deathbyDWV wrote:So do you not know if they fit in 2.5 inch pipe? Does anyone know? If they do fit then I'll have to get some for a launcher I have...
duh1... <a href="
http://www.google.com/">Google</a> home page; Type in : "lacrosse ball diameter" 
duh2... Pick the very first website that appears at the top of the page:
<a href="
http://www.google.com/search?client=fir ... ">Lacrosse ball - Wikipedia, the free encyclopedia</a>
duh3... A lacrosse ball is the solid rubber ball that is used to play the sport of lacrosse. It is typically white, but is also produced in a wide range of colors. It is usually 7.75 to 8 inches (19.7–20.3 cm) in circumference (about 2.5 inches (6.4 cm) in diameter) and weighs 5 to 5.25 ounces (140–150 g).
Average diameter of 2-1/2" SCH40 PVC pipe is 2.445", found by looking up the <a href="
http://www.spudfiles.com/pvc_pipe_info.php">pipe info</a> link, on this site.
A difference of .055", or 0.0275" - all the way around the ball... Tight fit!
Edit: DUH4 <----To ME! (Was so caught-up in my own sarcasm, that I totally forgot my original thought)
Lockedandloaded: Have you ever tried to inject a tennis ball, full of water?
Makes them pretty heavy! About 4 ounces of water, plus the 57 grams, for the tennis ball, itself... about 6 oz.
Heavier than the lacrosse ball?