---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 12/29/07: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:47 AM - Panel Labeling (Richard Talbot) 2. 05:53 AM - Re: Need a dc-to-dc converter (dj45) 3. 06:01 AM - Re: Panel Labeling (dj45) 4. 06:40 AM - Re: Icom A200-Help! (two radios, internal () 5. 07:39 AM - Another wet compas problem (ed clegg) 6. 08:03 AM - Re: Backup alternator questions (Robert L. Nuckolls, III) 7. 11:19 AM - Compass (Dawson-Townsend,Timothy) 8. 11:35 AM - Re: Powering the Ignition and Fuel Injectors on Egg. Subaru (mikef) 9. 11:50 AM - Re: Backup alternator questions (Andrew Butler) 10. 12:05 PM - Re: Need a dc-to-dc converter (Ron Quillin) 11. 01:40 PM - Re: Compass (LarryMcFarland) 12. 01:46 PM - Re: Powering the Ignition and Fuel Injectors on Egg. Subaru (Ed Anderson) 13. 07:04 PM - Re: Compass (Robert Feldtman) 14. 09:59 PM - Re: Compass (Ed) ________________________________ Message 1 _____________________________________ Time: 04:47:19 AM PST US From: "Richard Talbot" Subject: AeroElectric-List: Panel Labeling G'day All, I have most of my panel wired up. I have a fairly complicated layout and would like to follow the labelling suggestions included with the Aeroelectric Connection. I am intending to paint the panel a matt grey to minimise reflections in the canopy. How have people transferred the lettering to their panels? I'm specifically wanting to print or transfer the lettering, diagrams to the panel after it has been painted. Thanks Richard ________________________________ Message 2 _____________________________________ Time: 05:53:09 AM PST US Subject: AeroElectric-List: Re: Need a dc-to-dc converter From: "dj45" Has Deltahawk given you a delivery date yet? We had to give up on them after two setback dates. -------- Do not archive Dan Stanton N9801S 99.9% Done Read this topic online here: http://forums.matronics.com/viewtopic.php?p=154843#154843 ________________________________ Message 3 _____________________________________ Time: 06:01:37 AM PST US Subject: AeroElectric-List: Re: Panel Labeling From: "dj45" Hello Richard, I used the rub on transfers from ACS for most of the panel. Use the large ones if you go that way, they are pretty small anyway. Also used a P-Touch label maker using the clear with white print on some of them. Used the outdoor type of label. They will lay down pretty good and look good on my matte grey panel. If I had it too do over again, I think that I would use the P-Touch for all of them. Good luck -------- Do not archive Dan Stanton N9801S 99.9% Done & Flying Read this topic online here: http://forums.matronics.com/viewtopic.php?p=154845#154845 ________________________________ Message 4 _____________________________________ Time: 06:40:11 AM PST US From: Subject: AeroElectric-List: Re: Icom A200-Help! (two radios, internal Ed as I emailed you off the Experimental Avionics list hear is more info with some links to the drawings I mentioned. I did not realize you had TWO radios? You can down load the manuals (pdf) not photo copied here directly from ICOM: http://www.icomamerica.com/en/products/avionics/panelmount/a200/default.aspx Ed you have two radios? and you want to use the internal intercom? I am thinking you would be better served with with an intercom and/or auto panel. You can make a mess or wires and switches (and a few resistors and capacitors) to make two radios work and still use the ICOM A200's internal intercom but WHY? Really seriously the ICOM A200 intercom is just a HOT mic and not very good. Remember when you switch radios you will switch intercoms. You also reslize that the intercom is not voice activated or VOX. You have to select it. You can't transmit on the radio and have the intercom at the same time, one or the other. However if you want to use it, here are some drawings as an adjunct to the manual which might be clearer. This is more illustrated wiring picture with the external intercom switch (DPDT) shown: http://img486.imageshack.us/img486/8466/icoma2004lh.jpg May a better way to wire the intercom is to use two buttons, one for PTT and one for INTERCOM. Of course you can have two PTTs and two INTERCOM buttons for a total of four. http://img80.imageshack.us/img80/7822/dualbuttonwiringgz2.jpg You can avoid a audio panel but you will need a switch to select the radio you want to transmit on. You will slave the audio from one ICOM to the second. This is kind of a work around.: http://img486.imageshack.us/img486/3088/icomblock5xg.jpg Again if you have two radios you really should get an audio panel/ VOX intercom in my opinion. You can get a used audio panel for a few $100. A new one perfect for you from PS Engineering: http://www.ps-engineering.com/pma4000.shtml You realize the internal intercom is a HOT MIC intercom and the volume has no adjustment. There is no squelch and you basically have to select transmit or intercom but not both. I really would encourage you to get a VOX intercom. If you have two radios an audio panel could be real nice. eBay as them used or you could build a RST http://www.rst-engr.com/rst/catalog/audio_panel.html Good Luck Happy New Year. George --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. ________________________________ Message 5 _____________________________________ Time: 07:39:00 AM PST US From: "ed clegg" Subject: AeroElectric-List: Another wet compas problem Hi All, I placed a wet compass in my panel on the upper left side. With the canopy open-RV8- it reads approx correct. As I close the canopy this compass starts rotating to the right and when completely clsd the compass is Off 50 degrees. It would appear that the canopy frame is magnetized. If this is so how would one go about the fix for this. Thanks, Ed Clegg ________________________________ Message 6 _____________________________________ Time: 08:03:38 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Backup alternator questions At 07:51 PM 12/28/2007 -0800, you wrote: > >I have the B&C 8 amp backup alternator along with a main Plane Power 60 >amp unit. When I have them both on line, it seems like the voltage jumps >around a lot. Suspect the two voltage regulators are "fighting" each other >as voltage is stable with either unit running by itself. Is this a problem ? Won't hurt anything but these two devices were not designed nor intended to operate together. >I'd like to leave the backup unit offline and only bring it online when >the primary unit goes away. However, since both warning lights are taken >to Ground to light up, I can't figure out a circuit which would allow this >mode of operation. Any suggestions ? Wire per 13/8 and leave the waring light off the SD8. Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- ________________________________ Message 7 _____________________________________ Time: 11:19:53 AM PST US Subject: AeroElectric-List: Compass From: "Dawson-Townsend,Timothy" bobf wrote: "Secondly - most of us use our GPS to set our DG anyway - not the compass." Let's not get track (what a GPS gives you) confused with heading (what your compass gives you). We've all seen those cross wind days where track and heading differ by 30 degrees. That's the beauty of the EFIS systems that compare magnetic-driven heading (your magnetometer being essentially a compass) to GPS track, then do the math, and tell you the wind magnitude and direction. TDT Tim Dawson-Townsend tdt@aurora.aero 617-500-4812 (office) 617-905-4800 (mobile) ________________________________ Message 8 _____________________________________ Time: 11:35:54 AM PST US Subject: AeroElectric-List: Re: Powering the Ignition and Fuel Injectors on Egg. Subaru From: "mikef" >>I have flow with the Real World Concepts EC2 Fuel Injection controller for close to 5 years now. You are correct it does not have any features which would automatically shut down the engine or reduce power- such as the over temp protection shut down in some automobile CPUs. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=154889#154889 ________________________________ Message 9 _____________________________________ Time: 11:50:38 AM PST US From: "Andrew Butler" Subject: Re: AeroElectric-List: Backup alternator questions Hi Mike, Attached is my Z13/8 variation that splits the bus for dual power supply to an electronic ignition with a cross over relay in case either power supply fails. Haven't wired it up yet, but this is my general plan. I also struggled with a low voltage warning for each power supply prior to splitting the bus, and I ended up concluding that it doesn't make real sense unless the bus is split. In practise, I will probably monitor the backup bus voltage from my AFS3500 EFIS, that allows you to hook up a primary and secondary power source and then set alarms on each. Andrew. ----- Original Message ----- From: "MR Corder" To: aeroelectric-list@matronics.com Subject: AeroElectric-List: Backup alternator questions Date: Fri, 28 Dec 2007 19:51:35 -0800 I have the B&C 8 amp backup alternator along with a main Plane Power 60 amp unit. When I have them both on line, it seems like the voltage jumps around a lot. Suspect the two voltage regulators are "fighting" each other as voltage is stable with either unit running by itself. Is this a problem ? I'd like to leave the backup unit offline and only bring it online when the primary unit goes away. However, since both warning lights are taken to Ground to light up, I can't figure out a circuit which would allow this mode of operation. Any suggestions ? -- Regards, m ____________________________ mike.corder@sbcglobal.net Cell 831-239-0915 =========== =========== =========== =========== ________________________________ Message 10 ____________________________________ Time: 12:05:18 PM PST US Subject: Re: AeroElectric-List: Need a dc-to-dc converter From: Ron Quillin At 16:35 12/28/2007, you wrote: >I'm building a Zenith CH-801 and am planning on using a DeltaHawk diesel >engine. DeltaHawk uses a 24v starter but the flap and trim motors and the >strobes require a 14v system. Does anyone know where I can get a 24 to 12v >converter that can provide 5A continuous and 10A intermittent? I'm averse >to using a tap on the battery string (2 batteries of 12v each) as I've had >really bad experience doing that without an equalizer, and those things are >really heavy. Suggestions are appreciated! See eBay 130186327983 used item from Wentworth. ________________________________ Message 11 ____________________________________ Time: 01:40:19 PM PST US From: LarryMcFarland Subject: Re: AeroElectric-List: Compass Hi guys, I hope this isn't an argument for discarding the compass in lieu of the GPS. I've already been in white-out conditions and the GPS indicating its batteries were failing. The compass got me back, not a great distance, but good enough for the mere 20 miles from home. Makes no sense to not have a good working compass on board and one in your emergency bag too. Larry McFarland 601HDS at www.macsmachine.com Dawson-Townsend,Timothy wrote: > > bobf wrote: > > Secondly - most of us use our GPS to set our DG anyway - not the > compass. > > Lets not get track (what a GPS gives you) confused with heading (what > your compass gives you). Weve all seen those cross wind days where > track and heading differ by 30 degrees. Thats the beauty of the EFIS > systems that compare magnetic-driven heading (your magnetometer being > essentially a compass) to GPS track, then do the math, and tell you > the wind magnitude and direction. > > TDT > > Tim Dawson-Townsend > > tdt@aurora.aero > > 617-500-4812 (office) > > 617-905-4800 (mobile) > > * > > * ________________________________ Message 12 ____________________________________ Time: 01:46:57 PM PST US Subject: AeroElectric-List: Re: Powering the Ignition and Fuel Injectors on Egg. Subaru From: "Ed Anderson" Mike, sounds like a good plan. With the Rotary and dual spark plugs, its possible to set up an electric circuit such that each coil and each pair of injectors have their own circuit breaker/fuse. With each wired directly to battery with its own circuit, you would have to lose power to both coils or both injector pairs to take you down. I can certainly understand not wanting to run any more wire than necessary with your canard. Leaving the juice to the coils and injectors sounds like a reasonable scheme. I know the injectors will not draw any current unless triggered by the EC2, however, I am not as certain about the injector modules. Certainly without being trigger there would not be as much a power drain but, I think I would want to hook up an ignition coil to power and an ampere meter to confirm no power drain. It does not take much over several weeks of setting in a hanger to pull a battery down. Here is another thought. The Contactors used in many aircraft to enable starters and other high current devices have a good reliability history as far as I can tell. I've been using the same ones for 10 years. You might consider two of them installed in rear to make the circuit to the coils and injectors (actually they handle so much current, contactors are probably over kill for this application). Then you would only need two small current wires (plus a common ground of course) and two switches up front to activate the contactors. You need to keep the system as simple and with as few components as practical. Although I do not like leaving power to a system on when I am away from it - that might turn out to be the simplest method for certain. Decisions, Decisions, Decisions. Happy New year Ed -------- Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=154915#154915 ________________________________ Message 13 ____________________________________ Time: 07:04:43 PM PST US From: "Robert Feldtman" Subject: Re: AeroElectric-List: Compass Very true! and also all that magnetic deviation that changes yearly...That is why I do have the whiskey compass in the plane bobf On 12/29/07, Dawson-Townsend,Timothy wrote: > > > bobf wrote: > > "Secondly - most of us use our GPS to set our DG anyway - not the compass .. > " > > > Let's not get track (what a GPS gives you) confused with heading (what > your compass gives you). We've all seen those cross wind days where trac k > and heading differ by 30 degrees. That's the beauty of the EFIS systems > that compare magnetic-driven heading (your magnetometer being essentially a > compass) to GPS track, then do the math, and tell you the wind magnitude and > direction. > > > TDT > > > Tim Dawson-Townsend > > tdt@aurora.aero > > 617-500-4812 (office) > > 617-905-4800 (mobile) > > = * > > ________________________________ Message 14 ____________________________________ Time: 09:59:48 PM PST US From: Ed Subject: Re: AeroElectric-List: Compass You can, in fact, set your DG accurately with a GPS while taxiing. Sure it will precess, but by that time you've got a pretty good idea if the winds aloft are a factor. Better yet - throw the DG away and get an EFIS with a remote magnetometer. Pax, Ed Holyoke > On 12/29/07, *Dawson-Townsend,Timothy * > wrote: > > > > bobf wrote: > > "Secondly - most of us use our GPS to set our DG anyway - not the > compass." > > > > Let's not get track (what a GPS gives you) confused with heading > (what your compass gives you). We've all seen those cross wind > days where track and heading differ by 30 degrees. That's the > beauty of the EFIS systems that compare magnetic-driven heading > (your magnetometer being essentially a compass) to GPS track, then > do the math, and tell you the wind magnitude and direction. > > > > TDT > > > > > > Tim Dawson-Townsend > > tdt@aurora.aero > > 617-500-4812 (office) > > >* >* > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.