Today's Message Index:
----------------------
1. 03:26 AM - Re: Dynon's D10A (rd2@evenlink.com)
2. 03:28 AM - Re: Re: Small Video Display (was Fire (rd2@evenlink.com.Indication.Probe_)
3. 04:42 AM - Re: Re: Small Video Display (was Fire Indication (Doug Gray)
4. 05:17 AM - Heated pitot (newbie to the group) (tomcostanza@comcast.net)
5. 05:47 AM - Re: Re: Small Video Display (was Fire (Dave Morris \)
6. 07:22 AM - Re: Heated pitot (Eric M. Jones)
7. 08:10 AM - Re: Small Video Display NITS (Jim Stone)
8. 10:11 AM - (mchristian@canetics.com)
9. 10:27 AM - Re: Re: Small Video Display (was Fire Indication Probe_ (John W. Cox)
10. 12:27 PM - Re: Routing Antenna Leads (Robert L. Nuckolls, III)
11. 12:33 PM - Advanced Aircraft Antenna Vs Bob Archer. (EuropaXSA276@aol.com)
12. 01:21 PM - Alternator Question (Mickey Coggins)
13. 01:46 PM - Re: Alternator Question (Hinde, Frank George (Corvallis))
14. 01:55 PM - Re: Advanced Aircraft Antenna Vs Bob Archer. (Franz Fux)
15. 01:58 PM - Re: Alternator Question (ivorphillips)
16. 02:47 PM - Re: Re: Small Video Display (was Fire Indication Probe_ (Kevin Horton)
17. 03:08 PM - Re: Alternator Question (Mickey Coggins)
18. 03:24 PM - Re: Alternator Question (Matt Prather)
19. 05:14 PM - Re: Re: Heated pitot (courierboy@earthlink.net)
20. 05:57 PM - Re: More than 1 audio source into the Intercom Music Input - (Bill Denton)
21. 08:29 PM - Re: Z-13/Z-30 (Robert L. Nuckolls, III)
22. 11:28 PM - OVP thoughts (Rob W M Shipley)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: rd2@evenlink.com
Mike
You're right, the 337 hurdle. I'll try to feel out the local FDSDO.
Not sure if the existence of an already approved 337 for same aircraft
elsewhere could be of any help for easier approval.
Rumen
do not archive
_____________________Original message __________________________
(received from Mike Larkin; Date: 02:54 PM 8/15/2005
-0700)
--> AeroElectric-List message posted by: "Mike Larkin" <mlas@cox.net>
I have flown behind the D-10 and find it to be better and more reliable
then steam gauges. On one flight I had a vacuum pump failure and was
left with the Dynon or the turn and bank. I used the Dynon for the ILS
approach instead of the certified turn and bank. The problem you will
have is getting the field approval to install that unit in a certified
airplane. It is possible, but I don't think it will be easy. I do know
that the "Letter Groups" are taking a hard look at some of these units
as a backup for certified airplanes.
Mike Larkin
Lancair Legacy
TS-11
Kitfox 4
-----Original Message-----
------snip-----
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Small Video Display (was Fire |
Indication Probe_
--> AeroElectric-List message posted by: rd2@evenlink.com Indication Probe_
Thanks John. Will take a look at this as soon as I can take a breath from
computer problems at work :(
Rumen
do not archive
_____________________Original message __________________________
(received from John W. Cox; Date: 03:39 PM 8/15/2005
-0700)
--> AeroElectric-List message posted by: "John W. Cox"
<johnwcox@pacificnw.com>
Here is a website for a product used to digitally record inflight video
from 4 onboard lipstick cameras in our Red Star aircraft. The four
inputs are directed through a combiner into the 40gb storage unit. It
takes the high g's and shock forces and captures entire flight data
through plenty of imagery. It includes a touch-screen monitor. You can
view all four cams or select just one.
It may meet the requirement.
<http://www.dbciglobalsource.com/PVR%20380.htm>
John Cox
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Eric
M. Jones
Subject: AeroElectric-List: Re: Small Video Display (was Fire Indication
Probe_
--> AeroElectric-List message posted by: "Eric M. Jones"
<emjones@charter.net>
--> AeroElectric-List message posted by: rd2@evenlink.com
>can you suggest a small display for the videocam ? - cameras and small
and
>cheap, but I heven't been able to come up with a convenient display
>(preferably to fit into a standard panel opening). Rumen
For example--
(copy this onto one line)
http://cgi.ebay.com/5-6-HEADREST-MONITOR-LCD-TV-VIDEO-SCREEN-CLEAR-NEW-H
OT_W0QQitemZ5797503878QQcategoryZ94847QQrdZ1QQcmdZViewItem
I don't know specifically of one that will fit into a standard panel
opening. But we live in a world of abundance. Perhaps someone can
suggest
something.
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
(508) 764-2072
Do Not Archive
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Small Video Display (was Fire Indication |
Probe_
--> AeroElectric-List message posted by: Doug Gray <dgra1233@bigpond.net.au>
Dave Morris \"BigD\" Indication Probe_ wrote:
> --> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
Indication Probe_
>
> I just bought a Lilliput 8" VGA display that is designed for the burgeoning
> SUV kiddie movie market. (Soapbox) I think we will be seeing more and more
> adults crashing their SUVs into each other because they were watching the
> "kiddie movies" while driving. (/Soapbox)
How many NITs (Cd per square metre) in brightness do these displays have?
To be sunlight readable I expect 450-500 minimum.
Doug Gray
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Heated pitot (newbie to the group) |
1.25 RCVD_NUMERIC_HELO Received: contains an IP address used for HELO
--> AeroElectric-List message posted by: tomcostanza@comcast.net
Hi all,
I have the opportunity to purchase a 24v heated pitot at a very reasonable
price. Has anyone converted one of these to 12V? Has anyone used a 24v unit as-is
with a 12V system? I'm not going to use it in ifr icing conditions, but I
have been in a situation where dew in the pitot froze at altitude, and made landing
very exciting!
Thanks
-Tom
Hi all,
I have the opportunity to purchase a 24v heated pitot at a very reasonable
price. Has anyone converted one of these to 12V? Has anyone used a 24v unit as-is
with a 12V system? I'm not going to use it inifr icing conditions, butI have
been ina situation where dew in the pitot froze at altitude, and made landing
very exciting!
Thanks
-Tom
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Small Video Display (was Fire |
Indication Probe_
--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
Indication Probe_
I don't know the specs. I only know that they are putting them in cars,
and in my side-by-side comparisons, it wasn't as bright as my Sony Vaio
laptop display.
Dave Morris
At 06:40 AM 8/16/2005, you wrote:
>--> AeroElectric-List message posted by: Doug Gray <dgra1233@bigpond.net.au>
>
>
>Dave Morris \"BigD\" Indication Probe_ wrote:
> > --> AeroElectric-List message posted by: "Dave Morris \"BigD\""
> <BigD@DaveMorris.com> Indication Probe_
> >
> > I just bought a Lilliput 8" VGA display that is designed for the
> burgeoning
> > SUV kiddie movie market. (Soapbox) I think we will be seeing more and
> more
> > adults crashing their SUVs into each other because they were watching the
> > "kiddie movies" while driving. (/Soapbox)
>
>
>How many NITs (Cd per square metre) in brightness do these displays have?
>To be sunlight readable I expect 450-500 minimum.
>Doug Gray
>
>
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Heated pitot |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
--> AeroElectric-List message posted by: tomcostanza@comcast.net
>I have the opportunity to purchase a 24v heated pitot at a very reasonable
>price. Has anyone converted one of these to 12V? Has anyone used a 24v unit
>as-is
>with a 12V system? I'm not going to use it in ifr icing conditions, but I
>have been in a situation where dew in the pitot froze at altitude, and made
>landing
>very exciting!
> Thanks
> -Tom
Welcome Tom,
Let's say the 24V pitot tube draws 12A. That means that the resistance
should be 2 ohms and the power 288 W. If you run this at 12 V, the current
draw will be only 6A and the power 72W. If it were my 12V airplane, and I
planned no intentional suicidal flights into icing conditions, I'd do it.
On the other hand the pitot might be set up with two heaters in series.
(I've seen this). If so, you can change it to parallel. You can replace the
24V heaters with 12V heaters on some units too.
For several years I've been New-England-Ice-Storm testing a thermostatic
pitot tube for my Glastar that operates at 36W max. One of the odd
characteristics is that it heats up only to 30 degC, so it doesn't even get
to body temperature. When there is no need for heat, it draws only about 3W
(~250 mA). It's on my website if you're interested.
http://www.periheliondesign.com/downloads/thermopitot.pdf
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
(508) 764-2072
"Every act of conscious learning requires the willingness to suffer an
injury to one's self-esteem...."
-Thomas Szasz
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Small Video Display NITS |
--> AeroElectric-List message posted by: "Jim Stone" <jsto1@tampabay.rr.com>
FYI, the LCD brightness in NITs probably should be in the 700 range for
sunlight viewing. An IPAQ PDA has about 1000 NITs. My PCFlight Systems
MFD is 1500 NITs and has no problems in bright FL sunlight.
