Today's Message Index:
----------------------
1. 07:53 AM - wire bundle protection (Eric Schlanser)
2. 08:28 AM - Re: Flakey UPS AT GPS/COM ()
3. 11:04 AM - Re: wire bundle protection (Remi Khu)
4. 12:54 PM - Re: wire bundle protection (Steve Hamer)
5. 01:18 PM - Re: Continental IO-240: Alternator quit working, Coupling Failed (FlyboyTR)
6. 01:34 PM - Re: Re: Continental IO-240: Alternator quit working, Coupling Failed (Robert L. Nuckolls, III)
7. 01:39 PM - Re: Confusing (Robert L. Nuckolls, III)
8. 01:43 PM - Re: Need help with desicsion (Robert L. Nuckolls, III)
9. 02:01 PM - Re: wire bundle protection (Chris Barber)
Message 1
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| Subject: | wire bundle protection |
What can be used as a flexible conduit when running wire bundles-along a
tube and fabric airplane frame?
-In auto circles they use corregated plastic tubing that is slit along on
e side. The wire bundle can then be inserted inside. Is this material accep
table? It seems more durable than the old style spiral wrap and also easier
to apply to a wire bundle.
-
Thanks,
Eric - in Michigan
----=0A=0A=0A
Message 2
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| Subject: | Flakey UPS AT GPS/COM |
Dean,
The other option you have is to remove the back-plate socket and plug it
in directly. That worked for me. It just makes me reach a bit more to
remove it for updating (SL 60).
Glenn
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Don
Sent: Sunday, October 25, 2009 11:40 PM
Subject: RE: AeroElectric-List: Flakey UPS AT GPS/COM
Dean,
My Garmin 480 had the same problems. The solution was to push the unit
in a
little harder before the cam is turned. The units must seat all the way
to
work and the cam can't do that if the unit is not in far enough first.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of DEAN
PSIROPOULOS
Sent: Sunday, October 25, 2009 7:32 PM
Subject: AeroElectric-List: Flakey UPS AT GPS/COM
<dean.psiropoulos@verizon.net>
I know there are several folks out there who have UPS AT (now Garmin)
Apollo
GX-60/65, SL-30/40 avionics. I've followed the installation
instructions
very carefully but I'm still experiencing some issues that seem
attributable
to the connector pins on the unit occasionally not making good contact
with
the connector/sockets on the tray. My GX-65 has to have a pin grounded
in
order for the unit to NOT go into simulation mode. The wonderful
consequence of this DUMB design decision is that unit has been entering
SIM
mode occasionally after I turn the avionics on. I can make it stop if I
turn it off and joggle the radio in the tray a little and then turn the
unit
on again. I checked the connectors on the back of the tray and they are
not
loose and they are installed on the backside of the tray per the
instructions. There don't seem to be any loose pins and none of the
wires
are loose, broken or otherwise unattached. I've installed the unit in
the
tray with the cam per instructions taking care not to over tighten but
to
make sure the cam is as tight as seems possible. I was also getting a
COM
radio failure on the same unit but the radio tested out fine, after
jiggling
the antenna connector on the back of the tray I stopped getting the
failure
but am wondering how long that will last.
Question, is anyone else experiencing this? Is there a cure? Having to
jiggle a $3000.00 piece of equipment back and forth in the tray to make
it
work is outrageous. Please advise!
Bob is there any similarity in the connector pin world to the correlary
that
a switch will fail sooner if not used (due to the contacts not rubbing
over
each other and keeping corrosion at bay)? UPS AT uses DB-15 and DB-30
connectors with crimp on gold plated pins/sockets which I used with
tefzel
wire grounded to a forest of tabs. I have a 2 gauge tefzel wire from
the
tabs to the battery ground. Please advise.
Thanks all....
Dean Psiropoulos
N197DM RV-6A
Tampa bay area
Message 3
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| Subject: | Re: wire bundle protection |
I used lengths of shower curtain rod covers for the chase in my cozy project. They're
covered by the arm rests though. Just another way to skin a cat.
-- Remi
Message 4
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| Subject: | Re: wire bundle protection |
Eric,
You can get a roll of half inch drip system tube at you local hardware
store for a few bucks. It's light, flexible and easy to work with.
