Pumpkin chunking is the sport of hurling a pumpkin by mechanical means for distance. Devices range from slingshots and catapults to centrifugals, pneumatic cannons, and — most fascinating of all — the trebuchet. Whenever I’ve watched one fire, I’m struck by how much stored energy sits in that wooden frame. A massive counterweight drops, the … More Trebuchets, Pumpkins, and Fly Rods