Hartstoc
Well Known Member
I’m in the process of upgrading my 7A to dual Lightspeed EI, and pondering ways to add appropriate reliability and true redundancy to my electrical system. On that front, I’ve pretty well concluded that a dual B&C alternator, dual-regulator, single battery system makes the most sense(not the subject of this thread-has been well covered in many others, but I will note that my plan is not to have a primary and an automated backup alternator, but instead a dual primaries that can be manually switched back and forth with one always completely inactive.)
I’m also removing the carb in favor of an Airmotive Performance Fuel injection system, and it has occured to me that a truely redundant electrical system could also support dual electric fuel pumps and enable me to eliminate the engine driven pump.
My question has to do with the choice of battery, which I will be planning to replace annually. Like MANY RV’s, mine is now equipped with an Odessey PC680, which is admitedly a solid, economical, and generally adequate unit weighing about 15pounds, but with fuel injection a bit more Ampacity could ocassionally come in handy. Is there something special about the PC680 that makes it uniquely well suited to aircraft?
Looking at the entire list of Odessey “extreme” batteries, there are several that appear to have considerably better specs in terms of capacity, reserve, and cranking power versus weight. In particular, the PC950 weighs just a few more pounds but has far greater cranking reserves than the 680. Link below- any experiences or comments on this?
https://shop.odysseybattery.com/p/pc950
Also, any battery would obviously be happier aft of the firewall instead of the usual forward installations. Would it be inviting disaster to mount these recombinant, near-zero off-gassing batteries on the people side of the wall? Thanks in advance for any shared wisdom!-Otis
I’m also removing the carb in favor of an Airmotive Performance Fuel injection system, and it has occured to me that a truely redundant electrical system could also support dual electric fuel pumps and enable me to eliminate the engine driven pump.
My question has to do with the choice of battery, which I will be planning to replace annually. Like MANY RV’s, mine is now equipped with an Odessey PC680, which is admitedly a solid, economical, and generally adequate unit weighing about 15pounds, but with fuel injection a bit more Ampacity could ocassionally come in handy. Is there something special about the PC680 that makes it uniquely well suited to aircraft?
Looking at the entire list of Odessey “extreme” batteries, there are several that appear to have considerably better specs in terms of capacity, reserve, and cranking power versus weight. In particular, the PC950 weighs just a few more pounds but has far greater cranking reserves than the 680. Link below- any experiences or comments on this?
https://shop.odysseybattery.com/p/pc950
Also, any battery would obviously be happier aft of the firewall instead of the usual forward installations. Would it be inviting disaster to mount these recombinant, near-zero off-gassing batteries on the people side of the wall? Thanks in advance for any shared wisdom!-Otis
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