Here is my combustion cannon. A friend and I built it for about $50 bucks on a Saturday. It took us about 20 minutes for assembly, 2 hours for the PVC glue to dry. I know that it's doesn't have all of those crazy add ons that everybody else's cannons do, but it shoots a good 600 feet, which is like 2 football fields long. Any comments/suggestions? Also I would love to see others' cannons posted so I can see what the future might bring for my cannon! I also added a video that you can watch for how we assembled and how it worked!
And here's a pic-

Here's the website-
http://wwwdavidsonpotatocannons.webstarts.com
Edited by jrrdw, tags, double post.