Jim Stone
Jabiru J450
Clearwater FL
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dave
Morris "BigD"
Subject: Re: AeroElectric-List: Re: Small Video Display (was Fire
Indication Probe_
--> AeroElectric-List message posted by: "Dave Morris \"BigD\""
--> <BigD@DaveMorris.com> Indication Probe_
I don't know the specs. I only know that they are putting them in cars,
and in my side-by-side comparisons, it wasn't as bright as my Sony Vaio
laptop display.
Dave Morris
At 06:40 AM 8/16/2005, you wrote:
>--> AeroElectric-List message posted by: Doug Gray
>--> <dgra1233@bigpond.net.au>
>
>
>Dave Morris \"BigD\" Indication Probe_ wrote:
> > --> AeroElectric-List message posted by: "Dave Morris \"BigD\""
> <BigD@DaveMorris.com> Indication Probe_
> >
> > I just bought a Lilliput 8" VGA display that is designed for the
> burgeoning
> > SUV kiddie movie market. (Soapbox) I think we will be seeing more
> > and
> more
> > adults crashing their SUVs into each other because they were
> > watching the "kiddie movies" while driving. (/Soapbox)
>
>
>How many NITs (Cd per square metre) in brightness do these displays
>have? To be sunlight readable I expect 450-500 minimum. Doug Gray
>
>
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: mchristian@canetics.com
Aircraft Spruce has a display and camera combo - FLYCAM.
>----- ------- Original Message ------- -----
>From: AeroElectric-List Digest Server
><aeroelectric-list-digest@matronics.com>
>To: AeroElectric-List Digest List
><aeroelectric-list-digest@matronics.com>
>Sent: Mon, 15 Aug 2005 23:55:21
>
>*
>
> ==================================================
>
> Online Versions of Today's List Digest Archive
> ==================================================
>
>
>Today's complete AeroElectric-List Digest can also
>be found in either of the
>two Web Links listed below. The .html file
>includes the Digest formatted
>in HTML for viewing with a web browser and features
>Hyperlinked Indexes
>and Message Navigation. The .txt file includes the
>plain ASCII version
>of the AeroElectric-List Digest and can be viewed
>with a generic text editor
>such as Notepad or with a web browser.
>
>HTML Version:
>
>
>http://www.matronics.com/digest/aeroelectric-list/D
>igest.AeroElectric-List.2005-08-15.html
>
>Text Version:
>
>
>http://www.matronics.com/digest/aeroelectric-list/D
>igest.AeroElectric-List.2005-08-15.txt
>
>
> ================================================
> EMail Version of Today's List Digest Archive
> ================================================
>
>
>
>---------------------------------------------------
>-------
> AeroElectric-List Digest
>Archive
> ---
> Total Messages Posted Mon
>08/15/05: 24
>
>---------------------------------------------------
>-------
>
>
>Today's Message Index:
>----------------------
>
> 1. 06:08 AM - Re: Re: Fire Indication Probe
>(rd2@evenlink.com)
> 2. 07:24 AM - More than 1 audio source into
>the Intercom Music Input -
>(rd2@evenlink.com.revisited)
> 3. 07:30 AM - Re: Re: KX-155 Power connections
>help! (Matthew Brandes)
> 4. 07:32 AM - Re: Fire Indication Probe (Eric
>M. Jones)
> 5. 09:12 AM - Re: Small Video Display (was
>Fire Indication Probe_ (Eric M. Jones)
> 6. 09:39 AM - Re: Re: Fire Indication Probe
>(sgettings@cfl.rr.com)
> 7. 10:14 AM - Re: Re: Fire Indication Probe
>(Chuck Jensen)
> 8. 11:28 AM - Re: Fire Indication Probe (Eric
>M. Jones)
> 9. 12:16 PM - Re: Re: Fire Indication Probe
>(Mickey Coggins)
> 10. 12:23 PM - Re: Re: Fire Indication Probe
>(Mark Cochran)
> 11. 01:00 PM - Re: Re: Re: Fire Indication
>Probe (sgettings@cfl.rr.com)
> 12. 01:02 PM - Re: SPAM::Split washers vs.
>Nyloc nuts (Rogers, Bob J.)
> 13. 01:18 PM - Re: SPAM::Split washers vs.
>Nyloc nuts (Craig P. Steffen)
> 14. 02:34 PM - Re: Re: Re: Fire Indication
>Probe (Matt Prather)
> 15. 02:55 PM - Re: Dynon's D10A (Mike Larkin)
> 16. 03:41 PM - Re: Re: Small Video Display (was
>Fire Indication Probe_ (John W. Cox)
> 17. 04:20 PM - Re: SPAM::Split washers vs.
>Nyloc nuts (Robert Forbes)
> 18. 04:35 PM - Re: SPAM::Split washers vs.
>Nyloc nuts (Alex Peterson)
> 19. 04:54 PM - Re: Re: Small Video Display (was
>Fire (Dave Morris \)
> 20. 04:58 PM - Re: SPAM::Split washers vs.
>Nyloc nuts (John W. Cox)
> 21. 05:28 PM - Re: Split washers vs. Nyloc nuts
> (Ken)
> 22. 05:43 PM - Re: Re: Small Video Display (was
>Fire Indication Probe_ (John Schroeder)
> 23. 07:21 PM - Re: OVP thoughts. (Ken)
> 24. 11:06 PM - Re: Re: Small Video Display (was
>Fire Indication (Mickey Coggins)
>
>
>
>________________________________ Message 1
>_____________________________________
>
>
>Time: 06:08:32 AM PST US
>From: rd2@evenlink.com
>Subject: Re: AeroElectric-List: RE: Fire Indication
>Probe
>
>--> AeroElectric-List message posted by:
>rd2@evenlink.com
>
>Eric,
>
>can you suggest a small display for the videocam ?
>- cameras and small and
>cheap, but I heven't been able to come up with a
>convenient display
>(preferably to fit into a standard panel opening).
>
>Rumen
>
>_____________________Original message
>__________________________
> (received from Eric M. Jones;
>Date: 08:25 PM 8/14/2005
>-0400)
>--> AeroElectric-List message posted by: "Eric M.
>Jones" <emjones@charter.net>
>
>Fire detectors usually operate by detecting the UV
>radiation given off by a
>flame. Only a fire in the cowl will show any UV.
>The detectors are simple
>and easy to get from Allied Electronics, etc., and
>the additional circuitry
>not hard to make. Ideally several of them should
>cover all areas of
>interest.
>
>You could use a video camera--they are so cheap a
>little airplane could have
>a dozen of them for every conceivable
>task--including fire detection.
>
> Has anybody experimented with home smoke detectors
>under the cowl?
>
>And finally two words--E Bay. There are several
>"Flame detectors" for sale
>cheap right now. Flame detectors (or "no flame"
>detectors) are used in some
>furnaces, and I think they are UV photoelectric for
>the most part.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>"Democracy must be something more than two wolves
>and a sheep voting on what
>to have for dinner."
> - James Bovard
>
>
>________________________________ Message 2
>_____________________________________
>
>
>Time: 07:24:02 AM PST US
>From: rd2@evenlink.com.revisited
>Subject: AeroElectric-List: More than 1 audio
>source into the Intercom Music Input
>-
> revisited
>
>--> AeroElectric-List message posted by:
>rd2@evenlink.com revisited
>
>
>I talked to PS Engineering about the solution.
>The PS Engineering PS 1000 II has an input
>impedance of 47 kOhm (music
>input) (as probably do most intercoms, at least in
>that range). So, it is
>not likely that the intercom would load the output
>of any source, because
>it isn't likely that the source would have an
>output impedance of 47 kohm
>or higher.
>But in order for the audio sources not to affect
>ea. other, PS Eng.
>suggested to add isolation resistors to ea. source.
>We are basically
>building a signal mixer. They said I could start
>with 500 ohm per source
>(in series) and increase until signal starts to
>attenuate (or until signal
>is not unacceptably attenuated).
>
>For practical purposes, I will be adding the
>necessary number of 3.5mm
>receptacles (equaling the number of needed inputs)
>with 1 kOhm resistors in
>series in ea. signal path and will test the
>intercom with all available
>signal sources active and connected to the inputs.
>That way the sources
>will have isolation of 2 kohm between ea. other. I
>might actually do the
>test with 10 kohm pots in each path initially to
>determine which is the
>highest resistance that does not attenuate the
>audio of the source, then
>replacing the pots with resistors.
>
>Rumen
>
>
>________________________________ Message 3
>_____________________________________
>
>
>Time: 07:30:38 AM PST US
>From: "Matthew Brandes" <matthew@n523rv.com>
>Subject: AeroElectric-List: Re: RE: KX-155 Power
>connections help!
>
>--> AeroElectric-List message posted by: "Matthew
>Brandes" <matthew@n523rv.com>
>
>I haven't figured out how to dim the display yet...
>the install manual
>doesn't show a pin for dimming.. but the document
>that bob has on his site
>shows that pin 24 is used for 14v light dimming....
>so I'm kinda confused
>still. I'd be concerned about dimming this circuit
>since it runs power out
>to the CDI. At least the radio works at this
>point!
