Today's Message Index:
----------------------
1. 05:42 AM - Re: Re: 10339 Bryk (John Schroeder)
2. 06:10 AM - Re: Milestone in history of the 'Connection (Mark Phillips)
3. 06:46 AM - Re: Milestone in history of the 'Connection (Robert L. Nuckolls, III)
4. 06:52 AM - Re: Re: 10339 Bryk (Robert L. Nuckolls, III)
5. 06:57 AM - Re: Conflictiong Shield Termination (Robert L. Nuckolls, III)
6. 07:16 AM - (Gary Casey)
7. 07:44 AM - Solid State Gyro Components (Kevin Faris)
8. 07:51 AM - Re: Conflictiong Shield Termination (Don Boardman)
9. 08:09 AM - Re: Solid State Gyro Components (Canyon)
10. 10:20 AM - Re: (John Schroeder)
11. 11:12 AM - Re: Conflictiong Shield Termination (Don Boardman)
12. 11:45 AM - Re: Solid State Gyro Components (John Mireley)
13. 12:08 PM - Re: wind driven power source? (Robert L. Nuckolls, III)
14. 01:18 PM - Re: Milestone in history of the 'Connection (William Mills)
15. 01:44 PM - Re: Solid State Gyro Components (Terry Watson)
16. 02:21 PM - Re: Solid State Gyro Components (glikar)
17. 02:47 PM - Re: Solid State Gyro Components (Canyon)
18. 03:09 PM - 12 volts to 28 volts (Stephen J. Soule)
19. 03:36 PM - panel (Shannon Knoepflein)
20. 04:00 PM - Re: Milestone in history of the 'Connection (Billie Lamb)
21. 04:51 PM - Re: panel (Shannon Knoepflein)
22. 05:45 PM - Re: AeroElectric-List Digest: 58 Msgs - 02/19/03 (Ronald Cox)
23. 08:02 PM - Power Distribution (N823ms@aol.com)
24. 08:32 PM - Names (Jim Pack)
25. 08:43 PM - Questions (Robert L. Nuckolls, III)
26. 08:46 PM - Re: shield pigtail (Robert L. Nuckolls, III)
Message 1
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--> AeroElectric-List message posted by: John Schroeder <jschroeder@perigee.net>
Bob -
I found a .dwg file in your format entitled: Pitch Trim, p 4.2 and revised 8-20-
00. The view is # 37 and the upper left corner has the number: FH980201. It has
a diode on each reversing relay as mentioned by Bryk. It also has two options
shown for the trim indicator.
I'm thinking that this is the one referenced by Bryk. Right?
John
>>> Bob I am in the proces of creating a pitch trim rely deck. Can't use MAC
>>> to much load. I was reading you download about this Pitch trim page
>>> 4.2. The elevator trim on the Velocity has a 3amp draw and 5a breaker so
>>> i have a good idea of the size of the relays. Any suggestion on whose to
use?
>>
>> The S704-1 relay shown on our website catalog is suited
>> to this task and can be wired per diagram you cited.
>
>Bob -
>
>I have a pitch trim sheet from the Lancair IV wirebook that you did some time
>ago. It is page 4.2. Is this the same one referenced in the posting quoted
>above? If not where could I find a copy of the page in .dwg format?
>
>Thanks,
>
>John Schroeder
>
>
Message 2
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| Subject: | Re: Milestone in history of the 'Connection |
--> AeroElectric-List message posted by: Mark Phillips <ripsteel@edge.net>
FWIW, my suggestion would be to let the work evolve as it has. The only thing
out of
proportion is the price- your work, advice, and participation in this forum are
worth many
times what THIS customer has paid for it! I challenge anyone here to cite a more
useful and
valuable resource. Carry on, sir!
Sincerest thanks from The PossumWorks in TN
Mark Phillips - do not archive -
>
> You folks are the customers. The 'Connection and
> the website are as much yours as they are mine.
> Let's push them ahead together.
>
> Bob . . .
Message 3
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| Subject: | Re: Milestone in history of the 'Connection |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
>
> >I've learned new things because you guys asked questions
> > that fertilized a search for answers. All of those
> >
>
>
>Hahahaha!! Bob's calling our questions 'fertilizer.' What will he
>think of next??? :)
Touch . . .
Bob . . .
