Today's Message Index:
----------------------
1. 06:00 AM - Re: Alternator Putting out MAX Current (ChangDriver)
2. 10:45 AM - Hi Voltage Lead Tester (Mozam)
3. 04:21 PM - Re: Re: Alternator Putting out MAX Current (Bitterlich, Mark G CIV NAVAIR, WD)
4. 04:25 PM - FW: M9F Coil (Bitterlich, Mark G CIV NAVAIR, WD)
5. 04:55 PM - Re: Re: Alternator Putting out MAX Current (Patrick Ashura)
6. 06:16 PM - Re: Re: Alternator Putting out MAX Current (dabear)
7. 07:16 PM - Re: FW: M9F Coil (Roger Kemp M.D.)
8. 09:04 PM - A-10 Divestment - need help! (Todd McCutchan)
Message 1
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| Subject: | Re: Alternator Putting out MAX Current |
Mark:
Thanks for the last advice. I got thrown off by the batteries being new and the
terminal voltages being 12.1 on each battery and the system showing 24.2 volts.
If we had electric starters in out planes we would notice this immediately
as the current demand on the batteries would exceed what they could do if depleted.
The regulator was doing its job the entire time by holding bus voltage
at 28.8 (the B&C set point for a 24 v regulator).
I did not have a charger so I opted to allow the alternator to do the job. When
I saw 35 amps out at t/o rpm, I had visions of heat in the B lead and heat
in the alternator. So, the option of running at a lower amperage for a period
of time to charge the batteries was my only option. Thus allowing the alternator
to put out less than rated power for the test/charging flight.
A battery minder might not be a bad idea it I don't fly often.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=407913#407913
Message 2
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| Subject: | Hi Voltage Lead Tester |
I have at least two bad leads on one of my mags and wanted to test them with a
hi voltage lead tester I borrowed. I just installed these leads with a new auto
plug conversion kit and suspect they have a poor connection at the mag cap.
One of these bad leads is to the spark plug with the CHT temp sensor, which shows
the cylinder is VERY cold when running on just that plug. This was verified
with a temperature gun. The spark plug is brand new.
I hooked up the tester according to the instructions and it shows both suspect
leads are good. I was puzzled by that and so I disconnected the tester from the
plug lead, held the test connector in the air, and pushed the test button on
the tester. It buzzes and sparks showing a good lead. ???
Is this normal? It doesn't give me confidence that the tester is working properly.
Also, just out of curiosity, could one of you electrical wizards explain how this
lead tester works...in words a math major can understand. :-)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=407930#407930
Message 3
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| Subject: | Re: Alternator Putting out MAX Current |
Roger that. I am sure someone around has a 12 volt charger, so just FYI what you
could have done was to charge one 12 volt battery at a time. There is a lot
to talk about here, a few things more to consider.
1. I am assuming you are using GEL CELL batteries. If that is true, typically
these batteries have a maximum charge current listed on their specifications.
Those will be exceeded when throwing them into the airplane and going flying.
Hard to say what can happen here specifically, but plate warping, gassing, are
in the list of things that might happen. All resulting in reduced battery
life.
2. A lot of small aircraft alternators are not really designed for continuous
current at maximum ratings. I.E. an SK-35 alternator and regulator could get
pretty darn hot running that kind of output over the long term. Failure of alternator
and/or regular HAS happened to some owners. Realize you're dealing with
about 1000 watts of energy here. Lots of heat in a kilowatt.
3. Some 12 volt chargers have selectable charging currents... those are the ones
you want to use for your batteries. They will sometimes actually allow you
to select the type of battery you are charging. If there is no other choice,
turn off EVERYTHING you can to reduce current draw while the batteries are charging
like this. And cross your fingers.
4. You might want to check the maximum charging voltage for your batteries, and
possibly crank the B&C output down to match that recommendation. Not the end
of the world if you do not, but a charging voltage over the maximum listed will
reduce the lifetime of the batteries by causing them to gas.
