In this episode, we explore the fascinating world of aircraft reciprocating engines and propellers. From the fundamentals of piston-driven powerplants to the differences between spark-ignition and compression-ignition designs, we break down how these engines turn fuel into thrust. We’ll look at propeller systems — fixed-pitch versus constant-speed — and explain why governors, manifold pressure, and pitch control are essential for performance and safety. You’ll also hear about induction and fuel systems, superchargers versus turbochargers, and critical support systems like oil, cooling, and ignition. Finally, we dive into combustion issues such as detonation and preignition, and examine a real-world propeller overspeed case. Packed with practical insights, this episode is a pilot-ready guide to understanding the engines and propellers that keep general aviation flying.