Today's Message Index:
----------------------
1. 05:56 AM - Re: Z-16 Alternator disconnect (Robert L. Nuckolls, III)
2. 06:28 AM - Re: Z-14 alternator wire guage?? (Robert L. Nuckolls, III)
3. 09:25 AM - Pitot Wiring Connectors (Chuck Jensen)
4. 10:24 AM - Appendix Z (Robert L. Nuckolls, III)
5. 10:48 AM - Re: Pitot Wiring Connectors (Robert L. Nuckolls, III)
6. 11:21 AM - Re: Pitot Wiring Connectors (B Tomm)
7. 01:13 PM - Re: Pitot Wiring Connectors (Chuck Jensen)
8. 02:26 PM - Wiring the LR3C-14 (Ben Cunningham)
9. 02:28 PM - Re: Pitot Wiring Connectors (Neal George)
10. 02:42 PM - Re: Pitot Wiring Connectors (Bob White)
11. 02:53 PM - Re: Basic Electrical Architecture for review... (Marvin Haught)
12. 06:47 PM - Re: Pitot Wiring Connectors (Chuck Jensen)
13. 07:52 PM - 24V Heated Pitot (Joe Dubner)
Message 1
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Subject: | Re: Z-16 Alternator disconnect |
At 12:21 PM 10/2/2009, you wrote:
>
>I'm working off Z-16. Rev M. I have the Cessna type split master.
>For the sake of argument, if I were to eliminate the Alternator OV
>disconnect relay, then would I simply interrupt one of the yellow
>alt wires with my master in order to take the Alternator off-line?
Yes, if you wanted to load the switch that heavily.
You wouldn't have OV protection either. Recommend
you keep the relay.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 2
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Subject: | Re: Z-14 alternator wire guage?? |
At 12:50 AM 10/3/2009, you wrote:
>I have the latest revision of Z14 (REV N 7/14/09) which shows that
>the Main Alternator (40 amp) has a 4 AWG B-lead. BUT the Aux
>Alternator (also 40 amp) has a 10 AWG B-lead.
>
>Is there any possible logic in this discrepancy.
No, there were some artifacts of cut-n-paste that
didn't get combed out before the drawing was last
published. They've been corrected. The latest drawing
can be downloaded from the website.
>
>My calculations indicate that for a standard Lycoming set-up with
>main alternator at the front of the engine and the aux alternator on
>the rear of the engine 10 AWG should be more than enough for the
>B-leads for both, providing the battery is FWF.
>
>Am I missing something here.
I recommend 4AWG for all fat wires just because
you need to buy enough of it to take care of battery/
starter wiring. It's just handy to use the same
gage for all fat wires. I'd leave the Main alternator
at 4AWG and wire the Aux alternator for 20A as shown
on the corrected drawing.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 3
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Subject: | Pitot Wiring Connectors |
Curious if anyone had a solution for a connector problem. I sent off my
Velocity's sharkfin pitot for plating and when it came back, the two
wires to the heating elements were missing. The two wires had female
pin connectors which mate to the two male pins of the heating elements.
The female connector slides right over the male pins. By memory, the
pins are approx. 2-3/32nd inch in diameter and approximately 1/2" long.
I've seen similar pins on some other pitots, but have not been able to
find the connectors that I can attach termials ends to to hook up to the
plane wiring.
Anybody know of a source for female pin connectors that might work?
Chuck Jensen
Message 4
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Change 4 to Appendix Z has been published to correct some
errors. Figure Z-9 for Corvair Engines was developed in
cooperation with William Wynne and several of his customers.
That figure has been added to the suite of architecture
drawings.
http://aeroelectric.com/R12A/AppZ_12A4.pdf
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
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Subject: | Re: Pitot Wiring Connectors |
At 11:16 AM 10/3/2009, you wrote:
>Curious if anyone had a solution for a connector problem. I sent
>off my Velocity's sharkfin pitot for plating and when it came back,
>the two wires to the heating elements were missing. The two wires
>had female pin connectors which mate to the two male pins of the
>heating elements. The female connector slides right over the male
>pins. By memory, the pins are approx. 2-3/32nd inch in diameter and
>approximately 1/2" long. I've seen similar pins on some other
>pitots, but have not been able to find the connectors that I can
>attach termials ends to to hook up to the plane wiring.
>
>Anybody know of a source for female pin connectors that might work?
I've never seen a heated pitot tube that did not mate
the AN3113-1 connector. That doesn't mean that yours is
the same format . . . but I suspect it is.
