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  #11  
Old 03-14-2019, 06:10 AM
Guy Prevost's Avatar
Guy Prevost Guy Prevost is offline
 
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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.
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Last edited by Guy Prevost : 03-14-2019 at 07:19 AM. Reason: Added the first sentence
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  #12  
Old 03-14-2019, 09:14 AM
AviatorJ AviatorJ is offline
 
Join Date: Feb 2015
Location: Oklahoma City
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Quote:
Originally Posted by Raiz View Post
I'm with you Rob but, to answer your question, the IBBS is convenient. You can achieve a good level of resilience without needing to think too hard about the electrical system architecture.
That was sort of my take on it.

For me my sole intent with backups is to get me out of the soup if something goes wrong. If it's an alternator issue, I have a backup. If something between the battery and through the VPX dies, I have the IBBS... if that all fails I have the G5 with it's backup battery.
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  #13  
Old 03-14-2019, 05:53 PM
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sahrens sahrens is offline
 
Join Date: Jan 2007
Location: Battle Ground
Posts: 480
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I went with Advanced Flight EFIS devices. The IBBS is wired directly to the AFS EFIS for control and the EFIS manages switching the power source from the main system power to the IBBS in the event of a power failure. That was less complicated than installing a two battery electrical system.
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