem.
That would be my considered assessment.
>Regarding the A/F Ratio Monitor, I am pretty sure it makes one of
>the whines, so I have to put back the power filter that it used to
>have (the filter has gone west some time ago, way before installing
>the Intercom, and I took it away, to restore power to the Monitor,
>not knowing about the noise it causes). I believe that will
>eliminate that noise.
Good experiment. Do one thing at a time so you
don't hide the results of a non-useful action.
>
>The remaining problem now is coming from the COMM Radio. That other
>whine comes on and off whenever I turn the radio on and off. I even
>tried powering the radio from a separate battery and no joy.
When are you hearing these noises. Is the engine
running and all volume controls set for normal
operation?
>Should I put the filter on the Radio's power line?
>What do you suggest?
I can tell you that many a $14m airplane has some
noises in the headphones when sitting on the ground,
engines off and volume controls turned up. The
significance for most if not all these "undesirables"
goes away in flight.
Are you certain that what you're hearing really
NEEDS to be eliminated?
Bob . . .
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 25
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|
| Subject: | Re: Follow-up on Carling switch failures. . . |
Hey Bevan.
I would consider a terminal that easily pivots to be loose. It's
certainly not gas-tight, and may exhibit troubles later on.
In my opinion, I would watch these switches carefully, and don't put any
more stress on the rivets (use a decoupling loop on the wire).
I had an avtech recommend soldering the tabs to the rivets, but since I
don't know what this does to the temper of the internals, I would not do
it.
Vern
----- Original Message -----
From: B Tomm
To: aeroelectric-list@matronics.com
Sent: Friday, January 02, 2009 6:34 PM
Subject: RE: AeroElectric-List: Follow-up on Carling switch failures.
. .
Vern,
When you say "Carling switches with loose rivets". How loose? Do you
mean wobbly terminals? I've checked all mine and most of the terminals
can pivot around the rivet until it hits a stop molded into the switch.
I wonder if this is tight enough. I would expect them to be tighter. I
have a couple Mil-spec switches and I don't think they pivot like this
but will check again next time I'm at the shop. Maybe this pivoting
action is what is not compatible with a high vibration environment.
Bevan
-------------------------------------------------------------------------
-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Vern
Little
Sent: Friday, January 02, 2009 5:45 PM
To: aeroelectric-list@matronics.com
Subject: Re: AeroElectric-List: Follow-up on Carling switch failures.
. .
Bob's working hypothesis is that vibration is loosening the rivets on
the Carling switches. High current switches (strobe supplies, landing
lights) then exhibit overtemperature, increased resistance and thermal
runaway. Strobe supplies are probably the worst load in the aircraft
because they are effectively constant-power devices: as the input
voltage decreases, the current increases to compensate. This would be
bad news if the switch is resistive.
I've had two strobe switch failures, one landing light switch
(actually a wig-wag) failure, and one master switch failure (loose rivet
but no charred terminals). I have also received brand-new Carling
switches with loose terminals.
As an experiment, I replaced several Carling switches with Honeywell
switches and have been running them, monitoring for failures. I
proposed about 100 hours of testing before any conclusions could be
made. This will probably take several more months. I have check them
in the interim, with no problems.
If the experiment shows failure of the Honeywell switches, then the
problem may be attributed to my installation.
If the experiment does not show failure of the Honeywell switches,
then the problem may be attributed to the Carling switches sensitivity
to vibration.
Bob has concluded that the Carling switches are fine, but should have
vibration decoupling loops to minimize vibration stresses on the
terminals. Good advice no matter who's switches are installed.
Unfortunately, I don't agree that the problem is that my (our)
installations are incorrect. Rather, I believe that the problem is that
the Carling switches are unusually sensitive to vibration.
In my next project, I am planning to use different switches, plus
decoupling loops. In addition, strobe and landing light loads will be
isolated with automotive relays which are generally more robust.
Vern Little
----- Original Message -----
From: Charles Brame
To: AeroElectric List
Sent: Friday, January 02, 2009 4:42 PM
Subject: AeroElectric-List: Follow-up on Carling switch failures. .
.
Bob,
While I can't disagree with your findings, if I remember the
discussion correctly, most of the failed B&C S700 switches were on
strobe systems. I think I kicked off the recent discussion with a failed
switch on my strobe system. I have several other B&C S700 series
switches, all are wired similar to the strobe switch, and none of them
have failed or showed signs of heat stress. Why should the switches on a
strobe system be more failure prone?
Charlie Brame
RV 6A N11CB
San Antonio
-------------------------------------------------------------------------
---
Time: 06:31:17 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: AeroElectric-List: Follow-up on Carling switch failures .
. .
A few weeks ago a discussion here on the List explored
a "rash" of failures in Carling switches sold by a number
of sources including B&C as their S700 series devices.
