Today's Message Index:
----------------------
1. 06:22 AM - B&C SD 8 Alternator ()
2. 07:12 AM - Re: PMag Preflight Check (Michael T. Ice)
3. 12:01 PM - Re: PMag Preflight Check (Peter Pengilly)
4. 01:17 PM - KX125 connector (David & Elaine Lamphere)
5. 02:30 PM - Re: KX125 connector (Peter Pengilly)
6. 02:53 PM - Re: Official AeroElectric-List FAQ (Frequently Asked Questions) (Randy)
7. 03:01 PM - Re: Official AeroElectric-List FAQ (Frequently Asked Questions) (6440 Auto Parts)
8. 05:14 PM - Re: PMag Preflight Check (Darwin N. Barrie)
9. 05:32 PM - Re: KX125 connector (David & Elaine Lamphere)
10. 07:30 PM - Re: KX125 connector ()
Message 1
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| Subject: | B&C SD 8 Alternator |
8/20/2007
Hello James, You wrote: "Eric himself does not believe that present
commercial units meet the FARs, but for experimental, they do not need to."
I am questioning your statement that stobe and position lights installed on
amateur built experimental aircraft do not need to meet FAR requirements.
What is your basis for that statement?
A) Each amateur built experimental aircraft will have a set of Operating
Limitations that are part of that aircraft's special airworthiness
certificate. The Operating Limitations will include the words:
"After completion of Phase I flight testing, unless appropriately equipped
for night and/or instrument flight in accordance with 91.205, this aircraft
is to be operated under VFR, day only."
B) FAR Sec. 91.205 paragraphs (c) (1) and (2) read:
"(c) Visual flight rules (night). For VFR flight at night, the following
instruments and equipment are required:
(2) Approved position lights.
(3) An approved aviation red or aviation white anticollision light system on
all U.S.-registered civil aircraft......skip....."
C) Here is a quote from the introduction to my table on the subject of
amateur built aircraft equipment requirements:
"The builder should note that some items required by the FAR's are
described in the FAR's as needing to be approved, but since there are no
certification standards established for amateur built experimental aircraft,
no formal individual item approval, such as meeting a TSO (Technical
Standard Order) or FAR Part 23, is required. However certain items must
interface properly with ATC (Air Traffic Control), other aircraft, or other
entities external to the aircraft. Transponders, communication radios,
exterior lighting and ELT's (Emergency Locator Transmitters) are examples of
such equipment. Therefore, the builder can expect that the initial
airworthiness inspection of his aircraft will require evidence that this
type of equipment in the aircraft is acceptable to the FAA."
D) It would appear that the inspector performing the original airworthiness
inspection of an amateur built experimental aircraft would have the
prerogative of insisting that the strobe and position lights of that
aircraft (if installed) meet the requirements of FAR Part 23 regarding
strobe and position light performance. The presumption being made that the
installation of such lights indicates an intention to fly at night on some
occasions.
Your comments?
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
--------------------------------- -----------------------------
Time: 01:57:41 PM PST US
From: "James Foerster" <jmfpublic@comcast.net>
Subject: Re: AeroElectric-List: B&C SD 8 Alternator
Bob wrote: "if one had LED based position and strobes, then perhaps
night VFR on 8A would be quite comfortably managed."
This is a good point, and opens up the topic of LED position lights. I
have a Jabiru J400, and the alternator is good for 20 amps max, closer
to 15 amps continuous. I had planned to put an SD20 alternator on the
crank splined shaft to get more total power, but the complication of two
alternators and two batteries seemed far too great for what will be
mainly a day and night VFR plane with pretensions.
The Whelan strobe and position light system has two lamps per wingtip
and the strobe supply. Each lamp is two amps, and the strobe supply is
6 amps. Yikes! That is 14 amps for running lights. The gold plated
pins that go into DB connectors and also the circular plastic locking
connectors are very easy to use, but should not be used for much over 4
amps. I could parallel these critters, but that gets to be more work.
By going to the LED system from either Kunzleman or GS, the current draw
is between 150 and 300 ma per wingtip. The strobe systems run 2 to 4
amps.
Are these wingtip nav lights equivalent to the Whelan incandescent? I
have bought both GS and Kunztleman systems for testing. I just made a
simple turntable marked off in degrees to rotate the wingtip unit to
measure lux output vs. angle. I'm using the nice primer on lighting
requirements that Eric Jones posted on his website, Perihelion Designs.
http://www.periheliondesign.com/
To measure the light output, I got a lux meter, calibrated in lux.
