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High pressure pen gun MK1

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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High pressure pen gun MK1

Unread postAuthor: Necrosis » Mon Aug 04, 2008 1:03 pm

It's a pen sized piston valved pengun from hell.. atleast.. it's going to be.

The pressure test at 8 bar showed no leaks.
Up that pressure 10 times.. and that's what I am going to try it at next. when my pump is finished.

I might even go all the way up to 200 bars.. since this can easilly hold that.

Well is it any good to even use a piston at such high pressures?


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Unread postAuthor: SpudFarm » Mon Aug 04, 2008 1:06 pm

you should use a machined piston that is as light as possible.
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Unread postAuthor: Necrosis » Tue Aug 05, 2008 10:09 am

BUMP!


I finished the checkvalve for my high pressure pump!

I should be able to test this pengun soon

:D
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Unread postAuthor: elitesniper » Tue Aug 05, 2008 10:43 am

can we see some more detailed picture? :)
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Unread postAuthor: jackssmirkingrevenge » Tue Aug 05, 2008 11:10 am

lets see some internal pics :)
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Unread postAuthor: Necrosis » Tue Aug 05, 2008 12:31 pm

jackssmirkingrevenge wrote:lets see some internal pics :)


There are not much internals yet.

I have yet to make a poppet valve in the back.
And the piston


Prorbably will do this once I get my 1/4th inch gas thread tap.
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Unread postAuthor: psycix » Wed Aug 06, 2008 11:56 am

Is it really fat, or just short?
Whats the diameter on that thing? It looks a bit massive for a pen.
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Unread postAuthor: blind909 » Wed Aug 06, 2008 12:53 pm

psycix wrote:Is it really fat, or just short?
Whats the diameter on that thing? It looks a bit massive for a pen.


I think its more of a marker gun
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Unread postAuthor: psycix » Thu Aug 07, 2008 8:13 am

Or a "pencil case gun"
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Unread postAuthor: jackssmirkingrevenge » Thu Aug 07, 2008 8:17 am

psycix wrote:Or a "pencil case gun"


Interesting idea - imagine a row of four or five marker guns in a hard pencil case, it will give you concealed multi-shot capability, just like this cell-phone gun - as a purely academic exercise, of course ;)
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Unread postAuthor: Sticky_Tape » Thu Aug 07, 2008 8:59 am

looks like it will pretty cool can you give us a pic of it next to a rule?
unfourtunatly just a guess I don't think that you will find a type of rubber to hold that much pressure.
BTW holy shite this will use 200bars? What is your airsourse scuba tank?
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You can tell how awesome a cannon is by the pressure used.
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Unread postAuthor: Necrosis » Thu Aug 07, 2008 11:19 am

Sticky_Tape wrote:looks like it will pretty cool can you give us a pic of it next to a rule?
unfourtunatly just a guess I don't think that you will find a type of rubber to hold that much pressure.
BTW holy shite this will use 200bars? What is your airsourse scuba tank?


My high pressure pump..
Or if that fails, my scuba tank, yep.
Image


:)
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Unread postAuthor: Sticky_Tape » Thu Aug 07, 2008 11:26 am

Ha Ha it's longer than mine mine is olny 160mm. you are going to get 200bar out of your pump can you give a pic?
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You can tell how awesome a cannon is by the pressure used.
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Unread postAuthor: Necrosis » Thu Aug 07, 2008 11:36 am

Sticky_Tape wrote:Ha Ha it's longer than mine mine is olny 160mm. you are going to get 200bar out of your pump can you give a pic?


It's not done yet. (need to wait for stupid o-rings to come in. :/ (Yep hydraulic grade ones)


But I must have a pic somewhere.. let's see...


Okay wait up 5 min.
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Unread postAuthor: Sticky_Tape » Thu Aug 07, 2008 11:46 am

it doesn't mattre if it isn't done yet just give us a pic.
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