Today's Message Index:
----------------------
1. 12:28 AM - LVW problem (N1deltawhiskey@aol.com)
2. 07:38 AM - LED annunciator lamps (rv-9a-online)
3. 07:43 AM - Parts to build the OV protector ()
4. 09:25 AM - Re: Parts to build the OV protector (Robert L. Nuckolls, III)
5. 09:49 AM - Re: LED annunciator lamps (Dave Morris \)
6. 09:55 AM - [PLEASE READ] Matronics Upgrade Today 9/11/05 Sunday! (Matt Dralle)
7. 11:53 PM - Re: LVW problem (Robert L. Nuckolls, III)
8. 11:53 PM - Re: Parts to build the OV protector (Rodney Dunham)
9. 11:54 PM - Re: elec smoke smell (Robert L. Nuckolls, III)
10. 11:54 PM - Re: Re: RV 10 wiring architecture (Robert L. Nuckolls, III)
Message 1
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--> AeroElectric-List message posted by: N1deltawhiskey@aol.com
Bob,
I have your AEC9005-101 LVW. I am not using the battery management feature,
so have just connected the fused positive and ground wires along with the LED
wires to the unit.
I have not seen this unit work as expected. I verified continuity of the
positive and ground wiring connections (overlooked checking the LED connections
to be sure they were right today), but found no apparent issues with the wiring.
I thought I would try something else, connection the positive and ground
directly to a battery. It still did not work, but shortly thereafter I smelled
hot
insulation. I touched the wires leading to the LVM and didn't bother to hang
on - just disconnected the battery real quick.
Any idea of what the problem might be? How can I get this working properly?
Could incorrectly wired LED wires cause this problem? (I will check those next
time at the hanger.) Is it a defective unit?
Regards, Doug Windhorn
Message 2
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Subject: | LED annunciator lamps |
--> AeroElectric-List message posted by: rv-9a-online <rv-9a-online@telus.net>
A few months ago, several list browsers were discussing sources for LED
annuciator lamps.
I did a lot of research, and I wasn't happy with what was commercially
available so I designed a family of lamp panels, available now through
Vx Aviation http://www3.telus.net/aviation/vx.html
Also, the free aircraft electrical system schematic on the site has been
updated. Dynon contacted me with a warning not to use the switched
power output from the D10A as an emergency power source for the
E-MAG/P-MAG ignition. The design has been updated to reflect this change.
Thanks,
Vern Little
RV-9A
Message 3
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Subject: | Parts to build the OV protector |
--> AeroElectric-List message posted by: <bbradburry@allvantage.com>
I was going to try and build the OV crowbar module as suggested by Bob. I
discovered that the MBS4991 is an invalid part number with Digikey and they
only have two of the other parts in stock. With a $5 handling charge, I
need to get the complete order if possible.
Can someone tell me part numbers and sources for these parts? I am not an
electrician, so I don't even know what the part that they don't have is,
since I don't understand the symbol in the drawing.
The resistors I suppose I could get at Radio Shack, maybe the diode and the
potentiometer?
Thanks,
Bill Bradburry
Message 4
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Subject: | Re: Parts to build the OV protector |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 10:43 AM 9/11/2005 -0400, you wrote:
>--> AeroElectric-List message posted by: <bbradburry@allvantage.com>
>
>I was going to try and build the OV crowbar module as suggested by Bob. I
>discovered that the MBS4991 is an invalid part number with Digikey and they
>only have two of the other parts in stock. With a $5 handling charge, I
>need to get the complete order if possible.
>
>Can someone tell me part numbers and sources for these parts? I am not an
>electrician, so I don't even know what the part that they don't have is,
>since I don't understand the symbol in the drawing.
>
>The resistors I suppose I could get at Radio Shack, maybe the diode and the
>potentiometer?
Your looking at a very old version which utilized a part
now obsolete. The latest version will be published later
today or tomorrow. I've updated the schematics and BOM
and thought I'd got them posted but an astute reader
pointed out the error of that impression a couple of
days ago. I'll try to get caught up this evening.
Bob . . .
Message 5
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Subject: | Re: LED annunciator lamps |
--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
That's very cool! But, as I was designing my annunciator system, I found a
need for not only active high and active low, but also a threshold type
trigger where you can set a voltage comparator to trigger at a certain
voltage level. That would allow you to build both LV and HV annunciators
for the bus, as well as monitoring a number of other sensors without a lot
of external circuitry, for example carb ice, fuel tank level, AOA sensor,
and so on.
