If only I had a video camera to capture this – this rocket launches fast (the 3 pictures above were all taken within one second). Ryder built it out of PVC pipe and a 2 liter bottle for our church’s VBS program. The short story of how it works: slide a half-full 2 liter bottle on the end of a PVC pipe. Hook up a bike pump to the other end of the pipe. Pump until highly pressurized. Pull string to release bottle. Get wet. Over the 4th of July, we took it out on the river with Ryder’s family and had a blast (ha ha ha) with it.
