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barrel exploded!

Posted: Wed Sep 03, 2008 5:26 pm
by frankrede
Sgorts mauler valve proved to be too powerful and completely destroyed my tennis ball barrel.
The barrel has a little bit of yellow discoloration from the sun and that is what I say caused it.

The part that interests me most is how it exploded.
the pieces broke apart in a spiral.
and all the pieces are razor sharp, and I managed not to even get a scratch+the tennis ball went through the mdf board I shot at


now heres some pics
<a href="http://s30.photobucket.com/albums/c325/ ... 479844.jpg" target="_blank"><img src="http://i30.photobucket.com/albums/c325/ ... 479844.jpg" border="0" alt="Photobucket"></a>

<a href="http://s30.photobucket.com/albums/c325/ ... 479868.jpg" target="_blank"><img src="http://i30.photobucket.com/albums/c325/ ... 479868.jpg" border="0" alt="Photobucket"></a>

<a href="http://s30.photobucket.com/albums/c325/ ... 479900.jpg" target="_blank"><img src="http://i30.photobucket.com/albums/c325/ ... 479900.jpg" border="0" alt="Photobucket"></a>

<a href="http://s30.photobucket.com/albums/c325/ ... 479908.jpg" target="_blank"><img src="http://i30.photobucket.com/albums/c325/ ... 479908.jpg" border="0" alt="Photobucket"></a>

<a href="http://s30.photobucket.com/albums/c325/ ... 479933.jpg" target="_blank"><img src="http://i30.photobucket.com/albums/c325/ ... 479933.jpg" border="0" alt="Photobucket"></a>

Posted: Wed Sep 03, 2008 5:30 pm
by MaxuS the 2nd
Dang..

Posted: Wed Sep 03, 2008 5:33 pm
by far_cry
and now you have a knife
thats deadly

Posted: Wed Sep 03, 2008 5:38 pm
by Fnord
Your digital camera must be really good, judging by the fact that renders HDR lighting :)


...
If that yellow outside coloring is really sun damage, it is really, REALLY bad. How long has it been sitting in the sun for? I've never seen anything quite that bad before.

Posted: Wed Sep 03, 2008 5:38 pm
by DYI
What are those, pictures of ghosts you saw in your back yard? :lol:

On a more serious note, that's quite an interesting failure you've got there. The propagation patterns might have something to do with the way the tennis ball moves down the barrel, although I don't profess to be an expert on PVC failures.

Good job on not getting injured, but this kind of thing is why the manufacturers warn against using weak, brittle pipes with compressed gases.

Posted: Wed Sep 03, 2008 6:03 pm
by frankrede
_Fnord wrote:Your digital camera must be really good, judging by the fact that renders HDR lighting :)


...
If that yellow outside coloring is really sun damage, it is really, REALLY bad. How long has it been sitting in the sun for? I've never seen anything quite that bad before.
Lol, its a camera phone.
The yellow looks alot worse in the picture, its a lot less dramatic.

I

Posted: Wed Sep 03, 2008 7:12 pm
by potatoflinger
It could also have something to do with tennis balls fitting very tightly in 2.5" pipe. (I'm assuming that it was 2.5", I don't think a 3" would have burst with a tennis ball)

Posted: Thu Sep 04, 2008 12:17 am
by jackssmirkingrevenge
phoar! glad you weren't hurt :shock:

Posted: Thu Sep 04, 2008 12:37 am
by Pilgrimman
It might be a combination of the sun damage and a flexing barrel. It looks like it, anyway... Just glad no one was hurt!

Posted: Thu Sep 04, 2008 1:10 am
by SpudMonster
It's radioactive. Don't worry, it's just fallout from the Nevada Test Site. Nothing to worry about. In fact, the radiation probably superheated the air in the barrel causing it to expand, overpressurize the barrel, and fail.

Posted: Thu Sep 04, 2008 2:05 am
by frankrede
jackssmirkingrevenge wrote:phoar! glad you weren't hurt :shock:
Thanks!
It was quite fun, kind of gave me an adrenaline rush after I realized I survived and wasn't impaled by a piece of pvc.

Posted: Thu Sep 04, 2008 10:30 am
by starman
Some of those photos make the pieces look like they have died and gone to heaven, with their angelic glow...:wink:

I'm glad you didn't get injured.

zow!

Posted: Thu Sep 04, 2008 11:23 am
by Solar
The remains remind me of some kind of wicked flamberge blade. All wavy and lethal.

http://images.search.yahoo.com/images/v ... k8f5o1[url][/url]

Posted: Thu Sep 04, 2008 11:31 am
by jimmy101
frankrede: glad you've still got all your body parts (and no new parts).

What was the chamber pressure?

Posted: Thu Sep 04, 2008 5:57 pm
by frankrede
chamber pressure 100 psi