---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 09/11/05: 10 ---------------------------------------------------------- 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 _____________________________________ Time: 12:28:36 AM PST US From: N1deltawhiskey@aol.com Subject: AeroElectric-List: LVW problem --> 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 _____________________________________ Time: 07:38:26 AM PST US From: rv-9a-online Subject: AeroElectric-List: LED annunciator lamps --> AeroElectric-List message posted by: rv-9a-online 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 _____________________________________ Time: 07:43:54 AM PST US From: Subject: AeroElectric-List: Parts to build the OV protector --> AeroElectric-List message posted by: 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 _____________________________________ Time: 09:25:55 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Parts to build the OV protector --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 10:43 AM 9/11/2005 -0400, you wrote: >--> AeroElectric-List message posted by: > >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 _____________________________________ Time: 09:49:56 AM PST US From: "Dave Morris \"BigD\"" Subject: Re: AeroElectric-List: LED annunciator lamps --> AeroElectric-List message posted by: "Dave Morris \"BigD\"" 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 > >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 _____________________________________ Time: 09:55:53 AM PST US From: Matt Dralle Subject: AeroElectric-List: [PLEASE READ] Matronics Upgrade Today 9/11/05 Sunday! --> AeroElectric-List message posted by: Matt Dralle 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 _____________________________________ Time: 11:53:35 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: LVW problem --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" 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 _____________________________________ Time: 11:53:35 PM PST US From: "Rodney Dunham" Subject: RE: AeroElectric-List: Parts to build the OV protector --> AeroElectric-List message posted by: "Rodney Dunham" 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: >Reply-To: aeroelectric-list@matronics.com >To: >Subject: AeroElectric-List: Parts to build the OV protector >Date: Sun, 11 Sep 2005 10:43:07 -0400 > >--> AeroElectric-List message posted by: > >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 _____________________________________ Time: 11:54:24 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: elec smoke smell --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 06:30 PM 9/10/2005 -0700, you wrote: >--> AeroElectric-List message posted by: Richard Riley > >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" > > > > > >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 ____________________________________ Time: 11:54:43 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: RV 10 wiring architecture --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" >----- Original Message ----- >From: "Dave & Brenda Emond" >To: >Subject: AeroElectric-List: Re: RV 10 wiring architecture > > > > --> AeroElectric-List message posted by: "Dave & Brenda Emond" > > > > > > > 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 . . .