Today's Message Index:
----------------------
1. 06:29 AM - Interface between Becker AR4201 and PS Audio Panel (ronald jagels)
2. 07:25 AM - Z-24 question (Glaeser, Dennis A)
3. 07:29 AM - Re: Vans VOR antenna (Mickey Billings)
4. 09:19 AM - Strobe Head Failure (Robert Whitaker)
5. 10:26 AM - Re: Strobe Head Failure (Jerzy Krasinski)
6. 11:03 AM - Re: Strobe Head Failure (Scott Jackson)
7. 11:36 AM - Re: Re: Unstable 20A generator system (CFrank@edony.com)
8. 12:21 PM - Re: Z-24 question (Glaeser, Dennis A)
9. 06:03 PM - Re: Vans VOR antenna (Kevin Horton)
Message 1
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| Subject: | Interface between Becker AR4201 and PS Audio Panel |
--> AeroElectric-List message posted by: "ronald jagels" <rejnovca@hotmail.com>
Started the wiring planning for my RV-8A. Has anyone wired the Becker AR4201
com to the PS Engineering PMA7000CD? Think I have most of it figured out to
configure the AR unit as Com 2 but would appreciate input on the pinout
interface from someone who has already done this.
Message 2
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--> AeroElectric-List message posted by: "Glaeser, Dennis A" <dennis.glaeser@eds.com>
For Bob Nuckolls:
Thanks for your comments on the Greg Richter document. When I read it
(Greg's) the first time, I was just imagining what your comments would be,
and when I read your "Whew...deep breath..." I almost burst out laughing.
On the BlueMountain website, in one of the postings rebutting your comments
also mentions Z-24:
--->>> One of these days, even Bob is going to get around to
modifying Z-24 with a note that says, "wiring your system like this and
turning off the ALT field with the engine running will likely fry your
alternator..." <<<---
Since my current plans are to use an internally regulated alternator, and
use that method for OV protection, this got my attention. I can only guess
that the implication is that opening the alternator contactor immediately
unloads the alternator and that can do damage to the regulator? If this has
been discussed in the past, let me know and I'll search for it.
Thanks,
Dennis Glaeser
Message 3
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| Subject: | Re: Vans VOR antenna |
--> AeroElectric-List message posted by: "Mickey Billings" <mbilli@cox.net>
Got it! So it appears the screws through the antenna into the sheet metal
act as the contact to the ground plane, is that right? Also, it looks like
the coax and the high voltage strobe wires run back through the wing
together, does that cause noise in the headphones.
Thanks for the reply!
Mickey Billings
N445BH RV7
----- Original Message -----
From: "Kevin Horton" <khorton01@rogers.com>
Subject: Re: AeroElectric-List: Vans VOR antenna
> --> AeroElectric-List message posted by: Kevin Horton
<khorton01@rogers.com>
>
> >--> AeroElectric-List message posted by: "Mickey Billings"
<mbilli@cox.net>
> >
> >Bob, I guess I do have another question. If I use the Archer antenna
fiber
> >glassed into the wing tip, where do I connect for a good ground plane?
> >
> >Mickey Billings
> >N445BH
> >
>
> The Archer antenna is designed for aircraft with metal wings. The
> antenna is mounted where the wing tip is attached to the wing, so the
> wing skin acts as the ground plane.
>
> http://home.hiwaay.net/~sbuc/journal/sportcraft.htm
>
> --
> Kevin Horton RV-8 (finishing kit)
> Ottawa, Canada
> http://go.phpwebhosting.com/~khorton/rv8/
>
>
Message 4
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| Subject: | Strobe Head Failure |
--> AeroElectric-List message posted by: Robert Whitaker <rmwhitaker@lanl.gov>
I have a regulated NOVA power supply (REG4-80) driving three Whelen strobe
heads on my RV-9A. The right wing strobe failed after approximately 3 hours
use. The other two are working fine so far.
I plugged another strobe head into the right wing and it worked ok, so its
not a wiring or power supply failure. The power supply puts out 20 Watts
(16.5 Joules) per channel, so I don't think I'm over driving the strobes.
(can you under drive these things?)
I spoke with Whelen tech. support. They were not interested in talking to
me after they discovered that I was not using one of their power supplies.
This is quite understandable.
Therefore, I'm counting on the list to offer up it's wisdom and experience.
So...what causes a strobe head to suffer infant mortality?
Rob
Message 5
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| Subject: | Re: Strobe Head Failure |
--> AeroElectric-List message posted by: Jerzy Krasinski <krasinski@provalue.net>
Robert Whitaker wrote:
>--> AeroElectric-List message posted by: Robert Whitaker <rmwhitaker@lanl.gov>
>
>
>I have a regulated NOVA power supply (REG4-80) driving three Whelen strobe
>heads on my RV-9A. The right wing strobe failed after approximately 3 hours
>use. The other two are working fine so far.
>
>I plugged another strobe head into the right wing and it worked ok, so its
>not a wiring or power supply failure. The power supply puts out 20 Watts
>(16.5 Joules) per channel, so I don't think I'm over driving the strobes.
>(can you under drive these things?)