--------------------------------snip------------------------------
I can now comfortably suggest that failures we've
seen (and perceived as a sudden up-tick in frequency)
have been happening in these products for years. Further,
the smoked switches were not a failure on the part of the
manufacturer to meet electrical specifications nor
upon users for failure to respect those ratings.
Bob . . .
----------------------------------------)
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( a thing wrong, gives it a superficial )
( appearance of being right . . . )
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Message 26
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| Subject: | Follow-up on Carling switch failures. . . |
Yes, I am considering contacting the vendor to see if I can return them, and
change to Milspec switches throughout. I don't really want them for a few
bucks savings and if the vendor gets enough back, perhaps they will
offer/recommend a better product.
Bevan
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Vern
Little
Sent: Friday, January 02, 2009 9:04 PM
Subject: Re: AeroElectric-List: Follow-up on Carling switch failures. . .
Hey Bevan.
I would consider a terminal that easily pivots to be loose. It's certainly
not gas-tight, and may exhibit troubles later on.
In my opinion, I would watch these switches carefully, and don't put any
more stress on the rivets (use a decoupling loop on the wire).
I had an avtech recommend soldering the tabs to the rivets, but since I
don't know what this does to the temper of the internals, I would not do it.
Vern
----- Original Message -----
From: B Tomm <mailto:fvalarm@rapidnet.net>
Sent: Friday, January 02, 2009 6:34 PM
Subject: RE: AeroElectric-List: Follow-up on Carling switch failures. . .
Vern,
When you say "Carling switches with loose rivets". How loose? Do you mean
wobbly terminals? I've checked all mine and most of the terminals can pivot
around the rivet until it hits a stop molded into the switch. I wonder if
this is tight enough. I would expect them to be tighter. I have a couple
Mil-spec switches and I don't think they pivot like this but will check
again next time I'm at the shop. Maybe this pivoting action is what is not
compatible with a high vibration environment.
Bevan
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Vern
Little
Sent: Friday, January 02, 2009 5:45 PM
Subject: Re: AeroElectric-List: Follow-up on Carling switch failures. . .
Bob's working hypothesis is that vibration is loosening the rivets on the
Carling switches. High current switches (strobe supplies, landing lights)
then exhibit overtemperature, increased resistance and thermal runaway.
Strobe supplies are probably the worst load in the aircraft because they are
effectively constant-power devices: as the input voltage decreases, the
current increases to compensate. This would be bad news if the switch is
resistive.
I've had two strobe switch failures, one landing light switch (actually a
wig-wag) failure, and one master switch failure (loose rivet but no charred
terminals). I have also received brand-new Carling switches with loose
terminals.
As an experiment, I replaced several Carling switches with Honeywell
switches and have been running them, monitoring for failures. I proposed
about 100 hours of testing before any conclusions could be made. This will
probably take several more months. I have check them in the interim, with
no problems.
If the experiment shows failure of the Honeywell switches, then the problem
may be attributed to my installation.
If the experiment does not show failure of the Honeywell switches, then the
problem may be attributed to the Carling switches sensitivity to vibration.
Bob has concluded that the Carling switches are fine, but should have
vibration decoupling loops to minimize vibration stresses on the terminals.
Good advice no matter who's switches are installed. Unfortunately, I don't
agree that the problem is that my (our) installations are incorrect.
Rather, I believe that the problem is that the Carling switches are
unusually sensitive to vibration.
In my next project, I am planning to use different switches, plus decoupling
loops. In addition, strobe and landing light loads will be isolated with
automotive relays which are generally more robust.
Vern Little
----- Original Message -----
From: Charles Brame <mailto:chasb@satx.rr.com>
Sent: Friday, January 02, 2009 4:42 PM
Subject: AeroElectric-List: Follow-up on Carling switch failures. . .
Bob,
While I can't disagree with your findings, if I remember the discussion
correctly, most of the failed B&C S700 switches were on strobe systems. I
think I kicked off the recent discussion with a failed switch on my strobe
system. I have several other B&C S700 series switches, all are wired similar
to the strobe switch, and none of them have failed or showed signs of heat
stress. Why should the switches on a strobe system be more failure prone?
Charlie Brame
RV 6A N11CB
San Antonio
----------------------------------------------------------------------------
Time: 06:31:17 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: AeroElectric-List: Follow-up on Carling switch failures . . .
A few weeks ago a discussion here on the List explored
a "rash" of failures in Carling switches sold by a number
of sources including B&C as their S700 series devices.
--------------------------------snip------------------------------
I can now comfortably suggest that failures we've
seen (and perceived as a sudden up-tick in frequency)
have been happening in these products for years. Further,
the smoked switches were not a failure on the part of the
manufacturer to meet electrical specifications nor
upon users for failure to respect those ratings.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
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