Today's Message Index:
----------------------
1. 03:24 AM - Analogue instruments (John M Tipton)
2. 07:11 AM - Re: Antenna Ground Plane (A R Goldman)
3. 07:11 AM - Re: Analogue instruments (Robert L. Nuckolls, III)
4. 08:30 AM - Re: Antenna Ground Plane ()
5. 09:49 AM - Re: Factory Certified but is this safe? (Michael Wynn)
6. 09:57 AM - Warning light (colours) (John M Tipton)
7. 11:32 AM - Re: Antenna Ground Plane (Robert L. Nuckolls, III)
8. 11:32 AM - Re: Warning light (colours) (Robert L. Nuckolls, III)
9. 11:34 AM - Re: Warning light (colours) ()
10. 12:01 PM - Re: Warning light (colours) (Carlos Trigo)
11. 12:42 PM - Re: Antenna Ground Plane (argoldman@aol.com)
12. 10:51 PM - Re: Warning light (colours) (Bob Verwey)
Message 1
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| Subject: | Analogue instruments |
Hi Guys (Bob)
Analogue instruments (Vans) have a 'ground' circuit, can the instrument lighting
circuit ground be connected to the instrument ground or should lighting have
their own ground return.
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489824#489824
Message 2
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| Subject: | Re: Antenna Ground Plane |
Greetings all,
Can a single layer bid carbon layup (of appropriate size) suffice as a groun
d plane?
Thanks in advance
Rich
Sent from my iPhone
> On Jun 21, 2019, at 10:26 AM, Robert L. Nuckolls, III <nuckolls.bob@aeroel
ectric.com> wrote:
>
> At 12:09 AM 6/21/2019, you wrote:
>> Thanks for your help Bob
>>
>> Shortest run possible is 1 foot and I can put antenna 5 to 6 ft away on o
ther side of fuselage and run antenna for +/- 8 ft max from current ELT moun
t. I can reposition the ELT elsewhere in the fuselage but I imagine one does
not want then too far apart
>>
>> Hope this helps
>>
>> I will be away for 5 days so will not be able to respond
>>
>> Thanks
>>
>> Mike
>
> No problem. The reason I'm asking is
> that I'll need to assemble an exemplar
> antenna to test . . . but don't have
> an airplane of my own.
>
> So, assuming the tests are encouraging,
> I'd be pleased to donate the test
> article to your project. The factory-fab
> coax cables I have for the test would
> leave about a 2' flying lead with a
> BNC connector on it.
>
> If that would be long enough, then
> I think we have a plan for the
> testing residuals.
>
>
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Message 3
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| Subject: | Re: Analogue instruments |
At 05:23 AM 6/25/2019, you wrote:
>
>Hi Guys (Bob)
>
>Analogue instruments (Vans) have a 'ground' circuit, can the
>instrument lighting circuit ground be connected to the instrument
>ground or should lighting have their own ground return.
They can be grounded at any convenient
location.
Bob . . .
Message 4
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| Subject: | Antenna Ground Plane |
Bob
Thank you very much
I really appreciate your efforts and would gladly contribute to cover the
costs
2 feet would be more than enough
Thanks again
Mike
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Robert L.
Nuckolls, III
Sent: June 21, 2019 8:27 AM
Subject: RE: AeroElectric-List: Antenna Ground Plane
At 12:09 AM 6/21/2019, you wrote:
Thanks for your help Bob
Shortest run possible is 1 foot and I can put antenna 5 to 6 ft away on
other side of fuselage and run antenna for +/- 8 ft max from current ELT
mount. I can reposition the ELT elsewhere in the fuselage but I imagine one
does not want then too far apart
Hope this helps
I will be away for 5 days so will not be able to respond
Thanks
Mike
No problem. The reason I'm asking is
that I'll need to assemble an exemplar
antenna to test . . . but don't have
an airplane of my own.
So, assuming the tests are encouraging,
I'd be pleased to donate the test
article to your project. The factory-fab
coax cables I have for the test would
leave about a 2' flying lead with a
BNC connector on it.
If that would be long enough, then
I think we have a plan for the
testing residuals.
Bob . . .
---
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Message 5
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| Subject: | Re: Factory Certified but is this safe? |
Very good.=C2- Thank you for the input.=C2- I will keep everyone posted
on this.
Regards,
Michael Wynn,=C2-RV8Pitts S1-SLivermore, CA
-----Original Message-----
From: Robert L. Nuckolls, III <nuckolls.bob@aeroelectric.com>
Sent: Sun, Jun 23, 2019 7:01 pm
Subject: Re: AeroElectric-List: Factory Certified but is this safe?
