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coax handgun

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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coax handgun

Unread postAuthor: ilovefire » Fri Aug 06, 2010 6:09 am

hey this is my second pneumatic, as far as i know it is an original design and have not seen anything like it before hope there isnt any good reason that no one has made one like this would like to know your concerns and or feedback, thanks

sorry about leaving lots out when i posted this hopefully now you can get a better picture of how it works now, still got some stuff to do one the grip befer i get a pic of the whole thing but hopefully i can do that today

[youtube]http://www.youtube.com/watch?v=ppTJ579IR-4[/youtube]
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Attachments
P1140019.jpg
P1140018.jpg
P1140017.jpg
P1140016.jpg
P1140035.jpg
sorry im not that good with computer stuff so i just drew it hope you can tell how it works now
P1140031.jpg
P1140030.jpg
P1140048.jpg
this is the finished gun with detachable copper stock
P1140047.jpg
Last edited by ilovefire on Sat Aug 21, 2010 12:30 am, edited 6 times in total.
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Unread postAuthor: maverik94 » Fri Aug 06, 2010 9:56 am

Nice! Is that your own type of pilot that you built there? I'm a lil confused. i see the schrader...but what is the pipe in front of it for?
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Unread postAuthor: urgle the danish cow » Fri Aug 06, 2010 10:33 am

wow great job. what is the downward pipe for?
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 10:34 am

As confused as the above posters, can we have a diagram of what the inner workings will look like?
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Unread postAuthor: dewey-1 » Fri Aug 06, 2010 10:52 am

I am assuming that is probably the chamber that has another Schrader valve on the bottom for fill purposes.

Need a better overall picture.
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 06, 2010 10:53 am

dewey-1 wrote:I am assuming that is probably the chamber that has another Schrader valve on the bottom for fill purposes.


... but that would make the chamber behind the piston.
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Unread postAuthor: dewey-1 » Fri Aug 06, 2010 11:26 am

Then may be it is just a structural support for it to fit on the handle?

Don't you like speculation and assumptions?
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Unread postAuthor: Gippeto » Fri Aug 06, 2010 11:49 am

You're going to solder the two pipes together? That makes the "downward pipe" the fill.

Excess pilot volume with a tiny pilot valve...might create an issue.
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Unread postAuthor: jor2daje » Fri Aug 06, 2010 12:22 pm

Maybe its a three way valve?
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Unread postAuthor: qwerty » Fri Aug 06, 2010 1:23 pm

I'm pretty sure it's just a tee like thing for the pilot.
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Unread postAuthor: jor2daje » Fri Aug 06, 2010 2:17 pm

well that possible but the idea got me thinking, I dunno if this is the design he is using but it could make for a fairly compact easy to build small calibre three way valve. If you you dont mind about a slight leak into the chamber this could be built with pretty much just telescoping brass tubing and one floating oring.

edit: added slightly better picture
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Unread postAuthor: maverik94 » Sat Aug 07, 2010 7:35 pm

Aha. I understand how it works. very nice!
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Unread postAuthor: ilovefire » Sun Aug 08, 2010 3:13 am

dose anyone know what would be the most psi something of this design could handle? thanks
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Unread postAuthor: qwerty » Sun Aug 08, 2010 5:34 am

It depends on what everything is made of and the quality of build. but by the looks of it maybe 400psi if you're lucky.
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Unread postAuthor: ilovefire » Sun Aug 08, 2010 5:47 am

qwerty wrote:It depends on what everything is made of and the quality of build. but buy the looks of it maybe 400psi if you're lucky.


thanks yea im just not to sure bout that fill tube connection (still not that sure how much punishment epoxy can take) but now you said that, when i get a shock pump it will make me feel a bit better about maybe 300psi (still much better than the 80psi i am limited to atm)
thanks :)
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