Today's Message Index:
----------------------
1. 06:05 AM - Sierra Electrical Problem ()
2. 08:31 AM - Re: Using D-Sub extract tool (Robert L. Nuckolls, III)
3. 08:32 AM - Re: Sierra Electrical Problem (Robert L. Nuckolls, III)
4. 09:01 AM - Re: Rotax Rectifier Wiring (Robert L. Nuckolls, III)
5. 09:04 AM - Re: Sorry!! (Robert L. Nuckolls, III)
6. 09:40 AM - Re: Using D-Sub extract tool (Bob White)
7. 09:51 AM - Re: Sorry!! (Kevin Horton)
8. 09:51 AM - Our Aeronautical Heritage ()
9. 10:16 AM - Rotax 912 vr 965-347 (Bill and Marsha)
10. 10:21 AM - Re: Antenna in Wingtip (Robert L. Nuckolls, III)
11. 10:27 AM - Re: Antenna Polarity?? (Robert L. Nuckolls, III)
12. 10:31 AM - Re: Rotax 912 vr 965-347 (Robert L. Nuckolls, III)
13. 10:35 AM - Re: Sorry!! (Robert L. Nuckolls, III)
14. 10:37 AM - Re: Using D-Sub extract tool (Robert L. Nuckolls, III)
15. 11:05 AM - Re: Rotax 912 vr 965-347 (Dave N6030X)
16. 11:39 AM - Re: Rotax 912 vr 965-347 (Robert L. Nuckolls, III)
17. 12:11 PM - Another contactor question (John Erickson)
18. 12:35 PM - Re: Rotax 912 vr 965-347 (Dave N6030X)
19. 01:04 PM - Re: Another contactor question (Robert L. Nuckolls, III)
20. 01:28 PM - Re: Our Aeronautical Heritage (Bill Boyd)
21. 01:34 PM - Re: Antenna in Wingtip (Bill Boyd)
22. 02:05 PM - Re: Rotax 912 vr 965-347 (Bill Denton)
23. 02:28 PM - Re: Rotax 912 vr 965-347 (Robert L. Nuckolls, III)
24. 02:30 PM - Test (George Braly)
25. 03:02 PM - Re: Sorry!! (Charlie England)
26. 03:08 PM - Re: Rotax Rectifier Wiring (Martin Pohl)
27. 03:25 PM - Re: Test (Rick Lindstrom)
28. 05:33 PM - Re: Sorry!! (donlang@att.net)
29. 06:47 PM - Attaching Shield to "Lo"/Ground Wire at Intercom (r falstad)
30. 07:40 PM - Re: Antenna in Wingtip (N395V)
31. 08:48 PM - Re: Attaching Shield to "Lo"/Ground Wire at Intercom (glaesers)
32. 09:53 PM - In recognition of our teachers . . . (Robert L. Nuckolls, III)
Message 1
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| Subject: | Sierra Electrical Problem |
2/10/2007
Hello Bob Nuckolls, A tardy "thank you" for your great response to my
request for help on this subject -- I wanted to wait until the FBO had
finished fumbling around trying to solve the problem.
I won't bore you with the sad, gory FBO effort details, but they involve no
apparent trouble shooting, eventually ordering three different relays,
making a $450 twelve volt relay non returnable by mistakenly installing it
and applying 24 volts to it, and so on.
You are correct in your assessment of relay type -- an Eaton (Cutler Hammer)
6041H200 was finally installed.
Thanks to your circuit diagram the Sierra owner and I now understand how the
circuit is supposed to work. It is still not clear to us how just replacing
the starter relay could possibly solve the problem of intermittent cyclic
starter activation when just the battery master switch is closed. It appears
that the only source of electricity to close the starter relay must come
from the ignition and start switch which was in the off position and not
touched.
We won't get our hands on the airplane until Monday to examine the FBO
efforts. Thanks again for your help.
OC -- The best investment we can make is to gather knowledge.
PS: One benefit to come from this is the owner deciding that purchasing the
manuals to go with his airplane is a good thing to do.
----------------- FROM BOB NUCKOLLS ------------------
> This may be your lucky day. The ONLY TC aircraft wring diagrams
> book I possess is for the Sundowner/Sierra series aircraft. I've
> scanned the DC power, Ignition and Starter pages and posted
> at:
>
> http://www.aeroelectric.com/Reference_Docs/BE23-24_Bat_Ign_Strtr.pdf
>
> I'd put a voltmeter on the hot coil terminal of K102 contactor
> and see if there's a stray voltage causing the contactor to
> close intermittently.
