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30 bar 435psi pengun

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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30 bar 435psi pengun

Unread postAuthor: DasAbonnent » Sun Sep 14, 2014 4:00 am

Hey,
i want to share one of my projects with you, it's a pengun made out of a ........PEN!
Image


I can pump it up to 435psi (max of my pump;-)). It's got a tiny QEV inside, triggered by a shrader valve. The cap hides the valve. It has got a small pin inside, that releases the air, when you press it onto the valve.

Image

The barrel is a 2mm aluminium tube. It can fire small steel balls (from ball bearings), toothpicks and nails.



Here's a video of firing it=)
http://www.youtube.com/watch?v=BvcB1N0RI0s

If you've got any ideas, criticism, questions, suggestions, tell me!:)
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Last edited by DasAbonnent on Thu Sep 18, 2014 8:11 am, edited 1 time in total.

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Re: 30 bar 435psi pengun

Unread postAuthor: n05gr0th » Mon Sep 15, 2014 4:18 pm

Awesome design! Where did you find ammo small enough to shoot out of that tiny barrel? And what did you construct your piston out of?
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Re: 30 bar 435psi pengun

Unread postAuthor: DasAbonnent » Thu Sep 18, 2014 8:10 am

Thanks=)
The piston is a small cylindric piece of rubber.
As ammo i'm using toothpicks or steel balls from ball bearings. Nails would also work
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Re: 30 bar 435psi pengun

Unread postAuthor: n05gr0th » Thu Sep 18, 2014 8:29 am

Any idea about the velocity it hits at 435 psi?
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Re: 30 bar 435psi pengun

Unread postAuthor: jackssmirkingrevenge » Wed Sep 24, 2014 7:34 am

Nice job, you need a higher pressure pump though ;)
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Re: 30 bar 435psi pengun

Unread postAuthor: DasAbonnent » Fri Oct 03, 2014 6:40 am

I'm wondering what pressure such a ball pen will hold before bursting;) what do you think?
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Re: 30 bar 435psi pengun

Unread postAuthor: TrollingCluckster123 » Tue Nov 11, 2014 11:07 am

You know that pens are not rated for pressure, right? If that pen were to fail while you were holding it your hand would be very badly injured. If it's not pressure rated, do NOT use it.
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Re: 30 bar 435psi pengun

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Re: 30 bar 435psi pengun

Unread postAuthor: BartSkillZ » Tue Nov 25, 2014 10:46 am

Hi there,

How do you make/Where can you get that mini Quick Exhaust Valve (QEV)?

Thanks for helping
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Re: 30 bar 435psi pengun

Unread postAuthor: Brian the brain » Wed Nov 26, 2014 3:12 pm

I'm guessing the mini QEV is nothing more than a solid rubber disc.
That's what I've used on my coaxials.
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Re: 30 bar 435psi pengun

Unread postAuthor: Donal » Fri Jul 03, 2015 8:08 am

Nice exercise of ingenuity...good werk.
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