If you know anything about traditional rotary engines, oil consumption is an issue. Since the H2Starfire is a completely linear rotating engine design, there's no need for apex seals.

The 0.25-liter, four-stroke engine has two independent, self-balancing connecting rods that attach the single rotating piston to a pair of pinion gears.

Janco developed a new version of its engine/APU fire shut-off switch that includes two of the company's rotary switching mechanisms: a seven-pole double throw miniature rotary selector switch for ...

Each is linked to counterweights with external pinion gears that spin over a fixed ring gear. Apart from the casing, it is the only part of the MA-250 engine that does not move.

The Omega 1 engine is what's known as a rotary engine, a concept that actually dates all the way back to the 1950s. Rotary engines were conceptualized by German engineer Felix Wankel as an ...

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here’s everything we know about it including how much HP it could have.

Barrow's Rotary Engine. On supporting science journalism. ... of this miniature boat. She was built for the purpose of testing the operation of this engine, and is but 70 feet in length.