>
> I'd have to go check the data on that contactor but I think
> it's a cutler-hammer 6041H series device which you can probably
> find off the shelf for a lot less. Send me a photo of the part
> and I can tell you more.
>
> Bob . . .
Message 2
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| Subject: | Re: Using D-Sub extract tool |
Just finished up a piece that had been languishing on my hard drive
for more months than I'd like to admit. The following shop notes
http://aeroelectric.com/articles/D-Sub_Pin/Pin-Extraction.html
. . . has been added to the What's New and Articles index of the
website. Critical review and proof-readers welcome.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 3
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| Subject: | Re: Sierra Electrical Problem |
At 09:00 AM 2/10/2007 -0500, you wrote:
>
>2/10/2007
>
>Hello Bob Nuckolls, A tardy "thank you" for your great response to my
>request for help on this subject -- I wanted to wait until the FBO had
>finished fumbling around trying to solve the problem.
>
>I won't bore you with the sad, gory FBO effort details, but they involve
>no apparent trouble shooting, eventually ordering three different relays,
>making a $450 twelve volt relay non returnable by mistakenly installing it
>and applying 24 volts to it, and so on.
>
>You are correct in your assessment of relay type -- an Eaton (Cutler
>Hammer) 6041H200 was finally installed.
>
>Thanks to your circuit diagram the Sierra owner and I now understand how
>the circuit is supposed to work. It is still not clear to us how just
>replacing the starter relay could possibly solve the problem of
>intermittent cyclic starter activation when just the battery master switch
>is closed. It appears that the only source of electricity to close the
>starter relay must come from the ignition and start switch which was in
>the off position and not touched.
>
>We won't get our hands on the airplane until Monday to examine the FBO
>efforts. Thanks again for your help.
I'm pleased that the story has a pleasant if not thrifty ending.
If you could retrieve the old contactor, I'd REALLY like to do a
tear-down inspection.
Bob . . .
Message 4
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| Subject: | Re: Rotax Rectifier Wiring |
At 11:37 AM 2/9/2007 -0500, you wrote:
><vaughnray@bvunet.net>
>
>Martin,
>
>Based on what I've heard from Europa builders before me, the regulater
>will destruct if you disconnect the "C" lead from the "B+" and "R" leads.
>It looks to me like drawing Z-16 would do that, although I am dangerously
>ignorant when it comes to electronics. I am waiting to speak to the
>Lockwood engineers before I proceed with my schematics. If I was you, I
>would not proceed until I fully understood the whats and whys of this
>issue. That is why I can sign off with.....
>
>Confused enough to consider selling the kit
This is one of several reasons why I like to get a real
schematic of the device being discussed. This is especially
important when you have conflicting anecdotal data. One of
my favorite minor philosophers once offered:
"There are no contradictions. When you believe you've
encountered a contradiction, examine your premises.
You will discover that one of them is wrong."
>>The Rotax-Installation Manual, engine electric, 17-1, says: "Attention:
>>Do not interupt circuit between Terminal C and +B of rectifier-regulator
>>during engine run, as otherwise charging will stop."
I'll suggest it means exactly what it says. Unless C is
connected, the regulator shuts down.
>>What does that mean? Can I switch of the rectifier/regulator i.e.
>>charging process with interupt of C/+B (similar to switching of the
>>alternator field switch)?
Some time ago, one of the readers on the List supplied me
with the following schematic:
http://www.aeroelectric.com/Pictures/Regulators/regul_912.jpg
An examination of the circuit reveals that terminal "C"
is the voltage sense lead for the regulator. Further,
it supplies power necessary to power up the regulator's
control circuits. Removal of power from this lead will cause
the system to simply shut down.
Figure Z-16 utilized terminal C as a shutdown or control
pin for about ten years with no reported difficulties. More
recently (June of last year) we modified Z-16 to move the
the control relay to the AC side of the regulator rectifier
as shown in the latest revision to Appendiz Z at:
http://aeroelectric.com/articles/Rev11/AppZ_R11J.pdf
Relays are a lot happier controlling AC voltage than DC
voltage and it seems a better location as shown . . .
but either configuration functions as intended.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 5
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At 12:43 PM 2/8/2007 -0500, you wrote:
>
>
>Sorry, I keep forgetting about no pix on the Matronics list. I'm on too
>many lists!!
