Here it is... a simple water bottle rocket launcher that you can build in an evening and play with the very next day. I first saw this design at the Tunnel Mill scout camp in southern Indiana. Kids will have a blast (no pun intended) launching water filled 20oz plastic bottles 50 ft or more into the air, all the while getting their weekly shower!
Step 1: Shopping (enough for 2 launchers)
Shopping (enough for 2 launchers)
**** PRINT THIS LIST AND TAKE IT WITH YOU ****
Go to the hardware store and buy...
1 - 10 foot piece of 1/2 inch outer diameter PVC pipe.
8 - 1/2 inch PVC T???s
2 - 1/2 inch PVC elbows
6 - 1/2 inch PVC caps (you may want to buy a couple of extra T's, Elbows and Caps in case you mess up drilling or gluing)
1 PVC pipe cutting tool. Your really don't absolutely need this but it sure make cutting this pipe easier. You can use a hacksaw instead.
PVC Glue and cleaner (primer, often purple in color), comes in a two pack. Your neighbor probably has some you can borrow.
Go to the auto parts store and buy...
2 auto tire valves, also called Schrader valves. The end of them should be able to fit inside a 1/2 inch PVC pipe cap.
You will also need...
several 20 oz soda bottles. The ones that have previously held carbonated beverages. Wash them out or you may get ants!
An abundant supply of water. I like to take a 5 gallon bucket of water out to the launch site.
A standup bicycle tire pump.
A supply of neighborhood kids with dreams of becoming Astronauts! They will get wet!
A nice sunny day!