Today's Message Index:
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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
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| Subject: | 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
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| Subject: | 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>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
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| Subject: | Re: 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
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| Subject: | Re: Alternator Voltage Creeping Up |
Both Links work for me.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=512612#512612
Message 5
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| Subject: | 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
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| Subject: | 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
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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
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Seems like a good candidate for 3D printing Jeff.
> On 29 Nov 2023, at 5:02=AFpm, Jeff Luckey <jluckey@pacbell.net>
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
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