Holy cow, check these guys out, they made cool homemade rockets that almost resemble powerful bottle rockets!
This is the first static test with our homemade tar/oxygen hybrid rocket motor. James Turner and myself (Eric Stackpole), and two of our friends, Jeff Bernard and Caleb Lesher did this project last summer because we wanted to learn more about how rocket engines work. We built the rocket in James’ garage in Humboldt County, CA completely out of parts we got at the local hardware store. We had previously done a little over 20 tests with polyethylene, but none of them came close to this having much power (note the shaking of the camera when the rocket fires.)
Also check out this kid who made his own rocket launcher.