OT - Potato Guns and Chemistry
Now that school is back in seesion, and along with that great portion of my time comes chemistry, I have to come up with a suitable project. The assignment is to come up with an experiment that illustrates the benificial chemical reactions all around us everyday. So I got to thinking about the most benificial reaction possible.
What in the world could be more benificial than making a potato go really really really far away really fast?
So I have decided on the Potato gun as my project, but have yet to get my teacher to approve it. I'm sure he will.
My actual question is, what is the best fuel to use in the combustion chamber. So far I have gotten the best results from Right Guard (a mixture of propane, butane, isobutane, and all that wonderful powder and perfume). I need a reaction that has most of its force exerted very early in the burning process. From my research, it is not as much the size of the explosion, but rather the speed of the explosion. Because it takes such a small force to push a wet potato down an equally wet PVC barrel, an extremely powerful explosion isn't a must.
For the ignitor, I am using an Bar-B-Q grill ignitor. You know, the push button kind. The spark is pretty dang big, and lights off every time.
Keep in mind I am using schedule 40 PVC, so no oxidized reactions or Hydrogen will be used. It would be awesome, but I don't thinnk I want to pay hospital bills that big.