>
>I spoke with Whelen tech. support. They were not interested in talking to
>me after they discovered that I was not using one of their power supplies.
>This is quite understandable.
>
>Therefore, I'm counting on the list to offer up it's wisdom and experience.
>
>So...what causes a strobe head to suffer infant mortality?
>
>Rob
>
>
>
>
Could be a production fault
.
Another possible reason might be too small inductance in the loop[
Was that the strobe with the shortest cable?
Jerzy
Message 6
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| Subject: | Re: Strobe Head Failure |
--> AeroElectric-List message posted by: "Scott Jackson" <jayeandscott@telus.net>
I have the same setup and my tail strobe failed after only a couple of hours
use as well. The replacement strobe works OK, but I'm not back in the air
yet.
Scott in Vancouver
----- Original Message -----
From: "Robert Whitaker" <rmwhitaker@lanl.gov>
Subject: AeroElectric-List: Strobe Head Failure
> --> AeroElectric-List message posted by: Robert Whitaker
> <rmwhitaker@lanl.gov>
>
>
> I have a regulated NOVA power supply (REG4-80) driving three Whelen strobe
> heads on my RV-9A. The right wing strobe failed after approximately 3
> hours
> use. The other two are working fine so far.
>
> I plugged another strobe head into the right wing and it worked ok, so its
> not a wiring or power supply failure. The power supply puts out 20 Watts
> (16.5 Joules) per channel, so I don't think I'm over driving the strobes.
> (can you under drive these things?)
>
> I spoke with Whelen tech. support. They were not interested in talking to
> me after they discovered that I was not using one of their power supplies.
> This is quite understandable.
>
> Therefore, I'm counting on the list to offer up it's wisdom and
> experience.
>
> So...what causes a strobe head to suffer infant mortality?
>
> Rob
>
>
>
Message 7
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| Subject: | RE: Unstable 20A generator system |
--> AeroElectric-List message posted by: CFrank@edony.com
Thank you, Bob. I appreciate your help.
-----Original Message-----
From: Robert L. Nuckolls, III [mailto:b.nuckolls@cox.net]
Subject: AeroElectric-List: RE: Unstable 20A generator system
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<b.nuckolls@cox.net>
At 09:42 AM 9/23/2004 -0400, you wrote:
>--> AeroElectric-List message posted by: CFrank@edony.com
>
>Bob,
>
>Thank you very much for your response.
>
>Can I substitute a 35 amp regulator for a 20 amp regulator? I do have a
>spare 14V regulator on hand, but it is rated for 35 amps, not matching my
20
>amp generator output. I suppose that this regulator will do the job, and
>will just regulate for maximum generator output, but I have been reluctant
>to try this out of fear of damaging something.
>
>Either way, whether going with an alternator system or replacing the
voltage
>regulator, I will still need field approval. We'll see if Santa Claus has
>some spare change left over after Xmas for the B&C alternator you
recommend.
>
>I have joined the list, and already am finding it worthwhile.
Substitute the 35A regulator for a quick test to see if
the system settles down. The 35A current limit is too large
to run . . . if your 20A generator is good, the too-large
current limit setting in the regulator will not protect
the generator. However, the test would be useful to see
if a different regulator makes the system behave better.
Bob . . .
---
Message 8
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| Subject: | RE: Z-24 question |
--> AeroElectric-List message posted by: "Glaeser, Dennis A" <dennis.glaeser@eds.com>
Cancel my question below. I did some searching and found the discussion on
Load Dump. I'll read all that.
Dennis
-----Original Message-----
From: Glaeser, Dennis A
Subject: Z-24 question
For Bob Nuckolls:
Thanks for your comments on the Greg Richter document. When I read it
(Greg's) the first time, I was just imagining what your comments would be,
and when I read your "Whew...deep breath..." I almost burst out laughing.
On the BlueMountain website, in one of the postings rebutting your comments
also mentions Z-24:
--->>> One of these days, even Bob is going to get around to
modifying Z-24 with a note that says, "wiring your system like this and
turning off the ALT field with the engine running will likely fry your
alternator..." <<<--- Since my current plans are to use an internally
regulated alternator, and use that method for OV protection, this got my
attention. I can only guess that the implication is that opening the
alternator contactor immediately unloads the alternator and that can do
damage to the regulator? If this has been discussed in the past, let me
know and I'll search for it.
Thanks,
Dennis Glaeser
Message 9
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| Subject: | Re: Vans VOR antenna |
--> AeroElectric-List message posted by: Kevin Horton <khorton01@rogers.com>
You are right about the screws electrically tieing the antenna to the wing.
My aircraft isn't flying yet, so I can't give you a good answer about
noise. I will be running the strobe and antenna coax about 8 inches
apart as they go down the length of the wing to hopefully minimize
the noise.
Kevin Horton
>--> AeroElectric-List message posted by: "Mickey Billings" <mbilli@cox.net>
>
>Got it! So it appears the screws through the antenna into the sheet metal
>act as the contact to the ground plane, is that right? Also, it looks like
>the coax and the high voltage strobe wires run back through the wing
>together, does that cause noise in the headphones.
>
>Thanks for the reply!
>
>Mickey Billings
>N445BH RV7
>
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