---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 06/16/07: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:29 AM - Yahoo! Auto Response (will@willcrook.com) 2. 03:39 AM - Low voltage/battery warning for certified aircraft (rv8ch) 3. 04:03 AM - Re: Low voltage/battery warning for certified aircraft (Neal George) 4. 04:13 AM - Re: Low voltage/battery warning for certified aircraft (Rich Dodson) 5. 04:26 AM - Re: Low voltage/battery warning for certified aircraft (BobsV35B@aol.com) 6. 04:31 AM - Battery Master On Warning (BobsV35B@aol.com) 7. 05:03 AM - Re: Amp sensing with hall effect (Richard Reynolds) 8. 06:55 AM - Re: Low voltage/battery warning for certified aircraft (JOHN TIPTON) 9. 09:06 AM - Re: Low voltage/battery warning for certified aircraft (rv8ch) 10. 09:57 AM - Re: Connector for copilot stick grip (John Burnaby) 11. 09:57 AM - Re: Marker beacon antenna for composite aircraftMarker beacon antenna for composite (John Burnaby) 12. 02:20 PM - Re: Amp sensing with hall effect (Jekyll) ________________________________ Message 1 _____________________________________ Time: 12:29:53 AM PST US From: will@willcrook.com Subject: AeroElectric-List: Yahoo! Auto Response Hello, I'll be out of the country (and off-line) the week of June 18th. I'll respond to your email as soon as possible after my return. Have a great week! Thanks, Will Crook, CPA ________________________________ Message 2 _____________________________________ Time: 03:39:23 AM PST US Subject: AeroElectric-List: Low voltage/battery warning for certified aircraft From: "rv8ch" Hi, Some idiot in my flying club keeps forgetting to turn off the battery when he hangars the aircraft. This doesn't make the next person who wants to fly the airplane very happy, as you can imagine. Do you know of a decent solution for this problem for a certified aircraft? Thanks, Mickey (a.k.a the idiot) -------- Mickey Coggins http://www.rv8.ch/ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118702#118702 ________________________________ Message 3 _____________________________________ Time: 04:03:39 AM PST US From: "Neal George" Subject: RE: AeroElectric-List: Low voltage/battery warning for certified aircraft Mickey - Add a step to the Shutdown checklist: Strobes - ON Neal RV-7 N8ZG - Cowling ------- Hi, Some idiot in my flying club keeps forgetting to turn off the battery when he hangars the aircraft. This doesn't make the next person who wants to fly the airplane very happy, as you can imagine. Do you know of a decent solution for this problem for a certified aircraft? Thanks, Mickey (a.k.a the idiot) -------- Mickey Coggins http://www.rv8.ch/ ________________________________ Message 4 _____________________________________ Time: 04:13:56 AM PST US From: Rich Dodson Subject: Re: AeroElectric-List: Low voltage/battery warning for certified aircraft Mickey, My FBO tells us all to leave the beacon "ON" all the time. That way, when the battery side of the master is "ON", the beacon is rotating and lit up. When I walk away from the airplane for the last time, I check the sound from the Turn Coordinator to make sure it is slowing down and then I check the beacon to make sure it is dark. Been there, done that! Rich ----- Original Message ---- From: rv8ch Sent: Saturday, June 16, 2007 6:37:40 AM Subject: AeroElectric-List: Low voltage/battery warning for certified aircraft Hi, Some idiot in my flying club keeps forgetting to turn off the battery when he hangars the aircraft. This doesn't make the next person who wants to fly the airplane very happy, as you can imagine. Do you know of a decent solution for this problem for a certified aircraft? Thanks, Mickey (a.k.a the idiot) -------- Mickey Coggins http://www.rv8.ch/ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118702#118702 ________________________________ Message 5 _____________________________________ Time: 04:26:33 AM PST US From: BobsV35B@aol.com Subject: Re: AeroElectric-List: Low voltage/battery warning for certified aircraft Good Morning Mickey, Put a certified oil pressure actuated switch in parallel with the strobe light switch. Wire it so that the strobes go on any time the master is on and the oil pressure is non existent. That way, the strobes will be on as you leave the aircraft. The disadvantage is that your strobes will come on before you start the engine. There could be some advantage to that happening as it will warn others that the engine is about to be started! Some airlines make a practice of turning on their rotating beacons before engine start. A rotating beacon wired as suggested would also work as a memory jogger, but I like the idea of the strobe better! On one of our glider tow planes, we have a warning whistle that has a time delay built into a small electronic circuit. It is actuated by the oil pressure switch, but the time delay keeps it from sounding during the engine start process. However, I am not convinced that the warning horn and it's electrical timer meet certification standards. Probably does and who really cares as long as it reminds our pilots to shut off the master! Happy Skies, Old Bob AKA Bob Siegfried Ancient Aviator Stearman N3977A Brookeridge Air Park LL22 Downers Grove, IL 60516 630 985-8503 In a message dated 6/16/2007 5:40:59 A.M. Central Daylight Time, mick-matronics@rv8.ch writes: Do you know of a decent solution for this problem for a certified aircraft? Thanks, Mickey (a.k.a the idiot) -------- Mickey Coggins http://www.rv8.ch/ ************************************** See what's free at http://www.aol.com. ________________________________ Message 6 _____________________________________ Time: 04:31:02 AM PST US From: BobsV35B@aol.com Subject: AeroElectric-List: Battery Master On Warning Good Morning Mickey, Put a certified oil pressure actuated switch in parallel with the strobe light switch. Wire it so that the strobes go on any time the master is on and the oil pressure is non existent. That way, the strobes will be on as you leave the aircraft. The disadvantage is that your strobes will come on before you start