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Me and my Airgun

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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Me and my Airgun

Unread postAuthor: FreaK_with_GuN » Sun May 22, 2011 6:03 am

Hi Spudders,

first of all i want to show myself to you all.

I'm 17 year's old from Germany (Mainz)

So pls don't hunt me for my baaaaaaad primaryschoolenglish :D



Soooooo and now what youre all waiting for.... My Airgun :-)


Parts i used are:

Airchamber: 3/4" steel parts
Piston: Pullback-Piston
Barrel: 15mm OD rifled copperbarrel housed in a 1/2" steelpipe
Rail and mounts: Stolen from my MP-7 / 4x30 sportscope

Operating pressure is around 11 bars when i have my new pump it will raise to 50 bars *i will get the wohle world muhahahaha*


So and now a few pics of the whole gun and the parts.....
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Attachments
CIMG3489.JPG
The whole Gun
CIMG3485.JPG
Airchamber and Pistonhousing...
CIMG3480.JPG
Pistonhousing
CIMG3482.JPG
view down the barrel
CIMG3484.JPG
Piston... :-)
CIMG3488.JPG
Try to Photograph my rifling :D
CIMG3490.JPG
without any words.......
CIMG3491.JPG
nothing to say....
CIMG3492.JPG
demage to 7.62 "specialbullet" after firing at a steelcan
CIMG3493.JPG
14mm "Flintenlaufgeschoss"
CIMG3494.JPG
front-demage after 50m fligtht against rifled steel plate... :-)

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Unread postAuthor: jrrdw » Sun May 22, 2011 6:24 am

Nicely done. How are you sealing the trigger assembly in the valve? A o-ring?

Welcome to Spudfiles. :D
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Unread postAuthor: jackssmirkingrevenge » Sun May 22, 2011 7:29 am

Very nice, you will be happy with the power difference when you take it up to higher pressure, though it will be loud! Some pictures of the piston assembly would be welcome, as I imagine it is made of standard parts and of interest to anyone who might want to replicate the design :)

How did you rifle the barrel and is it effective? Copper isn't too hard a material, even compared to lead.
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Unread postAuthor: FreaK_with_GuN » Sun May 22, 2011 7:37 am

Hi


I'll take a picture when my dad is back from soapboxderby.... He tooks my tools whit :D


The barrel is rifled with a normal riflingtool anyone is using in this forum and its verry effective compared to a normal barrel...

To the loudnes.... Its VERY loud at 11 bars i should wear ear protection at higher pressure... :D


Edit: found a pipewrench and took photos :-)
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Attachments
CIMG3496.JPG
Head of the riflingtool
CIMG3498.JPG
riflingtool in all its glory :-)
CIMG3500.JPG
the holyest part of the airgun..... the piston
CIMG3501.JPG
my workbench after 2 weeks of building airgun :D
MEINE EHRE HEIßT TREUE SO WIE BEI DEN JUNGS DER SCHWARZEN DIVISION

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Unread postAuthor: jackssmirkingrevenge » Sun May 22, 2011 8:08 am

Lovely, good to see people are making QDVs using over-the-shelf parts :)

FreaK_with_GuN wrote:Its VERY loud at 11 bars i should wear ear protection at higher pressure... :D


Schalldämpfer
:)

Image
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Last edited by jackssmirkingrevenge on Sun May 22, 2011 8:10 am, edited 1 time in total.
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Unread postAuthor: FreaK_with_GuN » Sun May 22, 2011 8:10 am

Hehe

i had that idea too a few minutes ago :D

Im going to take a 0.5 liter mezzomix thickwalled bottle that fits perfect on my barrel :D
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Unread postAuthor: jackssmirkingrevenge » Sun May 22, 2011 8:11 am

FreaK_with_GuN wrote:Im going to take a 0.5 liter mezzomix thickwalled bottle that fits perfect on my barrel :D


2 or 3 litre bottle would be better, remember suppressors are like engines - there is no substitute for cubic capacity ;)
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Unread postAuthor: FreaK_with_GuN » Sun May 22, 2011 8:14 am

Hmmmmmmmm we have no 2 lite bottles in germany so ill try a 1.5..... testing goes over studdying :D
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Unread postAuthor: jackssmirkingrevenge » Sun May 22, 2011 8:19 am

Here's another option, port the end of the barrel and fit a sleeve along the whole length of it:

Image

Separating the sleeve into chambers but adding baffles will make it more effective.

Image
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Last edited by jackssmirkingrevenge on Sun May 22, 2011 8:23 am, edited 1 time in total.
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Unread postAuthor: FreaK_with_GuN » Sun May 22, 2011 8:22 am

An idea is growing up in my head....... taking 1" parts and so on...... :-)
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Unread postAuthor: FreaK_with_GuN » Tue Jun 21, 2011 2:47 pm

Hi


my friends and me have build the airgun new with new barrel, silencer and piston.... :-)


Gun complete
http://www.abload.de/image.php?img=dsc_0717agtm.jpg
Piston with spring
http://www.abload.de/image.php?img=dsc_07189ijh.jpg
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MEINE EHRE HEIßT TREUE SO WIE BEI DEN JUNGS DER SCHWARZEN DIVISION

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