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Soda Can Pwnage

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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This is:

The craziest thing i have ever seen!
4
40%
Pretty awsome, but ive seen better
6
60%
Im sorry, but that sucks. i can do that with coke and mentos
0
No votes
Im sorry, but that sucks. i can do that with coke and mentos
0
No votes
 
Total votes : 10
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Soda Can Pwnage

Unread postAuthor: VH_man » Wed Mar 07, 2007 6:23 pm

Well, i didnt know where to put this, but i shot it with a homade airsoft gun, so ill post it here.

This is what happens when you shoot a full seltzer can with a .12g airsoft bb at around 950 FPS../....

http://www.putfile.com/pic.php?img=4930012

I think what happened was the BB caused an agitation of the CO2 when it entered the liquid, and its like the coke+mentos thing, exept with a high-speed BB. i have a feeling the faster the BB goes the more BAM i get. expect a slow-mo video of this happening sometime within the next month.......
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Unread postAuthor: jrrdw » Wed Mar 07, 2007 6:41 pm

You need to get the video up. That just looks like a can with a big hole in it, i'll save my vote for the video.
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Unread postAuthor: risto » Wed Mar 07, 2007 6:57 pm

if one airsoft bb did that, than it is impressive!

but like jrrdw, i will hold my vote until i get a video.
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Unread postAuthor: VH_man » Thu Mar 08, 2007 6:43 am

Yep, that was ONE airsoft bb. it left a small dent on the other side also!
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Unread postAuthor: Brooner115 » Wed Mar 14, 2007 7:48 pm

What gun did u use, 950 fps? i dont know about that please tell me wat u used and if its home made please tell me how to make one THANX :lol:
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Unread postAuthor: VH_man » Wed Mar 14, 2007 8:30 pm

PEX tubing, a small air chamber and a modded 3/4 inch sprinkler valve. the barrel is 30 inches in lenght. the only reason i havent posted one is becuase its quite ghetto........ in fact VERY ghetto. and no offense, but i dont like everyone seeing my ghettoness.
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Unread postAuthor: judgment_arms » Wed Mar 14, 2007 8:31 pm

You’re over complicating it, shake up a can then open it what happens? It spews Coke everywhere. When the projectile, a softair BB in this case, hits the can it’s like shaking the can, then when the round punctures it’s like opening it. The hole is from explosive depressurization. Shoot a Coke can full of water with a .22lr, it’ll shred the can, but that’s kinetic energy, think of it as “wound cavity”.
If I’m wrong sorry.
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Unread postAuthor: VH_man » Thu Mar 15, 2007 12:11 pm

Yeah, its like the mythbusters episode where they used the small bomb to blow up halph the airplane........ do you think a higher FPS will cause a bigger rip? ive had some that ripped the sides of the can clean off the top and bottom............ but that was with a .177 cal 1500 FPS airgun.........
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Unread postAuthor: judgment_arms » Thu Mar 15, 2007 1:05 pm

Yes, the high the velocity the bigger the wound cavity, the wound cavity crates pressure and the only way for it to go is through the can, in some cases taking the wall with it.
Shoot a Coke can full of water with a .22high-velocity short and it will look like the pic of the Coke can shot by the airsoft BB, shoot it with a .22lr and it will detonate, like it did with your magnum springer, I’m assuming it’s ether a magnum springer or a pre-charge pneumatic, shoot the can with a .17HMR and there’ll be no can, shooting cans is about the only use for the .17HMR.
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Unread postAuthor: lukemc » Thu Mar 15, 2007 1:36 pm

you have to post that gun or at least a video. if it was home made how did you know the FPS?
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Unread postAuthor: spudthug » Thu Mar 15, 2007 4:05 pm

ooh wow.....if that is made by an airsoft gun (if) then i dont wanna be ur enemy...
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Unread postAuthor: spudthug » Thu Mar 15, 2007 4:05 pm

srry for double post but i really want to see the vid or gun...or both...my edit button didnt work btw...computer sucks
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Unread postAuthor: VH_man » Thu Mar 15, 2007 6:04 pm

The vid is coming..... got 3 papers due tomorrow. and i know the FPS because i 1. used GGDT and 2. used my homade chronograph (pretty schweet)
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Unread postAuthor: jackssmirkingrevenge » Sat Mar 17, 2007 5:28 am

This diagram explains the mechanism of what happenens in this scenario, with the incompressible fluid in the can being displaced by the projectile's shockwave.

Image

You can see this effect
here on a coffee tin filled with water, the force of the pressure wave blows the lid off.
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Unread postAuthor: chaos » Sat Mar 17, 2007 5:30 am

Holy crap nice diagram Image

im gonna shoot a full unopened shaken up coke can 2moz and ill film it


peace
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