I thought Matt had revised the filters to allow attachments.
Was this reversed while I wasn't watching?
Bob . . .
Message 6
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| Subject: | Re: Using D-Sub extract tool |
On Sat, 10 Feb 2007 10:29:33 -0600
"Robert L. Nuckolls, III" <nuckollsr@cox.net> wrote:
>
>
>
> Just finished up a piece that had been languishing on my hard drive
> for more months than I'd like to admit. The following shop notes
>
> http://aeroelectric.com/articles/D-Sub_Pin/Pin-Extraction.html
>
> . . . has been added to the What's New and Articles index of the
> website. Critical review and proof-readers welcome.
>
>
>
> Bob . . .
>
> ----------------------------------------
> ( IF one aspires to be "world class", )
> ( what ever you do must be exercised )
> ( EVERY day . . . )
> ( R. L. Nuckolls III )
> ----------------------------------------
>
>
Nice write up Bob. I had never paid any attention to the little hole.
The cheap gray extractor that I used for a while always gave me a lot
more trouble. I notice that the metal barrel only wraps half way
around. The red/white one is more like 3/4. I also just noticed that
the red end is only a half circle like the cheap gray one so maybe it
was meant for insertion only. I've never seen a need for an insertion
tool on these pins.
Bob W.
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
First Flight: 11/23/2006 7:50AM - 2.4 Hours Total Time
Cables for your rotary installation - http://www.roblinphoto.com/shop/
Message 7
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On 10 Feb 2007, at 12:04, Robert L. Nuckolls, III wrote:
> At 12:43 PM 2/8/2007 -0500, you wrote:
>
>>
>>
>> Sorry, I keep forgetting about no pix on the Matronics list. I'm
>> on too
>> many lists!!
>
> I thought Matt had revised the filters to allow attachments.
> Was this reversed while I wasn't watching?
I believe there is a limit on file size for attachments, and only
certain file extensions are allowed (bmp doc dwg dxf gif jpg pdf png
txt xls).
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://www.kilohotel.com/rv8
do not archive
Message 8
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| Subject: | Our Aeronautical Heritage |
2/10/2007
Dear Fellow Listers, Please forgive the off topic posting.
At dinner last night the subject of the scope of wars came up and I made a
comment to a fellow diner about the scope of WW II, particularly the rate of
ship and airplane construction, and mentioned a few numbers. She scoffed at
those numbers as ridiculously high. So today I did a bit of research and
came across:
"The plant Ford built at Willow Run had an assembly line that was a mile
long. At the peak of it's production, the assembly line was producing a
Liberator an hour. Willow Run had its own airfield. It employed 30,000
workers."
I am sharing that with her, but I'd like to share the below with you:
AN EIGHT-YEAR-OLD AT WILLOW RUN
"I seldom got more than a few miles, usually on foot, away from our home on
Strawberry lake. It was 1944 and no one travelled much due to the war. My
brother Bob worked at Willow Run, just a name to me. I knew that they built
the B-24 Liberator there. One day, I think a Sunday, my Brother took me to
Willow Run. The workers were at home. Now that I am 69 years old I realize,
in retrospect, the impact that magic place had on me. My brother said that
it was the biggest factory in the world under one roof at that time. We
started at the beginning of the assembly line; mountains of strange objects.
Nuts, bolts, wheels, struts, wing spars, rib sections, things I had never
seen before, tail sections, fuselage sections, wings. It seemed we would
never get to the end but we did and there sat a finished B-24. The climax! I
can still feel the awe of the workers who built such a marvel and the image
in my mind of the heroes that would take that huge plane into harms way. I
was embarrassed when I cried then from sheer emotion. "Big boys don't cry."
I'm crying now as I write but there is no embarrassment. I Think that day
might just have been the day that set me on a quest to become a fighter for
my country. My heroes have never been movie stars. My heroes have always
been, from 8 years old onward , the men like those who manned that B-24; the
knights, the soldiers who made America the strongest nation in the world!"
6/5/2005 - T/Sgt. Gary R. Downing U.S.A.F. Retired.
