Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
-
paaiyan
- First Sergeant
![First Sergeant First Sergeant](./images/ranks/25_firstsergeant.png)
- Posts: 2140
- Joined: Wed Dec 27, 2006 10:03 pm
- Location: Central Oklahoma
- Been thanked: 1 time
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.
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
-
joannaardway
- Corporal 5
![Corporal 5 Corporal 5](./images/ranks/14_corporal5.png)
- Posts: 949
- Joined: Mon Oct 09, 2006 4:57 pm
- Location: SW Hertfordshire, England, UK.
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*
Novacastrian: How about use whatever the heck you can get your hands on?
frankrede: Well then I guess it won't matter when you decide to drink bleach because your out of kool-aid.
...I'm sorry, but that made my year.
-
paaiyan
- First Sergeant
![First Sergeant First Sergeant](./images/ranks/25_firstsergeant.png)
- Posts: 2140
- Joined: Wed Dec 27, 2006 10:03 pm
- Location: Central Oklahoma
- Been thanked: 1 time
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.
-
lukemc
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 565
- Joined: Sun Feb 25, 2007 8:48 am
- Location: NY
Fri Jul 06, 2007 3:28 pm
o comon now im curious
"Those who are different change the world. Those who are the same keep it that way"
-
rednecktatertosser
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 590
- Joined: Tue May 22, 2007 7:52 pm
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?
"When you tell some body something, it depends on which part of these United States your standing in, as to how dumb you sound."
-Burt Reynolds as: Bo "Bandit" Darville
-
Acdcmonkey1991
- Specialist 3
![Specialist 3 Specialist 3](./images/ranks/8_specialist3.png)
- Posts: 386
- Joined: Fri Mar 30, 2007 3:33 pm
- Location: Florida
Fri Jul 06, 2007 9:48 pm
That actually is a good theory...
VH was awesome!!
Current projects:
C02 Jetpack (CIIJ)
Waterjet vehicle
.177 cal. piston rifle
-
rednecktatertosser
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 590
- Joined: Tue May 22, 2007 7:52 pm
Fri Jul 06, 2007 9:51 pm
Thanks, I have been thinking about it since i watched that episode.
"When you tell some body something, it depends on which part of these United States your standing in, as to how dumb you sound."
-Burt Reynolds as: Bo "Bandit" Darville
-
mark0491
- Private 4
![Private 4 Private 4](./images/ranks/5_private4.png)
- Posts: 80
- Joined: Sat Jun 23, 2007 6:49 pm
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.
-
rednecktatertosser
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 590
- Joined: Tue May 22, 2007 7:52 pm
Fri Jul 06, 2007 10:13 pm
I dont think steam would be enough heat to melt lead.
"When you tell some body something, it depends on which part of these United States your standing in, as to how dumb you sound."
-Burt Reynolds as: Bo "Bandit" Darville
-
Modderxtrordanare
- Corporal 2
![Corporal 2 Corporal 2](./images/ranks/11_corporal2.png)
- Posts: 686
- Joined: Mon Nov 20, 2006 1:22 pm
- Location: Texas
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 :wink:](./images/smilies/icon_e_wink.png)
)
-
rednecktatertosser
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 590
- Joined: Tue May 22, 2007 7:52 pm
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 :wink:](./images/smilies/icon_e_wink.png)
"When you tell some body something, it depends on which part of these United States your standing in, as to how dumb you sound."
-Burt Reynolds as: Bo "Bandit" Darville
-
paaiyan
- First Sergeant
![First Sergeant First Sergeant](./images/ranks/25_firstsergeant.png)
- Posts: 2140
- Joined: Wed Dec 27, 2006 10:03 pm
- Location: Central Oklahoma
- Been thanked: 1 time
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 :wink:](./images/smilies/icon_e_wink.png)
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.
-
clide
- Corporal 3
![Corporal 3 Corporal 3](./images/ranks/12_corporal3.png)
- Posts: 784
- Joined: Sun Mar 06, 2005 3:06 am
- Location: Oklahoma, USA
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 :wink:](./images/smilies/icon_e_wink.png)
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.
-
Modderxtrordanare
- Corporal 2
![Corporal 2 Corporal 2](./images/ranks/11_corporal2.png)
- Posts: 686
- Joined: Mon Nov 20, 2006 1:22 pm
- Location: Texas
Sat Jul 07, 2007 2:25 am
Joann, isn't this forum all about sharing?
All of us are curious, and if you are really concerened with saftey, PMing or instant messaging (AIM, MSN, etc..) people would still work.