At 09:15 AM 6/23/2019, you wrote:
In looking at the originalpublished plans, the starter contactor next to th
e battery and no masteris what is published.=C2- I am working with my A&P
to sort out thelegalities of the situation but my decision is to rewire us
ing the Z11basic form.=C2- I changed out the alternator for the TSO'd ver
sion ofthe B&C 40 amp alternator and LRC-3 regulator.=C2- In my view,safe
ty trumps legality.=C2- I cannot explain how the type certificatewas appr
oved this way but the original design was from the 1940's and I'mnot sure w
hen the type certificate was given.=C2- It certainly wouldn'tpass at pres
ent.
=C2- Yeah . . . that would have been a CAR3
=C2- rules. I'll have to see if I still have
=C2- a copy of the light-plane rules in
=C2- my archives. I would be interesting
=C2- to see what was required back then.
I have a call in to Aviat to seeif there is a service bulletin or something
that allows me to legallymake the changes.=C2- Beyond that, safety first
is the byline.=C2- IfI need the 337, then we will get that done.=C2- I
cannot believe I amthe first Pitts owner to encounter this situation.=C2
- Thanks for thefeedback.
=C2- Is there a type-club that might
=C2- have exemplar 337 submissions
=C2- that were successful upgrades?
=C2- Barring that, consider a
=C2- 337 that cites an 'upgrade
=C2- to the original system with:
=C2- (1) architecture patterned after 1968 C172
=C2- (2) fully compliant with FAR23 paragraphs
=C2-=C2-=C2-=C2-=C2- 23.1351 thru 23.1367
=C2- (3) installed per practices described
=C2-=C2-=C2-=C2-=C2- in AC43-13 and all applicable
=C2-=C2-=C2-=C2-=C2- manufacturer's recommendations.
=C2- Then attach a drawing of the system (should
=C2- be pretty simple). Break it up in page
=C2- per system format like that found in the
=C2- back of the various Cessna service manuals
=C2- available from my website.
=C2- I know a DAR type that could help
=C2- you craft the document.
=C2-=C2-=C2-=C2-=C2-
=C2- Bob . . .
Message 6
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| Subject: | Warning light (colours) |
Hi Guys
What are the accepted colours for warning lights: Starter engaged, Alternator out
and Low Oil pressure: OK Red for those, what about Parking Break set, Fuel
pump 'on', Low fuel etc
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489840#489840
Message 7
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| Subject: | Re: Antenna Ground Plane |
At 09:10 AM 6/25/2019, you wrote:
>Greetings all,
>
>Can a single layer bid carbon layup (of appropriate size) suffice as
>a ground plane?
>
>Thanks in advance
Sorry, no. Sheet resistance is too high and making
an electrical connection is problematic. Ground
systems in TC composite a/c are . . . well . . .
I'll be kind: astounding.
Bob . . .
Message 8
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| Subject: | Re: Warning light (colours) |
At 11:57 AM 6/25/2019, you wrote:
>
>Hi Guys
>
>What are the accepted colours for warning lights: Starter engaged,
>Alternator out and Low Oil pressure: OK Red for those, what about
>Parking Break set, Fuel pump 'on', Low fuel etc
In the heavy iron world, Warnings (imperatives) are red, cautions
are amber, notifications are about any other color . . . green, blue,
magenta, etc.
If you're going to flash a light for attention getting operation,
2 to 3 flashes per second are legacy design goals.
Bob . . .
Message 9
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| Subject: | Warning light (colours) |
My preference for light is consistent with Army aviation practice:
Red = Dangerous situation: Basically things that would require me
to land immediately or as soon as practical. (Low oil pressure,
Critical fuel level, etc.)
Amber = Warning or potential danger: Basically things that potentially
impact the operation of the aircraft, and may require intervention.
(Alternator failed, Started engaged, Parking brake on, Low fuel)
Green = Advisory: An indication of a normal condition. (Fuel pump
switch on, Lights/beacons on, etc.)
On the plane I'm building, I plan to use rocker switches that have LED
lights built in to indicate when the switch is on. I'll use green LEDs
for the switches that are "normally on" (master, alternator, magnetos,
beacon, strobes, etc.). I'll use "amber" LEDs in the switches that are
normally off, and that would not be routinely left on (boost pump,
starter a momentary-on switch, and anything else like that).
I don't think I would use a "red" LED in a switch, although I might
consider it if I had a "normally off" secondary alternator design. That
"red" light would remind me that I'm in an "other-than-normal"
configuration when that switch is on. But as a general rule, I don't
like seeing red lights on the panel...
One advantage of using an EFIS with built-in engine monitoring is that
all this can be handled internally to the EFIS/EMS, and only an external
"master caution lights" are needed on the panel (preferably way up at
the top, where you can't miss them) to remind you to look at the glass
screen to see what's wrong... These lights usually have a "reset"
button somewhere in the glass box to re-arm the master caution system
for the next failure. I kind of like this whole approach. Many of the
EFIS/EMS systems for EAB use also allow you to set the ranges for green,
yellow, and red operations, and trigger the external "red" or "amber"
caution light appropriately.
