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Mini pengun

Built a miniature 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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Mini pengun

Unread postAuthor: fenrir » Tue Jul 30, 2013 11:40 am

Hi everyone! I've been a lurker and might as well post something. :) This is a mini coax based on jor2daje's pengun. It has a solid rubber piston, 1/8 brass tubing for the barrel and 7/32 for the chamber. I don't have a shock pump, so it is crap at 160 psi. Btw it's my first build and I'm surprised that it actually works. :D
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Unread postAuthor: Gun Freak » Tue Jul 30, 2013 11:52 am

Looking good! Penguns are fun, especially with >400 psi :wink:

You clearly did your research on this one. Congratulations on getting it working. Welcome to SpudFiles :occasion5:
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Re: Mini pengun

Unread postAuthor: jackssmirkingrevenge » Tue Jul 30, 2013 11:55 am

Nice first effort :)

fenrir wrote:I don't have a shock pump, so it is crap at 160 psi.


Probably just as well, if the breech isn't reinforced the piston will probably dig into it.

Have a read through this thread: http://www.spudfiles.com/forums/pneumat ... t7858.html
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Unread postAuthor: fenrir » Mon Aug 26, 2013 10:51 am

Update: Well, it developed a leak (must be the poorly mixed epoxy) so I drilled it out. How do you reinforce the breech?
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Unread postAuthor: jackssmirkingrevenge » Mon Aug 26, 2013 11:45 am

See if you can find some tube that slips over the end of the barrel, basically what you want to do is spread the contact area between breech and piston.
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