Today's Message Index:
----------------------
1. 05:07 AM - Re: Re: Alternator problem? (rnjcurtis)
2. 05:34 AM - Re: Re: Alternator problem? (rnjcurtis)
3. 05:40 AM - Re: Re: Alternator problem? (Charlie England)
4. 05:46 AM - Re: Alternator problem? (donjohnston)
5. 05:55 AM - =?utf-8?Q?Re:__Re:_Alternator_problem=3F? ()
6. 06:06 AM - Re: Re: Alternator problem? (Robert L. Nuckolls, III)
7. 07:53 AM - Re: Re: Alternator problem? (Robert L. Nuckolls, III)
8. 08:56 AM - Re: Alternator problem? (donjohnston)
9. 09:48 AM - Re: Audio Noise (John snapp)
10. 09:51 AM - Ground loop proves to be mighty painful! (rparigoris)
11. 10:03 AM - Re: Re: Alternator problem? (Charlie England)
12. 10:28 AM - Re: Ground loop proves to be mighty painful! (Bob Verwey)
Message 1
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| Subject: | Re: Alternator problem? |
I converted a Denso alternator to external using the instructions published on
the EAA site. It is not difficult, but takes a bit of time.
Roger
Sent from: YOGA TABLET 10 HD+
Charlie England <ceengland7@gmail.com> wrote:
>
>On 6/28/2015 9:42 PM, user9253 wrote:
>>
>> 24 volt Voltage regulator, eBay item number:151689173831, is only $10. Has
anyone ever tried to adapt an internal voltage regulator for external use?
>> Joe
>>
>> --------
>> Joe Gores
>I wondered about that, as well. Shouldn't be too big a deal for someone
>handy with a soldering iron.
>
>Charlie
>
>
Message 2
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| Subject: | Re: Alternator problem? |
In rereading the posts, It appears that the conversation was referring to removing
an internal regulator and using it externally. I don't know of anyone doing
this.
Roger
Sent from: YOGA TABLET 10 HD+
rnjcurtis <rnjcurtis@charter.net> wrote:
I converted a Denso alternator to external using the instructions published on
the EAA site. It is not difficult, but takes a bit of time.
Roger
Message 3
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| Subject: | Re: Alternator problem? |
I think Joe is referring to actually using the regulator that's made for
internal regulation as an external regulator. A bit more involved than
adapting an external regulator to a '1-wire' alternator (but not a lot
more).
Charlie
On Mon, Jun 29, 2015 at 7:04 AM, rnjcurtis <rnjcurtis@charter.net> wrote:
>
> I converted a Denso alternator to external using the instructions
> published on the EAA site. It is not difficult, but takes a bit of time.
>
> Roger
>
>
> Sent from: YOGA TABLET 10 HD+
>
> Charlie England <ceengland7@gmail.com> wrote:
>
> ceengland7@gmail.com>
> >
> >On 6/28/2015 9:42 PM, user9253 wrote:
> >>
> >> 24 volt Voltage regulator, eBay item number:151689173831, is only $10.
> Has anyone ever tried to adapt an internal voltage regulator for external
> use?
> >> Joe
> >>
> >> --------
> >> Joe Gores
> >I wondered about that, as well. Shouldn't be too big a deal for someone
> >handy with a soldering iron.
> >
> >Charlie
> >
> >
> >
> >
>
>
Message 4
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| Subject: | Re: Alternator problem? |
I appreciate the suggestions. But I'm not sure if trying to MacGuyver a voltage
regulator is good way to troubleshoot my current issue. [Laughing]
Vertical Power has offered to bench check the VP-X but removing it won't be the
easiest thing and I'm looking at a 10-day turnaround.
So buying a new LR3C-28 at $198 may be a relatively easy and timely (although not
very cost effective) step. If it turns out not to be the VR, I guess I'll
have a spare.