>
>Matthew Brandes,
>Van's RV-9A (Wiring)
>#90569
>http://www.n523rv.com <http://www.n523rv.com/>
>
>EAA Chapter 1329 President
>EAA Chapter 868 Web Editor
>
>--> AeroElectric-List message posted by: "Jim
>Baker" <jlbaker@telepath.com
><mailto:jlbaker@telepath.com?subject=Re:%20RE:%20KX
>-155%20Power%20connection
>s%20help!&replyto=200508141946.j7EJkugF000396@mail.
>matronics.com> >
>
>> The only thing I can think of is that the
>switched OUT pins are
>> controlled by the on/off switch at the faceplate
>and are fed from the
>> 14v power in pins (14 and R). The switched IN
>pins must feed
>power to
>> the display. (Which is why my display worked
>when I put power on
>them
>> directly from the bus.)
>
>> Sure seems like an odd way to power the display!
>
>
>If I understand this correctly, not if you want to
>be able to dim the
>display independently of the auto-dim feature?
>
>
>Jim Baker
>580.788.2779
>'71 SV, 492TC
>Elmore City, OK
>
>
>________________________________ Message 4
>_____________________________________
>
>
>Time: 07:32:27 AM PST US
>From: "Eric M. Jones" <emjones@charter.net>
>Subject: AeroElectric-List: RE: Fire Indication
>Probe
>
>--> AeroElectric-List message posted by: "Eric M.
>Jones" <emjones@charter.net>
>
>--> AeroElectric-List message posted by: "George
>Braly" <gwbraly@gami.com>
>
>
>>Eric,
>>UV or Infra Red ?
>>Regards, George
>
>George,
>
>There are advantages and disadvantages to the
>various approaches.
>
>UV--Clearly a step function. Flames, sparks and
>various energetic phenomena
>emit UV. In a normally functioning engine, zero UV
>is emitted even if it
>melts. The Hamamatsu UV Trons are insensitive to
>sunlight without any
>filtering (remarkable). These are very common and
>inexpensive detectors. Can
>be triggered by coronas and arc welders....but
>hey!....nothing's free.
>Google "Hamamatsu UV Tron".
>
>Visible--The engine exhaust gets brighter, but
>that's about it in the dark.
>The problems with visible fire alarms is that
>flying west at sunset might
>trigger photoelectric alarms. so you have to shield
>them carefully. Easy to
>use but lots of technical issues to resolve.
>
>IR--Similar to visible but easier to use. Flames
>produce much more IR than
>just hot pipes. Filters are used to look at only
>certain wavelengths. Makers
>if IR Flame detectors seem to be secretive about
>spectral characteristics.
>Some fire situations seem to demand certain
>spectral sensitivities.
>(Things-you-never-knew note: They sell fireproof
>IR/UV fire detectors, also
>detectors that are heated to keep them free from
>ice.)
>
>Combo units--Many units take the advantages of IR
>and UV and make
>combination IR/UV units.
>
>Hamamatsu UV Trons are so good and so cheap that
>almost all brand-name flame
>detectors are just Hamamatsus-in-a-box.
>
>I like the cotton string on Microswitch idea.
>Super-Glue vaporizes at a
>certain temperature, so you could craft a temp
>alarm with some glue and a
>microswitch. All the technology from old water
>sprinklers would probably
>work too.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>"Hey, it ain't rocket surgery!"
>--anonymous
>
>
>________________________________ Message 5
>_____________________________________
>
>
>Time: 09:12:25 AM PST US
>From: "Eric M. Jones" <emjones@charter.net>
>Subject: AeroElectric-List: Re: Small Video Display
>(was Fire Indication Probe_
>
>--> AeroElectric-List message posted by: "Eric M.
>Jones" <emjones@charter.net>
>
>--> AeroElectric-List message posted by:
>rd2@evenlink.com
>
>>can you suggest a small display for the videocam ?
>- cameras and small and
>>cheap, but I heven't been able to come up with a
>convenient display
>>(preferably to fit into a standard panel opening).
>Rumen
>
>For example--
>
>(copy this onto one line)
>http://cgi.ebay.com/5-6-HEADREST-MONITOR-LCD-TV-VID
>EO-SCREEN-CLEAR-NEW-HOT_W0QQitemZ5797503878QQcatego
>ryZ94847QQrdZ1QQcmdZViewItem
>
>I don't know specifically of one that will fit into
>a standard panel
>opening. But we live in a world of abundance.
>Perhaps someone can suggest
>something.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>Do Not Archive
>
>
>________________________________ Message 6
>_____________________________________
>
>
>Time: 09:39:30 AM PST US
>From: sgettings@cfl.rr.com
>Subject: Re: AeroElectric-List: RE: Fire Indication
>Probe
>
>--> AeroElectric-List message posted by:
>sgettings@cfl.rr.com
>
>
>----- Original Message -----
>From: "Eric M. Jones" <emjones@charter.net>
>Subject: AeroElectric-List: RE: Fire Indication
>Probe
>
>> --> AeroElectric-List message posted by: "Eric M.
>
>Jones"
>> <emjones@charter.net>
>> --> AeroElectric-List message posted by: "George
>Braly"
>> <gwbraly@gami.com>
>>
>> >Eric,
>> >UV or Infra Red ?
>> >Regards, George
>>
>> George,
>>
>> There are advantages and disadvantages to the
>various approaches.
>>
>> UV--Clearly a step function. Flames, sparks and
>various energetic
>> phenomena
>> emit UV. In a normally functioning engine, zero
>UV
>is emitted even
>> if it
>> melts. The Hamamatsu UV Trons are insensitive to
>sunlight without
>> any
>> filtering (remarkable). These are very common and
>
>inexpensive
>> detectors. Can
>> be triggered by coronas and arc welders....but
>hey!....nothing's
>> free.
>> Google "Hamamatsu UV Tron".
>>
>> Visible--The engine exhaust gets brighter, but
>that's about it in
>> the dark.
>> The problems with visible fire alarms is that
>flying west at sunset
>> might
>> trigger photoelectric alarms. so you have to
>shield them carefully.
>> Easy to
>> use but lots of technical issues to resolve.
>>
>> IR--Similar to visible but easier to use. Flames
>produce much more
>> IR than
>> just hot pipes. Filters are used to look at only
>certain
>> wavelengths. Makers
>> if IR Flame detectors seem to be secretive about
>spectral
>> characteristics.
>> Some fire situations seem to demand certain
>spectral sensitivities.
>> (Things-you-never-knew note: They sell fireproof
>IR/UV fire
>> detectors, also
>> detectors that are heated to keep them free from
>ice.)
>>
>> Combo units--Many units take the advantages of IR
>
>and UV and make
>> combination IR/UV units.
>>
>> Hamamatsu UV Trons are so good and so cheap that
>almost all brand-
>> name flame
>> detectors are just Hamamatsus-in-a-box.
>>
>> I like the cotton string on Microswitch idea.
>Super-Glue vaporizes
>> at a
>> certain temperature, so you could craft a temp
>alarm with some glue
>> and a
>> microswitch. All the technology from old water
>sprinklers would
>> probably
>> work too.
>>
>> Regards,
>> Eric M. Jones
>> www.PerihelionDesign.com
>> 113 Brentwood Drive
>> Southbridge MA 01550-2705
>> (508) 764-2072
>>
>> "Hey, it ain't rocket surgery!"
>> --anonymous
>>
>>
>This is my first post, so hopefully I'll get it
>right.
>
>Isn't another simple option a thermal overload
>relay
>(such as a bimetallic or solid state), thermistor,
>or thermal fuse? Radio shack has thermal fuses of
>various temperatures for less than $2. A fused
>circuit would have to turn on a light or other
>warning device when it became open, but this is
>also
>pretty simple.
>
>Scott Gettings
>
>
>________________________________ Message 7
>_____________________________________
>
>
>Time: 10:14:34 AM PST US
>Subject: RE: AeroElectric-List: RE: Fire Indication
>Probe
>From: "Chuck Jensen" <cjensen@dts9000.com>
>
>--> AeroElectric-List message posted by: "Chuck
>Jensen" <cjensen@dts9000.com>
>
>Scott,
>
>If your subsequent posts are as good as your first,
>I think you've
>already gotten the hang of it.
>
>The downside of the detectors, alarm on a string,
>thermal fuse, et al,
>is they are on/off, 0/1. No way of trending or
>knowing if it's a false
>alarm...just that you got an alarm. Can you say
>'idiot lights' that was
>so popular in cars of yesteryear. No information,
>just an alert.
>
>On the other hand, a temp readout allows you to
>trend a problem, assess
>the magnitude of it and still be given an alarm via
>the preset alarm
>point. Simple and cheap...though Eric raises
>important points arguing
>for some alternative detection technology, even if
>they don't give rate
>information.
>
>Chuck
>
>
>Scott Gettings wrote...
>
>This is my first post, so hopefully I'll get it
>right.
>
>Isn't another simple option a thermal overload
>relay
>(such as a bimetallic or solid state), thermistor,
>or thermal fuse? Radio shack has thermal fuses of
>various temperatures for less than $2. A fused
>circuit would have to turn on a light or other
>warning device when it became open, but this is
>also
>pretty simple.
