There is a lot of great science in a popgun. A person building and using on has to grapple with atmospheric pressure and sonic compression waves.
|This variation from Paul Fontaine: Hi Slater Thanks for the pop gun plans. I have made a couple of adjustments. I bought a pvc 1/2 tee and attached it to the pipe. It makes it a little easier for the kids to use. I also cut out some handle grips and drilled a couple of holes(5/8') to hold the ammo. I also found that a 5/8" dowel seemed to provide a better seal. I glued and used some brads to secure it to the grip. I also was able to make some corks by using a dremel tool and reduce the synthetic corks to the proper dimension. Again thanks for the plans.|| From Charles Marshall: As you can see from the pics, we finished the gun. Just great, and it's so satisfying to have instructions that actually work: it makes a loud bang, and the cork, when not attached, travels a good 50 feet.
Now for the simple water rocket .....
|Here is a finished popgun that Jeff Kamon made from the instructions. He says that his son enjoys the popgun.|
opguns are loud and fun. I have made the assumption that a person who can build this popgun is smart enough to know that you don't shoot at people.
|For illustrated instructions for making a popgun click here or the picture.|
|For explanations, activities and cool links related to popguns and air pressure click here or on the picture.|