Today's Message Index:
----------------------
1. 11:22 AM - Electrical Problem (Joseph Czachorowski)
2. 02:13 PM - Re: Electrical Problem (Dennis & Anne Glaeser)
3. 05:14 PM - Electrical stuff for sale. (DEAN PSIROPOULOS)
4. 05:29 PM - Re: Re: self weighing our planes (David M.)
5. 06:48 PM - Re: Electrical Problem (Ralph Finch)
Message 1
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| Subject: | Electrical Problem |
Guys,
I have a 2007 C-182T Skylane. After about 240 hours on the bird I got
an electrical problem. The Skylane has a G1000 in it. After starting
the plane and sitting on the ground at idle (approx 1000 RPM) the "M
BAT" starts to show a discharge after awhile (approx -1.5 amps). The
volts are good at 28 volts (the plane has a 24 volt bat). I can turn
the ALT off and the M BAT shows a bigger discharge (as it should). As
soon as I put the ALT back on line, the M BAT shows a positive charge
followed by a discharge to -1.5 amps. Volts are a steady 28 with the
ALT on. I don't think it's a ALT problem.
I changed the Gill bat hoping it was a battery problem. Nope. Same
problem exists with the new bat installed. I'm thinking the next thing
to check would be the shunts (there are 2...one for the STBY BAT and one
for the M BAT). Anyone have any other ideas?
Joe
Message 2
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| Subject: | Re: Electrical Problem |
Joe,
I instruct in C172s with G1000s and that happens on a regular basis. I
don't think it's really a problem, it basically means the battery is fully
charged and at low RPMs it's actually supplying a few electrons more than
the alternator. As long as it goes away as soon as the RPMs come up, I
don't consider it an issue. Hopefully Bob will confirm.
Dennis Glaeser
Message 3
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| Subject: | Electrical stuff for sale. |
I still have a few things leftover from the completion of my RV-6A project.
All electrical parts are new in the package (if they came in a package).
See below and contact me off list if there is anything you need:
Dean Psiropoulos
N197DM
Tarpon Sprgs, FL
1) Rocky Mountain Instrument - Micro Encoder (Unassembled Kit), fits std 3
1/8 inch instrument hole, displays airspeed, altitude, VSI, OAT, Altitude
alerting, misc warnings. Half the price of new at $450.00
2) Wingtip/Windscreen antenna kit - originally sold through Van's $10.00
3) Control Cables, Black Knob Friction Lock (for throttle control) $30 each
a) ACS Products, A800BL0445-V, 44.5 inches long (RV-6 with
carburetor)
b) ACS Products, A800BL0505-V, 50.5 inches long (RV, FWD facing
sump)
4) Control Cables, Black Knob with bare wire ends (used for carb/cabin heat
control) $15.00 each
a) ACS Products, A740BL0720, 6 feet long (Black Knob no button)
b) ACS Products, A740BL0720, 6 feet long (Black Knob no button)
5) Cable Safe, bulkhead penetration/mount for control cable, (for 1/4 in OD
cable). Fits control cables in (4) above $5.00
6) Gooseneck Chart Light with separate Dimmer control (B&C GCL) $50.00
7) Ray Allen Rocker Switch (4 wire, for electric trim servo control)$15.00
8) Ray Allen LED bar graph indicator (shows trim servo position). $60.00
9) Lighted Rocker Switch, Amber lens Carling Brand SPST, 1 piece (.55 x
1.125 hole) $2.50
10) Lighted Rocker Switch, red LED, SPST, 1 piece (.512 x .752 hole) $2.50
11) 2 Large Terminal blocks, (10 connections), #8 screws, $5.00 each
12) 1 Large Terminal block, (16 connections), #8 screws, $5.00
13) Flexible fuel line, std 3/8 inch with firesleeve, 15 inches long (Van's
part VA-129) $30.00 (never installed)
14) Wood prop install kit for 0-360 engine:
a) Aluminum machined spacer, 2 1/4 inch, $200.00
b) Aluminum crush plate and AN steel bolts $140.00
15) Wood prop for 0-360, 70x82, Ed Sterba, mfg 2006, 6 hours TT $450.00
16) Van's fiberglass spinner, fits 70x82 Sterba wood prop, painted metallic
silver $100.00
Message 4
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| Subject: | Re: RE: self weighing our planes |
No problem. I understood and thanks for the info.
And thanks everyone for the help! This is great stuff.
David
BobsV35B@aol.com wrote:
> Good Evening David,
>
> Sorry if you got the impression that I was suggesting using my
> procedure as a means of checking the weight of your aircraft prior to
> a takeoff!
>
> My comment was in response to a note which said that the Airbus
> supplied a weight figure following takeoff. The submitter seemed to
> wonder how that could be done, I was just mentioning one way such a
> determination could be made.
>
> As to what to do if I found find nine degrees wasn't going to get me
> airborne, that really depends on how much runway is left and how bad
> the crash will be if I abort.
>
> Fortunately for me, I was flying a four engine airplane and our
> performance numbers were based on having three running and the most
> critical engine failed at the most inopportune time. That meant that
> if all four were still running, we had some wiggle room if the
> aircraft was over the weight shown on the weight manifest.
>
> It was my experience with some very poor data being provided on
> charter trips that got me to develop my little checking procedure and,
> as I could verify sloppy work by those who provided the data, I could
> take steps to get the quality of the data improved.
>
> I do not recommend ever operating intentionally at any loading not
> approved for the airplane, but there are simple methods that we can
> use to help keep everyone honest and on their toes.
>
> Happy Skies,
>
> Old Bob
>
> <<<snip>>>
Message 5
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| Subject: | Electrical Problem |
Also, I find the Gill batteries-at least their non-flooded batteries-really
inferior to Concord and probably other brands. I gave up on Gills, the
Concord battery I use is working well past the life of a Gill.
Ralph
Davis, CA
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Joseph
Czachorowski
Sent: Sunday, July 05, 2009 11:16 AM
Subject: AeroElectric-List: Electrical Problem
Guys,
I have a 2007 C-182T Skylane. After about 240 hours on the bird I got an
electrical problem. The Skylane has a G1000 in it. After starting the
plane and sitting on the ground at idle (approx 1000 RPM) the "M BAT" starts
to show a discharge after awhile (approx -1.5 amps). The volts are good at
28 volts (the plane has a 24 volt bat). I can turn the ALT off and the M
BAT shows a bigger discharge (as it should). As soon as I put the ALT back
on line, the M BAT shows a positive charge followed by a discharge to -1.5
amps. Volts are a steady 28 with the ALT on. I don't think it's a ALT
problem.
I changed the Gill bat hoping it was a battery problem. Nope. Same
problem exists with the new bat installed. I'm thinking the next thing to
check would be the shunts (there are 2...one for the STBY BAT and one for
the M BAT). Anyone have any other ideas?
Joe
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