>
>
>________________________________ Message 8
>_____________________________________
>
>
>Time: 11:28:40 AM PST US
>From: "Eric M. Jones" <emjones@charter.net>
>Subject: AeroElectric-List: Re: Fire Indication
>Probe
>
>--> AeroElectric-List message posted by: "Eric M.
>Jones" <emjones@charter.net>
>
>--> AeroElectric-List message posted by:
>sgettings@cfl.rr.com
>
>>This is my first post, so hopefully I'll get it
>right.
>
>Scott, welcome to the fray.
>
>>Isn't another simple option a thermal overload
>relay
>>(such as a bimetallic or solid state), thermistor,
>
>>or thermal fuse? Radio shack has thermal fuses of
>
>>various temperatures for less than $2. A fused
>>circuit would have to turn on a light or other
>>warning device when it became open, but this is
>also
>>pretty simple. Scott Gettings
>
>Scott, you are inferring that high temps must equal
>a fire. That may or may
>not be so. Does a small fire equal very high
>temps--especially where you
>have the sensor? Maybe. Maybe not. Would hot
>exhaust pipes trigger an
>overtemp sensor quicker than a small fuel-leak
>fire? Almost certainly.
>
>A couple UV Trons and the Space Shuttle Challenger
>could have brought
>Christa McAuliffe back to teach school. But it
>would have required ten
>zillion thermal detectors to sense that errant
>flame.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>"The problem with the world is that only the
>intelligent people want to be
>smarter, and only the good people want to improve."
>
> - E.Stobblehouse
>
>
>________________________________ Message 9
>_____________________________________
>
>
>Time: 12:16:18 PM PST US
>From: Mickey Coggins <mick-matronics@rv8.ch>
>Subject: Re: AeroElectric-List: Re: Fire
>Indication Probe
>
>--> AeroElectric-List message posted by: Mickey
>Coggins <mick-matronics@rv8.ch>
>
>> A couple UV Trons and the Space Shuttle
>Challenger could have brought
>> Christa McAuliffe back to teach school. But it
>would have required ten
>> zillion thermal detectors to sense that errant
>flame.
>
>I like the way they did it on SpaceShipOne -
>winding all that wire
>around the casing, and if any burns through, it
>cuts off the NO2.
>Could have worked on the shuttle SRBs, I think. Of
>course, there
>is no shutting those things off, but I guess they
>could have "ejected"
>them.
>
>--
>Mickey Coggins
>http://www.rv8.ch/
>#82007 finishing
>
>
>________________________________ Message 10
>____________________________________
>
>
>Time: 12:23:39 PM PST US
>From: "Mark Cochran" <mac@atac.com>
>Subject: RE: AeroElectric-List: Re: Fire
>Indication Probe
>
>--> AeroElectric-List message posted by: "Mark
>Cochran" <mac@atac.com>
>
>Eric,
>Once the solid rocket boosters have been ignited,
>the earliest shuttle abort
>profile (that I've heard of) is the RTLS or return
>to launch site profile.
>This may not occur until about 2+20, and after
>solid rocket burn-out.
>Unfortunately, the seven crewmembers of the
>Challenger were doomed the
>moment the solid rocket motors were ignited. I'd be
>interested to know if
>there is an earlier abort profile.
>
>Do Not Archive
>Mark Cochran
>
>-----Original Message-----
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of Eric M.
>Jones
>Subject: AeroElectric-List: Re: Fire Indication
>Probe
>
>--> AeroElectric-List message posted by: "Eric M.
>Jones"
><emjones@charter.net>
>
>--> AeroElectric-List message posted by:
>sgettings@cfl.rr.com
>
>>This is my first post, so hopefully I'll get it
>right.
>
>Scott, welcome to the fray.
>
>>Isn't another simple option a thermal overload
>relay
>>(such as a bimetallic or solid state), thermistor,
>
>>or thermal fuse? Radio shack has thermal fuses of
>
>>various temperatures for less than $2. A fused
>>circuit would have to turn on a light or other
>>warning device when it became open, but this is
>also
>>pretty simple. Scott Gettings
>
>Scott, you are inferring that high temps must equal
>a fire. That may or may
>not be so. Does a small fire equal very high
>temps--especially where you
>have the sensor? Maybe. Maybe not. Would hot
>exhaust pipes trigger an
>overtemp sensor quicker than a small fuel-leak
>fire? Almost certainly.
>
>A couple UV Trons and the Space Shuttle Challenger
>could have brought
>Christa McAuliffe back to teach school. But it
>would have required ten
>zillion thermal detectors to sense that errant
>flame.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>"The problem with the world is that only the
>intelligent people want to be
>smarter, and only the good people want to improve."
>
> - E.Stobblehouse
>
>
>________________________________ Message 11
>____________________________________
>
>
>Time: 01:00:08 PM PST US
>From: sgettings@cfl.rr.com
>Subject: Re: RE: AeroElectric-List: Re: Fire
>Indication Probe
>
>--> AeroElectric-List message posted by:
>sgettings@cfl.rr.com
>
>
>----- Original Message -----
>From: Mark Cochran <mac@atac.com>
>Subject: RE: AeroElectric-List: Re: Fire
>Indication
>Probe
>
>> --> AeroElectric-List message posted by: "Mark
>Cochran" <mac@atac.com>
>>
>> Eric,
>> Once the solid rocket boosters have been ignited,
>
>the earliest
>> shuttle abort
>> profile (that I've heard of) is the RTLS or
>return
>to launch site
>> profile.This may not occur until about 2+20, and
>after solid rocket
>> burn-out.
>> Unfortunately, the seven crewmembers of the
>Challenger were doomed the
>> moment the solid rocket motors were ignited. I'd
>be interested to
>> know if
>> there is an earlier abort profile.
>>
>> Do Not Archive
>> Mark Cochran
>>
>> -----Original Message-----
>> From:
>owner-aeroelectric-list-server@matronics.com
>>
>[mailto:owner-aeroelectric-list-server@matronics.co
>m]
>On Behalf Of
>> Eric M.
>> Jones
>> To: aeroelectric-list@matronics.com
>> Subject: AeroElectric-List: Re: Fire Indication
>Probe
>>
>> --> AeroElectric-List message posted by: "Eric M.
>
>Jones"
>> <emjones@charter.net>
>>
>> --> AeroElectric-List message posted by:
>sgettings@cfl.rr.com
>>
>> >This is my first post, so hopefully I'll get it
>right.
>>
>> Scott, welcome to the fray.
>>
>> >Isn't another simple option a thermal overload
>relay
>> >(such as a bimetallic or solid state),
>thermistor,
>> >or thermal fuse? Radio shack has thermal fuses
>of
>> >various temperatures for less than $2. A fused
>> >circuit would have to turn on a light or other
>> >warning device when it became open, but this is
>also
>> >pretty simple. Scott Gettings
>>
>> Scott, you are inferring that high temps must
>equal a fire. That
>> may or may
>> not be so. Does a small fire equal very high
>temps--especially
>> where you
>> have the sensor? Maybe. Maybe not. Would hot
>exhaust pipes trigger
>> an
>> overtemp sensor quicker than a small fuel-leak
>fire? Almost certainly.
>>
>> A couple UV Trons and the Space Shuttle
>Challenger
>could have
>> brought
>> Christa McAuliffe back to teach school. But it
>would have required
>> ten
>> zillion thermal detectors to sense that errant
>flame.
>>
>> Regards,
>> Eric M. Jones
>> www.PerihelionDesign.com
>> 113 Brentwood Drive
>> Southbridge MA 01550-2705
>> (508) 764-2072
>>
>> "The problem with the world is that only the
>intelligent people
>> want to be
>> smarter, and only the good people want to
>improve."
>> - E.Stobblehouse
>>
>>
>
>Sounds like an interesting fray!
>
>My current plans are to incorporate 4-6 thermal
>fuses in series in strategic locations around my
>(composite, pusher) cowling. A redundant, but
>separate, loop will allow a confirmation of any one
>
>blown fuse, as fuses close together should not fail
>
>together except from heat. This addresses the
>single-point failure issue. So if both "fire"
>lights come on, it is almost certainly real!
>
>Any temps over a certain level in these locations
>(without radiant visibility to the exhaust, of
>course) should represent a major over-temp problem,
>
>and will be considered an engine compartment fire
>and treated accordingly.
>
>True, a very small fire that had not yet reached
>one
>of the thermal fuses would not be detected. In a
>pusher, this is still a lot of early warning for
>$30-$50.
>
>Scott Gettings
>
>
>________________________________ Message 12
>____________________________________
>
>
>Time: 01:02:17 PM PST US
>Subject: RE: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>From: "Rogers, Bob J." <BRogers@fdic.gov>
>
>--> AeroElectric-List message posted by: "Rogers,
>Bob J." <BRogers@fdic.gov>
>
>If you are going to have your fuel pumps in your
>engine compartment, I
>would suggest you use an all-metal self locking nut
>instead of a nyloc
>nut. The heat from the engine compartment may
>weaken or melt the nylon
>in the nyloc nut and allow it to loosen. The self
>locking nuts in my
>engine compartment are all metal. If you have a
>self locking nut, a
>flat washer should be sufficient.