Photographic light meters can be converted from exposure value to lux,
but these meters are intrinsically logarithmic in response, and I don't
trust it.
The horizontal plane measurement will be relatively easy, but the
vertical plane may be harder. Eric himself does not believe that
present commercial units meet the FARs, but for experimental, they do
not need to. Of course, the low power strobes don't, but any strobe is
far better than none, and the logarithmic response of the eye comes to
our rescue here.
James Foerster, J400, wiring.
Message 2
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| Subject: | Re: PMag Preflight Check |
Stan,
I looked back at what I wrote and I can't seem to find where I would recommend
that anyone not check the onboard alternator function of the P-mag at the beginning
of each and every flight.
But (I think I) would not do so as (I) gained confidence in those units. Just a
personal thing Stan, I would likely still do the mag drop check, old habits die
hard.
Mike
----- Original Message -----
From: Speedy11@aol.com
To: aeroelectric-list@matronics.com
Sent: Sunday, August 19, 2007 5:35 PM
Subject: AeroElectric-List: PMag Preflight Check
Peter and Mike,
You both said you do not recommend checking the PMag internal alternator before
each flight. Will you please expand on your reasoning?
Thanks,
Stan Sutterfield
I think I would do as you suggest and not check the P-mag internal alternator
every
flight either.
------------------------------------------------------------------------------
Message 3
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| Subject: | PMag Preflight Check |
Hi Stan,
I don't think I recommended not to check the internal generator, just
that I don't do it. The generator is a back-up to a back-up, as the
ignition typically uses power from the alternator, then it could use
battery power, or it could use generator power, and the engine will
continue to run on the magneto alone in a pinch. There is certainly
nothing wrong with checking it every flight, I just don't do it.
My choice is not to do a complete run up check on (usually) other than
the first flight of the day, I check for dead cut, check for normal
temperatures & pressures, carry out the normal before take-off checks
and go - probably my glider towing background showing through. I have
nearly 300 hours on the aeroplane and am familiar with the normal feel
and have seen/felt/heard several abnormal 'feels'. I don't get too
bunched over systems check when the systems have show themselves to be
reliable in my aeroplane, operated the way I operate it.
Yours, Peter
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Speedy11@aol.com
Sent: 20 August 2007 02:35
Subject: AeroElectric-List: PMag Preflight Check
Peter and Mike,
You both said you do not recommend checking the PMag internal alternator
before each flight. Will you please expand on your reasoning?
Thanks,
Stan Sutterfield
I think I would do as you suggest and not check the P-mag internal
alternator every
flight either.
_____
<http://discover.aol.com/memed/aolcom30tour/?ncid=AOLAOF00020000000982>
.
Message 4
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I would like to know what type of connector is used for a KX125 NAV/COM as I
would like to wire up a used (wires were just cut off) unit and will
probably need to get some pins at least (or is this a "replace the whole
unit" situation?? I found the .pdf listing at the reference materials at
Aeroelectric (thanks!), but not what kind of connector it was (or at least I
didn't see it).
The RF connections look like they are soldered 90 deg, I "think" I can undo
them and attach new cable... but then again, I haven't started working on
them yet..
Thanks in advance,
Dave
Message 5
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Ebay is a great source for these pins and connectors
Peter
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of David
& Elaine Lamphere
Sent: 20 August 2007 21:17
Subject: AeroElectric-List: KX125 connector
<lamphere@vabb.com>
I would like to know what type of connector is used for a KX125 NAV/COM
as I
would like to wire up a used (wires were just cut off) unit and will
probably need to get some pins at least (or is this a "replace the whole
unit" situation?? I found the .pdf listing at the reference materials
at
Aeroelectric (thanks!), but not what kind of connector it was (or at
least I
didn't see it).
The RF connections look like they are soldered 90 deg, I "think" I can
undo
them and attach new cable... but then again, I haven't started working
on
them yet..
Thanks in advance,
Dave
Message 6
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| Subject: | Re: Official AeroElectric-List FAQ (Frequently Asked |
Questions)
Hi Matt I have tried a couple times to unsubcribe
(sales@6440autoparts.com) from the Aeroelectric list. I have gone though the
motions and all it says is "No changes were required to execute your
subscription/unsubscription request." Either something is wrong or this is
just way too technical for me.
