The working mechanism is in the arms made of rolled ... which propels the bolt more like a slingshot than a crossbow. This paper crossbow can shoot a pencil or pen 100 feet. For even more power ...

“Crossbow made with pulleys and power springs. The complex mechanism, which required advanced mathematical and mechanical understanding to craft, was likely made by a certain genius who learned ...

The R500 was the first production 500 feet-per-second crossbow, and I was initially impressed with it after testing. But the cocking mechanism was delicate and prone to malfunctioning. My wife had ...