At that point, it would most likely be the VP-X and then I could send that out.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=444161#444161
Message 5
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| Subject: | Re:_AeroElectric-List:_Re:_Alternator_problem=3F? |
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byB0dXJuaW5nIHRoZSBhbHRlcm5hdG9yIG9uIGFuZCBvZmYuDQoNCg0KDQpSb2dlcg=
Message 6
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| Subject: | Re: Alternator problem? |
At 07:31 AM 6/29/2015, you wrote:
>
>In rereading the posts, It appears that the conversation was
>referring to removing an internal regulator and using it
>externally. I don't know of anyone doing this.
There was an article, I think in Sport Aviation
some years ago about making electrical connections
to a dis-mounted replacement for an I-R alternator
regulator for use as a stand-alone external
regulator.
A straight-forward task . . . sometimes. Some
internal regulators utilize and AC voltage sense
path connected to on of the windings. Without
specific knowledge of this feature, the
activity is problematic. The article spoke
to a particular OEM part that was not so
equipped . . . finding one in 28v and knowing
it's pedigree would be difficult.
Bob . . .
Message 7
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| Subject: | Re: Alternator problem? |
At 07:45 AM 6/29/2015, you wrote:
>
>I appreciate the suggestions. But I'm not sure if trying to
>MacGuyver a voltage regulator is good way to troubleshoot my current
>issue. [Laughing]
>
>Vertical Power has offered to bench check the VP-X but removing it
>won't be the easiest thing and I'm looking at a 10-day turnaround.
>
>So buying a new LR3C-28 at $198 may be a relatively easy and timely
>(although not very cost effective) step. If it turns out not to be
>the VR, I guess I'll have a spare.
>
>At that point, it would most likely be the VP-X and then I could
>send that out.
It's all most a given that both the LR3 and the
VPX will bench check okay . . . as would the
alternator. Everything is probably performing
as their designers intended.
Let's do the filter thingy first. Need a mailing
address.
Bob . . .
Message 8
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| Subject: | Re: Alternator problem? |
Bob,
I couldn't figure out how to do a private message here. So I sent you an email
yesterday with my mailing address.
-Don
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=444170#444170
Message 9
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I had the exact problem. The sound was caused by an unshelled RS-232 output of
my GPS that was putting out NMEA sentences every one second. It was being picked
up by a nearby unconnected music input to my audio panel. Grounded the audio
input and all was fine.
John Snapp
+1.303.810.0600
(sent from iPhone)
> On Jun 28, 2015, at 11:24 AM, user9253 <fransew@gmail.com> wrote:
>
>
> Below is a quote from a RV-12 builder in Australia, as posted on VansAirforce:
>
>> I've had a constant `bzzt....bzzt...bzzt' sound in my headset repeated at exactly
one second intervals. Both pilot and co-pilot sides were affected. The sound
level stayed constant despite adjusting the intercom squelch and volume knobs,
and was unaffected by the transponder, radio, autopilot or lights. At first
I thought the sounds were related to the flashing warning signs on the Dynon,
but later realised they were exactly timed to the digital clock on the display.
The noise would start as soon as the boot sequence got to `starting network
manager'. If I unplugged the GPS antenna from the AV5000 module so that the
system couldn't pick up the time signal from the satellites, the clock would
not appear and neither would the noise. Dynon initially thought it might be related
to the transponder, but neither disconnecting the transponder, the EMS,
or anything else seemed to make any difference. If the clock was active, so was
the noise. The only way to get rid of it was to di!
> sconnect the GPS antenna, which wasn't really a good solution. However, flying
with the noise wasn't an option either as it was as irritating as a dripping
tap.
>> However, I got lucky this afternoon when a local electronics guru happened to
be at the field. He spent a couple of hours trouble-shooting the system, checking
the Skyview settings, the radio, tracing the wiring diagram, pulling pins,
etc, until he eventually discovered that the noise was apparently being generated
by interference between the music jack wires and the tunnel harness, which
runs to the ADAHRS mounted in the tail cone. When the GPS antenna was connected,
it appears that EMF generated in the network cable was being fed into the
audio wires that run close to the cable in the tunnel, and was therefore audible
in the headsets. Disconnecting the two audio wires fixed the problem. It
was a simple solution, but tracking down the cause has been a very frustrating
exercise. Glad it's been fixed now.
