My QEV copper cannon

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
spanerman
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made some impovements today...
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Kenny_McCormic
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thats a nice gun but id take it to 200 psi
spanerman
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id take it to 23kpa if i had a pump that would do it
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joannaardway
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I think you mean 2300kPa.

23kPa is almost nothing.
Novacastrian: How about use whatever the heck you can get your hands on?
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...I'm sorry, but that made my year.
spanerman
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yes i do, or 0.23MPa, my bad
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MrCrowley
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100kpa = 1BAR
1MPa = 10BAR
700Kpa = 100PSI(Roughly)
7BAR = 100PSI(Roughly)
10BAR/1MPa = 145PSI
23Kpa = Jack sh*t :P
spanerman
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yeah, my statement was correct :P id feel happy taking it to 250psi
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joannaardway
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That would be 2.3 mPa.

Again, .23 mPa isn't a lot (about 30 psi.)
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.
spanerman
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damn, got it wrong again. runs off to physics folder.
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chaos
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man whats the c:b ratio on this thing?

have you considered using a blowgun for the trigger?
spanerman
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i have considerd a blowgun, i have used one, the perfomance suffers as the flow rate is so small, there is about a 1:1 ratio
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jackssmirkingrevenge
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spanerman wrote:id take it to 23kpa (edit: for which read 250 psi :P) if i had a pump that would do it
If you don't mind the effort, you can get yourself a mountain bike shock pump relatively cheaply, it'll be low volume so pumping up might take a while (I suggest you use your compressor first then top up with the shock pump) but the performance increase for specific targets is more than worth the effort :D
Last edited by jackssmirkingrevenge on Mon Apr 02, 2007 6:24 am, edited 1 time in total.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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MrCrowley
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Pretty sure it wouldn't take long to get to 23kPa :wink:
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joannaardway
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Hmm, you could probably get 23 kPa from a balloon pump.
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.
spanerman
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28mm!!!!
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should be solderd today
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