the engine. There could be some advantage to that happening as it will warn others that the engine is about to be started! Some airlines make a practice of turning on their rotating beacons before engine start. A rotating beacon wired as suggested would also work as a memory jogger, but I like the idea of the strobe better! On one of our glider tow planes, we have a warning whistle that has a time delay built into a small electronic circuit. It is actuated by the oil pressure switch, but the time delay keeps it from sounding during the engine start process. However, I am not convinced that the warning horn and it's electrical timer meet certification standards. Probably does and who really cares as long as it reminds our pilots to shut off the master! Happy Skies, Old Bob AKA Bob Siegfried Ancient Aviator Stearman N3977A Brookeridge Air Park LL22 Downers Grove, IL 60516 630 985-8503 In a message dated 6/16/2007 5:40:59 A.M. Central Daylight Time, mick-matronics@rv8.ch writes: Do you know of a decent solution for this problem for a certified aircraft? Thanks, Mickey (a.k.a the idiot) -------- Mickey Coggins http://www.rv8.ch/ ************************************** See what's free at http://www.aol.com. ________________________________ Message 7 _____________________________________ Time: 05:03:58 AM PST US From: Richard Reynolds Subject: Re: AeroElectric-List: Amp sensing with hall effect I ran the M-Bus, E-Bus and feed from the Battery contactor thru the hall sensor. I want to read amps being used. I don't care about amps to the battery being charged. If the bus voltage is above 13,5, the battery is charging. Be sure to run the wires thru the hall sensor in the same "sense", ie + to -, or else you will subtract one of the amp values. Richard Reynolds On Jun 5, 2007, at 2:33 AM, Jekyll wrote: > > I started witring up my hall sensor tonight but thought I should > get a peer review on my electrical monitoring concept before I go > further. My particulars are: > RV-7A > Z-13/8 with fuse blocks > GRT EIS-4000 > GRT Horizon 1 EFIS (single) > P-Mag, E-Mag > > I wired up a single hall effect sensor with 3 wires going through > it: M-bus feed from a FW mounted ANL; B-bus feed from the hot side > of the battery contactor; SD-8 feed from the SD-8 relay to the B- > bus. My architecture is based on the ability to read total bus > amperage on 1 sensor in both primary and alternate operating modes. > Operating in either mode will show the total amps: in primary mode > the M-bus and B-bus will be totaled (of course the M-bus will > include the E-bus through the diode); in alternate mode, the SD-8 > feed will be added to the sensor on its way to the B-bus, thense to > the E-bus. Battery charging can be determined by subtracting total > bus amps from the alternator output to determine amps available to > charge the battery. As I have both the SD-8 and a P-mag, I'm less > concerned about knowing the exact in/out amperage condition of the > battery than I am with knowing my actual bus amps when operating on > the SD-8. I don't desire to add a second sensor or a switching! > capability. > > The GRT system will show bus voltage with ample low voltage warning > in all operating modes. > > Just asking for comments to see if I missed anything before I > commit the acts of cutting, stripping, crimping, soldering and > drilling. > > Thanks, > > Jekyll > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=116592#116592 > > ________________________________ Message 8 _____________________________________ Time: 06:55:30 AM PST US From: "JOHN TIPTON" Subject: Re: AeroElectric-List: Low voltage/battery warning for certified aircraft All our club (certified) aircraft have the beacon wired into the battery switch: when you walk away give the plane one more backward look and if it's winking at you, you've left your master on. John ----- Original Message ----- From: "rv8ch" Sent: Saturday, June 16, 2007 11:37 AM Subject: AeroElectric-List: Low voltage/battery warning for certified aircraft > > Hi, > > Some idiot in my flying club keeps forgetting to turn off the battery when > he hangars the aircraft. This doesn't make the next person who wants to > fly the airplane very happy, as you can imagine. > > Do you know of a decent solution for this problem for a certified > aircraft? > > Thanks, > Mickey (a.k.a the idiot) > > -------- > Mickey Coggins > http://www.rv8.ch/ > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=118702#118702 > > > ________________________________ Message 9 _____________________________________ Time: 09:06:24 AM PST US Subject: AeroElectric-List: Re: Low voltage/battery warning for certified aircraft From: "rv8ch" All great ideas - many thanks! -------- Mickey Coggins http://www.rv8.ch/ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118729#118729 ________________________________ Message 10 ____________________________________ Time: 09:57:43 AM PST US From: "John Burnaby" Subject: Re: AeroElectric-List: Connector for copilot stick grip Run your wiring out the bottom/side of your stick to a plug that is below your upholstery line. Use a quick disconnect pin (AC Spruce) or a bolt for the stick. Unplug, unbolt/disconnect, stow stick, load piano. J do not archive ________________________________ Message 11 ____________________________________ Time: 09:57:44 AM PST US From: "John Burnaby" Subject: Re: AeroElectric-List: Marker beacon antenna for composite aircraftMarker beacon antenna for composite I have a spare copper tape dipole nav antenna installed in my wing. Will this work for a MB antenna instead? J ________________________________ Message 12 ____________________________________ Time: 02:20:15 PM PST US Subject: AeroElectric-List: Re: Amp sensing with hall effect From: "Jekyll" Thanks Richard. I did the same. Yes, I have all the trons shepparded in the same direction. Jekyll Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118761#118761 ------------------------------------------------------------------------------------- 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.