There is more on this subject on the below web site.
http://www.liberatorcrew.com/06_B-24_Prod.htm
OC -- The best investment we can make is to gather knowledge.
PS: It took me decades to extract the mystery of the source of my
aeronautical epiphany / obsession from my memory. I was moved by Gary R.
Downing's description of his.
Message 9
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| Subject: | Rotax 912 vr 965-347 |
Has anyone found an acceptable substatute, rectafier regulator, for
the 912-914 rotax? Better? cheaper? Doc
Message 10
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| Subject: | Re: Antenna in Wingtip |
At 10:31 PM 2/7/2007 -0600, you wrote:
>
>It doesn't use a ground plane. It's more like a modified J-pole I think.
>
>Dave Morris
But a j-pole has two elements, on a 1/2 and the other 1/4 wavelength long
. . . and wouldn't fit under a wing tip fairing.
Bob . . .
Message 11
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| Subject: | Re: Antenna Polarity?? |
At 08:43 AM 2/8/2007 -0500, you wrote:
><bbradburry@allvantage.com>
>
>OK, here is an update...
>This plane is a Lancair Legacy, so I got in touch with the Lancair
>avionics department. They were able to help me to the point where I was
>able to determine which on the two screws should be attached to the center
>conductor and which to the shield. So, initial polarization
>question/problem solved.
>However,...
>I noticed in their parts catalog that this antenna is designed (as Bob
>remarked) for install in a metal aircraft (Vans RV ??)
>However,...
>This antenna was glassed in by the Lancair factory when the wing parts
>were built, so it was provided by Lancair???? DUH! WHY??
>The avionics guy I talked with assured me that the antenna works fine in
>the Legacy....
>I assume that if I can figure out some way to get the SWR checked on the
>antenna and if the SWR is below 2.0, it will work ok??
>
>Thanks for the assistance.
A wet string will function to some level. Even a measurement
of SWR is an exceedingly subjective measure of antenna performance.
The acid test is fly it.
Pick a handy cruising altitude and tune in stations at various
distances from your location. Do 1 degree/second, 360-degree turns
and note the bearing arcs (directions relative to aircraft yaw
axis) over which you can still hear the station.
Make your judgements from these kinds of tests stacked against
your personal requirements/wishes. Without substantiating data
from similar tests, anecdotes like Lancair's "works fine" are
essentially meaningless.
Bob . . .
Message 12
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| Subject: | Re: Rotax 912 vr 965-347 |
At 12:15 PM 2/10/2007 -0600, you wrote:
><docyukon@ptcnet.net>
>
> Has anyone found an acceptable substatute, rectafier regulator,
> for the 912-914 rotax? Better? cheaper? Doc
There was a product offered some years ago that was popular with
the ultra-light crowd but I don't recall the name off hand. Anyone
else remember?
A modern, processor controlled regulator/rectifier for PM alternators is
on my list of things to do when the drive stand is up and runnning.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 13
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>>
>> I thought Matt had revised the filters to allow attachments.
>> Was this reversed while I wasn't watching?
>
>I believe there is a limit on file size for attachments, and only
>certain file extensions are allowed (bmp doc dwg dxf gif jpg pdf png
>txt xls).
Yeah. That rings a bell. I just stuck a small image on
my test-post. I'll take advantage of that more often.
I've not had much incentive to use this feature because
of easy access to a server that supports my website.
But I'll use the attachment method more with the intent
of encouraging others to do likewise. Pictures are a VERY
important component of accurate communication.
Bob . . .
Message 14
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| Subject: | Re: Using D-Sub extract tool |
>
> >
> >
>Nice write up Bob. I had never paid any attention to the little hole.
>
>The cheap gray extractor that I used for a while always gave me a lot
>more trouble. I notice that the metal barrel only wraps half way
>around. The red/white one is more like 3/4. I also just noticed that
>the red end is only a half circle like the cheap gray one so maybe it
>was meant for insertion only. I've never seen a need for an insertion
>tool on these pins.
>
>Bob W.
AHA! You've provided some proof-reading support without even trying.
The RED end is for insertion and is slightly smaller so as to purposely
avoid slipping over the wire grip. The WHITE end is for extraction. It's
the only one with the hole in it.
Thanks for bringing this up. I'll add this to the Shop Notes.