>
>-----Original Message-----
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of
>Mickey Coggins
>Subject: SPAM::AeroElectric-List: Split washers vs.
>Nyloc nuts
>
>--> AeroElectric-List message posted by: Mickey
>Coggins
><mick-matronics@rv8.ch>
>
>Hi,
>
>My fuel pumps came with what look like brass nuts
>and a split lock washer. These are used to hold
>on the ring terminals.
>
>I've read that these split lock washers are not
>recommended in an aviation application. I would
>like to replace these with a standard flat washer
>and a nyloc nut. Does this seem like a good idea?
>
>Photo here:
>
>http://www.rv8.ch/images/articles/20050814081622711
>_1_original.JPG
>
>Thanks for any feedback.
>
>Mickey
>
>--
>Mickey Coggins
>http://www.rv8.ch/
>#82007 finishing
>
>
>________________________________ Message 13
>____________________________________
>
>
>Time: 01:18:21 PM PST US
>Subject: Re: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>From: "Craig P. Steffen" <craig@craigsteffen.net>
>
>--> AeroElectric-List message posted by: "Craig P.
>Steffen" <craig@craigsteffen.net>
>
>
>> If you are going to have your fuel pumps in your
>engine compartment, I
>> would suggest you use an all-metal self locking
>nut instead of a nyloc
>> nut. The heat from the engine compartment may
>weaken or melt the nylon
>> in the nyloc nut and allow it to loosen. The
>self locking nuts in my
>> engine compartment are all metal. If you have a
>self locking nut, a
>> flat washer should be sufficient.
>
>I don't know if it's a codified regulation, but my
>understanding is
>that the FAA considers nylon locknuts forward of
>the firewall a big
>no-no. All-metal locknuts (or castle nuts) ONLY in
>the engine
>compartment.
>
>--
>craig@craigsteffen.net
>public key available at
>http://www.craigsteffen.net/GPG/
>current goal: use a CueCat scanner to inventory my
>books
>career goal: be the first Vorlon Time Lord
>
>
>________________________________ Message 14
>____________________________________
>
>
>Time: 02:34:16 PM PST US
>Subject: Re: RE: AeroElectric-List: Re: Fire
>Indication Probe
>From: "Matt Prather" <mprather@spro.net>
>
>--> AeroElectric-List message posted by: "Matt
>Prather" <mprather@spro.net>
>
>On a pusher (at least), maybe it would be worth
>looking at the difference
>between inlet air and the outlet air temperature.
>Any more than a certain
>delta indicates something bad is going on. An easy
>microcontroller
>project. You might have to include an offset table
>for powersetting to
>make it really good. It might not be possible to
>detect a small fire
>while at low powersetting (in a long descent for
>instance) without it.
>Other information about engine/installation health
>could be garnered from
>comparing inlet temp vs outlet temp too - a way to
>detect a baffle leak
>would show up as an extraordinarily low delta-T.
>This idea is probably
>too complex, but a lot would be learned from
>setting it up and looking at
>the data.
>
>One good thing about pushers is that the natural
>airflow typically pulls
>hot gasses away from structural and soft pink
>stuff. It might be tougher
>to detect, but it's probably somewhat less likely
>to hurt you. A number
>of pushers have suffered in flight fires, and I
>think most of them have
>landed with no injury to anyone aboard. Further,
>pushers have suffered a
>variety of leaks of oil and fuel that most
>assuredly would have caused a
>fire on a conventional plane, but only
>'inconvenience' (engine out) on the
>pusher. An engine compartment oil or fuel leak in
>an RV is really bad.
>
>
>Regards,
>
>Matt-
>VE N34RD, C150 N714BK
>
>
>________________________________ Message 15
>____________________________________
>
>
>Time: 02:55:23 PM PST US
>From: "Mike Larkin" <mlas@cox.net>
>Subject: RE: AeroElectric-List: Dynon's D10A
>
>--> AeroElectric-List message posted by: "Mike
>Larkin" <mlas@cox.net>
>
>I have flown behind the D-10 and find it to be
>better and more reliable
>then steam gauges. On one flight I had a vacuum
>pump failure and was
>left with the Dynon or the turn and bank. I used
>the Dynon for the ILS
>approach instead of the certified turn and bank.
>The problem you will
>have is getting the field approval to install that
>unit in a certified
>airplane. It is possible, but I don't think it
>will be easy. I do know
>that the "Letter Groups" are taking a hard look at
>some of these units
>as a backup for certified airplanes.
>
>
>Mike Larkin
>
>Lancair Legacy
>TS-11
>Kitfox 4
>
>-----Original Message-----
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of
>rd2@evenlink.com
>Subject: Re: AeroElectric-List: Dynon's D10A
>
>--> AeroElectric-List message posted by:
>rd2@evenlink.com
>
>Thanks Dan,
>
>this is exactly the kind od response I was looking
>for.
>
>BTW:
>
>>
>I seriously doubt Dynon will ever encourage anybody
>to use their EFIS
>for
>IFR. Nor do I. But I do it.
>>
>
>Similarly, does Garmin encourage anybody to use
>their panel page (gpsmap
>196/296/396) for ifr? ;) But it could save one's
>hide in case of
>emergency.
>If Dynon is as reliable (MTBF etc.) as the handheld
>gps', then it
>proibably
>is a better deal @ $2195 than sporty's (also
>non-certified) electric #
>2060A Gyro ($1595). Not saying that sporty's is
>unreliable, merely
>noticing
>that dynon offers a host of functions vs. very the
>functions found in
>sporty's product.
>Or, thinking again, maybe garmin's deal is the best
>one, considering the
>number of functions offered and same
>ifr/vfr/certification issues.
>
>Rumen
>
>
>--
>
>
>--
>8/15/2005
>
>
>________________________________ Message 16
>____________________________________
>
>
>Time: 03:41:14 PM PST US
>Subject: RE: AeroElectric-List: Re: Small Video
>Display (was Fire Indication Probe_
>From: "John W. Cox" <johnwcox@pacificnw.com>
>
>--> AeroElectric-List message posted by: "John W.
>Cox" <johnwcox@pacificnw.com>
>
>Here is a website for a product used to digitally
>record inflight video
>from 4 onboard lipstick cameras in our Red Star
>aircraft. The four
>inputs are directed through a combiner into the
>40gb storage unit. It
>takes the high g's and shock forces and captures
>entire flight data
>through plenty of imagery. It includes a
>touch-screen monitor. You can
>view all four cams or select just one.
>
>It may meet the requirement.
><http://www.dbciglobalsource.com/PVR%20380.htm>
>John Cox
>
>-----Original Message-----
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of Eric
>M. Jones
>Subject: AeroElectric-List: Re: Small Video Display
>(was Fire Indication
>Probe_
>
>--> AeroElectric-List message posted by: "Eric M.
>Jones"
><emjones@charter.net>
>
>--> AeroElectric-List message posted by:
>rd2@evenlink.com
>
>>can you suggest a small display for the videocam ?
>- cameras and small
>and
>>cheap, but I heven't been able to come up with a
>convenient display
>>(preferably to fit into a standard panel opening).
>Rumen
>
>For example--
>
>(copy this onto one line)
>http://cgi.ebay.com/5-6-HEADREST-MONITOR-LCD-TV-VID
>EO-SCREEN-CLEAR-NEW-H
>OT_W0QQitemZ5797503878QQcategoryZ94847QQrdZ1QQcmdZV
>iewItem
>
>I don't know specifically of one that will fit into
>a standard panel
>opening. But we live in a world of abundance.
>Perhaps someone can
>suggest
>something.
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
>
>Do Not Archive
>
>
>________________________________ Message 17
>____________________________________
>
>
>Time: 04:20:53 PM PST US
>From: "Robert Forbes" <rwforbes@slic.com>
>Subject: Re: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>
>--> AeroElectric-List message posted by: "Robert
>Forbes" <rwforbes@slic.com>
>
>Folks, check your regs. No nylon locking nuts are
>to be used in the engine
>compartment.
>
>RWF
>----- Original Message -----
>From: "Rogers, Bob J." <BRogers@fdic.gov>
>Subject: RE: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>
>
>> --> AeroElectric-List message posted by: "Rogers,
>Bob J."
>> <BRogers@fdic.gov>
>>
>> If you are going to have your fuel pumps in your
>engine compartment, I
>> would suggest you use an all-metal self locking
>nut instead of a nyloc
>> nut. The heat from the engine compartment may
>weaken or melt the nylon
>> in the nyloc nut and allow it to loosen. The
>self locking nuts in my
>> engine compartment are all metal. If you have a
>self locking nut, a
>> flat washer should be sufficient.
>>
>> -----Original Message-----
>> From:
>owner-aeroelectric-list-server@matronics.com
>>
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of
>> Mickey Coggins
>> To: aeroelectric-list@matronics.com
>> Subject: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>>
>> --> AeroElectric-List message posted by: Mickey
>Coggins
>> <mick-matronics@rv8.ch>
>>
>> Hi,
>>
>> My fuel pumps came with what look like brass nuts
>
>> and a split lock washer. These are used to hold
>> on the ring terminals.
>>
>> I've read that these split lock washers are not
>> recommended in an aviation application. I would
>> like to replace these with a standard flat washer
>
>> and a nyloc nut. Does this seem like a good idea?
