Superior Engines Announces 100 HP Diesel Program

Superior Gemini Diesel engine
Superior Gemini Diesel engine

This morning at the Sun 'n Fun Fly-in, Superior engines announced their new diesel engine program, starting with a 100 HP three-cylinder (six piston) engine targeted at the LSA market. The Gemini Diesel is now running on test stands in the UK and at Superior's headquarters near Dallas and runs on diesel fuel or Jet A. The dual-crankshaft engine is a unique layout for the traditional aircraft engine market, but they are confident that the technology will be a viable replacement for the similar-sized Rotax 912, offering better specific fuel consumption and increased range on the same amount of fuel.

They are estimating a retail price of around $24,900, with availability around the first of next year. We'll bring you more details as soon as we have them.

Superior Gemini Diesel engine

Superior Gemini Diesel engine

Paul Dye

Paul Dye, Kitplanes® Editor in Chief, retired as a Lead Flight Director for NASA’s Human Space Flight program, with 40 years of aerospace experience on everything from Cubs to the space shuttle. An avid homebuilder, he began flying and working on airplanes as a teen, and has experience with a wide range of construction techniques and materials. He flies an RV-8 and a Subsonex jet that he built, an RV-3 that he built with his pilot wife, as well as a Dream Tundra they completed. Currently, they are building a Xenos motorglider. A commercially licensed pilot, he has logged over 5000 hours in many different types of aircraft and is an A&P, EAA Tech Counselor, and Flight Advisor, as well as a member of the Homebuilder’s Council. He consults and collaborates in aerospace operations and flight-testing projects across the country.

2 Replies to “Superior Engines Announces 100 HP Diesel Program”

  1. I am very interested in this diesel motor.
    I am unable to see any information on how this motor is assembled.
    Can you provide me with the assembly of this motor as I am still not understanding how the left and right crankshaft are joined.
    I am looking to buy a Murphy Maverick that has an older model aircraft motor with no electrics on it and would like a better upgrade motor and would like to know more about your motor.

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