Mini pengun

[fenrir]

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.

[Gun Freak]

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

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

[jackssmirkingrevenge]

Nice first effort

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

[fenrir]

Update: Well, it developed a leak (must be the poorly mixed epoxy) so I drilled it out. How do you reinforce the breech?

[jackssmirkingrevenge]

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.