Uploaded March 2025 | Updated September 2026, 1 week ago

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Our ARU-11/A "8-Ball" attitude indicator is broken and missing its electronics. But that won't stop us from making it work. Many thanks to Patron and famous aerobatic pilot R.J. Gritter for lending us his instruments.

Master Ken's in-depth article about his reverse engineering of the ARU-11/A: righto.com/2024/09/f4-attitude-indicator.html

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- Support us on Patreon: patreon.com/curiousmarc
- Amazon links for the tools I use in the lab: curiousmarc.com/amazon-links
- Channel merch on Fourthwall: curiousmarc-shop.fourthwall.com
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"Elevator Music" Credit: Crinoline Dreams by Kevin MacLeod

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