Tennis Ball Cannon Science Fair Project

Using fairly common parts from a local hardware stores, we built a pneumatic tennis ball cannon for my son's science fair project. The variable for the science fair experiment is weighting the tennis balls to find the optimum weight to flight distance. We achieved 341 feet with a seven-ounce ball. I'd like to update the rig to a 2" ball valve... the 1" valve was a vestigial leftover from attempting to use a common 1" sprinkler valve, and obviously sacrifices a lot of flow. However, shooting tennis balls much further in our neighborhood wouldn't be advised. Stay tuned for more data...

Category:

Science & Technology

Tags:

• Tennis
• Ball
• Cannon
• Science
• Fair
• Project

[75MediumRare75]

did you still put a slit in the first one ?