An Anonymous Coward writes: "For those who liked the jet-engine beer cooler, here's another back-yard inventor from New Zealand who likes playing around with jets - he's not looking at the more common turbojet, but instead seeing how he can improve the long-neglected pulse-jet engine. For some background, see his homepage or just look at the go-kart he built to try out his jet." Pulse jets are an inefficient design that has been entirely superceded by other engines - but wow.
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