A valve from a bicycle inner tube ... Oh, and an apple may have fallen on his head. The water bottle rocket demonstrates two of his laws. Every action has an equal and opposite reaction.

Easy to assemble metal water rocket launcher with a 125 PSI safety valve. Rocket will NOT fly straight without an aerodynamic nose cone made from a second soda bottle and use only 1 cup (200 ml ...

In today's video I want to show you how to build a powerful dual thrust rocket ... bottle cork, old umbrella, tyre valve. All needed instructions are in the video. You should add 1/3 water and ...