The AN3115-1 is a pricey dude. ACS get about $60 for
it . . .
http://www.aircraftspruce.com/catalog/inpages/heatedptubes2.php
. . . and offer it under their own part number.
Others on the 'net get as much as $100 for it. I've
contemplated building these and even have a set of
drawings and a slitting saw to do the cross-cuts in
the receptacles. See . . .
http://www.aeroelectric.com/Pictures/Connectors/AN3115_Pitot_Tube_Heater/
I built one set of pins way back when and they
would probably have worked well. After looking
at the hassles of tooling up a housing and considering
just how many connectors I might sell . . . well, let's
just say the blush was off the rose.
If it were my airplane, I would solder pigtails onto
the extended pins and install my own connectors on the
ends of the pigtails. Say "power pole" style connector
like those used on B&C PM alternators?
Bob . . .
Message 6
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Subject: | Pitot Wiring Connectors |
Say "power pole" style connector
like those used on B&C PM alternators?
Bob, I've done a quick search for "power pole". Can you supply a link to a
supplier?
Bevan
RV7A wiring
Message 7
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Subject: | Pitot Wiring Connectors |
Bob,
Thanks for the link. Yes, it looks like that connector would fit,
though it is different than what was on the pitot initiatlly, which
worked fine, but was apparently 'home made'. The photos show the
original connectors on the old pitot in which the element had gone bad.
The connectors just 'pop off'.
The old pitot wassilver-soldered and servicing was 'not possible', but I
had the good fortune to find a like Kolhsman pitot on ebay for $15; find
of the decade, which I sent off to have plated, but then the connecting
wires became lost.
If I'm unable to find the bare connectors, perhaps I'll have to dig down
into the green moldy stuff and cough up for the one shown in your link.
Chuck Jensen
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Robert
L. Nuckolls, III
Sent: Saturday, October 03, 2009 1:44 PM
Subject: Re: AeroElectric-List: Pitot Wiring Connectors
<nuckolls.bob@aeroelectric.com>
At 11:16 AM 10/3/2009, you wrote:
>Curious if anyone had a solution for a connector problem. I sent
>off my Velocity's sharkfin pitot for plating and when it came back,
>the two wires to the heating elements were missing. The two wires
>had female pin connectors which mate to the two male pins of the
>heating elements. The female connector slides right over the male
>pins. By memory, the pins are approx. 2-3/32nd inch in diameter and
>approximately 1/2" long. I've seen similar pins on some other
>pitots, but have not been able to find the connectors that I can
>attach termials ends to to hook up to the plane wiring.
>
>Anybody know of a source for female pin connectors that might work?
I've never seen a heated pitot tube that did not mate
the AN3113-1 connector. That doesn't mean that yours is
the same format . . . but I suspect it is.
The AN3115-1 is a pricey dude. ACS get about $60 for
it . . .
http://www.aircraftspruce.com/catalog/inpages/heatedptubes2.php
. . . and offer it under their own part number.
Others on the 'net get as much as $100 for it. I've
contemplated building these and even have a set of
drawings and a slitting saw to do the cross-cuts in
the receptacles. See . . .
http://www.aeroelectric.com/Pictures/Connectors/AN3115_Pitot_Tube_Heater/
I built one set of pins way back when and they
would probably have worked well. After looking
at the hassles of tooling up a housing and considering
just how many connectors I might sell . . . well, let's
just say the blush was off the rose.
If it were my airplane, I would solder pigtails onto
the extended pins and install my own connectors on the
ends of the pigtails. Say "power pole" style connector
like those used on B&C PM alternators?
Bob . . .
Message 8
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Subject: | Wiring the LR3C-14 |
> I recently purchased the LR3C-14 voltage Reg. for my RV7.
>
> My panel was constructed by Aerotronics and I have added a diagram
> below of their schematic for my annunciator light circuit.
>
> I have added a sketch below of how I would like to wire the LR3,
> with terminal 5 feeding the low voltage light through plug P-1-0/6,
> and terminal 3 reading buss voltage downstream of the 2 amp breaker.
> Since the light would be wired through a test switch, I wanted to
> run this setup by everyone to see if it looked OK.
Thanks,
Ben
Message 9
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Subject: | Pitot Wiring Connectors |
Bevan -
Follow this link and find a table of Anderson PowerPole connectors at the
bottom right of page 79...
http://www.hamradio.com/web/newcat/hrocat5.pdf
neal
-----Original Message-----
Say "power pole" style connector
like those used on B&C PM alternators?
Bob, I've done a quick search for "power pole". Can you supply a link to a
supplier?