Message 4
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 08:42 AM 2/20/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: John Schroeder
><jschroeder@perigee.net>
>
>Bob -
>
>I found a .dwg file in your format entitled: Pitch Trim, p 4.2 and revised
>8-20-
>00. The view is # 37 and the upper left corner has the number: FH980201.
>It has
>a diode on each reversing relay as mentioned by Bryk. It also has two options
>shown for the trim indicator.
>
>I'm thinking that this is the one referenced by Bryk. Right?
That's the one. I had also posted it at
http://www.aeroelectric.com/articles/trim2.pdf
Bob . . .
Message 5
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| Subject: | Re: Conflictiong Shield Termination |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 01:29 AM 2/20/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
>
>Hi Bob,
>
>The shields for the mic and phone inputs and then the outputs to the com
>radios for my PMA4000 Audio Panel/Intercom are shown terminated to "Lo" at
>the intercom only. Fine. The outputs are shown going to Com 1 and Com 2 and
>the shield is left unconnected. The unswitched audio connection to the GPS
>is also shown grounded only at the intercom, fine.
>
>The problem ... the wire diagram for the Icom radios show the mic and phone
>shields making a connection at the radio, actually it looks like they are
>using a single shielded conductor and using the shield as the ground/return
>wire. The GPS also shows the audio to the intercom with the shield
>terminated at the GPS end.
>
>Do I need to make some phone calls?
It wouldn't hurt . . . but if you've deduced that some shields
are attached at both ends for the purposes of providing
ground return, then a double ended connection makes
sense. I'm mystified by the shields with NO connection,
I would return these to ground at the black box where
the center conductors provide INPUTS.
Can you scan/mail or fax me copies of the drawings?
It's always easier to sort these things out when
we're both looking at the same pieces of paper.
Bob . . .
Message 6
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--> AeroElectric-List message posted by: "Gary Casey" <glcasey@adelphia.net>
<<Cars do not us gold plated pins, nor do they use many sealed connectors in
the engine comaprtment, and I have never heard of a problem with corroded
connections. With this being said can it be safe to say that high doller
connectors are not required in aircraft but your typical cheap Radio Shack
$5.00 connector will not cause problems?>>
There definitely is a problem with corrosion in automotive applications. In
the beginning there were only unsealed brass connections. Then the
low-current, high impedance systems went to sealed, tin-plated connectors
under the hood. Then the high-current connections were sealed. Now sealed
connections are finding there way inside the passenger compartment.
Gold-plated terminals are increasing specified for under-hood terminations
carrying less than maybe 100ma. The "USCAR" connectors use a shroud over
the seal to protect against water spray. They also have a double latch
system where a secondary latch can't be snapped in place unless the primary
latch is in place. To separate the secondary latch has to first be pulled
out before the primary latch can be undone. All that costs more and more
money, but automakers are will to pay for the increase in reliability. If
we showed up in Detroit with a Molex-style connector on one of our sensors
we would be laughed out of town. Even the Mil-spec connectors usually can't
pass automotive requirements, mainly because the seal around the wire is too
fragile and subject to mis-handling. To be fair, the big difference between
automotive and aircraft applications is that aircraft aren't subjected to
salt spray (float planes used in salt water?). Regardless, I would
certainly consider sealed automotive-type connectors for everything outside
the cockpit and especially under the cowl and I would use gold terminations
in all D-sub connectors inside the cockpit.
Gary Casey
certainly no expert, but some experience
Message 7
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| Subject: | Solid State Gyro Components |
--> AeroElectric-List message posted by: "Kevin Faris" <kf64358@alltel.net>
I'm interested in locating some pointers to solid state gyro
components. I know almost nothing about them but can imagine they may
be a spinoff of some of the neat gismos that came out National
Semiconductor in the late '70s or early '80s. They had created some
interesting little solid state motors back then and which at the time I
really didn't pay much attention to other than to think they were
really innovative. Am I way off base on the fundamentals of these
components? Anybody got a link or pointer?
Thanks,
Steve
Steve,
Look at the following links in your quest for solid state gyros. The don't tumble
during aerobatics and such but instead have both short and long-term drift
problems. Various designers have tried all sorts of creative ways to cure the
"drift" problems. Some involve using GPS to determine "straight and level"
and others use combinations of compass and electronic "plumb-bobs".
