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Thread: Electrical Gremlins

  1. #1
    Guest
    Guest

    Electrical Gremlins

    Flying my Super III this morning when amp meter started showing
    discharge of about 10-14amps (40 is max on gauge). Started to lose
    radios & other electric stuff. Turned off all non essential radios &
    lights. Put 296gps on bat power. After landing plane sat about 4hours.
    Battery was week but it started & imediatly showed a good 14amp charge.
    During 1hr 45min flight the gauge went to just right of 0. All
    electrical equipment worked without fail. It was very cold today. About
    14o F when I left & only reached a high of 31-33o F. 45o F in the
    hanger when I pulled it out. Only thing different than normal is that I
    pulled the prop through 4 times prior to starting this morning. Could
    this or cold weather have had something to do with this. Or could the
    belt be loose. Plan to have my mech check it tomarrow, but would like
    suggestions. Can't think an altinator would quit then come back to life?

    Shannon Evans
    N5650S



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  2. #2
    Guest
    Guest

    Electrical Gremlins

    I had basically the same problem on a cross country from Georgia to Texas in my 72 sundowner. In my case it was the alternator. I had it replaced with a new one in Jackson, MS and rented a car for the trip. That fixed the problem. The main difference was that mine showed discharging of 40 when it went out, but it did come back and start charging.

    a1_sonse <a1_sonse@yahoo.com> wrote: Flying my Super III this morning when amp meter started showing
    discharge of about 10-14amps (40 is max on gauge). Started to lose
    radios & other electric stuff. Turned off all non essential radios &
    lights. Put 296gps on bat power. After landing plane sat about 4hours.
    Battery was week but it started & imediatly showed a good 14amp charge.
    During 1hr 45min flight the gauge went to just right of 0. All
    electrical equipment worked without fail. It was very cold today. About
    14o F when I left & only reached a high of 31-33o F. 45o F in the
    hanger when I pulled it out. Only thing different than normal is that I
    pulled the prop through 4 times prior to starting this morning. Could
    this or cold weather have had something to do with this. Or could the
    belt be loose. Plan to have my mech check it tomarrow, but would like
    suggestions. Can't think an altinator would quit then come back to life?

    Shannon Evans
    N5650S






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  3. #3

    Electrical Gremlins

    On my sport their is a thermal breaker that protects the alt field. It is a small 3 amp breaker. Sometimes in the winter when it is really been cold out and I am running everything interior lights, all of the radios and landings lights I pull to many amps and then the thermal field amp blows . When this goes down I start discharging. I shut the alternator switch off and let the breaker cool and rest Once it cools and I reset the alternator everything comes back to life. May have been the same problem you encountered.
    ----- Original Message -----
    From: Robin Ashe
    To: a1_sonse ; musketeermail@yahoogroups.com
    Sent: Tuesday, January 01, 2008 9:47 PM
    Subject: Re: [musketeermail] Electrical Gremlins


    I had basically the same problem on a cross country from Georgia to Texas in my 72 sundowner. In my case it was the alternator. I had it replaced with a new one in Jackson, MS and rented a car for the trip. That fixed the problem. The main difference was that mine showed discharging of 40 when it went out, but it did come back and start charging.

    a1_sonse <a1_sonse@yahoo.com> wrote: Flying my Super III this morning when amp meter started showing
    discharge of about 10-14amps (40 is max on gauge). Started to lose
    radios & other electric stuff. Turned off all non essential radios &
    lights. Put 296gps on bat power. After landing plane sat about 4hours.
    Battery was week but it started & imediatly showed a good 14amp charge.
    During 1hr 45min flight the gauge went to just right of 0. All
    electrical equipment worked without fail. It was very cold today. About
    14o F when I left & only reached a high of 31-33o F. 45o F in the
    hanger when I pulled it out. Only thing different than normal is that I
    pulled the prop through 4 times prior to starting this morning. Could
    this or cold weather have had something to do with this. Or could the
    belt be loose. Plan to have my mech check it tomarrow, but would like
    suggestions. Can't think an altinator would quit then come back to life?

    Shannon Evans
    N5650S

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  4. #4

    Electrical Gremlins

    It sounds like only one of the diodes in the alternator has failed. This
    allows the alternator to produce about half its capacity. I have had
    several alternators do this too me over the years. Installing a voltmeter,
    or getting one that plugs into the cigar lighter would give you better
    troubleshooting information than just the amp meter.




    1a.




    <http://groups.yahoo.com/group/musket...c=X3oDMTJyaGt1
    OGUyBF9TAzk3MzU5NzE1BGdycElkAzEwNzMzNjMEZ3Jwc3BJZA MxNzA1MDY1NjE4BG1zZ0lkAzMx
    NzY1BHNlYwNkbXNnBHNsawN2bXNnBHN0aW1lAzExOTkyNjY1MT E-> Electrical Gremlins


    Posted by: "a1_sonse" <mailto:a1_sonse@yahoo.com?Subject=
    Re%3AElectrical%20Gremlins> a1_sonse@yahoo.com
    <http://profiles.yahoo.com/a1_sonse> a1_sonse


    Tue Jan 1, 2008 5:23 pm (PST)

    Flying my Super III this morning when amp meter started showing
    discharge of about 10-14amps (40 is max on gauge). Started to lose
    radios & other electric stuff. Turned off all non essential radios &
    lights. Put 296gps on bat power. After landing plane sat about 4hours.
    Battery was week but it started & imediatly showed a good 14amp charge.
    During 1hr 45min flight the gauge went to just right of 0. All
    electrical equipment worked without fail. It was very cold today. About
    14o F when I left & only reached a high of 31-33o F. 45o F in the
    hanger when I pulled it out. Only thing different than normal is that I
    pulled the prop through 4 times prior to starting this morning. Could
    this or cold weather have had something to do with this. Or could the
    belt be loose. Plan to have my mech check it tomarrow, but would like
    suggestions. Can't think an altinator would quit then come back to life?

    Shannon Evans
    N5650S



    [Non-text portions of this message have been removed]



    Join BAC today and be a part of the ONLY Type Club for the Musketeer series!

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