It was adding up the # of backup batteries I needed for my dual electronic ignition glass panel airplane that pushed me in this direction. I just went with two EarthX batteries on the firewall and skipped the tcw backups. I also have two alternators. My goal was system level redundancy, not just a few points. That was a net one lb gain from a single pc680 and alternator, basically because of the three contacts to manage my system. I switched to a Whirlwind prop to keep CG in check.
Last edited by Guy Prevost : 03-14-2019 at 07:19 AM.
Reason: Added the first sentence
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