Bevan
RV7A wiring
Message 10
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Subject: | Re: Pitot Wiring Connectors |
Hi Chuck,
I may have a pitot connector that I don't need any longer. It will be
Monday before I can check to see what condition it's in. If it's OK
and will work for you, you are welcome to it.
Bob W.
On Sat, 3 Oct 2009 16:01:15 -0400
"Chuck Jensen" <cjensen@dts9000.com> wrote:
> Bob,
>
> Thanks for the link. Yes, it looks like that connector would fit, though it
is different than what was on the pitot initiatlly, which worked fine, but was
apparently 'home made'. The photos show the original connectors on the old pitot
in which the element had gone bad. The connectors just 'pop off'.
>
> The old pitot wassilver-soldered and servicing was 'not possible', but I had
the good fortune to find a like Kolhsman pitot on ebay for $15; find of the decade,
which I sent off to have plated, but then the connecting wires became lost.
>
> If I'm unable to find the bare connectors, perhaps I'll have to dig down into
the green moldy stuff and cough up for the one shown in your link.
>
> Chuck Jensen
>
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Robert
> L. Nuckolls, III
> Sent: Saturday, October 03, 2009 1:44 PM
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: Pitot Wiring Connectors
>
>
>
> At 11:16 AM 10/3/2009, you wrote:
> >Curious if anyone had a solution for a connector problem. I sent
> >off my Velocity's sharkfin pitot for plating and when it came back,
> >the two wires to the heating elements were missing. The two wires
> >had female pin connectors which mate to the two male pins of the
> >heating elements. The female connector slides right over the male
> >pins. By memory, the pins are approx. 2-3/32nd inch in diameter and
> >approximately 1/2" long. I've seen similar pins on some other
> >pitots, but have not been able to find the connectors that I can
> >attach termials ends to to hook up to the plane wiring.
> >
> >Anybody know of a source for female pin connectors that might work?
>
> I've never seen a heated pitot tube that did not mate
> the AN3113-1 connector. That doesn't mean that yours is
> the same format . . . but I suspect it is.
>
> The AN3115-1 is a pricey dude. ACS get about $60 for
> it . . .
>
> http://www.aircraftspruce.com/catalog/inpages/heatedptubes2.php
>
> . . . and offer it under their own part number.
>
> Others on the 'net get as much as $100 for it. I've
> contemplated building these and even have a set of
> drawings and a slitting saw to do the cross-cuts in
> the receptacles. See . . .
>
> http://www.aeroelectric.com/Pictures/Connectors/AN3115_Pitot_Tube_Heater/
>
>
> I built one set of pins way back when and they
> would probably have worked well. After looking
> at the hassles of tooling up a housing and considering
> just how many connectors I might sell . . . well, let's
> just say the blush was off the rose.
>
> If it were my airplane, I would solder pigtails onto
> the extended pins and install my own connectors on the
> ends of the pigtails. Say "power pole" style connector
> like those used on B&C PM alternators?
>
> Bob . . .
>
>
>
>
>
>
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://roblinstores.com/
Message 11
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Subject: | Re: Basic Electrical Architecture for review... |
Bob - Sent this earlier but did not get a reply. Thought I would send
it again.
M. Haught
Bob -
I'm a lurker on this site, but am in progress on a Pa22-20 project
(certified). How difficult would it be to use Z-11 in a certified
aircraft and get a 337 for that purpose? Has anyone done that
recently? Looks perfect for the project.
M. Haught
Robert L. Nuckolls, III wrote:
> <nuckolls.bob@aeroelectric.com>
>
> At 09:57 PM 9/30/2009, you wrote:
>> Greetings all,
>>
>> I've attached an electrical architecture (in Bob's drawing style) for
>> your review. It's for the Longeze I'm restoring. I'm doing the
>> restoration in multiple stages. Although it had ~1000 Hrs. on it
>> when I obtained it, it's been grounded since I received it. The
>> attached architecture is intended to be more robust and fault
>> tolerant than what was there (which I'm sure it is...) and certainly
>> not worse in that regard than a TC aircraft (though not as good as a
>> design with an essential bus).
>>
>> Down the road a bit, I intend to replace the vacuum system and
>> associated instruments with electric, plus a backup alternator and an
>> architecture with an essential bus.
>>
>> I would appreciate comments on the architecture and, specifically, on
>> any unmitigated faults (especially those that would not be acceptable
>> in a TC aircraft).
>>
>> The aircraft is VFR only.
>>
>> Thanks in advance,
>
> You appear to have a generic distribution system
> and questions that go to departures from recommendations
> offered in the Z-figures.
>
> What was it about Z-11 as depicted at:
>
> http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z11M.pdf
>
> or features depicted in other z-figures that
> prompted the changes in direction?
