replacing PC680 battery wih eartx etx900vnt

I had a corvair install and used the PC 680, I am on my second battery.

I replaced corvair with O200 so now I only need reserve power for facet fuel pumps, without distributor energizing.

Have any corvair powered AC gone LIpo? Im thinking of EarthX etx900vnt mounting in aft location as in my corvair mount

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Permalink Reply by John Austin on July 27, 2023 at 7:25am

This is a great discussion of things to think about on electrical system design!  Just as we (hopefully) build an aircraft to fulfill our typical "mission," one needs to design their electrical system's "mission" also!  For instance, in my case, I'm a "nice day" VFR flier, so that's why my dirt-simple, gravity-fed (no electric fuel pump), direct-drive, air cooled Jab 3300 with a single EarthX battery works for me.  It's a simple and very lightweight system.  All the battery is essential for is to start the engine as the Jab's magnetos are not battery-dependent - after starting, the engine will keep running as long as it has fuel, oil, and air! LOL!  Should the panel go dark due to electrical failure, it's no big deal since I'm always in daylight, good weather, and really don't need flight instrumentation to get home since the STOL 750 has such benign handling qualities!  Obviously, a totally different set-up is needed for other circumstances.

John

Permalink Reply by christopher fryatt on July 27, 2023 at 9:30am

In our aircraft an issue with the charging system ( electric dependant engine...Corvair, or  low wing electric pump only O-200D ) a charging issue should be a no-go,  or if inflight an emergency requiring land as soon as practical. It would be a no dispatch in any aviation job I've had. 

Permalink Reply by charlie rosenzweig on July 27, 2023 at 9:08pm

The post was about Lipo vs more conventional batteries.  There has been some very good information posted here by folks on the benefits and downsides and differences of LiPo (and LifePo4) vs traditional batteries.   

Permalink Reply by christopher fryatt on July 31, 2023 at 11:18am

Suggested Placard:

WARNING

This Aircraft is equipped with an electronic ignition and fuel system that requires continual electrical power. Do not operate aircraft with low battery voltage or an inoperative charging system.

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