The GPS stabilization seems good until you realize that if you are IFR and lose
GPS you lose your reference and the drift will kill you.
Flying magazine a couple of months ago ran an article on MFD's that explains the
compass and plumb-bob approach.
www.electronic-engineering.ch/study/ins/ins.html
http://www.watson-gyro.com/PDF/AHRS_E304_Brochure.pdf
I have no idea how the "big boys" do AHRS systems in a Boeing, but they always
have a mechanical gyro backup.
Just a few things to consider.
Kevin Faris
RV7 wings, fuselage kit just arrived.
Message 8
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| Subject: | Re: Conflictiong Shield Termination |
--> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
Bob, I will fax copies to 316-685-8617.
I am heading over to the workshop, will send them after lunch.
I have used three conductor shielded wire for both mic and audio runs as it
made economical sense to go this way.
I must have miscommunicated. None of the shields are left hanging at both
ends. It is just that PS Engineering shows termination at there unit only
and the GPS and Coms show termination at there end.
Don
> Hi Bob,
>>
>> The shields for the mic and phone inputs and then the outputs to the com
>> radios for my PMA4000 Audio Panel/Intercom are shown terminated to "Lo" at
>> the intercom only. Fine. The outputs are shown going to Com 1 and Com 2 and
>> the shield is left unconnected. The unswitched audio connection to the GPS
>> is also shown grounded only at the intercom, fine.
>>
>> The problem ... the wire diagram for the Icom radios show the mic and phone
>> shields making a connection at the radio, actually it looks like they are
>> using a single shielded conductor and using the shield as the ground/return
>> wire. The GPS also shows the audio to the intercom with the shield
>> terminated at the GPS end.
>>
>> Do I need to make some phone calls?
>
> It wouldn't hurt . . . but if you've deduced that some shields
> are attached at both ends for the purposes of providing
> ground return, then a double ended connection makes
> sense. I'm mystified by the shields with NO connection,
> I would return these to ground at the black box where
> the center conductors provide INPUTS.
>
> Can you scan/mail or fax me copies of the drawings?
> It's always easier to sort these things out when
> we're both looking at the same pieces of paper.
>
> Bob . . .
Message 9
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| Subject: | Re: Solid State Gyro Components |
--> AeroElectric-List message posted by: Canyon <steve.canyon@verizon.net>
Kevin Faris wrote:
>Look at the following links in your quest for solid state gyros. The
>don't tumble during aerobatics and such but instead have both short
>and long-term drift problems. Various designers have tried all sorts
>of creative ways to cure the "drift" problems. Some involve using GPS
>to determine "straight and level" and others use combinations of
>compass and electronic "plumb-bobs".
Thanks, Kevin. Yes, I just noticed on the Analog Devices spec sheet
last night that the things drift a lot.
>The GPS stabilization seems good until you realize that if you are IFR
>and lose GPS you lose your reference and the drift will kill you.
No kidding. Will probably require a pretty innovative approach to cope
with this. I got really interested in this after looking at some of
the new electronic widgets available now. I may never build what I
have in mind, but I'm going to study the problem until I understand its
pros and cons.
>Flying magazine a couple of months ago ran an article on MFD's that
>explains the compass and plumb-bob approach.
Thanks for the pointers -- I'll check those out. Without understanding
more about the techniques currently being used I sure don't plan any
IFR on these things. :-)
Message 10
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--> AeroElectric-List message posted by: John Schroeder <jschroeder@perigee.net>
Gary -
Could you provide a website or other info on these connectors. They sound
interesting.
Many thanks.
John Schroeder
Super ES
>The "USCAR" connectors use a shroud over the seal to protect against water
>>>>>spray. They also have a double latch system where a secondary latch can't
>be snapped in place unless the primary latch is in place. To separate the
>>>>>secondary latch has to first be pulled out before the primary latch can be
>undone.
Message 11
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| Subject: | Re: Conflictiong Shield Termination |
--> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
Hi Bob,
Faxed you the wire diagrams and an antenna "farm" consideration this
afternoon. I hope it all came through I was using my sisters fax and am a
rookie at it.
In the process of faxing I had the pleasure of talking with a very pleasant
and upbeat lady ... thank her for me for being so patient.