Bear, are you reading this? If so, tell the world your story! :-)
Yes indeedy. The Battery Minder:
http://www.batterystuff.com/battery-chargers/24-volt/aircraft/BM24041AA-S2.html
Works like gangbusters! It will extend the life of your battery .... and has to
be the best darn battery charger I have ever purchased in my life. Not really
a battery "charger" per se, actually just like it says, a "maintainer". Not
cheap... but an extremely wise purchase and worth every cent. Realize I very
rarely endorse a specific product. This is an exception.
Mark
________________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of ChangDriver [capav8r@gmail.com]
Sent: Monday, September 02, 2013 8:57 AM
Subject: Yak-List: Re: Alternator Putting out MAX Current
Mark:
Thanks for the last advice. I got thrown off by the batteries being new and the
terminal voltages being 12.1 on each battery and the system showing 24.2 volts.
If we had electric starters in out planes we would notice this immediately
as the current demand on the batteries would exceed what they could do if depleted.
The regulator was doing its job the entire time by holding bus voltage
at 28.8 (the B&C set point for a 24 v regulator).
I did not have a charger so I opted to allow the alternator to do the job. When
I saw 35 amps out at t/o rpm, I had visions of heat in the B lead and heat
in the alternator. So, the option of running at a lower amperage for a period
of time to charge the batteries was my only option. Thus allowing the alternator
to put out less than rated power for the test/charging flight.
A battery minder might not be a bad idea it I don't fly often.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=407913#407913
Message 4
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Sergei needs a coil... can anyone help?
reply to s_boriak@yahoo.com
> From: Sergei Boriak [s_boriak@yahoo.com]
> Sent: Sunday, September 01, 2013 11:05 AM
> To: Bitterlich, Mark G CIV NAVAIR, WD; Mark Bitterlick WA3JPY; Mark Bitterlick
WA3JPY
> Subject: M9F Coil
>
> Hi Mark,
>
> I am looking for Magneto coil for M9F.
>
> Cheers
>
> Sergei
Message 5
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| Subject: | Re: Alternator Putting out MAX Current |
Mark- do you recommend a specific battery for the Yak?
PJ Ashura
Sent from my iPhone
On Sep 2, 2013, at 19:17, "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
wrote:
>
> Roger that. I am sure someone around has a 12 volt charger, so just FYI what
you could have done was to charge one 12 volt battery at a time. There is a
lot to talk about here, a few things more to consider.
>
> 1. I am assuming you are using GEL CELL batteries. If that is true, typically
these batteries have a maximum charge current listed on their specifications.
Those will be exceeded when throwing them into the airplane and going flying.
Hard to say what can happen here specifically, but plate warping, gassing,
are in the list of things that might happen. All resulting in reduced battery
life.
>
> 2. A lot of small aircraft alternators are not really designed for continuous
current at maximum ratings. I.E. an SK-35 alternator and regulator could get
pretty darn hot running that kind of output over the long term. Failure of
alternator and/or regular HAS happened to some owners. Realize you're dealing
with about 1000 watts of energy here. Lots of heat in a kilowatt.
>
> 3. Some 12 volt chargers have selectable charging currents... those are the
ones you want to use for your batteries. They will sometimes actually allow you
to select the type of battery you are charging. If there is no other choice,
turn off EVERYTHING you can to reduce current draw while the batteries are
charging like this. And cross your fingers.
>
> 4. You might want to check the maximum charging voltage for your batteries,
and possibly crank the B&C output down to match that recommendation. Not the
end of the world if you do not, but a charging voltage over the maximum listed
will reduce the lifetime of the batteries by causing them to gas.
>
> Bear, are you reading this? If so, tell the world your story! :-)
>
> Yes indeedy. The Battery Minder:
>
> http://www.batterystuff.com/battery-chargers/24-volt/aircraft/BM24041AA-S2.html
>
> Works like gangbusters! It will extend the life of your battery .... and has
to be the best darn battery charger I have ever purchased in my life. Not really
a battery "charger" per se, actually just like it says, a "maintainer".
Not cheap... but an extremely wise purchase and worth every cent. Realize I very
rarely endorse a specific product. This is an exception.
