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Mythbusters Bird Launcher

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: paaiyan » Fri Jul 06, 2007 2:21 pm

joannaardway wrote:
paaiyan wrote:Yea, I've seen video of some MIT students making a steam cannon better than the mythbusters though, dang it owned. But they said it was so powerful they weren't going to release the inforamtion on how to make it. Oh but it was powerful. I've been trying to figure out how they did it.

I know how they did it - but I'm not going to tell you either, because I'm evil. :twisted:

That, and I want to build one, but my parents certainly wouldn't approve.


I don't think you really know. I bet it's one of the ideas that I thought of and threw out because it sounded stupid. I'd feel like an idiot then.

EDIT: Here's the link, http://web.mit.edu/2.009/www/experiment ... annon.html
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Unread postAuthor: joannaardway » Fri Jul 06, 2007 2:55 pm

I assure you, I do know - but I'm sure that some n00b would read it and kill themselves, so I will remain quiet.
*shifty eyes*
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Unread postAuthor: paaiyan » Fri Jul 06, 2007 3:13 pm

joannaardway wrote:I assure you, I do know - but I'm sure that some n00b would read it and kill themselves, so I will remain quiet.
*shifty eyes*


Private messages work wonders. I actually had a pretty good discussion with my chem teacher once and we came up with one theory, but we couldn't figure out how Archimedes would have contained the pressure till it built up. If I could just figure that part out I'd have it.
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Unread postAuthor: lukemc » Fri Jul 06, 2007 3:28 pm

o comon now im curious
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Unread postAuthor: Jumpin Jehosaphat » Fri Jul 06, 2007 8:30 pm

I applied to MIT and got turned down :cry:
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Unread postAuthor: rednecktatertosser » Fri Jul 06, 2007 9:13 pm

paaiyan wrote:
joannaardway wrote:I assure you, I do know - but I'm sure that some n00b would read it and kill themselves, so I will remain quiet.
*shifty eyes*


Private messages work wonders. I actually had a pretty good discussion with my chem teacher once and we came up with one theory, but we couldn't figure out how Archimedes would have contained the pressure till it built up. If I could just figure that part out I'd have it.


What if Archimedes used some sort of burst disk? maybe 2 peices of wood nailed/pegged togther and using a really thin leather/metal disk?
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Unread postAuthor: Acdcmonkey1991 » Fri Jul 06, 2007 9:48 pm

That actually is a good theory...
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Unread postAuthor: rednecktatertosser » Fri Jul 06, 2007 9:51 pm

Thanks, I have been thinking about it since i watched that episode.
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Unread postAuthor: mark0491 » Fri Jul 06, 2007 9:59 pm

I was thinking he used some sort of a metal chamber with a lead sinker melted into the hole,and when he heated the chamber blam the lead melted.
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Unread postAuthor: rednecktatertosser » Fri Jul 06, 2007 10:13 pm

I dont think steam would be enough heat to melt lead.
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Unread postAuthor: Modderxtrordanare » Fri Jul 06, 2007 10:26 pm

rednecktatertosser wrote:I dont think steam would be enough heat to melt lead.


Lead has a really low melting point, around 600 K. (Since you payed tons of attention in chemistry, you'd know that's around 320 degrees celcius. :wink: )
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Unread postAuthor: rednecktatertosser » Fri Jul 06, 2007 10:32 pm

HAHAHAHA!!!! yeah, but water boils at 212 degrees farenheight (100 degrees celsius(373 K)) see i didnt totally blow off that class :wink:
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Unread postAuthor: paaiyan » Sat Jul 07, 2007 12:06 am

rednecktatertosser wrote:HAHAHAHA!!!! yeah, but water boils at 212 degrees farenheight (100 degrees celsius(373 K)) see i didnt totally blow off that class :wink:


Yea smart one, but the fire is hotter than that. Just because water boils at 212, doesn't mean that the fire is 212. the fire is much hotter than that, hence, the metal is much hotter than that, since the metal is in contact with the lead, the lead melts.
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Unread postAuthor: clide » Sat Jul 07, 2007 2:19 am

rednecktatertosser wrote:HAHAHAHA!!!! yeah, but water boils at 212 degrees farenheight (100 degrees celsius(373 K)) see i didnt totally blow off that class :wink:


But the boiling point also increases as pressure increases.

As for the MIT cannon I think I have an idea of what they did. Here is a tip (if my theory is right), take a look at their projectile and think about why they made it like that.
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Unread postAuthor: Modderxtrordanare » Sat Jul 07, 2007 2:25 am

Joann, isn't this forum all about sharing? :wink:


All of us are curious, and if you are really concerened with saftey, PMing or instant messaging (AIM, MSN, etc..) people would still work.
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