Bob . . .
Message 15
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| Subject: | Re: Rotax 912 vr 965-347 |
The Corvair guys are using the John Deere dynamo and regulator
http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg
Dave Morris
At 12:30 PM 2/10/2007, you wrote:
><nuckollsr@cox.net>
>
>At 12:15 PM 2/10/2007 -0600, you wrote:
>
>><docyukon@ptcnet.net>
>>
>> Has anyone found an acceptable substatute, rectafier
>> regulator, for the 912-914 rotax? Better? cheaper? Doc
>
>
>There was a product offered some years ago that was popular with
>the ultra-light crowd but I don't recall the name off hand. Anyone
>else remember?
>
>A modern, processor controlled regulator/rectifier for PM alternators is
>on my list of things to do when the drive stand is up and runnning.
>
>
> Bob . . .
>
> ----------------------------------------
> ( IF one aspires to be "world class", )
> ( what ever you do must be exercised )
> ( EVERY day . . . )
> ( R. L. Nuckolls III )
> ----------------------------------------
>
>
Message 16
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| Subject: | Re: Rotax 912 vr 965-347 |
At 01:03 PM 2/10/2007 -0600, you wrote:
>
>The Corvair guys are using the John Deere dynamo and regulator
>http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
>http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg
>
>Dave Morris
Thank you sir!
Hmmm . . . interesting pulley ratios . . . wonder how much
snort they get out of this thing a ramp idle and taxi speeds.
Of course, the smaller pulley ratio reduces stress on the
regulator at cruise. I suspect there's an opportunity for some
system performance optimization here.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 17
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| Subject: | Another contactor question |
OK, here's a stupid question (and I'm probably a stupid person anyway, so no
need to argue about stupid questions... :-)),
I'm re-wiring my RV-8 with a Z-13/20 system. Using the B&C battery
contactor, I will have to splice on approximately 1.5" of 2 guage cable
unless I install it upside down (or move it to another location, not
something I want to do...)
Question 1: What are the issues, if any of a contactor installed upside down
(I have read the stuff in the Connection about the aerobatic dude who killed
his starter allegedly from to many G's on the starter contactor... I kinda
doubt the G's I'll pull in my -8 will be comparable...)?
Question 2: If I simply reversed the diode and switched the wire from the
main contact to the other side, have I essentially "reversed" the contactor?
(not sure that made any sense. Look at the side of a B&C contactor and make
all the wires on it a mirror image...)
Thanks for any advice,
John
RV-8 N94DW
Message 18
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| Subject: | Re: Rotax 912 vr 965-347 |
Yes, you'll note the dynamo has a new pulley welded onto
it. Different builders are trying different pulley sizes to make the
dynamo generate sufficient power at idle while taxiing, or to keep
the beast under control in cruise flight. Unfortunately the downside
of using a generator instead of an alternator I guess. Total price
for dynamo and regulator is under 300 bucks, and results in very
light weight. The usual caveats apply: tell them you need it for
your TRACTOR, and don't use the "a" word.
Part numbers and other stuff:
http://home.hiwaay.net/~langford/corvair/dynamo.html
Dave Morris
At 01:38 PM 2/10/2007, you wrote:
><nuckollsr@cox.net>
>
>At 01:03 PM 2/10/2007 -0600, you wrote:
>
>>
>>The Corvair guys are using the John Deere dynamo and regulator
>>http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
>>http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg
>>
>>Dave Morris
>
> Thank you sir!
>
> Hmmm . . . interesting pulley ratios . . . wonder how much
> snort they get out of this thing a ramp idle and taxi speeds.
> Of course, the smaller pulley ratio reduces stress on the
> regulator at cruise. I suspect there's an opportunity for some
> system performance optimization here.
>
> Bob . . .
>
>
> ----------------------------------------
> ( IF one aspires to be "world class", )
> ( what ever you do must be exercised )
> ( EVERY day . . . )
> ( R. L. Nuckolls III )
> ----------------------------------------
>
>
Message 19
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|
| Subject: | Re: Another contactor question |
At 01:10 PM 2/10/2007 -0700, you wrote:
>OK, here's a stupid question (and I'm probably a stupid person anyway, so
>no need to argue about stupid questions... :-)),
>
>I'm re-wiring my RV-8 with a Z-13/20 system. Using the B&C battery
>contactor, I will have to splice on approximately 1.5" of 2 guage cable
>unless I install it upside down (or move it to another location, not
>something I want to do...)