>
>>
>> Photo here:
>>
>>
>http://www.rv8.ch/images/articles/20050814081622711
>_1_original.JPG
>>
>> Thanks for any feedback.
>>
>> Mickey
>>
>> --
>> Mickey Coggins
>> http://www.rv8.ch/
>> #82007 finishing
>>
>>
>> --
>>
>>
>
>
>________________________________ Message 18
>____________________________________
>
>
>Time: 04:35:23 PM PST US
>From: "Alex Peterson" <alexpeterson@earthlink.net>
>Subject: RE: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>
>--> AeroElectric-List message posted by: "Alex
>Peterson" <alexpeterson@earthlink.net>
>
>
>>
>> Folks, check your regs. No nylon locking nuts
>are to be used in the
>> engine
>> compartment.
>>
>> RWF
>
>Robert,
>
>Point us to the specific reg and we will check it.
>
>Obviously, from a practical viewpoint there is a
>temperature limit for the
>nylon lock nuts. I don't recall that limit right
>now, but most of the engine
>compartment is below that limit. Clearly, exhaust
>systems or parts near it
>should have all metal locknuts.
>
>Alex Peterson
>RV6A N66AP 654 hours
>Maple Grove, MN
>
>
>________________________________ Message 19
>____________________________________
>
>
>Time: 04:54:22 PM PST US
>From: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
> Indication Probe_
>Subject: Re: AeroElectric-List: Re: Small Video
>Display (was Fire
> Indication Probe_
>
>--> AeroElectric-List message posted by: "Dave
>Morris \"BigD\"" <BigD@DaveMorris.com>
>Indication Probe_
>
>I just bought a Lilliput 8" VGA display that is
>designed for the burgeoning
>SUV kiddie movie market. (Soapbox) I think we will
>be seeing more and more
>adults crashing their SUVs into each other because
>they were watching the
>"kiddie movies" while driving. (/Soapbox)
>
>Anyway, it's going to be part of my glass cockpit
>if it passes the aircraft
>band radiation tests I'm about to subject it to.
>I'm also looking into
>putting a ball camera under the fuselage to help me
>guide my taildragger
>down the runway without doing S-turns.
>http://www.davemorris.com/PhotoViewer.cfm?Subdirect
>ory=Glass%20Cockpit
>
>You can get these for under $200 on eBay or from
>these sources:
>http://www.case-mod.com/store/lilliput-809gl80npct-
>lcd-touch-screen-vga-monitor-charcoal-p-1206.html?o
>sCsid=cb0bdd5178a256a8f34215b93cdd1a0a
>http://www.logicsupply.com/default.php/cPath/52
>http://www.mp3car.com/store/index.php?cPath=25
>
>Dave Morris
>www.MyGlassCockpit.com
>
>
>At 11:11 AM 8/15/2005, you wrote:
>>--> AeroElectric-List message posted by: "Eric M.
>Jones" <emjones@charter.net>
>>
>>--> AeroElectric-List message posted by:
>rd2@evenlink.com
>>
>> >can you suggest a small display for the videocam
>? - cameras and small and
>> >cheap, but I heven't been able to come up with a
>convenient display
>> >(preferably to fit into a standard panel
>opening). Rumen
>>
>>For example--
>>
>>(copy this onto one line)
>>http://cgi.ebay.com/5-6-HEADREST-MONITOR-LCD-TV-VI
>DEO-SCREEN-CLEAR-NEW-HOT_W0QQitemZ5797503878QQcateg
>oryZ94847QQrdZ1QQcmdZViewItem
>>
>>I don't know specifically of one that will fit
>into a standard panel
>>opening. But we live in a world of abundance.
>Perhaps someone can suggest
>>something.
>>
>>Regards,
>>Eric M. Jones
>>www.PerihelionDesign.com
>>113 Brentwood Drive
>>Southbridge MA 01550-2705
>>(508) 764-2072
>>
>>Do Not Archive
>>
>>
>
>
>________________________________ Message 20
>____________________________________
>
>
>Time: 04:58:40 PM PST US
>Subject: RE: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>From: "John W. Cox" <johnwcox@pacificnw.com>
>
>--> AeroElectric-List message posted by: "John W.
>Cox" <johnwcox@pacificnw.com>
>
>Robert, to take the information one step farther.
>The quote is from the
>EAA builder's bible AC43.13-1B Change I, Chapter 7,
>Section 4. Nuts,
>subparagraph f. "Fiber or nylon locknuts are
>constructed with an
>unthreaded fiber or nylon locking insert held
>securely in place. The
>fiber or nylon insert provides the locking action
>because it has a
>smaller diameter than the nut. Fiber or nylon
>self-locking nuts are not
>installed in areas where temperatures exceed 250 F.
> After the nut has
>been tightened, make sure the bolt or stud has at
>least one thread
>showing past the nut. DO NOT reuse a fiber or
>nylon locknut, if the nut
>cannot meet the minimum prevailing torque values.
>(See table 7-2.)"
>
>I am sure everyone reads a passage each night
>before bedtime. I'll bet
>they even make flashcards of Tables 7.1 and Tables
>7-2.
>
>Looks like you are keeping current. Want to take a
>bet on how many
>builders reuse nylon locknuts without checking
>torque?
>
>In the absence of a manufacturer's directive, the
>AC43.13-1A is it.
>Using metal locknuts the temperature thresholds are
>450, 800 and 1200
>degrees. Now can someone other than Dan provide
>assistance in which
>nuts to use above 450 degrees?
>
>Great post. Now back to my IA exam.
>
>John - KUAO
>DO NOT ARCHIVE
>
>-----Original Message-----
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.co
>m] On Behalf Of
>Robert Forbes
>Subject: Re: SPAM::AeroElectric-List: Split washers
>vs. Nyloc nuts
>
>--> AeroElectric-List message posted by: "Robert
>Forbes"
><rwforbes@slic.com>
>
>Folks, check your regs. No nylon locking nuts are
>to be used in the
>engine
>compartment.
>
>RWF
>
>
>________________________________ Message 21
>____________________________________
>
>
>Time: 05:28:38 PM PST US
>From: Ken <klehman@albedo.net>
>Subject: Re: AeroElectric-List: Split washers vs.
>Nyloc nuts
>
>--> AeroElectric-List message posted by: Ken
><klehman@albedo.net>
>
>Sorry John but I don't really know.
>It seems to me that there would be enough spring in
>the metal that it
>could be used again if necessary but it would be
>preferable to use a new
>one to also make sure it was clean.
>Ken
>
>John Schroeder wrote:
>
> >--> AeroElectric-List message posted by: "John
>Schroeder"
><jschroeder@perigee.net>
> >
> >Ken -
> >
> >Does one have to replace the internal star
>washers after they are used
> >once? Seems that it would be easy to mash the
>teeth flat after torquing
> >the nut & washe once.
> >
> >Thanks,
> >
> >John
> >
> >On Sun, 14 Aug 2005 10:19:04 -0400, Ken
><klehman@albedo.net> wrote:
> >
> >
> >
> >>I think from the archives and the book you will
>see a preference for
> >>internal star washers and brass or phosphor
>bronze hardware but again
> >>I'd try not to add another type of metal to the
>joint if possible.
> >>
> >>
> >
> >
> >
> >
>
>
>________________________________ Message 22
>____________________________________
>
>
>Time: 05:43:01 PM PST US
>Subject: Re: AeroElectric-List: Re: Small Video
>Display (was Fire Indication Probe_
>From: "John Schroeder" <jschroeder@perigee.net>
>
>--> AeroElectric-List message posted by: "John
>Schroeder" <jschroeder@perigee.net>
>
>John -
>
>What is a fair price for one of these and where is
>a source?
>
>Many thanks,
>
>John
>
>> On Mon, 15 Aug 2005 15:39:56 -0700, John W. Cox
><johnwcox@pacificnw.com>
>> wrote:
>
>> Here is a website for a product used to digitally
>record inflight video
>> from 4 onboard lipstick cameras in our Red Star
>aircraft.
>
>
>--
>
>
>________________________________ Message 23
>____________________________________
>
>
>Time: 07:21:20 PM PST US
>From: Ken <klehman@albedo.net>
>Subject: Re: AeroElectric-List: OVP thoughts.
>
>--> AeroElectric-List message posted by: Ken
><klehman@albedo.net>
>
>Hi Rob
>
>Someone else originally posted this link to Jim
>Weir's site where he
>uses one or more crowbar OVMs to pop the fuse(s) to
>the avionics. I
>think this is reasonable for VFR operations. It is
>not useful for those
>of us with electric dependant engines.
>http://www.rst-engr.com/kitplanes/KP0109/KP0109.htm
>
>You might want a handheld VHF and GPS though as
>then you lose main
>battery power to the avionics. You could use CB's
>and reset them after
>killing the alternator but I hate relying on
>multi-step manual
>procedures when under stress.
>
>On my machine I did not use battery contactors but
>all the non engine
>loads do route through a contactor to a fuse block.
