Today's Message Index:
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1. 10:41 AM - Re: Re: Initial experience with dual Odyssey PC680s powering RV-10 w (Bill Watson)
2. 12:14 PM - Re: Re: Initial experience with dual Odyssey PC680s powering RV-10 w (ROGER & JEAN CURTIS)
3. 02:10 PM - Re: Batteries aboard aircraft (Robert L. Nuckolls, III)
4. 05:39 PM - Re: Re: Initial experience with dual Odyssey PC680s powering RV-10 w (Timothy Farrell)
5. 06:56 PM - Re: Re: Initial experience with dual Odyssey PC680s powering RV-10 w (Bill Watson)
Message 1
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| Subject: | Re: Initial experience with dual Odyssey |
PC680s powering RV-10 w
On 9/7/2011 12:51 AM, Robert L. Nuckolls, III wrote:
> If those are testing under 200A, they're not
> even flight worthy. I'll bet they cap-check at
> under 50% of new.
What do you mean by "cap-check"?
do not archve
Message 2
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| Subject: | Re: Initial experience with dual Odyssey PC680s |
powering RV-10 w
What do you mean by "cap-check"?
Total AH capacity of the battery
do not archve
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| Subject: | Re: Batteries aboard aircraft |
At 12:36 PM 9/7/2011, you wrote:
>
>On 9/7/2011 12:51 AM, Robert L. Nuckolls, III wrote:
>> If those are testing under 200A, they're not
>> even flight worthy. I'll bet they cap-check at
>> under 50% of new.
> What do you mean by "cap-check"?
Capacity check. How long will the battery run
useful items in an alternator-out condition . . .
or how long will the battery run certain gizmos on
the ground . . . and perhaps still start the engine?
A load-test goes to starting engines, a cap-check
goes to KNOWING with CONFIDENCE what kind of an
energy budget you can support with the fully charged
battery. Batteries are sized in the heavy iron
such that they supply specific loads for 30 minutes
during alternator/generator-out events when
worn to 80% of as-new capacity.
They still crank the engine just fine . . . but no
longer meet design goals operations under loss of
engine driven power sources.
Suggest you review Chapter 2 of The 'Connection.
Bob . . .
Message 4
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| Subject: | Re: Initial experience with dual Odyssey PC680s |
powering RV-10 w
Bill,
This particular comment got my attention:
*"That combined with the fact that almost every flight is
followed by much battery draining panel work followed by charging."
*I recall recently reading that draining the power of the Odyssey
batteries by doing service items such as long database upgrades and
gear swings is particularly bad for them. I don't know how much panel
work you got into, but it is possible that there was some damage
caused this way by not using an APU.
-Tim
Message 5
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| Subject: | Re: Initial experience with dual Odyssey PC680s |
powering RV-10 w
That's exactly what I was trying to say. From what I'm beginning to
understand, it's bad for the batteries. I'm not using any kind of power
supply other than the 2 batteries hooked to a 'trickle' charger. Bad stuff.
I'm still into a lot of panel configuration work and I'm still depending
on the flight batteries for that work. Now that I'm flying, it's
probably not so damaging.
I thought that hooking up the 10 amp Schumacher charger to my 2
batteries during this work might be a viable solution. But it appears
that the Schumacher has enough 'smarts' to see that there are 2
batteries involved and it goes into error mode for some reason.
Bill "now that the weather has cleared, we're going back to flying" Watson
On 9/7/2011 8:35 PM, Timothy Farrell wrote:
> Bill,
>
> This particular comment got my attention:
>
> **"That combined with the fact that almost every flight is
> followed by much battery draining panel work followed by charging."
>
>
> **I recall recently reading that draining the power of the Odyssey batteries
by doing service items such as long database upgrades and gear swings is particularly
bad for them. I don't know how much panel work you got into, but it is
possible that there was some damage caused this way by not using an APU.
>
>
> -Tim
>
> *
>
>
> *
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