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Liberty 181/183

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In Case You Missed It

Plug-Gapping Tool

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If you read Paul Dye’s article “Automotive Plugs in Lycomings” in the August 2023...

Rear Cockpit

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Old airplanes, new pilots.

Optimizing Induction Air

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Fine-tuning intake system runners for increased performance and economy.

Full of Hot Air

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A custom-built ultralight hot air balloon that fits in an RV-7.