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This Instructable will show you the how to build and fly water rockets. Featuring two stage rockets and drop away boosters, and also some basics.
This instructable is based on my knowledge of water rockets, that I have learn in the past few years.

I am not responsible for any damage you infict on your self or others from launching or building water rockets

Have fun building and flying!

Step 1: Lets get Started

A water rocket is propelled by pressurised air forcing water down though a nozzle. This creates thrust.

If you took a standard two litre fizzy soft drink bottle and pressurised it to120 psi the rocket would reach about 100 or so feet.

But then if you took 2, two litres bottles and pressurised it to 120 psi again the rocket would go about 150 feet or so because the rocket has more air in it therefore creating more thrust. The rocket will only go 50 feet more because of the added mass. You can stop this by making a two stage rocket. A two stage rocket will work better because it would not have to carry the full payload on all of its flight.
<p>hey i've never made one in my life any advice?</p>
<p>only advice, pressure is a beast in a locked up cage, handle it with care... :)</p>
<p>i cant understand how the parachute will open ???<br></p>
<p>there is no parachute. you just let it crash, make any repairs and go again</p>
<p><strong><em>WOW</em>,</strong> I have built bottle rockets before, but, this is <strong><em>AWESOME!!!!!!!!!!!!!!!</em></strong></p><p>10 out of 10</p>
<p>oh i made it some years ago later </p>
<p>that looks intense</p>
<p>Dude is this okay.</p>
<p>What are you doing?</p>
<p>but cool</p>
cool rocket
do you actually own the copyright to these diagrams, i highly doubt you have gone through what is needed to have the copyright for them and putting that little &quot;copyright OscarThompson&quot; in your pictures doesn't actually do anything
don't be mean to the person it is a good rocket
He is just putting acknowledgment that it is his.
I'm pretty sure you get copyright automatically, even if you don't claim it.
I have only put it in so people can't use my pictures, unless they want my name on it. The my pictures as i drew them on paint, it really doesn't matter too much that i havn't copyrighted them.<br /> <br /> Thanks<br /> <br /> Oscar
hello oscarthompson could i plz have ur email because i have a few questions on specific aspects of the project :) thank you
I use small sections of threaded lamp rod for my water rockets, but I don't know about oscarthompson.
<em><strong>nice project do you have a video of it flying i wana see how it fly's so i know if it worth making</strong></em>
nice water rocket <br>do you have a web site
Unfortunatly not. You should check out aircommand water rockets though!<br><br>Thanks<br><br>Oscar
i like it!! definately gonna make sumthin like this one
verry good ilike
What kind of plumbing coupling?
what with the picture?
how long will the pressure hold
Wow, this is amazing! Keep up the good work!
Wow, nice build!
Cool!
What kind of glue should I use<br />
I used <a href="http://www.tooled-up.com/Product.asp?PID=977&amp;Referrer=froogle" rel="nofollow">bostik soft plastics glue</a> and it works fine for me. Although you can use <a href="http://www.gradyshardware.com/Henkel-828472-PL-Premium-Polyurethane-Construction/M/B0002YV81Y.htm?traffic_src=GB&amp;utm_medium=CSE&amp;utm_source=GB&amp;id=uk" rel="nofollow">PL premuim</a>, but this is a bit more expensive and harder to get hold of in the UK, but it may give you better results.<br /> <br /> Oscar.<br />
who cares if he has a copyright?!?!? this is a great instructable that i used to spend a few hours with my daughter AND&nbsp;an instructional speech for my speech class. but the instructions you put on here were clear and easy to read. and i researched the launcher online for several hours and i believe this to be the best one.<br /> <br /> i used the 2 bottle design and i used gorilla glue (which is stronger than hot glue). the thing reached 15 to 20 feet in the air and the reason for this failure was my choice of glue. the glue expanded like it is designed to BUT&nbsp;this glue is not a good adhesive for the plastic in the bottles.<br /> <br /> i can see the potential if i just follow instructions (this was a problem for me growing up). i always think i can improve the process, but once again i am wrong. but my daughter had an awesome time, i had a great time, and we got the whole family together for the launch so the project was still an overall success. i will be building bigger and better in the near future.<br /> <br /> thanks for the great instructable oscarthompson!<br />
I used to make make water rockets when I was a kid.&nbsp; All I ever&nbsp;used was&nbsp;a 2 liter bottle, duct tape,&nbsp;and the valve stem from a tire.&nbsp; Drill a hole just slightly smaller than the valve stem in the plastic lid and jam the sucker through it as far as you can, wrap the bottle with duct tape (just one layer is fine) - this is a &quot;better safe than sorry kinda thing&quot; -&nbsp; never had one blow up.&nbsp; Fill the bottle about 1/5 of the way with water, use a hand pump or air compressor to add about 45 psi, turn upside down and unscrew the lid.&nbsp; Mine usually went above 100 feet easy, of course I used a bit more pressure.&nbsp; ;)
Thanks, you made my day !<br />
I'm gus this does not go high&nbsp;&nbsp; it looks to big to go high!!! But any way sweet!!! 5stars!!!!!!!!
Can we see a video of your big rocket?
what do you mean with rubber bung in the part list of step 10
rubber bungs like the ones in wine bottle's but rubber. Type it in to google images<br /> <br /> Thanks <br /> Oscar
I see thanx
i like the idea but i don't konw anything.<br /> How can i do for fill the boosters?<br /> do i have to put their a valvle each?<br /> and are the boosters gonig to fall down?<br /> if yeah how will i do it ?<br /> thanks for the &nbsp;ideas.<br /> <br />
You can fill the boosters by putting the water in the top of the bottle. The bicycle valave will help prevent leakage.<br /> The boosters will fall down when the thrust of the booster can no longer beat the air resistance thus gravity pulling the booster down.<br /> <br /> This can be achieved by making&nbsp;three of the launch mechanism's just on one Pad (&nbsp;two for boosters one for main)<br /> <br /> Oscar
good so far, but the diagram for this step cannot be viewed properly at the current size, and even when viewed at the right size, it is very hard to understand.<br />
This is AWESOME!&nbsp; Its the John Holmes of water bottle rockets.<br />
what is the materials list for this project
Which part of the project?
all of it <br /> we need to know the materials list for everything SO WE&nbsp;CAN&nbsp;DO&nbsp;THE&nbsp;PROJECT...<br /> AND&nbsp;PASS&nbsp;OUR&nbsp;CLASS

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Bio: I like to make instructables which are fun to build or make. I'm interested in bikes, science and rowing. send me a message if ... More »
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