Bob Maddox’s stage name, Crazy Rocketman, is a misnomer. Maddox doesn’t build rockets. He builds pulse-jet engines. There’s a difference. As for the crazy part—that may be true. Maddox is the world’s ...

Pulse-jet filtration and dust collection systems are critical components in industrial air pollution control and process gas cleaning. These systems utilise pulses of compressed air to dislodge and ...

This whole thing is already pretty ridiculous, but some have become even wackier over the years as owners have transplanted other engines into them. We've seen one that had a 650 cc parallel-twin out ...