We’ve got to say the force with which the jaws close around the bottle flange is a bit ... Perhaps it could even launch a two-stage water rocket?

The problem with a lot of these water bottle rocket projects is that they leak where the bottle meets the launcher. In most cases this is a good thing as it’s almost impossible to build up ...

The rocket launches with little or no warning and ... acts on the water to eject it from the bottle. Compared to the bottle, the water is heavy. So pushing water out at a moderate speed backwards ...

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 ...

The EZ-Launch bottle rocket launcher has an internal spring loaded release mechanism. that allows the user to lock the 2 liter bottle in place during the fill up phase and release the bottle with ...

The rocket is part filled with water, and air is pumped in with a foot pump. When the rocket is released from the launcher, the high pressure inside the bottle equalizes with the air outside ...

The rocket launches with little or no warning and ... acts on the water to eject it from the bottle. Compared to the bottle, the water is heavy. So pushing water out at a moderate speed backwards ...