[acidrain2012]

We built a launcher last summer out of spare parts and various scraps, and we managed to blow a 200 lb solid steel door open 90 degrees at about 110 psi. We found that the t-shirts work best when either taped or zip-tied (if you are going for distance). If you aren't going for distance, then there is a way to fold the shirt so it opens when you launch it, making it much less dangerous. We have used it at a couple of tractor pulls, and we are planning to mount it on our robot from the 2006 season (the robot's name is Tank, so we are planning on making the launcher rotate). To help with safety concerns, we found that it is best to keep the launcher and air storage tanks in separate locations, along with the hoses (if there are any). Hope the build goes well!