>An OVM could also be
>wired to trip that contactor and protect the
>avionics. That presents a
>single point of failure for all avionics power
>though. No main battery
>power to the avionics during a trip is the problem
>with these methods so
>it is not a great solution for IFR where you want
>uninterupted power. It
>might have merit for expensive devices that have
>internal battery
>backups and warnings though.
>
>Ken
>
>Rob W M Shipley wrote:
>
>>--> AeroElectric-List message posted by: "Rob W M
>Shipley" <rob@robsglass.com>
>>
>>I'll start with humble apologies to all who have
>lost patience with this
>>topic. For those of us still having an interest
>in any resolution which may
>>be found I would like to ask the following.
>>
>>Given that many of us would like to use IR
>alternators for cost and
>>convenience reasons the issue becomes one of how
>we can protect our avionics
>>with a high degree of certainty.
>>1) Until a few days ago when Ken Lehman wrote
>about "an OVM module of some
>>kind protecting the supply to that $15k radio rack
>that you mentioned." I
>>hadn't seen anyone mention this as a solution,
>although I have wondered
>>about it myself. Why couldn't this prove a good
>way to save our wallets
>>leaving the alternator to be shut down manually?
>>2) Load dump (back emf ?) seems to be the
>alternator killer when crowbared
>>under load. Bob wrote "Actually, the neatest way
>(lowest parts count) to
>>run the
>>
>>
>snip
>
>
>________________________________ Message 24
>____________________________________
>
>
>Time: 11:06:15 PM PST US
>From: Mickey Coggins <mick-matronics@rv8.ch>
>Subject: Re: AeroElectric-List: Re: Small Video
>Display (was Fire Indication
> Probe_
>
>--> AeroElectric-List message posted by: Mickey
>Coggins <mick-matronics@rv8.ch>
>
>John,
>
>Thanks for the link to this PVR. What kind of
>combiner are
>you using? That seems like the hard part...
>
>Thanks,
>Mickey
>
>John W. Cox wrote:
>> --> AeroElectric-List message posted by: "John W.
>Cox" <johnwcox@pacificnw.com>
>>
>> Here is a website for a product used to digitally
>record inflight video
>> from 4 onboard lipstick cameras in our Red Star
>aircraft. The four
>> inputs are directed through a combiner into the
>40gb storage unit. It
>> takes the high g's and shock forces and captures
>entire flight data
>> through plenty of imagery. It includes a
>touch-screen monitor. You can
>> view all four cams or select just one.
>>
>> It may meet the requirement.
>> <http://www.dbciglobalsource.com/PVR%20380.htm>
>> John Cox
>
>
>--
>Mickey Coggins
>http://www.rv8.ch/
>#82007 finishing
>
>
>
>
>
>===========
>browse
>Subscriptions page,
>FAQ,
>t
>===========
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Small Video Display (was Fire Indication Probe_ |
--> AeroElectric-List message posted by: "John W. Cox" <johnwcox@pacificnw.com>
USB camera fed to a typical USB 2.0 combiner.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Mickey Coggins
Subject: Re: AeroElectric-List: Re: Small Video Display (was Fire
Indication Probe_
--> AeroElectric-List message posted by: Mickey Coggins
<mick-matronics@rv8.ch>
John,
Thanks for the link to this PVR. What kind of combiner are
you using? That seems like the hard part...
Thanks,
Mickey
John W. Cox wrote:
> --> AeroElectric-List message posted by: "John W. Cox"
<johnwcox@pacificnw.com>
>
> Here is a website for a product used to digitally record inflight
video
> from 4 onboard lipstick cameras in our Red Star aircraft. The four
> inputs are directed through a combiner into the 40gb storage unit. It
> takes the high g's and shock forces and captures entire flight data
> through plenty of imagery. It includes a touch-screen monitor. You
can
> view all four cams or select just one.
>
> It may meet the requirement.
> <http://www.dbciglobalsource.com/PVR%20380.htm>
> John Cox
--
Mickey Coggins
http://www.rv8.ch/
#82007 finishing
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Routing Antenna Leads |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 02:44 PM 8/14/2005 -0700, you wrote:
>--> AeroElectric-List message posted by: "Tinne maha" <tinnemaha@hotmail.com>
>
>Hello Bob & List,
>
>I'm installing my Garmin panel mounted GPS/Comm (GNC 250-XL) with
>Perihelion's RG+142 coax in a tube & fabric aircraft. The two antennas are
>about 5' apart. The installation manual says to route the GPS cable 'as far
>as possible' away from the Comm cable. Before reading that part I was
>inclined to route them right next to each other. Now I don't really know
>what to do.
>
>I couldn't find anything on this specific question in the archives. Is
>there a minimum distance for good radio performance?
>
> Thanks,
> Grant Krueger
If they're both modern coax (RG400 or RG142) you can
run them right together with any wires in any system.
Bob . . .
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Advanced Aircraft Antenna Vs Bob Archer. |
--> AeroElectric-List message posted by: EuropaXSA276@aol.com
Hello Group:
I'm looking for recommendations on the COM, NAV and Transponder antenna's
made by Advanced Aircraft compared to Bob Archer designs when used in a composite
aircraft.
Anyone with real life experience or opinion?
Thanks in advance.
Brian Skelly
Texas
Europa # A276 TriGear
See My build photos at:
http://www.europaowners.org/BrianS
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Alternator Question |
--> AeroElectric-List message posted by: Mickey Coggins <mick-matronics@rv8.ch>
Hi,
I've got a brand-new ND alternator, and when I
turn the pulley, I feel a bit of resistance
from time to time. It's the only alternator I've
got, so I'm not sure if this is normal or not.
It seems like it should turn very smoothly, with
only bearing friction.
Thanks for any hints.
Mickey
--
Mickey Coggins
http://www.rv8.ch/
#82007 finishing
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Alternator Question |
--> AeroElectric-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
And resistance from te bearing seal at the front...this can sqweak a
little when you fie=rst turn it.
Frank
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Mickey Coggins
Subject: AeroElectric-List: Alternator Question
--> AeroElectric-List message posted by: Mickey Coggins
--> <mick-matronics@rv8.ch>
Hi,
I've got a brand-new ND alternator, and when I turn the pulley, I feel a
bit of resistance from time to time. It's the only alternator I've got,
so I'm not sure if this is normal or not.
It seems like it should turn very smoothly, with only bearing friction.
Thanks for any hints.
Mickey
--
Mickey Coggins
http://www.rv8.ch/
#82007 finishing
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Advanced Aircraft Antenna Vs Bob Archer. |
--> AeroElectric-List message posted by: "Franz Fux" <franz@lastfrontierheli.com>
I don't have any experience in that field but I can sell you an Archer Com
antenna that I was going to mount in the wingtip. I since decided that I
will use a belly whip instead. Good price too.
Franz
RV7A
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of
EuropaXSA276@aol.com
Subject: AeroElectric-List: Advanced Aircraft Antenna Vs Bob Archer.
--> AeroElectric-List message posted by: EuropaXSA276@aol.com
Hello Group:
I'm looking for recommendations on the COM, NAV and Transponder antenna's
made by Advanced Aircraft compared to Bob Archer designs when used in a
composite
aircraft.
Anyone with real life experience or opinion?
Thanks in advance.
Brian Skelly
Texas
Europa # A276 TriGear
See My build photos at:
http://www.europaowners.org/BrianS
--
--
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Alternator Question |
--> AeroElectric-List message posted by: "ivorphillips" <ivor@ivorphillips.flyer.co.uk>
I have Two ND alternators 40 amp/60 amp, Both are totally smooth in every
direction,
A strip and check is in order!
Ivor Phillips
XS486 London UK
CM Installed, rudder cables complete,
undercarriage fitted brakes working
flap tube fitted
wing lift pins fitted,tiebar fitted instrument
panel being finalised,
----- Original Message -----
From: "Mickey Coggins" <mick-matronics@rv8.ch>
Subject: AeroElectric-List: Alternator Question
> --> AeroElectric-List message posted by: Mickey Coggins
> <mick-matronics@rv8.ch>
>
> Hi,
>
> I've got a brand-new ND alternator, and when I
> turn the pulley, I feel a bit of resistance
> from time to time. It's the only alternator I've
> got, so I'm not sure if this is normal or not.
>
> It seems like it should turn very smoothly, with
> only bearing friction.
>
> Thanks for any hints.
>
> Mickey
>
> --
> Mickey Coggins
> http://www.rv8.ch/
> #82007 finishing
>
>
>
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Small Video Display (was Fire Indication Probe_ |
--> AeroElectric-List message posted by: Kevin Horton <khorton01@rogers.com>
On 16 Aug 2005, at 08:46, Dave Morris BigD Indication Probe_ wrote:
> --> AeroElectric-List message posted by: "Dave Morris \"BigD\""
> <BigD@DaveMorris.com> Indication Probe_
>
> I don't know the specs. I only know that they are putting them in
> cars,
> and in my side-by-side comparisons, it wasn't as bright as my Sony
> Vaio
> laptop display.
>
I'm betting those cars don't have bubble canopys though, so the
displays wouldn't need to be as bright as you would need in an RV.
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://www.kilohotel.com/rv8
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Alternator Question |
--> AeroElectric-List message posted by: Mickey Coggins <mick-matronics@rv8.ch>
I think you are right - thanks for the info.