>
> Mark
>
> ________________________________________
> From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of ChangDriver [capav8r@gmail.com]
> Sent: Monday, September 02, 2013 8:57 AM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Alternator Putting out MAX Current
>
>
> Mark:
>
> Thanks for the last advice. I got thrown off by the batteries being new and
the terminal voltages being 12.1 on each battery and the system showing 24.2 volts.
If we had electric starters in out planes we would notice this immediately
as the current demand on the batteries would exceed what they could do if
depleted. The regulator was doing its job the entire time by holding bus voltage
at 28.8 (the B&C set point for a 24 v regulator).
>
> I did not have a charger so I opted to allow the alternator to do the job. When
I saw 35 amps out at t/o rpm, I had visions of heat in the B lead and heat
in the alternator. So, the option of running at a lower amperage for a period
of time to charge the batteries was my only option. Thus allowing the alternator
to put out less than rated power for the test/charging flight.
>
> A battery minder might not be a bad idea it I don't fly often.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=407913#407913
>
>
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: Alternator Putting out MAX Current |
Mark, Which story? I have so many.
However, I do recommend the gel cell and the approved/recommended charger
"battery Minder"
Bear
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV NAVAIR, WD
Sent: Monday, September 02, 2013 7:17 PM
Subject: RE: Yak-List: Re: Alternator Putting out MAX Current
--> <mark.bitterlich@navy.mil>
Roger that. I am sure someone around has a 12 volt charger, so just FYI
what you could have done was to charge one 12 volt battery at a time. There
is a lot to talk about here, a few things more to consider.
1. I am assuming you are using GEL CELL batteries. If that is true,
typically these batteries have a maximum charge current listed on their
specifications. Those will be exceeded when throwing them into the airplane
and going flying. Hard to say what can happen here specifically, but plate
warping, gassing, are in the list of things that might happen. All
resulting in reduced battery life.
2. A lot of small aircraft alternators are not really designed for
continuous current at maximum ratings. I.E. an SK-35 alternator and
regulator could get pretty darn hot running that kind of output over the
long term. Failure of alternator and/or regular HAS happened to some
owners. Realize you're dealing with about 1000 watts of energy here. Lots
of heat in a kilowatt.
3. Some 12 volt chargers have selectable charging currents... those are the
ones you want to use for your batteries. They will sometimes actually allow
you to select the type of battery you are charging. If there is no other
choice, turn off EVERYTHING you can to reduce current draw while the
batteries are charging like this. And cross your fingers.
4. You might want to check the maximum charging voltage for your batteries,
and possibly crank the B&C output down to match that recommendation. Not
the end of the world if you do not, but a charging voltage over the maximum
listed will reduce the lifetime of the batteries by causing them to gas.
Bear, are you reading this? If so, tell the world your story! :-)
Yes indeedy. The Battery Minder:
http://www.batterystuff.com/battery-chargers/24-volt/aircraft/BM24041AA-S2.h
tml
Works like gangbusters! It will extend the life of your battery .... and
has to be the best darn battery charger I have ever purchased in my life.
Not really a battery "charger" per se, actually just like it says, a
"maintainer". Not cheap... but an extremely wise purchase and worth every
cent. Realize I very rarely endorse a specific product. This is an
exception.
Mark
________________________________________
From: owner-yak-list-server@matronics.com
[owner-yak-list-server@matronics.com] on behalf of ChangDriver
[capav8r@gmail.com]
Sent: Monday, September 02, 2013 8:57 AM
Subject: Yak-List: Re: Alternator Putting out MAX Current
Mark:
Thanks for the last advice. I got thrown off by the batteries being new and
the terminal voltages being 12.1 on each battery and the system showing 24.2
volts. If we had electric starters in out planes we would notice this
immediately as the current demand on the batteries would exceed what they
could do if depleted. The regulator was doing its job the entire time by
holding bus voltage at 28.8 (the B&C set point for a 24 v regulator).
I did not have a charger so I opted to allow the alternator to do the job.
When I saw 35 amps out at t/o rpm, I had visions of heat in the B lead and
heat in the alternator. So, the option of running at a lower amperage for a
period of time to charge the batteries was my only option. Thus allowing
the alternator to put out less than rated power for the test/charging
flight.
