---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 11/28/23: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:41 AM - Re: Re: Alternator Voltage Creeping Up (Bob Verwey) 2. 08:40 AM - Re: Re: Alternator Voltage Creeping Up (Robert L. Nuckolls, III) 3. 08:49 AM - Re: Proper ground power plug wiring (Robert L. Nuckolls, III) 4. 10:53 AM - Re: Alternator Voltage Creeping Up (user9253) 5. 12:29 PM - Re: Re: Alternator Voltage Creeping Up (Robert L. Nuckolls, III) 6. 09:30 PM - Plane Power alternator $$$$ (Jesse Jenks) 7. 10:02 PM - DB9 Cover (Jeff Luckey) 8. 10:54 PM - Re: DB9 Cover (Stuart Hutchison) ________________________________ Message 1 _____________________________________ Time: 01:41:10 AM PST US From: Bob Verwey Subject: Re: AeroElectric-List: Re: Alternator Voltage Creeping Up No response when clicking on the link? On Tue, 28 Nov 2023 at 01:30, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 09:52 AM 11/22/2023, you wrote: > > Bob, if you had to buy a regulator for an OBAM=C3=82 aircraft > with EFIS and EMS, and conventional lycoming engine, > legacy alternator, what would it be? > > > I published an essay on this thread > which HAS appeared in the AeroElectric-List > archives on Matronics . . . I think > it got published twice . . . first as > a draft and then the final version. > > The matronics hardware was having a > bit of indigestion so the posts did > not show up in my email . . . but then, > I had 'read' it already! > > Just in case any of you were having > the same problems I was having, I've > upgraded the essay to an illustrated > article and posted it to: > > > http://aeroelectric.com/articles/Regulator%20Selection/Alternator%20Regul ator%20Selection.pdf > > Access as you see fit . . . > > > Bob . . . > > //// > (o o) > ===========o00o=(_)=o00o====== == > < Go ahead, make my day . . . > > < show me where I'm wrong. > > ======================= ========= > > In the interest of creative evolution > of the-best-we-know-how-to-do based > on physics and good practice. > -- Best Regards, Bob Verwey 082 331 2727 ________________________________ Message 2 _____________________________________ Time: 08:40:20 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Alternator Voltage Creeping Up At 03:40 AM 11/28/2023, you wrote: >No response when clicking on the link? >http://aeroelectric.com/articles/Regulator%20Selection/Alternator%20Regulator%20Selection.pdf > Just checked it . . . works from here. Try this one: https://tinyurl.com/ywduysaf Bob . . . //// (o o) ===========o00o=(_)=o00o======== < Go ahead, make my day . . . > < show me where I'm wrong. > ================================ In the interest of creative evolution of the-best-we-know-how-to-do based on physics and good practice. ________________________________ Message 3 _____________________________________ Time: 08:49:36 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Proper ground power plug wiring At 10:28 PM 11/27/2023, you wrote: >I have a ground power unit plug wired into my experimental airplane. >It works great but if I leave it plugged in when >it=99s powered down, it runs the battery down if >left in that condition for long periods. What is the nature of the GPU? Is it set up for battery charging/maintenance? Normally this size connector is intended for ground assisted starting while being attended by pilot at controls and GPU operator. It CAN also be use for charging a dead battery . . . but this is not recommended. Legacy ground power carts are capable of 1000+ amps of output and are not generally well maintained for their voltage output setpoint. Quite often, the ground power operator thinks if 200A of output is good, 1000A is better . . . and cranks the knob up. If you're wanting to connect a microprocessor controlled, battery charger/maintainer to the ships battery, I suggest a more pedestrian approach to hardware. Perhaps a small connector on a bracket inside the oil-filler door or some such configuration. Bob . . . //// (o o) ===========o00o=(_)=o00o======= = < Go ahead, make my day . . . > < show me where I'm wrong. > ======================== ======== In the interest of creative evolution of the-best-we-know-how-to-do based on physics and good practice. ________________________________ Message 4 _____________________________________ Time: 10:53:57 AM PST US Subject: AeroElectric-List: Re: Alternator Voltage Creeping Up From: "user9253" Both Links work for me. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=512612#512612 ________________________________ Message 5 _____________________________________ Time: 12:29:34 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Alternator Voltage Creeping Up At 12:53 PM 11/28/2023, you wrote: > >Both Links work for me. Thank you. Just for grins here's a new link to Rev B https://tinyurl.com/ylzb2tqm It took some digging around but I finally found the excerpt from a Cessna single- engine service manual that illustrated how not to wire a 3-terminal regulator. I added that figure to the article. Bob . . . //// (o o) ===========o00o=(_)=o00o======== < Go ahead, make my day . . . > < show me where I'm wrong. > ================================ In the interest of creative evolution of the-best-we-know-how-to-do based on physics and good practice. ________________________________ Message 6 _____________________________________ Time: 09:30:31 PM PST US From: Jesse Jenks Subject: AeroElectric-List: Plane Power alternator $$$$ Holy cow, my alternator failed (I think) today. I thought no big deal, Ill just throw a new one in but wow, the price has tripled! I better make sure that is the problem before I spend $1000 on a new one, so Im looking for some opinions here. Heres what happened: started seeing intermittent power off indications on the dynon like it was switching to internal battery, then it went black! (Which is strange because it does have a backup battery) Then the radios started to die. I could not see the volts and amps because that is displayed on the dynon (now dark) so I headed back to the airport. After a minute or so the dynon came back and I checked the volts and amps. Volts were around 9.5 and amps were pegged high. My ammeter shunt is in the alternator feed line. I turned off the avionics and other loads, then thought to turn off the alternator. After a while the volts started creeping back up and I was able to use the radio for landing. Volts came back up to 11.5. I suspect an internal short in the alternator because the battery recovered some after I turned off the alternator. I do have a 60 amp fuse in the alternator feed line and it does not appear to have blown. Maybe the short was not strong enough to blow the fuse? It is an internally regulated Plane Power alternator about 12 years old with about 600 hours on it. Any thoughts, opinions, or advice? Thanks!!! Jesse Sent from my iPad ________________________________ Message 7 _____________________________________ Time: 10:02:34 PM PST US From: Jeff Luckey Subject: AeroElectric-List: DB9 Cover I'm looking for a snap-on thin plastic shell that would clamp over a mated pair of DB9 connectors ( 1 male plugged into a female).=C2- Not a backshe ll but something that is easy to clip on and would protect the other wires in the loom from the metal edges of the connectors.=C2- It does not have to provide strain relief for the wires going into the connectors. I've seen the plastic back shells that snap over each connector - I want so mething like that, but that clips over the mated pair. Anyone ever seen something like this?=C2- Not even sure how to Google for this... -Jeff ________________________________ Message 8 _____________________________________ Time: 10:54:30 PM PST US From: Stuart Hutchison Subject: Re: AeroElectric-List: DB9 Cover Seems like a good candidate for 3D printing Jeff. > On 29 Nov 2023, at 5:02=AFpm, Jeff Luckey wrote: > > I'm looking for a snap-on thin plastic shell that would clamp over a mated pair of DB9 connectors ( 1 male plugged into a female). Not a backshell but something that is easy to clip on and would protect the other wires in the loom from the metal edges of the connectors. It does not have to provide strain relief for the wires going into the connectors. > > I've seen the plastic back shells that snap over each connector - I want something like that, but that clips over the mated pair. > > Anyone ever seen something like this? Not even sure how to Google for this... > > > -Jeff ------------------------------------------------------------------------------------- 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.