Today's Message Index:
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1. 05:45 AM - Re: Source for the colied cord used on yoke type aircraft (b e)
2. 07:53 AM - Source for the coiled cord used on yoke type aircraft (Robert L. Nuckolls, III)
3. 08:57 AM - Coiled Cord (Dennis Johnson)
4. 02:16 PM - Military style external power receptacle question (johngoodman)
5. 02:42 PM - Re: Military style external power receptacle question (Bob White)
6. 03:12 PM - Re: Military style external power receptacle question (Bob Meyers)
7. 03:30 PM - Re: Military style external power receptacle question (johngoodman)
Message 1
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Subject: | Re: Source for the colied cord used on yoke type |
aircraft
Looking for 2 conductor, 6 inches long for each piece. 2 pieces needed now, but
if good source, would get several for my mechanic. Thanks Bob.
Barry
________________________________
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Saturday, May 23, 2009 11:40:52 PM
Subject: Re: AeroElectric-List: Source for the colied cord used on yoke type
aircraft
At 09:24 PM 5/23/2009, you wrote:
> Good evening all. Wishing all VETS a good weekend and may we always remember
those who have flown on before us.
>
> Am looking for a source of coiled cord. Does anyone know of one?
>
> I have looked at McMaster-Carr and they have some but I don't know one type from
the other. My mechanic says get the stuff that doesn't have the shiny outside
jacket, it breaks down too fast. I have googled and came up with some others,
there again I don't which type to get.
>
> Would like to have at least 24 guage or larger due to ease of working with the
larger guages (i.e. 28 guage is a pain)
How many conductors do you need and how long?
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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Message 2
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Subject: | Source for the coiled cord used on yoke type aircraft |
At 07:43 AM 5/24/2009, you wrote:
>Looking for 2 conductor, 6 inches long for each piece. 2 pieces
>needed now, but if good source, would get several for my mechanic. Thanks Bob.
Coiled cord is not something you find as a "by the foot"
bulk item. Coiled cords are custom made with wires,
of specified insulation color and material, a diameter,
coiled length, uncoiled length, and usually some straight
segments at each end. I've had occasion to order such
items several times over the years.
Coiled cords in the wild are prolific. The electrical/
electronic products world is fond of them and
they're readily available as new or surplus. Try
e-bay and search on coiled cord . . . you'll get
a hundred plus hits.
Your mechanic is correct, the "shiny" stuff tends
to be pretty cheesy plastic. However, the matt finish
are generally some form of more robust rubber. Getting
the wire size is problematic. Many small signal
applications (usually audio) don't need much
copper to do the job . . . on occasion you'll
find coil cords wired with copper foil wound
around a string core . . . nearly impossible
to make connections.
Coiled power adapter cords for cell phones
flash guns, dash mounted GPS receivers, etc. tend
to be heavier conductors made from real wire.
Every coiled cord has two conductors, some will
have more. I think many of the personality modules
for upscale cigar lighter adapters "talk back"
on one or more wires to the electronics in the plug.
These are more expensive . . . like $25 or so . . .
http://www.radioshack.com/product/index.jsp?productId=3336570
. . . but you might be able to get two cords
from cannibalizing the one device.
Somewhere in my skunk werks boxes I have some
2-conductor coiled cords I bought off E-bay
many moons ago. Things are somewhat scrambled
right now with the move but I'll dig around
and see what I can find. In any case, there
are dozens of opportunities out there to be
explored. Start with R-S, Best Buy, WalMart
electronics, etc. Of course, when you cut
a stock cord, only one end will have the
desired straight section, the cut end will
be coiled . . . but I'm sure you can deal
with that. I'll let you know about what
I find in the junk box.
Bob . . .
Message 3
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Greetings,
I needed a coiled cord and went to a local thrift store. Rummaging
through a box of miscellaneous stuff in the "electronics section," there
were dozens of devices with coiled cords attached. I bought four
different devices, each with a coiled cord attached to it. I don't
remember what they were originally connected to; I think one had a cigar
lighter power plug on one end and I think another one was a cell phone
battery charger. I think all four of them, combined, cost two dollars.
I took them home and cut off whatever was connected to one end and
examined the cut end to see how many wires were in the cable and how big
they were. Of the four I brought home, one was perfect, another would
have been adequate, and the other two either didn't have enough wires or
they were too tiny for my application.
It turned out great, cost almost nothing, and kept something out of the
landfill. Plus a charity got a couple of bucks.
Good luck,
Dennis
Message 4
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Subject: | Military style external power receptacle question |
Looking at Bob's wiring diagram in Appendix Z, 31A, for a military style external
power receptacle, what is the function of the smaller third pin? Just guessing
by the schematic it's hot power, just like the middle pin.
Inquiring minds want to know........
John
--------
#40572 QB Fuselage, wings finished. Finish Kit started.
N711JG reserved
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245177#245177
Message 5
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Subject: | Re: Military style external power receptacle question |
Hi John,
More or less. You have to supply power to the third pin to close the
ground power contactor. If you had such a connector, you could still
wire it up like the Piper ground power jack and just ignore the third
pin.
Bob W.
On Sun, 24 May 2009 14:15:14 -0700
"johngoodman" <johngoodman@earthlink.net> wrote:
>
> Looking at Bob's wiring diagram in Appendix Z, 31A, for a military style external
power receptacle, what is the function of the smaller third pin? Just guessing
by the schematic it's hot power, just like the middle pin.
> Inquiring minds want to know........
>
> John
>
> --------
> #40572 QB Fuselage, wings finished. Finish Kit started.
> N711JG reserved
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245177#245177
>
>
>
>
>
>
>
>
>
>
--
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 6
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Subject: | Re: Military style external power receptacle question |
It's a sense pin and it is hot, the same as the center pin. Without
the plug, it is not connected to the center pin. It can be used as the
drawing shows, to separate the source of power activating the
contactor from what is flowing through the contactor.
This allows you a way to take action on this pin going hot. In the
case of Z31A, that drawing shows polarity and overvoltage sensing
being done from that pin.
Bob Meyers
Building Sonex 982SX Web Site Index http://meyersfamily.org/Sonex982.html
On May 24, 2009, at 4:15 PM, johngoodman wrote:
> >
>
> Looking at Bob's wiring diagram in Appendix Z, 31A, for a military
> style external power receptacle, what is the function of the smaller
> third pin? Just guessing by the schematic it's hot power, just like
> the middle pin.
> Inquiring minds want to know........
>
> John
>
> --------
> #40572 QB Fuselage, wings finished. Finish Kit started.
> N711JG reserved
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245177#245177
>
>
Message 7
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Subject: | Re: Military style external power receptacle question |
Thanks for the response. I assume that the military and airlines use the pin for
the same thing.
John
--------
#40572 QB Fuselage, wings finished. Finish Kit started.
N711JG reserved
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245185#245185
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