A battery minder might not be a bad idea it I don't fly often.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=407913#407913
Message 7
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| Subject: | Re: FW: M9F Coil |
Doug Sapp had some the last time I needed one.
Doc
Sent from my iPad
On Sep 2, 2013, at 6:22 PM, "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
wrote:
>
>
> Sergei needs a coil... can anyone help?
>
> reply to s_boriak@yahoo.com
>
>
>> From: Sergei Boriak [s_boriak@yahoo.com]
>> Sent: Sunday, September 01, 2013 11:05 AM
>> To: Bitterlich, Mark G CIV NAVAIR, WD; Mark Bitterlick WA3JPY; Mark Bitterlick
WA3JPY
>> Subject: M9F Coil
>>
>> Hi Mark,
>>
>> I am looking for Magneto coil for M9F.
>>
>> Cheers
>>
>> Sergei
>
>
>
>
Message 8
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| Subject: | A-10 Divestment - need help! |
FYI below.
McGruff is the Weapons Officer at Davis-Monthan.
Help save the hog and save a life.
Todd McCutchan
T-34A - N134FA
KDVT Hangar 42-06
Cell (260) 402-1740
E-mail todd@fastaircraft.com
www.fastaircraft.com
Begin forwarded message:
> From: McGruff Home <mcgruffhunt@gmail.com>
> Date: September 2, 2013, 8:38:46 PM MST
> To: Chat@t-34.com
> Subject: [T-34 Chat] A-10 Divestment - need T-34 help!
>
> All T-34 drivers, I need your help. Back channel sources have confirmed t
he USAF is going all in to divest the close air support mission. They plan o
n killing the A-10 and the KC-10 tanker (separate bizarre issue). Divestment
will occur in next 20 months. Congress is saying it isn't true because the
signed POM hasn't been presented yet.
>
> We desperately need the warbird guys to pitch in. Forward to Red Star, T-
28 etc. call your congressmen and ask what the life of a ground pounder is w
orth. Demand answers. There are a variety of reasons why the F-35 cannot a
nd will not do the CAS mission. Do not believe the hype.
>
> See below. 104.1 the Truth is broadcasting a live interview with a legend
ary A-10 driver from 5 to 6 PM tomorrow. Pacific time. You can listen live
.
>
> If you believe in the mission of the A-10 please make noise. This is not h
ype, it is the real deal.
>
> Thank you
>
>
>
> J.D. "McGruff" Hunt
> Sent from my iPhone
>
>> Subject: Muck on 104.1 James T. Harris Show Tuesday, 3 Sep just after 170
0 Tucson time (20L East coast)
>>
>> Dear Tucson Hog/CAS alumni, I=99m going to be on James T. Harris
=99s 104.1 talk show tomorrow, Tuesday, 3 Sep just after 1700 Tucson time
, until approx 1729. As most of you know, the topic is current events surro
unding the A-10 and apparent ACC efforts to retire all the Hogs by end of 20
15. An article which will heavily quote me will also appear in the Arizona D
aily Independent tomorrow (think that one=99s online only??), written b
y Ms. Lori Hunnicutt.
>>
>> Would appreciate as many of you all listening in, and passing the word to
listen in, as possible. I won=99t have any magic dust, just trying t
o speak to protecting capability that, if it goes away prematurely, will cos
t our soldiers, SOF, and Marine brethren dearly. I=99m sure F-35
=99s going to possess some impressive capabilities once they solve all the c
ost/schedule/performance issues. However, I=99m very convinced it won
=99t be able to handle danger-close TIC with mobile, small targets, as
well as large armored pushes where wpns capacity and point-shoot capability
under the weather will still be at a premium.
>>
>> Appreciate any feedback y=99all can provide afterwards. My short v
ersion: my intel and my sense after having seen this movie 3 times previous
ly, is that ACC & HAF have cast their lot, and fully intend to pursue comple
te divestiture in next 2 yrs. My goal is to get this drama beyond a local
=9Csave DM story and get it before the national media in order to force h
earings/study/freeze on retirement plans.
>>
>> Muck
>>
>> Robert =9CMuck=9D Brown
>> Mobile: 828-734-3220
>> mucka10@bellsouth.net
>> Skype: robert.h.brown3
>>
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