Learning how to build and understand a mini engine is an exciting journey for anyone interested in mechanics. A mini engine, despite its small size, works on the same principles as larger engines. By ...

Back in 2012, Gizmag looked at LiquidPiston’s X2 rotary engine. The compact, low-vibration, high-efficiency 70 bhp and 40 bhp compression ignition engine was something of a sensation. Now the company ...

The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

Imagine an engine that's 30 percent smaller than a traditional piston design of like output, and that runs smoothly, with less noise and vibration. Plus, it burns several types of fuel. That's the ...