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Ondskehems All metall Springloaded ballvalve-rifle.

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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Ondskehems All metall Springloaded ballvalve-rifle.

Unread postAuthor: ondskehem » Sun Jul 13, 2008 1:57 am

Hi all.

This is a project that i finished some time ago.

Its a springloaded ballvalve pneumatic airgun, wich fires by a push of the trigger.

I load it with about 8Bar, that equals 116PSI.

It's quit powerful, and distinct.

the pipe is shiny-chrome copper-pipe and the rest is some scrap metal i found at home.

well, hit me with your thoughts, but please spare me the "give it a paintjob" comments, I do can count that out myself.
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Attachments
bipods.jpg
the bipods!
full img.jpg
the full gun
mekkanixs.jpg
the grinds and gears of this machine

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Unread postAuthor: Hubb » Sun Jul 13, 2008 2:21 am

Very nice. It would probably look even better with a stock on it.

If possible, you should take the pressure higher. Also, some damage pics would be nice.
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Unread postAuthor: Xerxys » Sun Jul 13, 2008 3:06 am

Cool, is that just regular copper pipe? Nice scope, what is the accuracy like
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Unread postAuthor: starman » Sun Jul 13, 2008 3:11 am

That's one heck of a screen door spring you have there...it is a unique feature however...maybe a little out-of-place looking....maybe you could hide it inside another pipe there.

Otherwise, looks like clean and solid construction.
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Unread postAuthor: pizlo » Sun Jul 13, 2008 7:36 am

Amazingly nice construction!. I started work on a springoaded ball valve gun. Better stock, everything else is crudier:( I've had a lot of trouble getting the springloaded set up right.
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Unread postAuthor: POLAND_SPUD » Sun Jul 13, 2008 9:50 am

hey that really good looking gun - it seems that it can take 300 psi easily

in case you want to improve performance consider buying a QEV valve
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Unread postAuthor: pizlo » Sun Jul 13, 2008 10:52 am

With that spring I bet the valve is opened to full barrel diameter in less than 10 milliseconds.
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Unread postAuthor: trollhameran » Sun Jul 13, 2008 11:16 am

That is a very similar spring loaded setup to the one i used on a cannon I posted a while ago, it does improve the power over just a ball valve incredibly, the only difference to mine is the trigger setup and the type of spring.
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Unread postAuthor: ondskehem » Sun Jul 13, 2008 2:16 pm

pizlo wrote:With that spring I bet the valve is opened to full barrel diameter in less than 10 milliseconds.


-Yes, it´s a quick and distinct opening of the valve.


POLAND_SPUD; Yes i know. I just haven't made my self a proper shockpump yet :).

starman: i like the exposed spring, i mean, in this case it does a lot to the appearance in a good manner i think.

hubb017: yes, perhapse.
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Unread postAuthor: blind909 » Sun Jul 13, 2008 10:11 pm

Nice gun, but I do agree, make a stock, and how is the accuracy.
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Unread postAuthor: ondskehem » Mon Jul 14, 2008 5:41 am

the accuracy is pretty good. But a huge setback is that i don´t have any good type of ammo. I have though of crafting some slugs but i haven't tried it yet.
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Unread postAuthor: jackssmirkingrevenge » Mon Jul 14, 2008 6:50 am

nice, could use a paintjob though :P :D
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Unread postAuthor: ondskehem » Mon Jul 14, 2008 12:04 pm

jackssmirkingrevenge wrote:nice, could use a paintjob though :P :D


lol... :)
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Unread postAuthor: blind909 » Mon Jul 14, 2008 8:45 pm

Im sorry if this has been asked B-4, but what is your handle made of?
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Unread postAuthor: ondskehem » Tue Jul 15, 2008 6:16 am

blind909 wrote:Im sorry if this has been asked B-4, but what is your handle made of?



its made from steel pipes, and square pipes. all welded together.
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