Jim Parker
-------- Original Message --------
Subject: AeroElectric-List: Warning light (colours)
From: "John M Tipton" <john@tiptonuk.eu>
<john@tiptonuk.eu>
Hi Guys
What are the accepted colours for warning lights: Starter engaged,
Alternator out and Low Oil pressure: OK Red for those, what about
Parking Break set, Fuel pump 'on', Low fuel etc
John
Message 10
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| Subject: | Re: Warning light (colours) |
Jim
Excelent answer & suggestions
Carlos
Enviado do meu iPhone
No dia 25/06/2019, s 19:32, <jim@poogiebearranch.com> <jim@poogiebearranch.com>
escreveu:
>
> My preference for light is consistent with Army aviation practice:
>
> Red = Dangerous situation: Basically things that would require me
> to land immediately or as soon as practical. (Low oil pressure,
> Critical fuel level, etc.)
> Amber = Warning or potential danger: Basically things that potentially
> impact the operation of the aircraft, and may require intervention.
> (Alternator failed, Started engaged, Parking brake on, Low fuel)
> Green = Advisory: An indication of a normal condition. (Fuel pump
> switch on, Lights/beacons on, etc.)
>
> On the plane I'm building, I plan to use rocker switches that have LED
> lights built in to indicate when the switch is on. I'll use green LEDs
> for the switches that are "normally on" (master, alternator, magnetos,
> beacon, strobes, etc.). I'll use "amber" LEDs in the switches that are
> normally off, and that would not be routinely left on (boost pump,
> starter a momentary-on switch, and anything else like that).
>
> I don't think I would use a "red" LED in a switch, although I might
> consider it if I had a "normally off" secondary alternator design. That
> "red" light would remind me that I'm in an "other-than-normal"
> configuration when that switch is on. But as a general rule, I don't
> like seeing red lights on the panel...
>
> One advantage of using an EFIS with built-in engine monitoring is that
> all this can be handled internally to the EFIS/EMS, and only an external
> "master caution lights" are needed on the panel (preferably way up at
> the top, where you can't miss them) to remind you to look at the glass
> screen to see what's wrong... These lights usually have a "reset"
> button somewhere in the glass box to re-arm the master caution system
> for the next failure. I kind of like this whole approach. Many of the
> EFIS/EMS systems for EAB use also allow you to set the ranges for green,
> yellow, and red operations, and trigger the external "red" or "amber"
> caution light appropriately.
>
> Jim Parker
>
>
>
> -------- Original Message --------
> Subject: AeroElectric-List: Warning light (colours)
> From: "John M Tipton" <john@tiptonuk.eu>
> Date: Tue, June 25, 2019 11:57 am
> To: aeroelectric-list@matronics.com
>
> <john@tiptonuk.eu>
>
> Hi Guys
>
> What are the accepted colours for warning lights: Starter engaged,
> Alternator out and Low Oil pressure: OK Red for those, what about
> Parking Break set, Fuel pump 'on', Low fuel etc
>
> John
>
>
>
>
Message 11
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| Subject: | Re: Antenna Ground Plane |
thanks Bob (now back to the drawing board)=C2- Plane(ly)=C2-
Rich
-----Original Message-----
From: Robert L. Nuckolls, III <nuckolls.bob@aeroelectric.com>
Sent: Tue, Jun 25, 2019 1:33 pm
Subject: Re: AeroElectric-List: Antenna Ground Plane
At 09:10 AM 6/25/2019, you wrote:
Greetings all,
Can a single layer bid carbon layup (of appropriate size) suffice as agroun
d plane?
Thanks in advance
=C2- Sorry, no. Sheet resistance is too high and making
=C2- an electrical connection is problematic. Ground
=C2- systems in TC composite a/c are=C2- . . . well . . .
=C2- I'll be kind: astounding.
=C2- Bob . . .
Message 12
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| Subject: | Re: Warning light (colours) |
Jim you don't subscribe to the 'dark cockpit' theory?
On Tue, 25 Jun 2019, 8:38 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 11:57 AM 6/25/2019, you wrote:
>
> >
>
> Hi Guys
>
> What are the accepted colours for warning lights: Starter engaged,
> Alternator out and Low Oil pressure: OK Red for those, what about Parking
> Break set, Fuel pump 'on', Low fuel etc
>
>
> In the heavy iron world, Warnings (imperatives) are red, cautions are
> amber, notifications are about any other color . . . green, blue, magenta,
> etc.
> If you're going to flash a light for attention getting operation, 2 to 3
> flashes per second are legacy design goals.
>
>
> Bob . . .
>
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