Regards,
Dave Morris
At 09:29 AM 9/11/2005, you wrote:
>--> AeroElectric-List message posted by: rv-9a-online <rv-9a-online@telus.net>
>
>A few months ago, several list browsers were discussing sources for LED
>annuciator lamps.
>
>I did a lot of research, and I wasn't happy with what was commercially
>available so I designed a family of lamp panels, available now through
>Vx Aviation http://www3.telus.net/aviation/vx.html
>
>Also, the free aircraft electrical system schematic on the site has been
>updated. Dynon contacted me with a warning not to use the switched
>power output from the D10A as an emergency power source for the
>E-MAG/P-MAG ignition. The design has been updated to reflect this change.
>
>Thanks,
>
>Vern Little
>RV-9A
>
>
Message 6
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Subject: | [PLEASE READ] Matronics Upgrade Today 9/11/05 Sunday! |
--> AeroElectric-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Listers,
I will be implementing some major upgrades to the Matronics
infrastructure today, Sunday 09/11/2005. During the upgrade, web
services such as the Archive Search Engine, List Browser, and the
Subscription Page will not be available. Additionally, incoming and
outgoing List Email will not be processed during this time, although
no actual email should be lost only queued for later delivery.
This is a rather substantial upgrade and includes moving all network,
computer, and UPS equipment to a new systems rack. I hope to have
everything back on line by 8PM PDT tonight or sooner if all goes well.
This is an awesome upgrade that I've been wanting to do for a long
time, and should help increase availability of the Matronics systems
to near 99.99%!
Thank you for your patience!
Matt Dralle
Matronics Email List Administrator
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
do not archive
Message 7
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 03:26 AM 9/11/2005 -0400, you wrote:
>--> AeroElectric-List message posted by: N1deltawhiskey@aol.com
>
>Bob,
>
>I have your AEC9005-101 LVW. I am not using the battery management feature,
>so have just connected the fused positive and ground wires along with the LED
>wires to the unit.
>
>I have not seen this unit work as expected. I verified continuity of the
>positive and ground wiring connections (overlooked checking the LED
>connections
>to be sure they were right today), but found no apparent issues with the
>wiring.
>
>I thought I would try something else, connection the positive and ground
>directly to a battery. It still did not work, but shortly thereafter I
>smelled hot
>insulation. I touched the wires leading to the LVM and didn't bother to hang
>on - just disconnected the battery real quick.
>
>Any idea of what the problem might be? How can I get this working properly?
>Could incorrectly wired LED wires cause this problem? (I will check those
>next
>time at the hanger.) Is it a defective unit?
I've never had one returned. They're easy to check. Get a
9-pin d-sub female connector from Radio Shack or other
handy source. Short pins 2 and 3 together. Put leadwires
on pins 4 (+in) and 6 (ground). Plug your LVW/ABMM
module into this connector and then connect the pin 4
wire to (+) on your car battery and pin 6 wire to (-)
or ground. Engine should not be running for this test.
If the module is okay, it the LED on the module will be
flashing. Start the engine and repeat the test. The
LED should not be flashing.
Bob . . .
Message 8
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Subject: | Parts to build the OV protector |
--> AeroElectric-List message posted by: "Rodney Dunham" <rdunhamtn@hotmail.com>
Brad,
Why would you even consider building you own OV crowbar module???
B&C Specialties has one for just $35!
I installed one in my OBAM and glad I did. No creative electrical
engineering for me.
Rodney
>From: <bbradburry@allvantage.com>
>Reply-To: aeroelectric-list@matronics.com
>To: <aeroelectric-list@matronics.com>
>Subject: AeroElectric-List: Parts to build the OV protector
>Date: Sun, 11 Sep 2005 10:43:07 -0400
>
>--> AeroElectric-List message posted by: <bbradburry@allvantage.com>
>
>I was going to try and build the OV crowbar module as suggested by Bob. I
>discovered that the MBS4991 is an invalid part number with Digikey and they
>only have two of the other parts in stock. With a $5 handling charge, I
>need to get the complete order if possible.
>
>Can someone tell me part numbers and sources for these parts? I am not an
>electrician, so I don't even know what the part that they don't have is,
>since I don't understand the symbol in the drawing.
>
>The resistors I suppose I could get at Radio Shack, maybe the diode and the
>potentiometer?
