Today's Message Index:
----------------------
1. 09:31 AM - Collins Radio Request (J. Mcculley)
2. 04:28 PM - capacitors? (gary.stiffler@kroger.com)
3. 05:54 PM - Re: capacitors? (Deems Herring)
4. 05:54 PM - Re: Insrument Lighting (Eric M. Jones)
5. 07:08 PM - Re: capacitors? (FLYaDIVE@aol.com)
6. 07:23 PM - Re: Instrument Lighting (Jerry & Ledy Esquenazi)
Message 1
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Subject: | Collins Radio Request |
--> AeroElectric-List message posted by: "J. Mcculley" <mcculleyja@starpower.net>
I have a friend seeking to find a source for a Collins 350A Nav unit.
Any help will be very appreciated.
Jim McCulley
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Message 2
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Hi:
I have a 1974 Grumman AA1B. Mounted on the firewall are two cylinders
about one inch in diameter, one is about an inch in length with a =BC 20
post on either end and the alternator charging circuit passes through
it.
One of the posts is cross threaded and moves inside of the cylinder. The
other is electrically between the solid state regulator and the
alternator. It had a ground wire which looks like 16 gauge that is no
longer attached running in to the bakelite on one end of the cylinder.
Does anyone know what these devices are and where I can get
replacements?
Gary
N952GS
Message 3
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I have a 1776 AA1B, it sounds to me like you are talking about the starter
and battery relays. Check here: http://www.fletchair.com/ check page 12 of
there pdf catalog for a picture. I recommend Fletchair for all things Grumm
an you can reach them at 1 800 FA-WINGS.
Deems Herring
AA1B N1491R
9 Jul 2006 19:19:10 -0400Subject: AeroElectric-List: capacitors?
Hi:
I have a 1974 Grumman AA1B. Mounted on the firewall are two cylinders about
one inch in diameter,
_________________________________________________________________
Express yourself: design your homepage the way you want it with Live.com.
http://www.live.com/getstarted
Message 4
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Subject: | Re: Insrument Lighting |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
An instrument with internal tungsten lamps should be easy to convert to LEDs. This
has many benefits, and the LEDs are available in exact replacement sizes.
(Ledtronics and others places).
I sell the "Extremely General Purpose Adjustable Voltage Regulator" that is used
for dimming purposes and is smaller and lighter than anything you could build
from a kit. For $99 for four of them, it's hard to beat the price. too. Share
them with a fellow builder.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=45967#45967
Attachments:
http://forums.matronics.com//files/egpavr_161.pdf
Message 5
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--> AeroElectric-List message posted by: FLYaDIVE@aol.com
In a message dated 7/9/06 7:30:44 PM Eastern Daylight Time,
gary.stiffler@kroger.com writes:
> Hi:
>
>
>
> I have a 1974 Grumman AA1B. Mounted on the firewall are two cylinders
> about one inch in diameter, one is about an inch in length with a 20
> post on either end and the alternator charging circuit passes through it.
> One of the posts is cross threaded and moves inside of the cylinder. The
> other is electrically between the solid state regulator and the
> alternator. It had a ground wire which looks like 16 gauge that is no
> longer attached running in to the bakelite on one end of the cylinder.
> Does anyone know what these devices are and where I can get replacements?
>
>
>
> Gary
>
> N952GS
===========================
Gary:
As you have guess and from your description they are FEED-THROUGH Capacitors.
Their value is probably in the range of .001 to .01 uF at 20 VDC (WVDC) or
more. The voltage should be MORE than the system voltage by 50% and if you
find one at 100 VDC (WVDC) you can use that also ... Not critical.
I'm not understanding your description about the other item. That sounds
like an Electrolytic capacitor (Polarized ... + & - leads) that is hooked between
the 'S' terminal of the ACU and Ground. It's purpose is to filter out NOISE
& Spikes. The value of that can be anywhere from say 25,000 uF to 200,000 uF
and of course the voltage rating should be as described above.
Hope this helps.
Hey Got pictures?
Barry
"Chop'd Liver"
Message 6
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Subject: | Re: Instrument Lighting |
Hello Guys,
At the suggestion of another lister I googled the LM317K. It took
about $6 for the components and hour worth of work. I didn't even have
to go to Radio Shack; I have an excellent electronics supply store 5
minutes from the house. Not bad for a town of only 45,000! Anyway the
regulator works like a champ. The reason I needed this is because my
g-meter light was a lot brighter than the rest of the instruments. It
has a 3 lamps built into the instrument unlike the other instruments
that have a simple light tray. A simple resistor in series was getting
too hot.
Since my main control for my lights is the LC40 4 ch dimmer, I did
away with the pot in the LM317K circuit and replaced it with a fixed
resistor of appropriate size. The g-meter lighting is powered by the
LM317K circuit which in turn is wired to the rest of my instrument
lighting circuit via the LC40.
Try it. It is easy, cheap, and effective.
Jerry
Hey Guys ...
Are you really willing to spend $75 for a simple dimmer? As I stated
before,
as much as I dislike Radio Shack you can build this dimmer for $15 to
$20
with all parts and instructions available from the $hit Shack.
LQQK for the LM-317
Barry
"Chop'd Liver"
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