PVC air cannons are great, and everyone should build one of these at some point in their life, but what really makes this build exceptional is the valve. [Ben] created a piston valve for this ...

I was watching air racing superstar Steven Hinton attempt to do what his father had done 38 years before: set the three-kilometer speed record for piston-engine, propeller-driven aircraft.

The aircraft is now in the Honduras air museum, which keeps it in running (but not flying) condition. The last dogfights between piston-engine, propeller-driven airplanes weren’t fought in the ...

The next-generation BA440 hydraulically driven piston air compressor features a smaller overall footprint and is lighter and more efficient. Single-stage piston air compressor enables up to 40 cfm ...