>
>
> Bob . . .
>
> ---------------------------------------
> ( . . . a long habit of not thinking )
> ( a thing wrong, gives it a superficial )
> ( appearance of being right . . . )
> ( )
> ( -Thomas Paine 1776- )
> ---------------------------------------
>
>
Message 12
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Subject: | Pitot Wiring Connectors |
Hi, bob,
See what you have. I checked Neals suggestion and had seen if in a couple other
searches. It appears to be a tension loaded flat blade that is designed to
mate up with another flat blade. With both blades tensioned, the pressure is
enough to form a good connection between them. A blade to pin connection might
work, but that's certainly not the way it was intended.
Let me know and if works, we enter some high level negotiations for it. lol
Chuck Jensen
Diversified Technologies
2680 Westcott Blvd
Knoxville, TN 37931
Phn: 865-539-9000 x100
Cell: 865-406-9001
Fax: 865-539-9001
cjensen@dts9000.com
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Bob
White
Sent: Saturday, October 03, 2009 5:34 PM
Subject: Re: AeroElectric-List: Pitot Wiring Connectors
Hi Chuck,
I may have a pitot connector that I don't need any longer. It will be
Monday before I can check to see what condition it's in. If it's OK
and will work for you, you are welcome to it.
Bob W.
On Sat, 3 Oct 2009 16:01:15 -0400
"Chuck Jensen" <cjensen@dts9000.com> wrote:
> Bob,
>
> Thanks for the link. Yes, it looks like that connector would fit, though it
is different than what was on the pitot initiatlly, which worked fine, but was
apparently 'home made'. The photos show the original connectors on the old pitot
in which the element had gone bad. The connectors just 'pop off'.
>
> The old pitot wassilver-soldered and servicing was 'not possible', but I had
the good fortune to find a like Kolhsman pitot on ebay for $15; find of the decade,
which I sent off to have plated, but then the connecting wires became lost.
>
> If I'm unable to find the bare connectors, perhaps I'll have to dig down into
the green moldy stuff and cough up for the one shown in your link.
>
> Chuck Jensen
>
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Robert
> L. Nuckolls, III
> Sent: Saturday, October 03, 2009 1:44 PM
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: Pitot Wiring Connectors
>
>
>
> At 11:16 AM 10/3/2009, you wrote:
> >Curious if anyone had a solution for a connector problem. I sent
> >off my Velocity's sharkfin pitot for plating and when it came back,
> >the two wires to the heating elements were missing. The two wires
> >had female pin connectors which mate to the two male pins of the
> >heating elements. The female connector slides right over the male
> >pins. By memory, the pins are approx. 2-3/32nd inch in diameter and
> >approximately 1/2" long. I've seen similar pins on some other
> >pitots, but have not been able to find the connectors that I can
> >attach termials ends to to hook up to the plane wiring.
> >
> >Anybody know of a source for female pin connectors that might work?
>
> I've never seen a heated pitot tube that did not mate
> the AN3113-1 connector. That doesn't mean that yours is
> the same format . . . but I suspect it is.
>
> The AN3115-1 is a pricey dude. ACS get about $60 for
> it . . .
>
> http://www.aircraftspruce.com/catalog/inpages/heatedptubes2.php
>
> . . . and offer it under their own part number.
>
> Others on the 'net get as much as $100 for it. I've
> contemplated building these and even have a set of
> drawings and a slitting saw to do the cross-cuts in
> the receptacles. See . . .
>
> http://www.aeroelectric.com/Pictures/Connectors/AN3115_Pitot_Tube_Heater/
>
>
> I built one set of pins way back when and they
> would probably have worked well. After looking
> at the hassles of tooling up a housing and considering
> just how many connectors I might sell . . . well, let's
> just say the blush was off the rose.
>
> If it were my airplane, I would solder pigtails onto
> the extended pins and install my own connectors on the
> ends of the pigtails. Say "power pole" style connector
> like those used on B&C PM alternators?
>
> Bob . . .
>
>
>
>
>
>
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://roblinstores.com/
Message 13
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Subject: | 24V Heated Pitot |
I have a chromed AN 5812-1 14V heated pitot tube from Aero Instrument
Co. and need the exact equivalent in a 12V model. Anyone care to trade?
Anticipating some responses that lead to thread drift: I don't want to
change the heating element. And yes, it gets hot on 12V but not hot
enough to suit me. I rather just swap with someone who has a 12V model
and a 24V airplane.
Thanks,
Joe
Independence, OR
http://www.mail2600.com/position
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