>
>Thanks,
>Bill Bradburry
>
>
Message 9
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Subject: | Re: elec smoke smell |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 06:30 PM 9/10/2005 -0700, you wrote:
>--> AeroElectric-List message posted by: Richard Riley <richard@riley.net>
>
>Others will, I'm sure, have better suggestions. But I'd start off
>with have a halon extinguisher handy.
>
>
>At 05:15 PM 9/10/05, Guy and Jill Foreman wrote:
>
> >--> AeroElectric-List message posted by: "Guy and Jill Foreman"
> ><guyjill01@hotmail.com>
> >
> >I turned on my split batt/alt switch, and heard a rapid clicking noise,
> >followed by a elec smoke smell. I turned of the batt switch, and the smell
> >went away. I decided to replace the batt relay, but never did find out where
> >the smell was coming from. I know something got hot, but cant find where it
> >came from. Any suggestions?
Pull all fuses/breakers. Install a temporary fuse in
series with your battery. I recommend a MAX30 and HHX inline holder
like the one on page 12 of
http://www.bussmann.com/shared/library/catalogs/Buss_Auto-Fuse_Cat.pdf
You can find these at many car parts stores.
Power system up battery only. Push breakers in/install fuses in one
system at a time and test each one for functionality. When a system
has been checked, pull that fuse/breaker back out. If you can't locate
a "dead" system, then hook some kind of visual or audible indicator
to the downstream side of your MAX30 and start pushing and pulling
on things. You're looking for something loose and/or cut wherein
the original fault cleared when you smelled smoke the first time.
You're trying to get it to repeat but without smoke this time.
Bob . . .
Message 10
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Subject: | Re: RV 10 wiring architecture |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
>----- Original Message -----
>From: "Dave & Brenda Emond" <d_emond@mweb.co.za>
>To: <aeroelectric-list@matronics.com>
>Subject: AeroElectric-List: Re: RV 10 wiring architecture
>
>
> > --> AeroElectric-List message posted by: "Dave & Brenda Emond"
><d_emond@mweb.co.za>
> >
> >
> > I am a non electric guy, starting out from scratch. I was hoping to get
> > answers and opinions on the following questions.
> >
> > How are Cessna, Mooney, Pipers ect wired up. Are they dual battery and
> > dual alternator?
> >
> > I want to keep my RV10 practical, and careful not to overdo the redundancy
> > part, keep it simple.
> >
> > I will in all probability end up with an electric panel, no vacuum. I like
> > the Grand Rapids system, Chelton is a bit too far away in $$$ terms. I
> would
> > probably back up with a Dynon, with an internal Nicad. I will be running
> > LASAR magneto's. My first thoughts are single Alternator and single
> battery?
> >
> > All suggestions and points of view are appreciated.
Dave,
Sounds like you're pretty far down on the learning curve. Tell
us a bit about yourself and your building environment. Are
you familiar with the other RV-Lists on Matronics? Are there
some builders in your area who are also working on an RV?
Are you a member of your local EAA chapter? How far along
are you on your project?
I'll suggest you consider purchasing a copy of The AeroElectric
Connection which is described at
http://aeroelectric.com/Catalog/pub/pub.html
and can be ordered from a number of dealers including
Wicks, Steinair, B&C, buildersbooks, and from our
website at:
http://aeroelectric.com/Catalog/AECcatalog.html
Start with chapter 17 which speaks to system reliability
and system tailoring to the builder's mission and capabilities
of the airplane.
If "going stock" with a clone of systems found on certified
ships is of interest, you can get real close with a minimum
of effort/risk by installing the system recommended by Van's.
If you want something different, then Chapter 17 is a good
place to start. Without knowing more than you've told us so
far, it's difficult to advise now but consider a Figure
Z-11 architecture (See:
http://aeroelectric.com/articles/Rev11/AppZ_R11C.pdf
with an eye of upgrading to Figure Z-13/8 later.
Are you hard over on the LASAR system? You can do as
well for a lot less money, installation time, weight
and probably better reliability with owner build and
maintained (OBAM) aircraft alternatives. Lightspeed
has a track record of over 15 years in the industry.
E-Mag (emagair.com) are the up-and-commers who show
a great deal of promise.
What ever you do, put of buying any major electronics,
or even batteries until as late in your project as
possible.
Welcome to the AeroElectric-List. Help us out by
telling us more about how you want to use this airplane.
Bob . . .
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