>
>Question 1: What are the issues, if any of a contactor installed upside
>down (I have read the stuff in the Connection about the aerobatic dude who
>killed his starter allegedly from to many G's on the starter
>contactor... I kinda doubt the G's I'll pull in my -8 will be comparable...)?
>
>Question 2: If I simply reversed the diode and switched the wire from the
>main contact to the other side, have I essentially "reversed" the
>contactor? (not sure that made any sense. Look at the side of a B&C
>contactor and make all the wires on it a mirror image...)
See
http://tinyurl.com/2lrwz4
What you should have deduced from reading about g-loading
was that the whole idea is a myth. The 4-terminal contactors
sold by B&C are mirror image . . . you may reverse the fat
terminal functionality and/or small terminal functionality
at will . . . just make sure your diode polarity is correct
for what ever configuration you choose to use.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 20
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| Subject: | Re: Our Aeronautical Heritage |
OC-
As soon as I read that, I forwarded it to my Dad, one of those
Liberator men who flew with the 8th AAF's 453rd BG at Old Buck, was
wounded by flack, taken POW, escaped Germany and lived to tell the
tale. Now 82, Dad still hates flying, though he's been up with me 3
or 4 times in the RV, and can't bring himself to talk much about the
war. I never pass on an opportunity, though, to remind him of how
much his countrymen and family appreciate the incredible bravery and
sacrifice his generation made for the cause. I think it was Churchill
who remarked, "Dear God, where do we get such men as these?"
It is a good thought to ponder; an ironic question which begins with
its own answer.
-Bill Boyd
On 2/10/07, bakerocb@cox.net <bakerocb@cox.net> wrote:
>
> 2/10/2007
>
> Dear Fellow Listers, Please forgive the off topic posting.
>
> At dinner last night the subject of the scope of wars came up and I made a
> comment to a fellow diner about the scope of WW II, particularly the rate of
> ship and airplane construction, and mentioned a few numbers. She scoffed at
> those numbers as ridiculously high. So today I did a bit of research and
> came across:
>
> "The plant Ford built at Willow Run had an assembly line that was a mile
> long. At the peak of it's production, the assembly line was producing a
> Liberator an hour. Willow Run had its own airfield. It employed 30,000
> workers."
>
> I am sharing that with her, but I'd like to share the below with you:
>
> AN EIGHT-YEAR-OLD AT WILLOW RUN
>
> "I seldom got more than a few miles, usually on foot, away from our home on
> Strawberry lake. It was 1944 and no one travelled much due to the war. My
> brother Bob worked at Willow Run, just a name to me. I knew that they built
> the B-24 Liberator there. One day, I think a Sunday, my Brother took me to
> Willow Run. The workers were at home. Now that I am 69 years old I realize,
> in retrospect, the impact that magic place had on me. My brother said that
> it was the biggest factory in the world under one roof at that time. We
> started at the beginning of the assembly line; mountains of strange objects.
> Nuts, bolts, wheels, struts, wing spars, rib sections, things I had never
> seen before, tail sections, fuselage sections, wings. It seemed we would
> never get to the end but we did and there sat a finished B-24. The climax! I
> can still feel the awe of the workers who built such a marvel and the image
> in my mind of the heroes that would take that huge plane into harms way. I
> was embarrassed when I cried then from sheer emotion. "Big boys don't cry."
> I'm crying now as I write but there is no embarrassment. I Think that day
> might just have been the day that set me on a quest to become a fighter for
> my country. My heroes have never been movie stars. My heroes have always
> been, from 8 years old onward , the men like those who manned that B-24; the
> knights, the soldiers who made America the strongest nation in the world!"
>
> 6/5/2005 - T/Sgt. Gary R. Downing U.S.A.F. Retired.
>
> There is more on this subject on the below web site.
>
> http://www.liberatorcrew.com/06_B-24_Prod.htm
>
> OC -- The best investment we can make is to gather knowledge.
>
> PS: It took me decades to extract the mystery of the source of my
> aeronautical epiphany / obsession from my memory. I was moved by Gary R.
> Downing's description of his.