>
> The length of the shared wire harness is five feet. We will never know the true
cause. But is it more likely that the audio interference was due to the proximity
of wires, or due to the fact that the stereo music input jack was grounded
locally to the airframe (without isolating washers) instead of having a
dedicated ground wire running back to the instrument panel ground?
> Joe
>
> --------
> Joe Gores
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=444125#444125
>
>
>
>
>
>
>
>
>
>
Message 10
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| Subject: | Ground loop proves to be mighty painful! |
Hi group
I never thought much about it before today, but I found out ground loop can be
mighty painful!
I have done a fair share amount of TIG welding over the years. I have done a fair
amount of milling 304 Stainless steel as well. No matter how careful with Stainless
milling, once in a while you end up getting a microscopic splinter. I
have pretty good close up vision and sometimes have a hard time even with magnifier.
I never did a little milled, do a little TIGing, mill, TIG etc. many times before.
Well, today a few times I had a microscopic splinter in my left wire feed hand
that managed to touch the welding rod with my elbow resting on the aluminium welding
table: "WOW"! I guess the splinter however small was more connected to
my biological saline solution.
That minute amount of electron flow really got my attention. To add insult to injury,
I couldn't find the darn splinter one time by sight. It took three iterations
of using ground loop to find it!
As far as ground loops go: I'll take a little static listening to the radio anytime
over TIG splinters ;-)
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=444177#444177
Message 11
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| Subject: | Re: Alternator problem? |
Cheap troubleshooting by substitution (only), as implied by the previous
suggestion of using a COTS Ford regulator to substitute for the existing
unit (not possible due to existing unit being 28v instead of 14v).
Turning alternators on/off is a completely different issue, and begs the
question: Why?
On Mon, Jun 29, 2015 at 7:47 AM, <rnjcurtis@charter.net> wrote:
>
>
> I think Joe is referring to actually using the regulator that's made for
> internal regulation as an external regulator. A bit more involved than
> adapting an external regulator to a '1-wire' alternator (but not a lot
> more).
>
> In doing this, wouldn=99t one be just moving the problems that have
been
> discussed in great detail, of why we should not use internally regulated
> alternators. The internal regulators do not react kindly to turning the
> alternator on and off.
>
> Roger
>
>
Message 12
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| Subject: | Re: Ground loop proves to be mighty painful! |
Ron thats funny!
On Monday, June 29, 2015, rparigoris <rparigor@suffolk.lib.ny.us> wrote:
> rparigor@suffolk.lib.ny.us <javascript:;>>
>
> Hi group
>
> I never thought much about it before today, but I found out ground loop
> can be mighty painful!
>
> I have done a fair share amount of TIG welding over the years. I have done
> a fair amount of milling 304 Stainless steel as well. No matter how careful
> with Stainless milling, once in a while you end up getting a microscopic
> splinter. I have pretty good close up vision and sometimes have a hard time
> even with magnifier.
>
> I never did a little milled, do a little TIGing, mill, TIG etc. many times
> before.
>
> Well, today a few times I had a microscopic splinter in my left wire feed
> hand that managed to touch the welding rod with my elbow resting on the
> aluminium welding table: "WOW"! I guess the splinter however small was more
> connected to my biological saline solution.
>
> That minute amount of electron flow really got my attention. To add insult
> to injury, I couldn't find the darn splinter one time by sight. It took
> three iterations of using ground loop to find it!
>
> As far as ground loops go: I'll take a little static listening to the
> radio anytime over TIG splinters ;-)
>
> Ron Parigoris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=444177#444177
>
>
--
Best...
Bob Verwey
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