Randy
Message 7
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| Subject: | Re: Official AeroElectric-List FAQ (Frequently Asked |
Questions)
OOOPs sorry this was intended to go straight to Matt not this list
sorry
----- Original Message -----
From: "Randy" <brinker@suddenlinkmail.com>
Sent: Monday, August 20, 2007 4:49 PM
Subject: Re: AeroElectric-List: Official AeroElectric-List FAQ (Frequently
Asked Questions)
> <brinker@suddenlinkmail.com>
>
> Hi Matt I have tried a couple times to unsubcribe
> (sales@6440autoparts.com) from the Aeroelectric list. I have gone though
> the motions and all it says is "No changes were required to execute your
> subscription/unsubscription request." Either something is wrong or this
> is just way too technical for me.
>
> Randy
>
>
> --
> 269.12.0/961 - Release Date: 8/19/2007 7:27 AM
>
>
Message 8
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| Subject: | Re: PMag Preflight Check |
I have two pmags, total time now 265 hours. This includes one
replacement and both sent in for updates during the annual. After each
reinstall I check to insure the mags were working at my idle setting.
Both were.
I didn't take the time to adjust the idle abnormally low to find the cut
off of each Pmag. (I did the first time) As long as they work at my idle
setting I was happy.
I have my panel set up so everything to start works from Left to Right
and reverse for shut down.
My process is as follows, Pmag switched breakers, ON, Master On, full
rich yada yada yada.
On run up, RPM 1700, key switch on both. Check left, back to Both, Check
Right, back to Both. Done deal. If there is a problem you'll know there.
Why do anything different?
During the one failure I had in flight (an internal magnet failure of my
left Pmag) I switched to the Right mag and proceeded on safely. If you
have a sudden rise in temps, rough running, loss of power, switch mags
to isolate and find out if it is a mag issue.
I firmly believe people are getting them in the set up mode and messing
up the timing. Set them up and leave them alone!!!
Darwin N. Barrie
Chandler AZ
Message 9
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| Subject: | Re: KX125 connector |
OK, but what do I look for?? I doubt they are listed as KX125 connectors..
:-)
----- Original Message -----
From: "Peter Pengilly" <peter@sportingaero.com>
Sent: Monday, August 20, 2007 5:28 PM
Subject: RE: AeroElectric-List: KX125 connector
> <peter@sportingaero.com>
>
> Ebay is a great source for these pins and connectors
>
> Peter
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of David
> & Elaine Lamphere
> Sent: 20 August 2007 21:17
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: KX125 connector
>
> <lamphere@vabb.com>
>
> I would like to know what type of connector is used for a KX125 NAV/COM
> as I
> would like to wire up a used (wires were just cut off) unit and will
> probably need to get some pins at least (or is this a "replace the whole
>
> unit" situation?? I found the .pdf listing at the reference materials
> at
> Aeroelectric (thanks!), but not what kind of connector it was (or at
> least I
> didn't see it).
>
> The RF connections look like they are soldered 90 deg, I "think" I can
> undo
> them and attach new cable... but then again, I haven't started working
> on
> them yet..
>
>
> Thanks in advance,
>
> Dave
>
>
>
Message 10
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| Subject: | Re: KX125 connector |
Here is some additional information. I think the 125 uses the same
connectors as most of the King series radios.
http://www.berkut13.com/extractor.htm
James Redmon - Race 13
Berkut #013 N97TX
http://www.berkut13.com
----- Original Message -----
From: "David & Elaine Lamphere" <lamphere@vabb.com>
Sent: Monday, August 20, 2007 7:33 PM
Subject: Re: AeroElectric-List: KX125 connector
> <lamphere@vabb.com>
>
> OK, but what do I look for?? I doubt they are listed as KX125 connectors..
> :-)
>
> ----- Original Message -----
> From: "Peter Pengilly" <peter@sportingaero.com>
> To: <aeroelectric-list@matronics.com>
> Sent: Monday, August 20, 2007 5:28 PM
> Subject: RE: AeroElectric-List: KX125 connector
>
>
>> <peter@sportingaero.com>
>>
>> Ebay is a great source for these pins and connectors
>>
>> Peter
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