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loboloda(at)execulink.com
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 Posted: Mon Sep 20, 2010 10:50 am Post subject: Low voltage |
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Coming back to home base yesterday I noticed voltage was indicated at
11.5 rather than the usual 14.
The ammeter was showing a slight discharge with the strobes on.
Readings were not affected by engine RPM.
I'd made a couple of stops along the way and had no trouble re-starting.
I'm hoping that this is nothing more than an indication that my 6
year old Odyssey battery has suffered a partial failure.
As always suggestions on probable cause from those who have been
there would be appreciated.
Dave C-FBZI
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paul.the.aviator(at)gmail
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| Posted: Mon Sep 20, 2010 11:50 am Post subject: Low voltage |
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Hi Dave,
I would start with a discharge test on your battery. Stores like Batteries Plus do this as a free service.
Paul
[quote][b]
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Rocketman
Joined: 07 Sep 2010
Posts: 87
Location: USA, Earth
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| Posted: Mon Sep 20, 2010 2:12 pm Post subject: Low voltage |
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Dave,
First thing I'd check is that big old 30 amp fuse, then go to the
battery. If that don't get it, check the regulator...
Jeff - Baby Blue
On 9/20/2010 1:50 PM, david miller wrote:
| Quote: |
Coming back to home base yesterday I noticed voltage was indicated at
11.5 rather than the usual 14.
The ammeter was showing a slight discharge with the strobes on.
Readings were not affected by engine RPM.
I'd made a couple of stops along the way and had no trouble re-starting.
I'm hoping that this is nothing more than an indication that my 6 year
old Odyssey battery has suffered a partial failure.
As always suggestions on probable cause from those who have been there
would be appreciated.
Dave C-FBZI
Checked by AVG - www.avg.com
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rehn(at)rockisland.com
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| Posted: Mon Sep 20, 2010 2:37 pm Post subject: Low voltage |
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Dave
The Odyssey battery is likely what kept you going, I would suspect the regulator/rectifier. Mine went out and it sounds very similar to what you experienced. I also have the Odyssey it's like the energizer bunny! The battery would be the relative cheap fix so maybe?
Jerry
Sent from my iPad
On Sep 20, 2010, at 11:50 AM, david miller <loboloda(at)execulink.com> wrote:
| Quote: |
Coming back to home base yesterday I noticed voltage was indicated at 11.5 rather than the usual 14.
The ammeter was showing a slight discharge with the strobes on.
Readings were not affected by engine RPM.
I'd made a couple of stops along the way and had no trouble re-starting.
I'm hoping that this is nothing more than an indication that my 6 year old Odyssey battery has suffered a partial failure.
As always suggestions on probable cause from those who have been there would be appreciated.
Dave C-FBZI
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frankm(at)clara.net
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| Posted: Wed Sep 22, 2010 1:59 am Post subject: Low voltage |
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Dave
There is a piece in the Safety Spot in Septembers Light Aviation about the same problem (though the answer may not be the same). Go to http://www.lightaircraftassociation.co.uk/2010/Magazine/2010/Sep/Safety.pdf and look at the Himax article. In that case the problem was neither the battery nor the regulator/rectifier.
Frank
[quote][b]
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loboloda(at)execulink.com
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| Posted: Wed Sep 22, 2010 12:42 pm Post subject: Low voltage |
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Thanks Frank,
So many causes of electrical problems !
I charged my battery today, went to about 13V, but then as I held the voltmeter on the reading slowly
began to decrease, working it's way down to the previously indicated 11.6V
I'm presuming this is a battery in need of replacement.
Dave
On 22-Sep-10, at 5:27 AM, Frank Mycroft wrote:
[quote] Dave
There is a piece in the Safety Spot in Septembers Light Aviation about the same problem (though the answer may not be the same). Go to http://www.lightaircraftassociation.co.uk/2010/Magazine/2010/Sep/Safety.pdf and look at the Himax article. In that case the problem was neither the battery nor the regulator/rectifier.
Frank
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