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 ...

Practise and challenge your friends! Download the Water bottle Rockets PDF(378 Kb). Adobe Acrobat is required. SAFETY: This rocket uses air pressure to fling a bottle at high speed 20–50 metres.

This water rocket launcher lets you do just that ... Watch it happen in the video after the break. That bottle could use some fins and a nose cone but there’s no denying the delight the kids ...

Water rockets are created from plastic bottles, made aerodynamic by nose cones and fins. The rocket is part filled with water, and air is pumped in with a foot pump. When the rocket is released ...