Note on the Icom page under Power cable wiring, the statement "Use 2 pairs
of #18 wires for power and power grounding wiring. 2 pairs? I am not sure
what they mean. Use 2 separate conductors for power ... one to pin 14 and
the other to pin R and then tie them together at the fuse? The ground pins
6-15-F- S ... a pair of conductors to ground these pins?????
I have also added the pin numbers on the Icom sheet that I feel will hook up
with the pins on the intercom. I hope my notations are clear.
Thanks much,
don
Message 12
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| Subject: | Re: Solid State Gyro Components |
--> AeroElectric-List message posted by: John Mireley <mireley@pilot.msu.edu>
Canyon wrote:
>Thanks, Kevin. Yes, I just noticed on the Analog Devices spec sheet
>last night that the things drift a lot.
>
>
>
>>The GPS stabilization seems good until you realize that if you are IFR
>>and lose GPS you lose your reference and the drift will kill you.
>>
>>
>
>No kidding. Will probably require a pretty innovative approach to cope
>with this. I got really interested in this after looking at some of
>the new electronic widgets available now. I may never build what I
>have in mind, but I'm going to study the problem until I understand its
>pros and cons.
>
>
>
These folks have actually got one of the solidstate
gyro/aclerometer/magnetotmer attitude heading
reference systems to hover a helecopter for an extended period. It's a
good source for information
on integrating these systems to produce attitude and heading data. It's
no trivial.
http://autopilot.sourceforge.net/
The cheapest integrated system I've seen to date is at. The may not be
in production yet.
http://cgi.nweaa.org/nweaa/exhibitors/site.eaa?ExhibitorURL=http://www.dynondevelopment.com
Message 13
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| Subject: | Re: wind driven power source? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 05:15 PM 2/20/2003 +0000, you wrote:
>Below is the result of your inquiry. It was submitted by
>Karl Schneider (gpsmurf@ev1.net) on Thursday, February 20, 2003 at 09:15:54
>
>Thursday, February 20, 2003
>
>Karl Schneider
>
>,
>Email: gpsmurf@ev1.net
>Comments/Questions: Bob,
>Has anyone ever tried using a wind driven alternator rather than a wind
>driven generator? I have a 40 year old Baby Ace with an A-65 engine and
>want an electrical power source to keep my battery charged. The
>alternators I have found are lighter, cheaper and more powerful than the
>old wind generators I have found and those with a built in regulator seem
>easy to hook up. Also, I think I could turn it at lower RPM and have
>slightly less drag.
How much current do you want to get? Keep in mind
that the output is probably more limited by the
size of the blades (which relate directly to how
much horsepower you're going to sap from the
slipstream). I know of no automotive alternators
that you'd really want to bolt to the belly along
with a propeller that would take advantage of the
alternator's true capabilities.
Let's put some bounds on the electrical size and
then see what that translates to in terms of
mechanical size.
Bob . . .
Message 14
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| Subject: | Milestone in history of the 'Connection |
--> AeroElectric-List message posted by: William Mills <courierboy@earthlink.net>
Hi Bob -
I vote we keep things as they are now.
You have a unique knack for simplifying and explaining our electrical
systems' architectures and components. When I go to the "Connection"
I know exactly where the "nuts 'n' bolts" chapters are, and where the
theory/historical chapters are. I very much like having them both in
one book but don't necessarily take them in equal doses.
A few months back a list-member asked about the acronym "pidg". Being
curious I went to chapter 9 and there is was on page 9-4 in bold,
capitol type - Yes!
So the list-members too, through give and take, play a large part in
my education.
Bob, the AEC you've created is a big, big deal and it's working very well.
Thank you -
Bill Mills
RANS Courier/912uls in progress
SF bay area Calif
---------snip-----------------
> Your comment about, "book 1 for background
> reading when I've got more spare time" caught
> my attention. It's been my experience as
> student, teacher and practitioner that the
> "spare time" almost never comes later. If
> it's not part of the curriculum, the follow-up
> will rarely happen, if ever.
>
> You folks are the customers. The 'Connection and
> the website are as much yours as they are mine.
> Let's push them ahead together.
>
> Bob . . .
Message 15
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| Subject: | Solid State Gyro Components |
--> AeroElectric-List message posted by: "Terry Watson" <terry@tcwatson.com>
Steve,
You might look at the archives of the Matronics Avionics list. There isn't
much activity, but there have been discussions of solid state gyros in the
past.
