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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.

Your launcher

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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rockets-in-brighton
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Re: Your launcher

Post by rockets-in-brighton » Sat Dec 13, 2008 4:59 am

That's a fine looking launcher, some nice idea there. Thanks for sharing it, and welcome to the forum!


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U.S. Water Rockets1
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Re: Your launcher

Post by U.S. Water Rockets1 » Sat Dec 13, 2008 10:16 pm

Hi Freqster! :W

That's a very ingenious launcher design you have constructed. The extruded aluminum T-Tracks you've used for adjustments is a great idea. You could fit any size water rocket on the launcher using that system. Great work. Thanks for posting your design, and welcome to the forum!


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Aquafire
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Re: Your launcher

Post by Aquafire » Mon Dec 15, 2008 8:56 am

Where do you get aluminum C channel to make those rails from? Is it expensive? Thanks. And welcome!



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Re: Your launcher

Post by Andrewlee » Mon Feb 23, 2009 4:07 am

I'll try getting some pictures of mine up later in the next couple of days. It's no where near as complex as these others I see. Mine is simple, and cheap; made almost all out of PVC. It uses cable ties as the locking mechanism. Although I will admit, that again, I was not the first to do this. I believe it was the Bible that states "There is nothing new under the Sun". Guess I need to start looking over it.

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Andrewlee
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Re: Your launcher

Post by Andrewlee » Mon Feb 23, 2009 4:38 pm

Here are some of my launcher pictures. This is CT-2. CT-1 Bit the dust when my grandpa ran over it with a tractor...oops
I am not completely finished with this one yet. i still need to put in the changeable launch tube, for varied heights rockets. And I still haven't settled on a base design. I'm wanting it to be as collapsible as possible.
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team-helder
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Re: Your launcher

Post by team-helder » Tue Apr 21, 2009 1:12 pm

amiazing


water rockets are fun what i mean with fun wen u put some foam in it and let ur dad leanch it right next to it !

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Re: Your launcher

Post by SaskAlex » Fri Apr 24, 2009 7:53 pm

Hi, you can check my launcher out at http://www.geocities.com/af_wr/. The website is crap, and I never even finished it, but the launcher is cool. I now have a slightly adapted design that uses a copper pipe inside the pvc pipe and uses metal fittings but it's pretty much the same. When it was still all pvc the T piece decided to blow up on me once at only 140 psi. That stuff really does shatter.

Alex



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U.S. Water Rockets1
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Re: Your launcher

Post by U.S. Water Rockets1 » Sat Apr 25, 2009 10:15 pm

SaskAlex wrote:Hi, you can check my launcher out at http://www.geocities.com/af_wr/. The website is crap, and I never even finished it, but the launcher is cool. I now have a slightly adapted design that uses a copper pipe inside the pvc pipe and uses metal fittings but it's pretty much the same. When it was still all pvc the T piece decided to blow up on me once at only 140 psi. That stuff really does shatter.

Alex
Be careful with the copper pipe. The pipe itself is very strong and can hold a lot of pressure, but the new solder with no lead in it that is used to connect the copper pipes is quite brittle and can fail at much lower pressure than the pipe fails. This creates a copper pipe water rocket missile!


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Re: Your launcher

Post by SaskAlex » Sun Apr 26, 2009 11:21 am

Thanks for the heads up USWR. I can only get about 200 psi out of my bike pump right now, do you think I should worry at these pressures? Actually, since my launcher is designed to release when pressure is relieved, if my soldered joint was to fail, the launcher would only go up with the rocket a short ways and then be shot right back down to earth. That's not to say my rocket would go too straight though.

Alex



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