The Autopian on MSN

The most complicated new engine has three cylinders, a rotating block, a stationary head, and is shaped like a circle

Meet the Birotary, a crazy new and complicated engine that has three cylinders arranged like a star, a rotating block, a ...
RideApart on MSN

This 100-horsepower rotary engine motorcycle was a bad idea, and that’s why it’s badass

The Van Veen OCR1000 was a rotary-powered engineering flex and one of the rarest motorcycles ever made. And now, it can be ...