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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.


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Widemouth Launcher

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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Re: Widemouth Launcher

Post by Water Rocket Expert » Wed Mar 26, 2014 2:59 pm

Yeah, I have yet to use fins like that either but I still thing that the weight of the wrench would brake the glue.


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Re: Widemouth Launcher

Post by U.S. Water Rockets1 » Sun Mar 30, 2014 12:04 am

Water Rocket Expert wrote:Ye USWR, your clamp idea has been great. I have been using it for several months now and it works fine with the max of 285 psi I have tried. The real thing that works best, is holding the wire ties down with a hose clamp. The strength of those clamps are amazing and that relieves the clamp from doing all the work. The only problem is that I could find a clamp like yours so mine wasn't wide enough and I couldn't use the rubber. Also the plastic PVC doesn't like to adhere to well. I have found that wire ties make the bond much stronger!

Thanks for your hard work and research. It pays off!
We found that welding clamps work great too and have a deeper throat that lets us clamp right to the collar without the spacers (they were pieces of PVC molding in the video, not rubber). Welding clamps come in all shapes and sizes and are like big vise grips with huge jaws.


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Re: Widemouth Launcher

Post by Water Rocket Expert » Sun Mar 30, 2014 2:15 pm

So it's welding clamps you used. I was wondering how you got such big clamps. Do they sell them at Harbor Freight?


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Re: Widemouth Launcher

Post by bugwubber » Sun Mar 30, 2014 2:24 pm

Sitting in the backyard in Texas launching rockets. Here's an altimeter readout from the 1 liter widemouth launched at around 80psi
HK-A_2014330_133.png
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Re: Widemouth Launcher

Post by bugwubber » Sun Mar 30, 2014 2:30 pm

I really got to name this rocket because it just beat my 2 liter at 20 psi less. No camera on it though.
CAM01003.jpg
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Re: Widemouth Launcher

Post by Water Rocket Expert » Sun Mar 30, 2014 2:45 pm

Cool! My best 2 liter is 192' at about 90 psi.


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Re: Widemouth Launcher

Post by Alien Space Agency » Wed Nov 18, 2015 8:47 pm

What diameter is the rocket nozzle? 25mm or 30mm?


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Re: Widemouth Launcher

Post by bugwubber » Thu Nov 19, 2015 10:30 pm

Alien Space Agency wrote:What diameter is the rocket nozzle? 25mm or 30mm?
Just over 30mm
20151119_202726.jpg
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Re: Widemouth Launcher

Post by Alien Space Agency » Fri Nov 20, 2015 3:03 am

Well, that's cool. You'd be able to lift 5kg weights with a bigger version of this rocket!


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