Welcome to the Water Rocket Forum, sponsored by The Water Rocket Achievement World Record Association.

Since our founding in 2003, we've become the largest, most sophisticated and ground breaking group supporting you, the serious water rocket flyer! Whether you are a beginner or an expert, the WRA2 has something for everyone.

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.


Hello Everyone. It is that time of year again. Time to approve changes to the competition rules for the new year.

You Can vote at:
viewtopic.php?f=32&p=19486#p19486

Please take the time to vote. TH:

Hello from Rochester, New York!

This forum is for new members to introduce themselves and tell us how they got started in water rocketry.
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Pere Ubu
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Joined: Fri Sep 08, 2017 4:41 pm

Hello from Rochester, New York!

Post by Pere Ubu » Fri Sep 08, 2017 4:48 pm

I found out about water rocketry actually about five years ago, but I only started to get serious about it now; I bought a Quest water rocket launcher (which broke) and have constructed both a Gardena and standard Clark cable launchers - the gardena works up to 40 PSI or so, and I haven't full-tested the Clark launcher yet. The store where I work sells flavored soda water which has great smooth-sided bottles which I've been using for rockets, just simple one-bottle one stage things for right now and not even fins yet! I was just looking at the FTC tubing at Home Depot today, though...


Why your rocket is unstable = CN⍺1/2⍴v2⍺Ar

Northeast Pataphysical Institute, Aerospace Division

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