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Compact Copper Piston Gun

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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Compact Copper Piston Gun

Unread postAuthor: Infernal Maveric » Sun Jul 08, 2007 4:33 pm

This gun has finally been finished after ALOT of tweaking and alterations. The piston wouldn't seat properly, then the spring would be too tight so it wouldn't let it exhaust. Today I decided to move the Scharder from the endcap at the bottom to behind the piston to eliminate the problem of the damned spring.

Specs:

Barrel: 15mm copper
Chamber: 22mm copper
Valve: Barrel sealing piston (home made)
Exhaust/trigger: 150PSI pop-off valve

I know the bottom part of the chamber is a little crooked, but I don't care.
Image

The fill/exhaust end of the gun. It was a pain in the rectal cavity to get that scharder where it is whilst still allowing servicing of the piston.
Image

I will get some damage pictures taken tomorrow, but this thing packs a punch.

Comments/suggestions welcome.
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Unread postAuthor: Modderxtrordanare » Sun Jul 08, 2007 5:08 pm

Amazing, other than the crooked chamber, but that's nothing a chamber support cant fix.

Good work, can't wait to see more of your cannons. :)
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Unread postAuthor: Infernal Maveric » Sun Jul 08, 2007 5:13 pm

Thanks. I will either shorten the chamber down a bit or re solder the 2 elbows to get the chamber looking more level.

I will get a picture up of the piston tomorrow if anyone wants to see it.
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Re: Compact Copper Piston Gun

Unread postAuthor: Pyro Ninja » Sun Jul 08, 2007 8:11 pm

It was a pain in the rectal cavity...haha....nice little gun.. :) ......
...my quoting button has stoped working ........ I highlight a sentence that I want to quote...click quote....then it quotes every word the person wrote :? .........
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Unread postAuthor: origin unknown » Sun Jul 08, 2007 9:18 pm

Cool piston gun. I like your pop-off pilot alot! :D
Have you shot the gun yet? If so, how far or hard does it shoot?
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Unread postAuthor: noname » Sun Jul 08, 2007 10:00 pm

How could you not give any credit to Saladtossser for the design?
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Unread postAuthor: Hotwired » Sun Jul 08, 2007 10:30 pm

Infernal Maveric had this design since last year...

Anyway, glad to see you've finally got round to making it :)
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Unread postAuthor: noname » Sun Jul 08, 2007 10:34 pm

Saladtossser made this cannon from PVC about 3 years ago....
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Unread postAuthor: origin unknown » Sun Jul 08, 2007 11:26 pm

From PVC not copper... but ya, it is still the similar design.
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Unread postAuthor: Infernal Maveric » Mon Jul 09, 2007 1:15 am

In my other topic I have SaladT full credit for the design.

I have shot this gun dry and with some BB buckshot, and I can tell you that this little thing is powerful! I can get BBs to fly across my garden (about 25m) and I'm pretty sure that that I chould get a dart a 100m or so.
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Unread postAuthor: PVC Arsenal 17 » Mon Jul 09, 2007 10:50 am

noname wrote:How could you not give any credit to Saladtossser for the design?


I was going to say the exact same thing. Looks like his but copper.
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Unread postAuthor: Infernal Maveric » Mon Jul 09, 2007 2:44 pm

The reason I didn't credit ST is because I have full credit to him in my old topic on a simmaler gun ages ago. but if it is SO requested, i will give credit to him to stop the whining.
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Unread postAuthor: spud yeti » Tue Jul 10, 2007 3:35 am

If you have to give credit to anyone that has built a similar cannon, the lists would be endless... And Im pretty sure STs cannon isnt 100% original (if it is, well done on inventing PVC, and the piston!)
Who cares anyways?
Nice cannon, and well done!
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really good quote/phrase here
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Unread postAuthor: Infernal Maveric » Tue Jul 10, 2007 3:49 pm

Thanks Yeti.

I was shooting this thing out in the garden today. found out that my bike pump is broken and pumps up to 50PSI only. Used my shock pump instead to get to 150PSI exactly. HUGE report and a big amount of kick. supriseingly (sp?), even without a spring/bumper, the piston is still intact =)
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Unread postAuthor: PVC Arsenal 17 » Tue Jul 10, 2007 8:29 pm

I'm not whining. This site exists so people can share ideas and stuff. ST made something cool, and you followed in his path. Good for you, you made an awesome gun.
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