If you are looking to make a cool Water Bottle Launcher that can launch 2 liter pop bottles with some good force have a look at this one at Science Toy Maker.
Have a look here for full build instructions.
"2-liter soda bottles turned water rockets are as shrieking good a time as a water park and a lot easier to build! They streak into the air faster than the eye can track while dousing everyone in the launch area with water. Occasionally, my middle school students host and teach classes of elementary school kids from across the street to make a take-home science project, and we always finish off with a couple of launches. Years later, when I teach those now-middle school kids, they never remember me, but invariably remember the water rockets!"
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that. looks. awesome.
good job. the video is extremely well put together and very clear on all instructions.
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Anyone have any ideas on how to modify this to launch 5 gallon jugs from a water cooler?
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Funny and technically interesting but what a waste of water…
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umm yeah very nice info. very cool and well can u make a water bottle rocket go any higher not a soda bottle.Kay thanks.
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Did this and it works well. I made two changes/improvements though.
1. Instead of a 2 inch 1 1/2″ pvc sleeve used to hold the bottle locking mech in place I used a 1 1/4″ coupler. No need to cut a little off of a long pvc piece.
2. Instead of melting and mushing the pvc to make a bulge I cut the top threaded piece off of a 2 liter bottle and slid it down to the line where you would otherwise melt and bulge. Then I added a rubber O ring gasket and carefully glued the cut off lid in place with epoxy.