My teacher in metals class in high school back in 1968 did the same thing. It blew 2 windows out of the classroom. Needless to say, he was never allowed to show that experiment ever again.
my metal shop teacher in high school did the same thing in 2015, first filling a balloon with just acetylene and lighting it, then filling a balloon with oxy-acetylene and lighting it. The first one was loud, the second one had teachers from the neighboring buildings complaining about rattling windows.
I think i'm going to buy 2 sets x flashback arrestors, at the torch and regulators. That was experiment with 1g, and in practice, one D size tank of acetylene is 3L (liters, sorry I'm a metric guy), which is like 3kg (3000g).
@@gerjaison I use 70+ kg oxygen acetylene bottles . A company called BOC deliver them to use . We return the bottles for new refilled ones. I work as a industrial plumber and we move them around on a trolly when welding . But not uncommon would you find us lugging them up stairs or down downstairs.... heavy aul boys
especially if! without something that smells awful. If it mixes with other things those things cam go kaboom ala the video. lol most people go oh xyz is harmless. Yeah till it mixes and plays with other things!
I seen an oxy/acetylene bomb on Davesfarm back in the day in a grocery bag. It exploded all the way down the driveway and it was so loud it really startled me. He lit a torch, mixed it perfectly then snuffed it out and filled the bag.
Brother .. we filled up condome with acetylene .. full to the brim in our welding shop ... all windows went south when it blow up ... Shop shaked how loud it was ... our neighbours called a police on us .. they tought we throw a grenade in a shop... lol
My father and I did this in our backyard not knowing how violent the explosion would be. We had recently acquired an oxy!-acetylene setup and I just happened to find a balloon and wondered if it would make a cool fireball or something. I must have gotten the perfect stoichiometric mix in that balloon (fully inflated) because when I touched the flame to it using a long stick it created the brightest, most violent explosion I've witnessed. We didn't have hearing protection on and both of us could barely hear afterwards. Knocked pictures off the wall in the house and multiple neighbors came outside. We had to go around apologizing to everyone, it was quite the event. Eventually I ended up joining the military. I've used hand grenades, c4, claymores, witnessed mortar rounds, and airstrikes. Those explosions might have been big, but none were quite as instantaneous and intense as that oxy acetylene. I'd say that balloon had the same explosive energy as a hand grenade, just without the shrapnel to injur us. Would recommend 10/10 great memory
My father runs a buisness in which acetylene is frequently used for welding purposes, and on occasions we use it in the same way shown in the experiment, a little bit of gas and whole lot of oxygen and when it explodes it trembles the whole neighbourhood 😂😂
How did you get here? It's 12:37 in the morning and I can't sleep and have work soon but I was laying in be wondering what would happen if I shot a tank of acetylene while it's in a fire
@@johncuervo3019 it would be disappointing. It needs a lot of oxygen at its immediate disposal for there to be a good reaction. A 1:1 mixture in a large garbage bag is enough to shatter windows on my shop when it's still 50' away, and outside I might add.
My guess is he aimed for the stoichiometric mole ratio of 2.5:1 and when measuring he probably eyeballed it by the size of the balloon after figuring out what the mole ratio translates to in terms of volume.
The correct ratio is easy to find. Using a welding tip (single hole, not a cutting torch), light it and adjust to a neutral flame, which produces the optimal and hottest flame, thereby, giving you the perfect ratio. Not sure of the scientific or fancy names, but this works. I learned this in 1987 when I went to a VoTech school for welding. We had a rep from one of the torch companies show us the difference between Oxygen, acetylene, and both mixed. The O2 balloon popped....boring. The acetylene made a little boom with black smoke....pretty cool. The oxy/acetylene balloon was 1/2 the volume of the first 2 and it made a helluva BOOM !!! The building superintendent came running and busted through the door....he thought we all got blown up :-D If you try this, make sure there is nothing close....it will cause projectiles to fly at high speeds, causing injuries---Safety first !!!
