---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sun 11/23/14: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 09:36 AM - Just A Few Days Left... (Matt Dralle) 1. 04:05 PM - volts dropped from 14.4 to 1 (Alan Mekler MD) 2. 04:21 PM - Re: volts dropped from 14.4 to 1 (Kelly McMullen) 3. 04:39 PM - Re: volts dropped from 14.4 to 1 (Jesse Saint) 4. 04:39 PM - Re: volts dropped from 14.4 to 1 (Alan Mekler MD) 5. 04:49 PM - Re: volts dropped from 14.4 to 1 (Alan Mekler MD) 6. 05:02 PM - Re: volts dropped from 14.4 to 1 (Tim Farrell) 7. 05:05 PM - Re: volts dropped from 14.4 to 1 (Jesse Saint) ________________________________ Message 0 _____________________________________ Time: 09:36:13 AM PST US From: Matt Dralle Subject: RV10-List: Just A Few Days Left... Dear Listers, There are just a few days left for this year's List Fund Raiser. If you've been putting off making a Contribution until the last minute, well, this is it! The last minute, that is... :-) There are some GREAT new gift selections to choose from this year. I personally want at least three of them! There's probably something you can't live without too! And, best of all it supports your Lists! Please remember that there isn't any sort of commercial advertising on the Lists and the *only* means of keeping these Lists running is through your Contributions during this Fund Raiser. Let's make this a "Black Friday" for the Lists! Please make a Contribution today! http://www.matronics.com/contribution Or, drop a personal check in the mail to: Matt Dralle / Matronics 581 Jeannie Way Livermore CA 94550 Thank you! Matt Dralle Matronics Email List Administrator ________________________________ Message 1 _____________________________________ Time: 04:05:37 PM PST US From: Alan Mekler MD Subject: RV10-List: volts dropped from 14.4 to 1 I have AFS 4500 in my RV10. Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. Any ideas on what to check? Alan N668G 300 hrs ________________________________ Message 2 _____________________________________ Time: 04:21:01 PM PST US From: Kelly McMullen Subject: Re: RV10-List: volts dropped from 14.4 to 1 Probably a failure at the battery ground, or master relay solenoid. You are right that alternator failure would not cause you to go below battery volts. Do you have battery backup on your EFIS or did it also quit at that point? On 11/23/2014 5:02 PM, Alan Mekler MD wrote: > I have AFS 4500 in my RV10. > Today I took a short 30 min local flight. Taxing in I got a check > volts audio alert. The volts suddenly dropped from the usual 14.4 to > basically zero. See below in the upper graph in yellow (volts ) at 29 > minutes. If the alternator quit I should read the battery voltage not 0. > Any ideas on what to check? > Alan > N668G 300 hrs > ________________________________ Message 3 _____________________________________ Time: 04:39:16 PM PST US From: Jesse Saint Subject: Re: RV10-List: volts dropped from 14.4 to 1 It could be the breaker/circuit that supplies the voltage sensing has popped. I'm not sure on that unit if it is the power supply line to the EFIS or if it is a separate voltage only line, in which case that wire could be broken or could have been cut or shorted to ground. Jesse Saint I-TEC, Inc. jesse@itecusa.org www.itecusa.org www.mavericklsa.com C: 352-427-0285 O: 352-465-4545 F: 815-377-3694 Sent from my iPhone > On Nov 23, 2014, at 7:02 PM, Alan Mekler MD wrote: > > I have AFS 4500 in my RV10. > Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. > Any ideas on what to check? > Alan > N668G 300 hrs > ________________________________ Message 4 _____________________________________ Time: 04:39:16 PM PST US Subject: Re: RV10-List: volts dropped from 14.4 to 1 From: Alan Mekler MD Kelly, I noticed no changes in the EFIS. They have backup battery. It was a sudden failure as you can see. Alan > On Nov 23, 2014, at 7:17 PM, Kelly McMullen wrote: > > > Probably a failure at the battery ground, or master relay solenoid. > You are right that alternator failure would not cause you to go below battery volts. > Do you have battery backup on your EFIS or did it also quit at that point? > On 11/23/2014 5:02 PM, Alan Mekler MD wrote: >> I have AFS 4500 in my RV10. >> Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. >> Any ideas on what to check? >> Alan >> N668G 300 hrs >> > > > > > ________________________________ Message 5 _____________________________________ Time: 04:49:00 PM PST US Subject: Re: RV10-List: volts dropped from 14.4 to 1 From: Alan Mekler MD Jesse, Ill check with Rob at AFS. Alan > On Nov 23, 2014, at 7:33 PM, Jesse Saint wrote: > > > It could be the breaker/circuit that supplies the voltage sensing has popped. I'm not sure on that unit if it is the power supply line to the EFIS or if it is a separate voltage only line, in which case that wire could be broken or could have been cut or shorted to ground. > > Jesse Saint > I-TEC, Inc. > jesse@itecusa.org > www.itecusa.org > www.mavericklsa.com > C: 352-427-0285 > O: 352-465-4545 > F: 815-377-3694 > > Sent from my iPhone > >> On Nov 23, 2014, at 7:02 PM, Alan Mekler MD wrote: >> >> I have AFS 4500 in my RV10. >> Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. >> Any ideas on what to check? >> Alan >> N668G 300 hrs >> > > > > > ________________________________ Message 6 _____________________________________ Time: 05:02:45 PM PST US From: Tim Farrell Subject: Re: RV10-List: volts dropped from 14.4 to 1 I just peeked at the wiring diagrams. eFIs Expansion cable Pin 13 is labels as Volts2, but I don't see a volts1 anywhere. There are two power inputs into the main connector. It is possible that one of them monitors voltage and one doesn't. Possibly one of the came loose. Call advanced and they'll have the answer quickly. Sent from my iPhone > On Nov 23, 2014, at 4:02 PM, Alan Mekler MD wrote: > > I have AFS 4500 in my RV10. > Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. > Any ideas on what to check? > Alan > N668G 300 hrs > ________________________________ Message 7 _____________________________________ Time: 05:05:05 PM PST US From: Jesse Saint Subject: Re: RV10-List: volts dropped from 14.4 to 1 It could be the breaker/circuit that supplies the voltage sensing has popped. I'm not sure on that unit if it is the power supply line to the EFIS or if it is a separate voltage only line, in which case that wire could be broken or could have been cut or shorted to ground. Jesse Saint I-TEC, Inc. jesse@itecusa.org www.itecusa.org www.mavericklsa.com C: 352-427-0285 O: 352-465-4545 F: 815-377-3694 Sent from my iPhone > On Nov 23, 2014, at 7:02 PM, Alan Mekler MD wrote: > > I have AFS 4500 in my RV10. > Today I took a short 30 min local flight. Taxing in I got a check volts audio alert. The volts suddenly dropped from the usual 14.4 to basically zero. See below in the upper graph in yellow (volts ) at 29 minutes. If the alternator quit I should read the battery voltage not 0. > Any ideas on what to check? > Alan > N668G 300 hrs > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.