2-Stroke Engines For Aviation
That simplicity is precisely why the two-stroke powerplant has never gone away, and why, in 2026, it remains the heartbeat of ultralight and powered paragliding aviation worldwide.
Malcolm Brubaker with Icarus II restoration team members & photos: MULA, John Chapman, Monty Morgan, Charlie Morgan, Rob Edmunds, Bill Darnell and team lead, Rick Hayes.
That simplicity is precisely why the two-stroke powerplant has never gone away, and why, in 2026, it remains the heartbeat of ultralight and powered paragliding aviation worldwide.
The four-stroke engines powering Light Sport and Ultralight Aviation in 2026., It is quieter. Smoother. The power comes up evenly and stays there
If you fly ultralights, motorgliders, or anything wearing an LSA placard, electric propulsion has quietly stopped being a novelty.
Every generation of aviators has been told that the two-stroke is dead. The two-stroke did not receive the message
Batteries in aviation aren't just a propulsion story. They're also the most quietly successful electric conversion in general aviation over the last decade.
Let's talk about what happens when any of it goes wrong. Gasoline and lithium batteries are both, at bottom, stored energy waiting for a reason to release itself fast
John Chapman - Interesting stories of how the pioneers of aviation did it!