>
>
Message 21
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| Subject: | Re: Antenna in Wingtip |
You'll never tune an Archer wingtip antenna without connection to the
metal end rib of the wing; believe me, this fool has tried, also
thinking it was like a J-pole. It is not.
Ended up chasing the resonance of the mounting leg all over the place
until I had trimmed it all way too short and had to start over.
Bonding the base leg to the airframe tames the beast rather well.
Shadowing by the airframe WILL be an issue in an RV, though. I have
proved that much to myself.
-Bill B
On 2/10/07, Robert L. Nuckolls, III <nuckollsr@cox.net> wrote:
>
> At 10:31 PM 2/7/2007 -0600, you wrote:
>
> >
> >It doesn't use a ground plane. It's more like a modified J-pole I think.
> >
> >Dave Morris
>
> But a j-pole has two elements, on a 1/2 and the other 1/4 wavelength long
> . . . and wouldn't fit under a wing tip fairing.
>
> Bob . . .
>
>
Message 22
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| Subject: | Rotax 912 vr 965-347 |
Could it have been the Key West regulator?
Lockwood, Leading Edge, and others offer them.
You see them a lot on ultralights with 447/503/582's...
-----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, February 10, 2007 12:30 PM
Subject: Re: AeroElectric-List: Rotax 912 vr 965-347
<nuckollsr@cox.net>
At 12:15 PM 2/10/2007 -0600, you wrote:
><docyukon@ptcnet.net>
>
> Has anyone found an acceptable substatute, rectafier regulator,
> for the 912-914 rotax? Better? cheaper? Doc
There was a product offered some years ago that was popular with
the ultra-light crowd but I don't recall the name off hand. Anyone
else remember?
A modern, processor controlled regulator/rectifier for PM alternators is
on my list of things to do when the drive stand is up and runnning.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
Message 23
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| Subject: | Rotax 912 vr 965-347 |
At 04:04 PM 2/10/2007 -0600, you wrote:
>
>Could it have been the Key West regulator?
>
>Lockwood, Leading Edge, and others offer them.
>
>You see them a lot on ultralights with 447/503/582's...
Hmmm . . . those engines have those alternators
that want to grow up and be a 'real' alternators one
day.
I suspect the John Deere is the more robust of the
PM regulators. As soon as I can spin the hardware,
I'll find out how beefy it really is.
Bob . . .
Message 24
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No need to reply.
I'm not getting messages.
This is a test.
George Braly
Message 25
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Robert L. Nuckolls, III wrote:
> <nuckollsr@cox.net>
>
>
>>>
>>> I thought Matt had revised the filters to allow attachments.
>>> Was this reversed while I wasn't watching?
>>
>> I believe there is a limit on file size for attachments, and only
>> certain file extensions are allowed (bmp doc dwg dxf gif jpg pdf png
>> txt xls).
>
> Yeah. That rings a bell. I just stuck a small image on
> my test-post. I'll take advantage of that more often.
> I've not had much incentive to use this feature because
> of easy access to a server that supports my website.
> But I'll use the attachment method more with the intent
> of encouraging others to do likewise. Pictures are a VERY
> important component of accurate communication.
>
> Bob . . .
>
Just remember to have mercy on us poor souls stuck with dialup & size
the images below 100k.
Thanks,
Charlie
Message 26
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| Subject: | Re: Rotax Rectifier Wiring |
Bob
Thank you for your thorough review! That sends some light into my present Rotax-Rectifier/Regulator-darkness
:P
Martin
--------
Martin Pohl
Zodiac XL QBK
8645 Jona, Switzerland
www.pohltec.ch/ZodiacXL
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=94219#94219
Message 27
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5X5, George.
Rick Lindstrom
George Braly wrote:
>
>
> No need to reply.
>
> I'm not getting messages.
>
> This is a test.
>
> George Braly
>
>
>
>
>
>
>
Message 28
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-----Original Message-----
From: "Charlie England" <ceengland@bellsouth.net>
Sent: 2/10/07 5:01 PM
Subject: Re: AeroElectric-List: Sorry!!
Robert L. Nuckolls, III wrote:
> <nuckollsr@cox.net>
>
>
>>>
>>> I thought Matt had revised the filters to allow attachments.
>>> Was this reversed while I wasn't watching?
>>
>> I believe there is a limit on file size for attachments, and only
>> certain file extensions are allowed (bmp doc dwg dxf gif jpg pdf png
>> txt xls).
