While Rob Dahm’s garage is no stranger to monstrous rotary engines, including four-rotor units cranking out more than 1,000 horsepower, this one is mind-bending. Here we have a massive, ...

As the automotive propulsion industry shifts toward electrification, the last-of-breed combustion engines are a stultifyingly similar bunch, focused around the same CAD-optimized 500cc cylinder ...

The 20th century was the age of the internal combustion engine. The fruits of industrial progress produced power plants tasked with everything from running generators to powering warplanes. The First ...

Power rating: 74.6 kW (100 hp) at 1,810 rpm Displacement: 6.1 L (372 cu in.) Bore and Stroke: 108 mm (4.3 in.) x 133 mm (5.3 in.) Kinner Motors, Inc. succeeded California’s Kinner Airplane and Motor ...

If you look at aircraft from the Second World War or earlier, you'll notice that many of them have engines with large frontal areas and cylinders arranged about the propeller crankshaft. This a radial ...