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 this case, though, we’ll respectfully disagree with [Zach Hipps] assessment of his remote-controlled soda bottle rocket launcher as “overengineered”. To us, it seems just right.

The high voltage is carried into the combustion area via 2 wires through a PVC pipe with dimensions such that it tightly fits the opening of the soda bottle (projectile). The switch which activates ...

It does a remarkable job of pressurizing and launching soda bottles which ... lot of these water bottle rocket projects is that they leak where the bottle meets the launcher.