StratoLauncher IV Ultimate will propel a 2 liter plastic (PET) soda pop bottle over 350 ft. in the sky. Watch the last minute of the assembly video for launch procedure. Supports most .5L ...

Procedure: Fill a container, such as a two-liter soda bottle, with two cups of water. Measure out one tablespoon of different types of soap, including laundry detergent, dish detergent ...