Terry
* AeroElectric-List message posted by: Canyon <steve.canyon@verizon.net>
I'm interested in locating some pointers to solid state gyro
components. <snip>
* Thanks,
Steve
Message 16
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| Subject: | Re: Solid State Gyro Components |
--> AeroElectric-List message posted by: glikar <glikar@shaw.ca>
Hi, been playing with gyros recently. You may find these links interesting.
http://autopilot.sourceforge.net/ahrs.html
The gyration gyros are 3 axis and very sensitive, I've got 4 of these.
http://www.gyration.com/technology.htm
http://www.electronic-engineering.ch/study/ins/ins.html
Gord
Message 17
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| Subject: | Re: Solid State Gyro Components |
--> AeroElectric-List message posted by: Canyon <steve.canyon@verizon.net>
glikar wrote:
>Hi, been playing with gyros recently. You may find these links
>interesting.
><http://autopilot.sourceforge.net/ahrs.html>http://autopilot.sourceforge.net/ahrs.html
>
>The gyration gyros are 3 axis and very sensitive, I've got 4 of these.
><http://www.gyration.com/technology.htm>http://www.gyration.com/technology.htm
>
>http://www.electronic-engineering.ch/study/ins/ins.html
Thanks, Gord and ALL for the pointers. I'm now a 24 hr. expert on SS
gyros (not to be confused with a more advanced 90 day wonder). One
conclusion I've reached already is that if the EFIS-D10 and similar
products for $2K or so live up to their specs, they are not over
priced. :-)
The other thing I've learned is simply that while these devices are
pretty neat, I'm not ready to give up my more traditional steam gauges
quite yet.
Do not archive
Message 18
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| Subject: | 12 volts to 28 volts |
--> AeroElectric-List message posted by: "Stephen J. Soule" <SSoule@pfclaw.com>
As the owner of a nice 28 volt Bendix-King KY-196, I would like to install
it in my 12 volt RV-8 under construction. Where could I buy a device to step
up the voltage from 12 to 28 volts, or where can I find plans to build a
device that will work for a com radio? Also, I would appreciate any real
world advice from those who have tried it. By the way, I have an email to
Sure Power, who builds such devices, but they have not responded yet with a
recommendation.
Stephen Soule
Huntington, Vermont
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<META NAME"Generator" CONTENT"MS Exchange Server version 5.5.2652.35">
12 volts to 28 volts
As the owner of a nice 28 volt Bendix-King KY-196, I would like to install it in
my 12 volt RV-8 under construction. Where could I buy a device to step up the
voltage from 12 to 28 volts, or where can I find plans to build a device that
will work for a com radio? Also, I would appreciate any real world advice from
those who have tried it. By the way, I have an email to Sure Power, who builds
such devices, but they have not responded yet with a recommendation.
Stephen Soule
Huntington, Vermont
Message 19
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"'Lancair Mailing List'" <lml@lancaironline.net>
--> AeroElectric-List message posted by: "Shannon Knoepflein" <kycshann@kyol.net>
Got the panel fired up for the first time today. How exciting :)
---
Shannon Knoepflein <---> kycshann@kyol.net\
Lancair Legacy
http://www.lancaironline.net/pix/shannon
Message 20
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| Subject: | Re: Milestone in history of the 'Connection |
--> AeroElectric-List message posted by: "Billie Lamb" <N254BL@cfl.rr.com>
To which I can only add "Amen"
Bill Lamb
Wiring my Mustang II and loving it.
----- Original Message -----
From: "William Mills" <courierboy@earthlink.net>
Subject: RE: AeroElectric-List: Milestone in history of the 'Connection
> --> AeroElectric-List message posted by: William Mills
<courierboy@earthlink.net>
>
> Hi Bob -
>
> I vote we keep things as they are now.
> You have a unique knack for simplifying and explaining our electrical
> systems' architectures and components. When I go to the "Connection"
> I know exactly where the "nuts 'n' bolts" chapters are, and where the
> theory/historical chapters are. I very much like having them both in
> one book but don't necessarily take them in equal doses.
>
> A few months back a list-member asked about the acronym "pidg". Being
> curious I went to chapter 9 and there is was on page 9-4 in bold,
> capitol type - Yes!
