[Mr. Hart] wanted a quick and easy way to safely launch air-water rockets and came up with a pretty clever system. The core task is to pump air into the partially filled water bottle and then ...

Download the Water ... the bottle, neck down, at an angle to the ground – the handle of a garden fork works well but branches, bits of wood or plant pots will all work as a launch pad Check ...

This water rocket launcher lets ... you to inject water into the bottle. From there, a compressor connection pressurizes the bottle in preparation for launch. Watch it happen in the video ...

Download the Water ... the bottle, neck down, at an angle to the ground – the handle of a garden fork works well but branches, bits of wood or plant pots will all work as a launch pad Check ...