After some experimentation, i can tell you that you want about 1/3 of a bag of acetylene, and the other 2/3 s oxygen. Too much acetylene and you get a slower orangy looking explosion, but the right amount of oxygen and bloody hell!!
@@TheBigun69 Yes, that's the best way to get the correct mix. It is important to mention that after adjusting the torch the tip is touched to a steel plate to put the fire out without disturbing the mixture settings.
My teacher in metals class in high school back in 1968 did the same thing. It blew 2 windows out of the classroom. Needless to say, he was never allowed to show that experiment ever again.
my metal shop teacher in high school did the same thing in 2015, first filling a balloon with just acetylene and lighting it, then filling a balloon with oxy-acetylene and lighting it. The first one was loud, the second one had teachers from the neighboring buildings complaining about rattling windows.
@@kennandunn7533 What was your shop teacher’s name? An ex shop teacher at my school did the same thing in 2015
I think I’m going to buy flashback arrestors.
TomatheGreek very good idea
I think i'm going to buy 2 sets x flashback arrestors, at the torch and regulators.
That was experiment with 1g, and in practice, one D size tank of acetylene is 3L (liters, sorry I'm a metric guy), which is like 3kg (3000g).
Very smart choice
What kind of janky torch setup did you have without them? I've only seen very sketchy handles sold without flashback arrestors.
@@gerjaison I use 70+ kg oxygen acetylene bottles . A company called BOC deliver them to use . We return the bottles for new refilled ones. I work as a industrial plumber and we move them around on a trolly when welding . But not uncommon would you find us lugging them up stairs or down downstairs.... heavy aul boys
We once mixed two 55-gallon bags of oxygen/acetylene. The flash and explosion were seen and felt Miles away.
Just for fun? Lol
You’re gonna create a black hole.
And this is why I always check the regulator if im even around the acetylene tank
especially if! without something that smells awful. If it mixes with other things those things cam go kaboom ala the video. lol most people go oh xyz is harmless. Yeah till it mixes and plays with other things!
"We should be able to get this thing to do something interesting."
"Interesting" here having the meaning of giving everyone in the room tinnitus.
Tried this at work. It woke up everyone at the scrapyard and left me with ringing ears.
I think i mixed 2.5:1 oxygen to acetylene. Fun stuff.
2.5:1?
@@lurk7967 roughly 2,5 parts oxygen to 1 part of acetylene, tho it was a while ago, it may have been the opposite.
@@overmind06 gotcha I thought you used two double dots for a second mb
Next time try 6 parts oxygen 1 part acetylene ;)
@@NarowAR07 can't do it anymore. my company replaced acetylene with propane :(
I seen an oxy/acetylene bomb on Davesfarm back in the day in a grocery bag. It exploded all the way down the driveway and it was so loud it really startled me. He lit a torch, mixed it perfectly then snuffed it out and filled the bag.
Brother .. we filled up condome with acetylene .. full to the brim in our welding shop ... all windows went south when it blow up ...
Shop shaked how loud it was ... our neighbours called a police on us .. they tought we throw a grenade in a shop... lol
I have no idea how this got into my feed. Fantastic professor!
My father and I did this in our backyard not knowing how violent the explosion would be. We had recently acquired an oxy!-acetylene setup and I just happened to find a balloon and wondered if it would make a cool fireball or something. I must have gotten the perfect stoichiometric mix in that balloon (fully inflated) because when I touched the flame to it using a long stick it created the brightest, most violent explosion I've witnessed. We didn't have hearing protection on and both of us could barely hear afterwards. Knocked pictures off the wall in the house and multiple neighbors came outside. We had to go around apologizing to everyone, it was quite the event.
Eventually I ended up joining the military. I've used hand grenades, c4, claymores, witnessed mortar rounds, and airstrikes. Those explosions might have been big, but none were quite as instantaneous and intense as that oxy acetylene. I'd say that balloon had the same explosive energy as a hand grenade, just without the shrapnel to injur us.
