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can't say
Social climber
Pasadena CA
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Topic Author's Original Post - Oct 7, 2005 - 05:19pm PT
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Who remembers this gem from cold nights around the fire in Josh?
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Shack
Big Wall climber
So. Cal.
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I haven't yet but...
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can't say
Social climber
Pasadena CA
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Topic Author's Reply - Oct 7, 2005 - 05:51pm PT
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oh man, the power of suggestion can be sooo strong. I must resist!!
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JuanDeFuca
Big Wall climber
Chatsworth
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What's it like? What is the pressure of liquid butane?
Juan
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can't say
Social climber
Pasadena CA
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Topic Author's Reply - Oct 7, 2005 - 06:31pm PT
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"What is the pressure of liquid butane?"
Sort of depends on where you're sitting when they huck it in.
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JuanDeFuca
Big Wall climber
Chatsworth
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I think its fairly low.
Sounds interesting will have to try it at next camp fire.
How much energy in a Bic Lighter.
I will drill a hole in one now at lab.
Hold on.
Juan
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Hardman Knott
Gym climber
Straight Outta Squamton
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Knott too long ago, we threw a spent asthma-canister into a campfire.
It made a little "poof", so we threw in another one. This one went "pop",
and was just a little bit louder. So we threw in the remaining dozen or so...
KAAABOOOM!!
4 or 5 of them went off as loud as firecrackers––with HUGE showers of sparks everywhere.
We were running around frantically stamping out the embers which were spread in a 40 foot circle.
My folding camp chair got a couple nice holes burned into it.
What a riot!
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WBraun
climber
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Throw a propane bottle in next time, Hardnman it makes a nice pop too. We once did.
Klaus it was Harpol
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Shack
Big Wall climber
So. Cal.
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The best is an empty or nearly empty can of shaving cream!
or hairspray, or deodorant...any aerosol.
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CorporateDog
climber
Middle California
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Don't know if these nasty things still exist - but in my misspent youth - we would take those little pop top cans of Vienna Sausages and bury them in the coals of fellow camper's firepits.
Took awhile for the steam to build up - but when it did - BAM - little meat byproduct shrapnel all over the place.
Pop top cans of pork and beans worked well too.
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Shack
Big Wall climber
So. Cal.
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Not 100% sure Klaus, just seems to blow up bigger.
My theory...
it's basically the air inside the can that expands to make
the can rupture.
If it's full of shaving cream, there's not enough air to expand.
Once the can is ruptured the leftover propellant in the can
escapes and adds to the boom.
Maybe Ed H. can have the boys at the lab do some experiments and tell us for sure.
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fear
Ice climber
hartford, ct
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Bic lighters are under slight pressure. No biggie though.
The best garage chemical explosion is from a can of Ether. You know, like the old carb/engine starter spray... F*#king enormous blast....
-Fear
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can't say
Social climber
Pasadena CA
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Topic Author's Reply - Oct 7, 2005 - 10:08pm PT
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So, in a best case scenario, what would be the best ammo for a potato cannon?
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Shack
Big Wall climber
So. Cal.
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It's all about the air:fuel ratio...
Starter fluid is my personal favorite.
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Ed Hartouni
Trad climber
Livermore, CA
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all things considered, there are more interesting explosives to play with than Bic lighters... if you like to play with explosives. Doubt that we could generate much interest here.
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prongo
Trad climber
east side kid
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how bout a 5 gallon bottle of propane
just dont stand to close
maybe a 1/4 mile should be safe
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cactus
Trad climber
okanagan
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Flammable substances do not "catalyze" a reaction ... 2 cents from a chem grad.
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hobo
Trad climber
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How to make a bomb, with a pipe, and some gunpowder. Commonly known as a pipe bomb.
Buy some thick pipe, maybe 1/4 inch thick or so. Weld a plate onto the bottom and top. The better the weld, the better the explosion.
Next, drill a small hole in the top, enough to fill w/ gunppowder. Fill it pretty full. Here is where you be careful. No fire or sh#t around, cuz your ass will fill with shrapnel.
Pack the gunpowder with somethin you can fit in the hole. Buy the best epoxy around, and i mean the best. Then, put in a long wick (long is good so you dont die while lighting it), and epoxy the sh#t out of it.
Place it under that huge ass boulder you cant climb, and if your bomb is big enough and built right, voila! No more boulder.
thanks for your attention, i hope it works out.
alex baker
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WBraun
climber
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We did that in Junior high and we dug a deep hole and put that sucker in there. Then we set a gallon of gas on top of it, lit it and ran like hell.
Looked just like in the movies .......Kah boom and a huge fireball.
Good stuff .........
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JuanDeFuca
Big Wall climber
Chatsworth
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You guys are really starting to scare me!
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