Reliable Electrical Systems for Experimental Aircraft, Oshkosh 2023, and Announcements

This is the presentation from Oshkosh 2023, here is a link to the slides:
docs.google.com/presentation/...
Had a great time presenting this at Oshkosh, will be there this year again with a presentation on project management for homebuilt aircraft. Hope to see you all there.
check out:
monkworkz.com/
for the lightest power source for experimental planes on the planet! Thanks for watching, Bill

[@rsjanko]

Excellent information clearly explained, good job Bill!

[@AraCarrano]

Thank you for the content, wish the audio was mastered a little louder.

[@joewaltz8087]

Nice job again Bill, your product and information are always helpful.
To expand on your analysis, using a Garmin system (and possible others) with a TCW backup battery (or equivalent) as detailed in their install manual follows your guidance and further simplifies the install. Most of the individual components (LRU's) have dual power inputs with diode protection provided internally. Hooking the backup battery to the secondary input effectively makes it the essential bus without the need for external diodes. You get brown out protection during start this way too.
Another plus for using fuses is that there are diode protected fuses that can be used for those LRU's that do not have dual power inputs.
I've found the Bussman sealed fuse blocks with relay positions very useful for simplifying the architecture. Available in many different configurations to fit your needs.

[@grahamelvis6473]

Two thoughts from me - 1) for a backup sytem to work you must be able to check it's OK at pre-flight, 2) I would be wary of lithium batteries - they burn at 2000deg C. your SS firewall would melt and your extinguisher would be useless!

[@monkworkz5579]

Yep, any backup system needs to be tested on a regular basis. Lithium batteries are a "hot" topic! depending on what chemistry, where they are installed and if you have them vented. Vented overboard with LiFePo chemistry is probably the safest arrangement. The thermal runaway temp for a LiFePo probably not 2000 C, that is far too high.

[@Ben_EhHeyeh]

How do I connect it to ground?

[@monkworkz5579]

Hi Ben, Airframe ground for the regulator that I make, grounding strategy overall is a topic for another video probably