Mickey
> I have Two ND alternators 40 amp/60 amp, Both are totally smooth in every
> direction,
> A strip and check is in order!
>
>>
>>I've got a brand-new ND alternator, and when I
>>turn the pulley, I feel a bit of resistance
>>from time to time. It's the only alternator I've
>>got, so I'm not sure if this is normal or not.
>>
>>It seems like it should turn very smoothly, with
>>only bearing friction.
--
Mickey Coggins
http://www.rv8.ch/
#82007 finishing
do not archive
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Alternator Question |
--> AeroElectric-List message posted by: "Matt Prather" <mprather@spro.net>
By "time to time," do you mean that it offers resistance at particular
points in rotation of the shaft? It could be a number of things.. A bent
shaft. Brush contact area has excessive runout, or roughness. Bad
bearing.. Junk floating around in the unit. Maybe the two halves aren't
mated properly (magnifying a runout problem). Maybe the fan is grossly
out of round and contacting the housing in some places.
It could be that the unit just needs a little break-in turning, and after
100 revs it would be fine.
Alternators aren't difficult to disassemble (or reassemble), so a teardown
might be the way to go.
Let us know what you find..
Thanks,
Matt-
VE N34RD, C150 N714BK
> --> AeroElectric-List message posted by: Mickey Coggins
> <mick-matronics@rv8.ch>
>
> Hi,
>
> I've got a brand-new ND alternator, and when I
> turn the pulley, I feel a bit of resistance
> from time to time. It's the only alternator I've
> got, so I'm not sure if this is normal or not.
>
> It seems like it should turn very smoothly, with
> only bearing friction.
>
> Thanks for any hints.
>
> Mickey
>
> --
> Mickey Coggins
> http://www.rv8.ch/
> #82007 finishing
>
>
Message 19
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Heated pitot |
--> AeroElectric-List message posted by: courierboy@earthlink.net
Wow -
Nicely done.
All this and Leonard Cohen too . . ? ! !
You provide neat stuff and good commentary.
Thanks Eric -
Bill
do not archive
>--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
>--------snip-------------------
>For several years I've been New-England-Ice-Storm testing a thermostatic
>pitot tube for my Glastar that operates at 36W max. One of the odd
>characteristics is that it heats up only to 30 degC, so it doesn't even get
>to body temperature. When there is no need for heat, it draws only about 3W
>(~250 mA). It's on my website if you're interested.
>http://www.periheliondesign.com/downloads/thermopitot.pdf
>
>Regards,
>Eric M. Jones
>www.PerihelionDesign.com
>113 Brentwood Drive
>Southbridge MA 01550-2705
>(508) 764-2072
---------------snip-------------
Message 20
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: More than 1 audio source into the Intercom Music |
Input -
--> AeroElectric-List message posted by: "Bill Denton" <bdenton@bdenton.com>
Something to think about...
"The PS Engineering PS 1000 II has an input impedance of 47 kOhm (music
input)..."
Another thing that the music input typically has is some sort of "muting"
function, either partial, or full. The way this muting works, when the COM
input is active, the volume on the music input is lowered. Which would
result in the volume of the alarms also being lowered during COM
transmissions.
What I am considering doing is "mixing" all of my alarm outputs with the COM
output, and feeding them into the COM input, so there would be no muting. I
would then use the music input as a music input.
I'm considering building one of Bob's Audio Isolation Amps to do the mixing,
but if anyone knows of a reasonably priced "store-bought" unit I would
appreciate hearing about it...
Message 21
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 08:39 AM 6/8/2005 -0500, you wrote:
>--> AeroElectric-List message posted by: Paul Folbrecht
><paulfolbrecht@yahoo.com>
>
>Vern W. wrote:
>
> >--> AeroElectric-List message posted by: "Vern W." <vernw@ev1.net>
> >
> > My preference is for the Z-13 architecture, but I'm pretty sure it was
> >Bob N. himself who stated that the SD-8 MUST have a battery to excite it. It
> >will not power up by itself.
> > So what I have sort of settled on is the Z-13 plus the Z-30 additional
> >battery (very small, say 4 amp) which does three things: It gives the SD-8
> >something to lean on to get it started if need be, the small additional
> >battery can be use to keep (full voltage) power on my Lightspeed ignition
> >when starting, and if both the main alternator and the primary battery go
> >offline, the 4 amp battery with the SD-8 is plenty to keep all the important
> >systems (and then some) up and running as long as needed.
> > My big "problem" with just one battery is not the RG battery's
> >dependability in general, but the (very?) possible occurance of a broken
> >terminal. I know that's a "full bucket" as Bob says, but a broken battery
> >terminal definitely qualifies as a "single point of failure" which we are
> >all using as our baseline in electrical design.
> >
> >
>
>How about two batts *in parallel*? That is, straight Z-13 with no Z-30
>circuit but with two identical batts wired parallel. Eliminates the
>terminal concern and an open cell as well.
How about the failed battery contactor?
> But this doesn't seem to be
>a popular configuration. At least not from a search of the archives.
>What am I missing? A shorted cell would still be disastrous but that is
>far less likely and could be gotten around too. If I'm missing nothing
>with this idea, than Z-13 with the SD-8 is what I'll do.
If one is going to gather up concerns for open and shorted cells
in well maintained RG batteries, then open control wires, failed
master switches, loose nuts and bolts, and failed contactors should
all be added too . . .
> > I've seen some posters go a bit further and worry about scenarios of
> >multiple failures, but the probabability of any more than one critical
> >failure in a single flight is in the nth degree of possibility. If I lose my
> >main battery, my main alternator goes over voltage, the SD-8 won't start, I
> >start to smell smoke, and my one mag on the other side fails, and all this
> >happens exactly while I'm flying on top a mountain range, then I'm simply
> >going to assume that I have gotten a personal invitation from God to meet
> >Him face to face which will allow me to enjoy the ride down :-)
> >
Or perhaps you have Joe Btfsplk stowed away in your baggage
compartment . . . See:
http://www.bookofjoe.com/2005/02/joe_btfsplk.html
He rode with us on the Plymouth, MA seminar trip. Missed
connections outbound, got a smoking room a 1 a.m. with
not enough energy left to wrestle with the desk clerk,
temperature was in 90's with fog (humidity 100%),
a/c in meeting room was fritzed, slipped and went down
in shower for non-smoking room (buggered right arm . . .
a real handicap when you gotta wave your arms in front
of a class!), missed connections outbound and spent
night in Detroit, got home today 13 hrs late to learn
that DERs are going to give me a ration of stuff about
flying test equipment on customer airplane that I can't
fix without the data . . .
If it hadn't been for an exemplary bunch of seminar
attendees, I would have come home really bummed out.
All things considered . . . a great weekend!
However, if you check the baggage compartment before
departure and find the little guy in the black hat
is absent, then the vast majority of what we worry
about should be Wwwaaaaaayyyyyy down on the list of
concerns.
>
> >
>I made a similar comment in response to Bob earlier in this thread. :->
>Can't fight the big guy if he's got your number!
>
>
> > In the end, I'd be just as confident to fly with the Z-19 design as much
> >as the Z-13 + Z-30 design. While Z-19 is cheaper, it's a lot more weight
> >that I won't need in my RV7-A.
> > I'm not totally decided yet being that I won't have to start installing
> >a chosen system until later this Fall, but Z-13 + Z30 looks good to me. Now
> >if Bob would only add the Z-30 extra battery to the Z-13/SD-8 drawing and
> >show it as one sheet...
See http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdf/Z13-30.pdf
Bob . . .
Message 22
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "Rob W M Shipley" <rob@robsglass.com>
Hi Ken,
My apologies for not being complete in my question. My thought of shutting
down the primary supply to the avionics with a crowbar was with the
intention of using a separate ebus battery supply to take over.
Rob
Rob W M Shipley
N919RV (res) Fuselage .....still!
La Mesa, CA. (next to San Diego)
From: Ken <klehman@albedo.net>
Subject: Re: AeroElectric-List: OVP thoughts.
--> AeroElectric-List message posted by: Ken <klehman@albedo.net>
Hi Rob
Someone else originally posted this link to Jim Weir's site where he
uses one or more crowbar OVMs to pop the fuse(s) to the avionics. I
think this is reasonable for VFR operations. It is not useful for those
of us with electric dependant engines.
http://www.rst-engr.com/kitplanes/KP0109/KP0109.htm
You might want a handheld VHF and GPS though as then you lose main
battery power to the avionics. You could use CB's and reset them after
killing the alternator but I hate relying on multi-step manual
procedures when under stress.
On my machine I did not use battery contactors but all the non engine
loads do route through a contactor to a fuse block. An OVM could also be
wired to trip that contactor and protect the avionics. That presents a
single point of failure for all avionics power though. No main battery
power to the avionics during a trip is the problem with these methods so
it is not a great solution for IFR where you want uninterupted power. It
might have merit for expensive devices that have internal battery
backups and warnings though.
Ken
--
I am using the free version of SPAMfighter for private users.
It has removed 5924 spam emails to date.
Paying users do not have this message in their emails.
Try www.SPAMfighter.com for free now!
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|