Quote:
Originally Posted by Sperkowsky
well of course it eventually exploded. It has a closed front. Our launcher barrel would obviously be open.
Also dropping a weight over and over again from 12 feet would damage anything.
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Please read
This paying attention to the failure modes and summary.
here is another website stating not to use PVC with pressurized gasses.
and
here's OSHA telling you not to do it.
Oh, and BTW,your cannon barrel is NOT open as you have a t-shirt inside that is acting as the restricting orifice that allows the pressure to build up behind it ... which is why the t-shirt flies out.
One last thing. I happen to be someone who has had a 1 liter volume, made of PVC, with 100 PSI inside of it blow up less than 2 feet from me. There was no warning of the impending explosion. The only reason I am here to talk about it is that it happened to blow out the opposite direction. I am one who knows what the failure mode is like (back then I didn't, and I'm lucky my ignorance wasn't fatal). So when I say don't use PVC for pressurized gasses I know what I'm talking about.