Maddox doesn’t build rockets. He builds pulse-jet engines. There’s a difference. As for the crazy part—that may be true.

In this video, we're getting hands-on in the garage to start a pulse jet engine. Watch the behind-the-scenes fun, challenges, and the tech wizardry that goes into creating these machines!

"It'll pop your ear drums if you aren't wearing protective gear. That's a drawback to the engines." No kidding. Pulse jet technology dates to the beginning of the 20th Century when they were ...