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pneumatic chamber / barrel ratio

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pneumatic chamber / barrel ratio

Unread postAuthor: dart guy » Sat Oct 12, 2013 8:04 pm

i just thought about this but has anyone ever checked if the chamber/barrel ratio ever mattered? i looked at some old mini's and i thought about that because if the volume of the barrel is bigger than the chamber then the projectile wont have a high enough velocity/mass ratio to do significant damage. i'm thinking of building a pengun or a coaxal just for some portable fun :twisted:
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Re: pneumatic chamber / barrel ratio

Unread postAuthor: Technician1002 » Sat Oct 12, 2013 8:22 pm

Yes it matters. Google Gas Gun Design Tool (GGDT) and play with hypothetical cannons to fine tune your design before building it.
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Re: pneumatic chamber / barrel ratio

Unread postAuthor: jrrdw » Sun Oct 13, 2013 6:50 am

Technician1002 wrote:Yes it matters. Google Gas Gun Design Tool (GGDT) and play with hypothetical cannons to fine tune your design before building it.


Goooooooood plan! :D
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Re: pneumatic chamber / barrel ratio

Unread postAuthor: dart guy » Sun Oct 13, 2013 12:50 pm

How do you get into the ggdt, and i am gonna build a coaxial to you all stop with your complaint that i havent built anythin. :D
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Re: pneumatic chamber / barrel ratio

Unread postAuthor: jrrdw » Sun Oct 13, 2013 1:22 pm

Here, maybe this will help you finaly build something: http://www.spudfiles.com/spud-cannon-related/topic13096.html
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Re: pneumatic chamber / barrel ratio

Unread postAuthor: dart guy » Sun Oct 13, 2013 6:09 pm

thanks link is bookmarked
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