Download the Water bottle Rockets PDF(378 Kb ... Use a drill, or a punch and a small screwdriver. The hole needs to be as small as it can be while still letting the valve go through.

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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.

It’s an automatic parachute deployment system that you build into the nose-cone of your rocket. The main portion of the build is made out of plastic soda bottles (2 liter size) to end up with a ...