Steve Hamer
RV-6
Apple Valley, Ca
Message 5
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| Subject: | Re: Continental IO-240: Alternator quit working, Coupling |
Failed
The past 254 hours have been great...until yesterday. My alternator coupling failed...AGAIN!
I had purchased a rebuilt unit from Drake Air (as noted above
in this thread). $450 versus $1,600 from TCM for a new one.
Is there any reason this part should fail so soon? Oil, hours, temps, alternator
load, how the load is applied, etc?
I emailed Drake Air this morning and was inquiring as to why their part failed...prematurely...in
my opinion!
I have to pull my engine to remove the alternator. ...insult to injury! :?
Again...I welcome input from the forum!
Travis :)
--------
Travis Rayner
Mobile, AL
Skystar Vixen, N-789DF
Continental IO-240, Prince P-Tip Prop
ADI-II Autopilot
AnyWhereMap Navigation with weather
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269543#269543
Message 6
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| Subject: | Re: Continental IO-240: Alternator quit working, |
Coupling Failed
>
>I emailed Drake Air this morning and was inquiring as to why their
>part failed...prematurely...in my opinion!
>
>I have to pull my engine to remove the alternator. ...insult to injury! :?
>
>Again...I welcome input from the forum!
In what manner did it fail? Was it the
same failure mode as the first one?
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 7
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At 01:04 AM 10/26/2009, you wrote:
>Hey guys -
>I have a puzzling question for you. At least it's puzzling to me.
>I'm studying my downloaded engine monitor data and it appears that
>when I transmit on the radio that I get an amperage spike and a
>simultaneous voltage drop. That makes sense - but, at the same time
>my OAT readings drop several degrees F and then recover to normal
>after the transmission.
>The OAT probe is in a NACA duct on the bottom of the wing and it is
>exposed to the bent wire radio antenna.
>Is it possible that the signal from the radio antenna is affecting
>the OAT readings when the radio signal hits the OAT probe?
Sounds like a susceptibility problem with
the instrumentation system. The offending
stimulus (comm transmitter) gets into the
instrumentation electronics via ship's wiring.
Systems destined for installation in TC aircraft
are tested for this effect and filters sufficient
to the task are included inside the instrument
enclosure.
Try putting a dummy load on your antenna coax
AT THE ANTENNA. See:
http://aeroelectric.com/Pictures/Tools/RF_Antenna_Test_Tools/DummyLoad.jpg
if the problem goes away with the dummy load
attached, then you need to add filtering to
the instrumentation system or see if moving the
antenna further way does the job. If the problem
does NOT go away, then you've got a shield ground
open in the feedline between radio and antenna.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 8
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| Subject: | Re: Need help with desicsion |
At 06:13 PM 10/25/2009, you wrote:
>
>I believe you slipped a zero. 6 awg is 0.4 mOhms per foot so the
>voltage drop on 4 feet is just under 0.1 volts.
Oops! Good eye. You're correct.
>An easy rule of thumb to remember is 10 awg wire is 1 milliohm per 1
>foot, every three wire sizes doubles the resistance. (so 7 awg
>would be about 2 milliohms per foot.)
Yup, wrote about that in several places . . . but
drop to 7 gets you 0.5 mOhm/ft and 6 awg would necessarily
be lower. See:
http://www.aeroelectric.com/articles/wiresize.pdf
Thanks for the heads-up
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 9
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| Subject: | wire bundle protection |
I love this stuff.
http://cableorganizer.com/f6-wrap-around/
I got the fire retardant version. Really easy to use and looks really nice
. IMAO.
All the best,
Christopher Barber
Houston
Velocity SE w/rotary 13B
________________________________
From: owner-aeroelectric-list-server@matronics.com [owner-aeroelectric-list
-server@matronics.com] On Behalf Of Steve Hamer [s.hamer@verizon.net]
Sent: Monday, October 26, 2009 2:52 PM
Subject: Re: AeroElectric-List: wire bundle protection
Eric,
You can get a roll of half inch drip system tube at you local hardware stor
e for a few bucks. It's light, flexible and easy to work with.
Steve Hamer
RV-6
Apple Valley, Ca
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