> So the list-members too, through give and take, play a large part in
> my education.
> Bob, the AEC you've created is a big, big deal and it's working very well.
>
> Thank you -
> Bill Mills
> RANS Courier/912uls in progress
> SF bay area Calif
>
> ---------snip-----------------
>
> > Your comment about, "book 1 for background
> > reading when I've got more spare time" caught
> > my attention. It's been my experience as
> > student, teacher and practitioner that the
> > "spare time" almost never comes later. If
> > it's not part of the curriculum, the follow-up
> > will rarely happen, if ever.
> >
> > You folks are the customers. The 'Connection and
> > the website are as much yours as they are mine.
> > Let's push them ahead together.
> >
> > Bob . . .
>
>
Message 21
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--> AeroElectric-List message posted by: "Shannon Knoepflein" <kycshann@kyol.net>
Sorry, link:
http://shannon.v8eaters.com/images/lancair/02_2003/panel_6.jpg
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Shannon Knoepflein
Subject: AeroElectric-List: panel
--> AeroElectric-List message posted by: "Shannon Knoepflein"
<kycshann@kyol.net>
Got the panel fired up for the first time today. How exciting :)
---
Shannon Knoepflein <---> kycshann@kyol.net\
Lancair Legacy
http://www.lancaironline.net/pix/shannon
Message 22
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| Subject: | Re: AeroElectric-List Digest: 58 Msgs - 02/19/03 |
--> AeroElectric-List message posted by: "Ronald Cox" <racox@ix.netcom.com>
> Time: 01:57:24 PM PST US
> From: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
> Subject: AeroElectric-List: Milestone in history of the 'Connection
>
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<bob.nuckolls@cox.net>
>
> ...
>
> I cut him a check and put it in the mail with a note
> hoping that his experiences with his airplane were
> "enjoyable and stress free." I've put his letter on the
> bulletin board over my desk. It's a "keeper". . .
>
>
> Bob . . .
Incredible. I expect there are many who feel they don't need to or want to
understand to put information to use, but I can't imagine having the nerve
to return the book, stains and all...
I'm not at all surprised you refunded his money... <g>
You counldn't buy mine back!
Ron
Message 23
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| Subject: | Power Distribution |
--> AeroElectric-List message posted by: N823ms@aol.com
Bob: Would like to run this by you one more time. I have included some of my
thought process on some items. Would appreciate your comments and
recommendations, I have also asked John Schroeder for his comments since Ron
and him are building a Lancair ES as well.
Thanks,
Ed Silvanic
# 1 POWER DISTRIBUTION BUS
Main Alt Fld 5A. Ford Motorcraft 60A 12vdc. Internal regulator. How is
Z-24 incorporated into Z-14 so as to behave like the Z-14, i.e., LO Voltage
sensor. Since this is not a LR3, would an ABMM be good here? Or should I just
ask my manufacturer to swap out the ford alternator for a B&C 60A?
Main Alt OV/LV sensor 2A? OV I know would take one of those crowbar modules.
Strobe light 7A. Opposed to the normal light s on the Lancair Es, I am
installing the three way lighting system. Where the Nav light would normally
go, I am putting some 55watt miniature white halogen lights which will be
used as taxi lights or sometimes know as runway turnoff lights. Left and
right taxi lights will have separate switches.
Landing Light 10A
NAV/POS lights will be wired together. 7A
Left/Right taxi lights 10A? I will have to check the spec sheet here for
these AutoZone lights. Question here is: Since I will have separate
switches,LT/RT, do I run both of the same fuse box circuit, or use separate
fuse for each side?
Electric Directional Gyro
Flap motor 5A
Flap indicator 2A
Pitot 10A
Cabin Fan 5A
Door seal Pump 5A
Cabin lights 5A will have four individual eyeball lights that have there own
on/off switch. Should run them all through one circuit i.e. a master on/off
power switch?
These lights are reading/map lights.
