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How To: Know When Your Soda Bottle Chamber Is About To Blow

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: MrCrowley » Sat Jan 17, 2009 3:38 pm

Why would they remove his big toe? Isn't your big toe critical to the magical balancing art of standing up straight without falling over or something like that?
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Unread postAuthor: sputnick » Sat Jan 17, 2009 3:40 pm

thats what I was thinking, and besides, drano bombs dont actually explode so much as pop, they tear the bottle eventually, and make it fly away, theres never any actual damage done to anything.
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Unread postAuthor: POLAND_SPUD » Sat Jan 17, 2009 3:51 pm

It is particularly stupid to build drano bombs becasue they are filled with some sh** used to drain pipes... not because they explode (but yeah that's also dangerous)
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Unread postAuthor: jeepkahn » Sat Jan 17, 2009 3:53 pm

sputnick wrote:thats what I was thinking, and besides, drano bombs dont actually explode so much as pop, they tear the bottle eventually, and make it fly away, theres never any actual damage done to anything.


Explode=to violently release stored energy

pop,'splode, tomato, tomoto.....
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Unread postAuthor: sputnick » Sat Jan 17, 2009 3:54 pm

Yes, I agree, the stuff in drano is EXTREMELY bad for you, we always threw the bottles far away and didn't go near the area for a good few minutes untill all the fumes had drifted away, but it stands that chemicals aren't going to blow your thumb off, at worst, the explosion could propel the contents towards you, giving you chemical burns.
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Unread postAuthor: MrCrowley » Sat Jan 17, 2009 4:02 pm

but it stands that chemicals aren't going to blow your thumb off, at worst, the explosion could propel the contents towards you, giving you chemical burns.

Did you think that maybe it went off in his hands? I've seend dry ice bombs cut peoples hands open. If these drano bombs release a similar amount of energy, I could see them cutting open someones thumb pretty bad, probably not through the bone, but enought to do a lot of tissue damage.
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Unread postAuthor: sputnick » Sat Jan 17, 2009 4:06 pm

Yea, I'm pretty sure it's about the same amount of energy, and if not in his hands, then I do not know where it would be, in such a way as to "blow his thumb off" maybe in some freak scenario, but drano bombs and dry ice bombs are similar, since both burst at the point where a bottle fails... then all energy created after that is not important, since all pressures go straight to the atmosphere.


EDIT: I looked back at his post, and he is speaking of BLEACH bombs, I did not know what those were, so I looked them up, They involve 1: GASOLINE 2: BLEACh 3: A GLASS JAR...

clearly we are talking about varying levels of explosives....
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Unread postAuthor: Daltonultra » Sat Jan 17, 2009 4:36 pm

MrCrowley wrote:Why would they remove his big toe? Isn't your big toe critical to the magical balancing art of standing up straight without falling over or something like that?

It helps alot, but isn't critical. He walks just fine, maybe a trace of a limp last time I saw him, but what's that compared to losing the thumb on your dominant hand?(BTW, it was a fairly common practice, in the dark days of slavery, to cut off the toes of a repeat-runaway slave. It made it almost impossible to move quickly, but they usually recovered well enough to work in fields on uneven ground.) He was placing the bottle in a mailbox when it went off, which probably contributed to it blowing his thumb off, but even without being half enclosed, a plastic bottle has enough energy in it to do serious damage, and when you combine that with splattering everything in the vicinity with toxic and even corrosive chemicals, it elevates the whole proceeding into the realm of the monumentally stupid.
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Unread postAuthor: POLAND_SPUD » Sat Jan 17, 2009 4:37 pm

but drano bombs and dry ice bombs are similar, since both burst at the point where a bottle fails...
and
I've seend dry ice bombs cut peoples hands open
and add this to it
but it stands that chemicals aren't going to blow your thumb off, at worst, the explosion could propel the contents towards you, giving you chemical burns.


