---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 09/07/11: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 10:41:06 AM PST US From: Bill Watson Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 12:14:37 PM PST US From: "ROGER & JEAN CURTIS" Subject: RE: AeroElectric-List: 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 ________________________________ Message 3 _____________________________________ Time: 02:10:24 PM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: 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 _____________________________________ Time: 05:39:42 PM PST US Subject: Re: AeroElectric-List: Re: Initial experience with dual Odyssey PC680s powering RV-10 w From: Timothy Farrell 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 _____________________________________ Time: 06:56:24 PM PST US From: Bill Watson Subject: Re: AeroElectric-List: 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 > > * > > > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.