Would recommend 10/10 great memory
My first impression... if his mix is good that is a pretty big balloon for a classroom
Lecture classroom, so probably 150-200 seats here. Larger ones have up to 500
Try a mattress bag on a beach here in Australia. All I remember is the sand falling and ringing ears.
haha so aussie ay bro
lol 😂 oh shit! what were you doing? and did you does what ever that was? and was the explosion at least bad ass?
@@gorkskoal9315 "Sand falling" is enough to let you know, it was indeed.
Great teacher, captures your interest and explains easily why this occurs. Nothing like a live demonstration to pique some interest.
As a business major I am reconsidering
Homie in the front row got up and moved 🤣 smart dude.
the person sitting closest just had their face blown off
Not doing these in school anymore.
My father runs a buisness in which acetylene is frequently used for welding purposes, and on occasions we use it in the same way shown in the experiment, a little bit of gas and whole lot of oxygen and when it explodes it trembles the whole neighbourhood 😂😂
CHCH and oxygen is a powerfully explosive gas, nice demonstration. This professor is awesome guy with great sense of humor👏
hope my teachers would do such demonstrations
Gee, if they had demos like that at Carleton when I was there, I wouldn't have dropped out.
I did this with a 1 quart ziplock bag! Neighbor lady came out and asked what hit her house!
0:58 no no no
Acetylene + oxygen = BOOM
*B O O M*
Very interesting. Thanks for uploading. :)
Don't use a hydraulic press.
Based Professor
The way he explains an acetylene flame oxidizing is funny to me.
I did this as a kid, in a Coke bottle with the top cut off. It sounded like a gun shot.
which of your teacher put this video in a task as well?
Half a gram is half a liter?
How did you get here? It's 12:37 in the morning and I can't sleep and have work soon but I was laying in be wondering what would happen if I shot a tank of acetylene while it's in a fire
he meant to say millilitre
Volume
@@johncuervo3019 it would be disappointing. It needs a lot of oxygen at its immediate disposal for there to be a good reaction. A 1:1 mixture in a large garbage bag is enough to shatter windows on my shop when it's still 50' away, and outside I might add.
Indonesian Often Use Carbide To Produce acetylene, (the Calcium Carbide Type)
They Often Use It To Make Cannon's In The ramadhan, LOUD
Was amaizng!
Hey, lets mix 50% acetylene with 50% oxygen in a large kitchen garbage bag and light it. I wonder what would happen?
What was the acetylene/oxy ratio?
for research purposes I guess?
My guess is he aimed for the stoichiometric mole ratio of 2.5:1 and when measuring he probably eyeballed it by the size of the balloon after figuring out what the mole ratio translates to in terms of volume.
The correct ratio is easy to find. Using a welding tip (single hole, not a cutting torch), light it and adjust to a neutral flame, which produces the optimal and hottest flame, thereby, giving you the perfect ratio. Not sure of the scientific or fancy names, but this works. I learned this in 1987 when I went to a VoTech school for welding. We had a rep from one of the torch companies show us the difference between Oxygen, acetylene, and both mixed. The O2 balloon popped....boring. The acetylene made a little boom with black smoke....pretty cool. The oxy/acetylene balloon was 1/2 the volume of the first 2 and it made a helluva BOOM !!! The building superintendent came running and busted through the door....he thought we all got blown up :-D If you try this, make sure there is nothing close....it will cause projectiles to fly at high speeds, causing injuries---Safety first !!!
After some experimentation, i can tell you that you want about 1/3 of a bag of acetylene, and the other 2/3 s oxygen. Too much acetylene and you get a slower orangy looking explosion, but the right amount of oxygen and bloody hell!!
@@TheBigun69 Yes, that's the best way to get the correct mix. It is important to mention that after adjusting the torch the tip is touched to a steel plate to put the fire out without disturbing the mixture settings.
haha, awesome!
At 1:40
Make a potato gun with this stuff
That is called a bomb
This is indeed a bomb! I tried this in high school with my potato cannon and it exploded the chamber! PVC shrapnel shot into my buddies lake behind me
Stick with Aqua-Net!
I wouldn't
legoshi