If after reading these quotes you don't get why drano bombs are more dangerous than ice bombs then I don't know what is wrong with you

seriously do you expect that everyone one this site always use eye protection ? don't count on that... so DO NOT write about drano bombs here...

even if you use eye protection (doubt it's true if you can't understand why drano bombs are inherently more dangerous than dry ice bombs) you never know who is going to read it and what he is going to do with this knowledge....
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Unread postAuthor: Daltonultra » Sat Jan 17, 2009 4:39 pm

sputnick wrote:Yea, I'm pretty sure it's about the same amount of energy, and if not in his hands, then I do not know where it would be, in such a way as to "blow his thumb off" maybe in some freak scenario, but drano bombs and dry ice bombs are similar, since both burst at the point where a bottle fails... then all energy created after that is not important, since all pressures go straight to the atmosphere.


EDIT: I looked back at his post, and he is speaking of BLEACH bombs, I did not know what those were, so I looked them up, They involve 1: GASOLINE 2: BLEACh 3: A GLASS JAR...

clearly we are talking about varying levels of explosives....


Nope. Plastic bottle, bleach tablets, and some other ingredients. It's a pressure bomb, not an explosive. I do know of the bleach/gas/etc combo, but that's not what he was doing.
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Unread postAuthor: jeepkahn » Sat Jan 17, 2009 4:48 pm

Daltonultra wrote:
sputnick wrote:Yea, I'm pretty sure it's about the same amount of energy, and if not in his hands, then I do not know where it would be, in such a way as to "blow his thumb off" maybe in some freak scenario, but drano bombs and dry ice bombs are similar, since both burst at the point where a bottle fails... then all energy created after that is not important, since all pressures go straight to the atmosphere.


EDIT: I looked back at his post, and he is speaking of BLEACH bombs, I did not know what those were, so I looked them up, They involve 1: GASOLINE 2: BLEACh 3: A GLASS JAR...

clearly we are talking about varying levels of explosives....


Nope. Plastic bottle, bleach tablets, and some other ingredients. It's a pressure bomb, not an explosive. I do know of the bleach/gas/etc combo, but that's not what he was doing.


akybray uidflay..... For those fluent in pig latin.... and it gets hot enough to start fires when mixed with the previously mentioned chemicals...
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Unread postAuthor: jonnyboy » Sat Jan 17, 2009 4:55 pm

That's some nice footage.
How are you liking that new camera?

They did this on the show "time warp" with three taped together. They put it in a fish tank and the shock wave shattered the glass. I guess you could use this as a "depth charge" for fishing scratch that, redneck fishing.
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mobile chernobyl wrote:I can shoot a Canuter Valve off my '82 Chevy Ram F150 AT LEAST 3/4 Mile with 'ma cannon made of soup cans duct taped together, then I just squirt some bacardi 151 in the chamber and hold up my cigarrete lighta and WHOOSH! That thing flies at least 3/4 mile
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Unread postAuthor: MrCrowley » Sat Jan 17, 2009 6:10 pm

That's some nice footage.
How are you liking that new camera

Camera is working out pretty good, I had to use digital zoom when editing the video because I had placed the camera so far away as I didn't want it to get hit by a flying bottle :)

But next time i'll place it closer and use optical zoom.
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Unread postAuthor: jonnyboy » Sat Jan 17, 2009 7:25 pm

You could make a plexiglass box for your camera so you don't have to worry about shrapnel.
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mobile chernobyl wrote:I can shoot a Canuter Valve off my '82 Chevy Ram F150 AT LEAST 3/4 Mile with 'ma cannon made of soup cans duct taped together, then I just squirt some bacardi 151 in the chamber and hold up my cigarrete lighta and WHOOSH! That thing flies at least 3/4 mile
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Unread postAuthor: MrCrowley » Sat Jan 17, 2009 7:28 pm

Yeah but plexiglass is like $30 for a 30cmx30cm square and I don't feel like spending ~$60 on plexiglass when i've got other things that need buying :)
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