>
> Yeah. That rings a bell. I just stuck a small image on
> my test-post. I'll take advantage of that more often.
> I've not had much incentive to use this feature because
> of easy access to a server that supports my website.
> But I'll use the attachment method more with the intent
> of encouraging others to do likewise. Pictures are a VERY
> important component of accurate communication.
>
> Bob . . .
>
Just remember to have mercy on us poor souls stuck with dialup & size
Message 29
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| Subject: | Attaching Shield to "Lo"/Ground Wire at Intercom |
The installation instructions for my PS Engineering PM1000II intercom
show all shields for the mics and phones grounded to their corresponding
"Lo" wires. I've looked at Bob's comic books and searched the
collection of FAQs and couldn't find a way to do it. The wires will be
crimped onto D-SUB pins so there is only room for one wire.
(For intercom installation wiring diagram, see
http://www.ps-engineering.com/docs/pm1000wiring_data.shtml<http://www.ps-
engineering.com/docs/pm1000wiring_data.shtml>)
Can I "daisy chain" the shields as Bob shows in his "Shield Termination
Techniques" comic book and ground them all to Ground Pin 1 (which goes
to the "forest-of-tabs" ground block) rather than at each individual
"Lo" wire pin?
Or should each shield be individually grounded to its corresponding "Lo"
wire? It seems I could create an uninsulated length (~0.3 in) before
the end of the "Lo" wire and lightly solder the shield directly to the
"Lo" wire, cover it with heatshrink and then crimp my D-Sub pin to the
end of the "Lo" wire and insert it into the connector.
Bob
GlaStar
Message 30
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| Subject: | Re: Antenna in Wingtip |
I suspect you have a Bob Archer antenna made for a metal plane like an RV. Most
Nav antennas in glass planes need to be placed in the belly or upper fuselage
due to space requirements.
--------
Milt
N395V
F1 Rocket
www.excaliburaviation.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=94252#94252
Message 31
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| Subject: | Re: Attaching Shield to "Lo"/Ground Wire at Intercom |
I took a solder-cup D-Sub female connector and soldered all the connectors
together and soldered one wire which went to the common pin on the intercom.
Then I put pins on all the shields and "Lo" wires and put them in a male
connector. At one time Bob had an article that showed this, but I couldn't
find it either.
Dennis Glaeser
RV7A
----------------------------------------------------------------------------
---------------------
The installation instructions for my PS Engineering PM1000II intercom
show all shields for the mics and phones grounded to their corresponding
"Lo" wires. I've looked at Bob's comic books and searched the
collection of FAQs and couldn't find a way to do it. The wires will be
crimped onto D-SUB pins so there is only room for one wire.
Message 32
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| Subject: | In recognition of our teachers . . . |
I had an interesting experience last week. I've been working
a noise problem that's preventing us from delivering
a lot of aircraft to their original purchase specification.
They're going out with some accessories tagged as "inop"
until we can develop, field and install kits. However,
this is NOT the way to win friends and influence customers
in favorable ways. Nor does it impress our managers and
stockholders.
I've been a customer of Captor Corporation for over 30 years.
I made my first phone call to them about 1975 while in the
employ of Electro-Mech . . . my first production engineering
job. The guy who answered the phone back then was Bob Jenks.
Bob and I have talked many times over the years but it's
been about ten years since our last conversation. When this
extra-ordinarily intransigent noise situation arose, the
first resource I thought of was Captor and Bob Jenks.
While visiting their facility I got to meet Bob face to face
for the first time. He's 71, semi-retired and working 3 days
a week mostly for fun. In the few hours I was able to spend
with him, I got a data and process dump on filter techniques
that bestowed upon me a quantum jump in personal understanding
and competence.
Many folk in Bob's position hold things pretty close
to the chest. Perhaps they're not interested in teaching
or perhaps they're wrapped up in that universal wet-blanket
known as the "proprietary information" mantra.
Not so in this case. As I drove away from Captor to catch
an airplane I could not help but note of a sense of exhilaration
for what I had just received. It's been a long time since
I last walked out of anyone's "classroom" feeling like that.
Giggled damned near all the way to the airport! Better yet,
I have some new and interesting things to try in the lab on
Monday . . . and to pass along to my compatriots who work
there with me.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
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