Certified vs. Experimental

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Just as airplanes are legally grouped as certified or Experimental, engines follow the same scheme.

Compression Ignition (Diesel & Jet A)

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Continental Thanks to their complex and high-pressure nature, diesel (Jet A-burning) piston engines are premium devices full of expensive parts, and their penetration into the...

Rotary (Wankel)

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American Rotary Engine /Auto PSRU’s We’re combining these two very separate companies under one heading because they join to offer a Mazda 13B rotary engine...

Stroke! Stroke!

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Over time, two-stroke engines in aviation have been supplanted by four-stroke units, trading low weight for a perception of greater reliability.

Radial and Rotary (Traditional)

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Classic Aero Machining For those seeking an authentic, full-gyroscopic rotary experience, New Zealand-based Classic Aero Machining has developed brand-new seven- and nine-cylinder Gnome Monosoupape engines....

Inline and V Four-Stroke

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AeroMomentum We hope AeroMomentum doesn’t mind us characterizing them as a boutique engine maker, but they are a compact company centered on delivering modern, water-cooled,...

Flat Four-Stroke Gasoline

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2022 Engine Buyer's Guide Index Introduction Flat Four-Stroke Gasoline Inline and V Four-Stroke Radial and Rotary (Traditional) Rotary (Wankel) Compression Ignition (Diesel & Jet...

Inline and V Four-Stroke

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2022 Engine Buyer's Guide Index Introduction Flat Four-Stroke Gasoline Inline and V Four-Stroke Radial and Rotary (Traditional) Rotary (Wankel) Compression Ignition (Diesel & Jet...

Radial and Rotary

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2022 Engine Buyer's Guide Index Introduction Flat Four-Stroke Gasoline Inline and V Four-Stroke Radial and Rotary (Traditional) Rotary (Wankel) Compression Ignition (Diesel & Jet...

Rotary (Wankel)

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2022 Engine Buyer's Guide Index Introduction Flat Four-Stroke Gasoline Inline and V Four-Stroke Radial and Rotary (Traditional) Rotary (Wankel) Compression Ignition (Diesel & Jet...

In Case You Missed It

Where Do Airplane Parts Come From?

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Building your own replacement kit parts, which is no different than scratch-building from plans, may save you money and time.

Wind Tunnel

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Fixed gear or retractable gear? Barnaby Wainfan examines the physics behind this longstanding design question.

Completions

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Builders share their successes.

Something Wild

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When a homebuilder has a vision for a unique paint scheme on his RV-3, he assembles a team that can bring it to life.