---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 04/07/18: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:16 PM - Re: Charging Issue (David Duperron) 2. 06:47 PM - Re: Charging Issue (Charlie England) 3. 07:38 PM - Re: Charging Issue (user9253) 4. 08:02 PM - Re: Charging Issue (Kelly McMullen) ________________________________ Message 1 _____________________________________ Time: 05:16:08 PM PST US From: David Duperron Subject: Re: AeroElectric-List: Charging Issue I completed my RV-10 in July of 2015. I also have a Plane Power 60A main alternator and a 30A alternator as the back up. And I am having the exact same symtoms. Plane Power tells me I should be getting 14.3 to 14.5 volts on the main and slightly less than that on the backup alternator. Should the main alternator output drop below that of the backup, the backup will take over. Fact is The main puts out 13.4V to 13.6V and the back running by itself puts out about the same. Running both together might get me 13.7V. I bought a new 60A alternator and it did the same. I had both the new and the old tested at a starter/alternator shop and they tested to Plane Power specs at 14.5V. My power distribution system is a modified Bob Knuckles Z-13-8 System. I have noticed there are other RV-10 owners having the same issue. I am David Duperron 616-485-5555. On Mon, Feb 19, 2018 at 9:29 AM, mhealydds wrote: > > I have an RV-10 that is about one year and one half old and have had a > charging issue for at least a year of it. I have a Plane Power 60 amp > alternator (and back-up Plane Power 30 amp alternator) with a Advanced > Quick Panel System. Here is east has been going on.... > 1. My primary alternator never get adequate charge. It hovers around 12.5 > to 12.8 volts, sometimes to 13.2 or so, but never above 14 volts. > 2. The primary alternator makes an whine when on. > 3. The primary alternator shuts off intermittently (I see Amps of down and > whine goes off) and then will come back on on its own later or sometimes > will when I reset field switch. > 4. I can sometimes get full charge (14.2) on ground with only some of > avionics on (one EFIS, nav/strobes only). > 5. My secondary alternator does not do all this. It works indicated. > > Here is what I have tried and checked... > 1. Checked and adjusted belt tension on alternator. > 2. Added alternator filter. > 3. Checked continuity and tightness on all connections. > 4. Changed and checked alternator ANL fuse. > 5. Got completely new alternator and replaced it. > 6. Changed terminal plug on alternator. > 7. Been on phone with plane power numerous times and ruined through > trouble shooting and can't seem to find and issue with alternator itself. > 8. Have not had alternator checked but since I have two alternators doing > same thing and both are basically new, I doubt that is the case, but > possible. > 9. Volt reading on EFIS and multimeter at AFS middle same and same on both > EFISs > > Any thoughts on what else to check or fix. I feel like I am missing > something obvious. The plane with run with with the 12.8 or so volts but > that is not what it should be. Could it be AFS module (they don't thing so > at AFS), battery, do I need larger gauge wire (I have 8 now). I just don't > know know anymore and and stuck on my true amateur status. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=478108#478108 > > ________________________________ Message 2 _____________________________________ Time: 06:47:50 PM PST US Subject: Re: AeroElectric-List: Charging Issue From: Charlie England How and where are y'all measuring the voltage? To begin troubleshooting, I'd get a decent digital voltmeter, and make up a couple of long clip leads. Clip the negative directly to the battery's negative terminal, and start testing with the positive directly on the alternator's B-lead. Crank the engine & check voltage. If normal, shut down, move the positive 'downstream' to the next joint, and repeat. Be sure to check every transition; for instance, the B-lead location should be checked on the stud itself, then on the ring terminal that's crimped to the wire, then, if possible, on the end of the wire itself. Then move on to the next joint. Charlie On 4/7/2018 7:15 PM, David Duperron wrote: > I completed my RV-10 in July of 2015. I also have a Plane Power 60A > main alternator and a 30A alternator as the back up. And I am having > the exact same symtoms. Plane Power tells me I should be getting 14.3 > to 14.5 volts on the main and slightly less than that on the backup > alternator. Should the main alternator output drop below that of the > backup, the backup will take over. Fact is The main puts out 13.4V to > 13.6V and the back running by itself puts out about the same. Running > both together might get me 13.7V. I bought a new 60A alternator and it > did the same. I had both the new and the old tested at a > starter/alternator shop and they tested to Plane Power specs at 14.5V. > My power distribution system is a modified Bob Knuckles Z-13-8 System. > I have noticed there are other RV-10 owners having the same issue. I > am David Duperron 616-485-5555. > > > On Mon, Feb 19, 2018 at 9:29 AM, mhealydds > wrote: > > > > > I have an RV-10 that is about one year and one half old and have > had a charging issue for at least a year of it. I have a Plane > Power 60 amp alternator (and back-up Plane Power 30 amp > alternator) with a Advanced Quick Panel System. Here is east has > been going on.... > 1. My primary alternator never get adequate charge. It hovers > around 12.5 to 12.8 volts, sometimes to 13.2 or so, but never > above 14 volts. > 2. The primary alternator makes an whine when on. > 3. The primary alternator shuts off intermittently (I see Amps of > down and whine goes off) and then will come back on on its own > later or sometimes will when I reset field switch. > 4. I can sometimes get full charge (14.2) on ground with only some > of avionics on (one EFIS, nav/strobes only). > 5. My secondary alternator does not do all this. It works indicated. > > Here is what I have tried and checked... > 1. Checked and adjusted belt tension on alternator. > 2. Added