Cabin Dome light
Pitch trim 2A
Roll trim 2A
Yaw Trim 2A
Engine Gauges by Electronics International
Ultimate Bar graph
FP5-L
Oil/Temp
RPM
MAP
Electric DG
Starter 7A
Spare
Spare
#2 POWER DISTRIBUTION
Aux Alt Fld-B&C 20 amp, on the vacuum pad
Aux Alt Lo volt sensor
Garmin Aud/Com 340
Garmin GNS-530
Garmin GNS-430
Garmin GTX-327
Dynon EFIS D10
TruTrak Autopilot
Six pack lighting rings
GI-106A
GI-102
Electric Attitude Indicator
MAIN BATTERY BUS
Amp/Volt gauge: I can use a switch to read Aux battery, or utilize the
amp/volt function on the Dynon EFIS to read one of the systems.
GNS-530/430 memory
Clock
Fuel boost pump High/Low positions
Future Electronic Ignition
Power receptacle for handheld nav/com/gps
Looking at the above Bus, may have to go to a 10 fuse box
AUX BATTERY BUS
Hobbs meter
Future Electronic Ignition
Power receptacle for handheld nav/com/gps.
Cargo light-timer
Well there you have it. Now to complete the load analysis part of it.
Regards----Ed
Message 24
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--> AeroElectric-List message posted by: "Jim Pack" <jpack@igs3.com>
Bob,
In a dual battery / dual alt system, why do you call it a Main & Aux bus?
In the dual/dual configuration the Aux bus isn't really for auxiliary (or
backup) power - its for primary power to the items on that bus. Either bus
is a backup to the other.
Wouldn't "bus one" and "bus two" (not to be confused with "thing one and
thing two" from my kids books) or "Left Bus & Right Bus", or "Big Bus &
Little Bus" or "Bus 60 & Bus 20" or something of the sort be more
descriptive?
- Jim -
Trying to decide on switch lables
Message 25
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
>Bob: A few questions came up after attending your seminar.
> 1. Does the orientation of the different contactors
> make any difference. like upside down or sideways?
A popular myth . . . no.
> 2. Why not have an alternate feed path to the main buss instead of
> the essential buss. Pull the field breaker if necessary and then turn
> things off that are not needed.
Rather than "essential bus", let's call it the "endurance bus". Things
chosen to power from there are the minimum devices needed for an en route
mode until airport-in-sight . . . after you are cleared to land, turn
the main bus back on and run anything that the battery still has
enough energy to support. The SECOND duty of alternate feed path
is to provide a means for getting to airport of intended destination
if the battery contactor is lost.
> You could then select what you need at the time for the conditions you
> are in.
The configuration suggested minimizes the decision making and
need to analyze/fiddle with things in flight.
If Low volts light ON then
E-bus alternate feed - ON,
DC PWR Master - OFF
Continue to airport in sight.
Get clearance to land
DC PWR Master - ON
. . . what happens after this is immaterial to
the outcome of the flight.
This support the notion that it is possible to predict
what's needed for comfortable en route (and perhaps
a reduced performance arrival) in advance. Have
the plan in place for simple manipulation of controls
and concentrate on being a pilot instead of a
systems manager.
> another thought: what happens if you have both the master Battery contactor
> on and also the alt essential buss feed switch at the same time, anything?
E-bus voltage rises about 0.6 volts . . . otherwise, nothing
noteworthy . . .
> What if the alt feed is coming from a different battery?
No problem, it can come from ANY battery . . . the diode prevents
the alternate feed path from being used to power anything other
than e-bus loads.
> 3 If you have two low voltage warning lights, one for each of
> the two alternators and a voltmeter on the essential bus,
> wouldnt that cover all you really need to know about the status
> of your charging systems and condition of the battey.
You betcha . . . I would be quite comfortable with an airplane
equipped as you describe.
Bob . . .
Message 26
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 09:46 PM 2/19/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: "Shannon Knoepflein"
><kycshann@kyol.net>
>
>Well, I didn't think the outcome was too bad, or I guess it would have
>caught my attention before. It didn't really sink in until I saw your
>post and pix on the subject. The shield twisted without much effort,
>and the pin seemed to grip well. However, I didn't insulate them with
>heatshrink like I "at least" should have.
>
>As far as being happy...what you show is a lot nicer now that I think
>about it, but I'm not sure I really perceive any problems though. I
>think I'll probably go back and heat shrink them all, and call it good.
>That should keep any strands from getting their own ideas....
I think that works. It doesn't sound like taking hammer-n-saw
to it now would be a good investment of time.
Bob . . .
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