---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 04/30/20: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:13 AM - Re: Super-whizzy energy management systems (johnbright) 2. 11:18 AM - Re: Super-whizzy energy management systems (blues750) 3. 11:39 AM - Re: Re: Super-whizzy energy management systems (Gilles Thesee) 4. 04:59 PM - Re: Re: Super-whizzy energy management systems (Robert L. Nuckolls, III) 5. 06:07 PM - Test (Neal George) 6. 07:02 PM - Re: AEC Logo (Stuart Hutchison) 7. 07:43 PM - Re: Test (Lyle Peterson) ________________________________ Message 1 _____________________________________ Time: 11:13:43 AM PST US Subject: AeroElectric-List: Re: Super-whizzy energy management systems From: "johnbright" gilles(at)elixir-aircraft wrote: > Found some schematic and installation instructions here: > > ... flyefii.com/media/Bus_Manager_Installation_Instructions.pdf > > -- > Best regards, > Gilles EFII has an updated Bus Manager installation instruction. I have not studied it in detail but I see they eliminated one of the SPOFs in the fuel pump wiring, Dwg 3B. https://www.flyefii.com/media/Bus-Manager-Installation-Instructions-1-6-20.pdf -------- John Bright, RV-6A, at FWF, O-360 Single batt dual alt SDS EM-5-F. john_s_bright@yahoo.com, Newport News, Va Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496142#496142 ________________________________ Message 2 _____________________________________ Time: 11:18:13 AM PST US Subject: AeroElectric-List: Re: Super-whizzy energy management systems From: "blues750" Great discussion so far...hits close to home as I have a similar configuration on my EAB though I have incorporated OVP and a disconnect from the PMA. Additionally, the two EarthX batteries I have (ETX Hundred Series) are of the more recent BMS design which does not cut off available battery energy to systems, but does limit the charging current to the battery if the battery start receiving too much. I think Mr Kuss brings up a valid point regarding failure of the internal diodes, though both diodes would have to fail to prevent either battery from providing power to the essential bus via the switch. I cannot say that the designer of the Bus Manager failed at making a "safe system" - how robust are the components? Is the design flawed? Obviously, highly interested in the overall discussion. Dave Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496143#496143 ________________________________ Message 3 _____________________________________ Time: 11:39:35 AM PST US Subject: Re: AeroElectric-List: Re: Super-whizzy energy management systems From: Gilles Thesee Le 30/04/2020 20:13, blues750 a crit: > I think Mr Kuss brings up a valid point regarding failure of the internal diodes, though both diodes would have to fail to prevent either battery from providing power to the essential bus via the switch. I cannot say that the designer of the Bus Manager failed at making a "safe system" - how robust are the components? Is the design flawed? Hi all, Personnally I would prefer a means of disconnecting the alternator(s) from the ship, and wire the emergency power switch direct from the backup battery. BTW, maybe I'm missing the obvious, but what is the point of having two batteries if they always connect and disconnect together, albeit through some diode array (part-count counts) ? -- Best regards, Gilles http://contrails.free.fr ________________________________ Message 4 _____________________________________ Time: 04:59:10 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Super-whizzy energy management systems >BTW, maybe I'm missing the obvious, but what is the point of having >two batteries if they always connect and disconnect together, albeit >through some diode array (part-count counts) ? Do ya think? It seems that having two batteries is an admission to lack of confidence in the maintenance of your battery(ies) The top dogs in SVLA batteries produce very consistent products on highly automated production lines. Consistency of performance and mechanical robustness is excellent. The weakest link in a battery's ability to perform is chemistry. They will only 'cycle' so many times. Further, the chemistry can be abused in ways that does not immediately manifest in an observable drop in performance. I would have much more confidence in one, well maintained SVLA battery than in any pair of batteries that don't get replaced until the engine doesn't start. This is the reason for periodic checks for suitability for flight. This means that a battery gets pulled BEFORE it quits cranking the engine but after it fails minimum capacity for battery-only operations. Another problem with the diode bridge -ored- batteries, how do you know if all the diodes are performing as intended? There's no way to preflight all the functions of that box. Integrity of any power steering diode in the Z-figures is pre-flight testable. Bob . . . ________________________________ Message 5 _____________________________________ Time: 06:07:39 PM PST US From: Neal George Subject: AeroElectric-List: Test Neal George Sent from my iPhone ________________________________ Message 6 _____________________________________ Time: 07:02:31 PM PST US From: Stuart Hutchison Subject: Re: AeroElectric-List: AEC Logo Could John Tipton please e-mail me directly about the draft AEC logo - thank you! Mailto:stuart@stuarthutchison.com.au V/r Stuart > On 30 Apr 2020, at 7:54 am, jdpnm wrote: > > > Looks Good. You might want to move the 'onecction" closer to the "C" > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=496132#496132 > > > > > > > > > ________________________________ Message 7 _____________________________________ Time: 07:43:59 PM PST US Subject: Re: AeroElectric-List: Test From: Lyle Peterson You passed! On 4/30/2020 8:03 PM, Neal George wrote: > > > Neal George > Sent from my iPhone > > ------------------------------------------------------------------------------------- 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.