alternator filter. > 3. Checked continuity and tightness on all connections. > 4. Changed and checked alternator ANL fuse. > 5. Got completely new alternator and replaced it. > 6. Changed terminal plug on alternator. > 7. Been on phone with plane power numerous times and ruined > through trouble shooting and can't seem to find and issue with > alternator itself. > 8. Have not had alternator checked but since I have two > alternators doing same thing and both are basically new, I doubt > that is the case, but possible. > 9. Volt reading on EFIS and multimeter at AFS middle same and same > on both EFISs > > Any thoughts on what else to check or fix. I feel like I am > missing something obvious. The plane with run with with the 12.8 > or so volts but that is not what it should be. Could it be AFS > module (they don't thing so at AFS), battery, do I need larger > gauge wire (I have 8 now). I just don't know know anymore and and > stuck on my true amateur status. > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 3 _____________________________________ Time: 07:38:28 PM PST US Subject: AeroElectric-List: Re: Charging Issue From: "user9253" Measure the main alternator field current and tell us what it is. _ Is there an ammeter installed? If so, what does the ammeter say? _ Where is the shunt located electrically speaking? Does it measure battery current or alternator current or aircraft load current? _ The vast majority of electrical problems are due to bad connections. Check every connection in the alternator circuit. _ Have you verified that your voltmeter is accurate? -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=479161#479161 ________________________________ Message 4 _____________________________________ Time: 08:02:04 PM PST US Subject: Re: AeroElectric-List: Charging Issue From: Kelly McMullen Have you determined the output voltage at the alternator, vs what you see at the bus? I have the same 60 amp alternator on my RV-10, and consistently see 14.3-14.5 on my Dynon EMS system. I'm suspecting you have some resistance somewhere in the system that is decreasing your voltage. I don't know if you have a voltage drop across your shunt (more than the infinitesimal amount used to measure amps)? You say you changed the ANL fuse. You need to know if there is any voltage drop across any of the circuit between alternator and bus. Does the lead from the alternator to wherever the first connection is show 0.0 ohms? How about the rest of the way to your bus? On 4/7/2018 5:15 PM, David Duperron wrote: > I completed my RV-10 in July of 2015. I also have a Plane Power 60A main > alternator and a 30A alternator as the back up. And I am having the > exact same symtoms. Plane Power tells me I should be getting 14.3 to > 14.5 volts on the main and slightly less than that on the backup > alternator. Should the main alternator output drop below that of the > backup, the backup will take over. Fact is The main puts out 13.4V to > 13.6V and the back running by itself puts out about the same. Running > both together might get me 13.7V. I bought a new 60A alternator and it > did the same. I had both the new and the old tested at a > starter/alternator shop and they tested to Plane Power specs at 14.5V. > My power distribution system is a modified Bob Knuckles Z-13-8 System. I > have noticed there are other RV-10 owners having the same issue. I am > David Duperron 616-485-5555. > > > On Mon, Feb 19, 2018 at 9:29 AM, mhealydds > wrote: > > > > > I have an RV-10 that is about one year and one half old and have had > a charging issue for at least a year of it. I have a Plane Power 60 > amp alternator (and back-up Plane Power 30 amp alternator) with a > Advanced Quick Panel System. Here is east has been going on.... > 1. My primary alternator never get adequate charge. It hovers around > 12.5 to 12.8 volts, sometimes to 13.2 or so, but never above 14 volts. > 2. The primary alternator makes an whine when on. > 3. The primary alternator shuts off intermittently (I see Amps of > down and whine goes off) and then will come back on on its own later > or sometimes will when I reset field switch. > 4. I can sometimes get full charge (14.2) on ground with only some > of avionics on (one EFIS, nav/strobes only). > 5. My secondary alternator does not do all this. It works indicated. > > Here is what I have tried and checked... > 1. Checked and adjusted belt tension on alternator. > 2. Added alternator filter. > 3. Checked continuity and tightness on all connections. > 4. Changed and checked alternator ANL fuse. > 5. Got completely new alternator and replaced it. > 6. Changed terminal plug on alternator. > 7. Been on phone with plane power numerous times and ruined through > trouble shooting and can't seem to find and issue with alternator > itself. > 8. Have not had alternator checked but since I have two alternators > doing same thing and both are basically new, I doubt that is the > case, but possible. > 9. Volt reading on EFIS and multimeter at AFS middle same and same > on both EFISs > > Any thoughts on what else to check or fix. I feel like I am missing > something obvious. The plane with run with with the 12.8 or so volts > but that is not what it should be. Could it be AFS module (they > don't thing so at AFS), battery, do I need larger gauge wire (I have > 8 now). I just don't know know anymore and and stuck on my true > amateur status. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=478108#478108 > > > > > > > > =================================== > - > Electric-List" rel="noreferrer" > target="_blank">http://www.matronics.com/Navigator?AeroElectric-List > =================================== > FORUMS - > eferrer" target="_blank">http://forums.matronics.com > =================================== > WIKI - > errer" target="_blank">http://wiki.matronics.com > =================================== > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank">http://www.matronics.com/contribution > =================================== > > > > ------------------------------------------------------------------------------------- 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.