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All Metal Coaxial Sniper

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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Unread postAuthor: Gippeto » Mon Sep 07, 2009 9:22 am

You did a great job, you should be proud of this. You REALLY nailed the "tube gun" look too.

http://www.google.ca/imgres?imgurl=http ... 6&ct=image

Kudos. :thumbright: :thumbright:
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Unread postAuthor: far_cry » Mon Sep 07, 2009 11:49 am

i cant say anything .this is fantastic look and over kill performance

so the old table pool it's made wood ? and how thick is she ? 2cm maybe
and the piston what did you mean by fully rubber ? because i have problem with my piston seal face ,maybe i make one like yours
and what about the accuracy ?

and this pic i see a black line draw ,the nail in the middle, is this coincidence or accurate ?


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Unread postAuthor: pipeboyswe » Mon Sep 07, 2009 1:02 pm

Very nice gun what material did you make the piston off? :D
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Unread postAuthor: qwerty » Mon Sep 07, 2009 1:15 pm

Should of read it :wink:

The piston is a solid rubber test tube stop sanded down and epoxied into a 3/4" piece of copper that slides in a nipple.
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Unread postAuthor: Mitchza89 » Mon Sep 07, 2009 7:25 pm

Wow! Mate I tell ya, it couldn't have turned out any better. I really do take my hat off to ya on this one. It looks amazing and the power is fantastic.

Damn I'd love to give that little beauty a fire!

Keep up the great work :D
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Unread postAuthor: jmadden91 » Mon Sep 07, 2009 7:41 pm

Thanks for all the comments guys :D

@far_cry: Lol no I was just marking each shot so i could tell the new ones haha. In that pic it was not a concrete nail so instead of penetrating it hit and bent the nail almost 90 degree's.

And the pool table would be about 1" thick but its not ply, its more like an MDF sort of material.

The piston is great, Its a rubber stopper like this that I sanded down and epoxied into a small piece of 3/4" copper. But because its a high density rubber and the piston isnt a perfect fit it needs a bit of pressure behind it to seal (I put my finger over the barrel when I start the pump).

Image


Thanks again for all the comments guys

@Mitch: Sounds good mate :D
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Unread postAuthor: Ragnarok » Mon Sep 07, 2009 7:50 pm

Impressive. Not exactly awed by the use of zip ties, but that's fixable.

I'd say the scope looked to be mounted uncomfortably low... how is it to actually use?

qwerty wrote:Should of read it :wink:
Should have used the right word. :P
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: jmadden91 » Mon Sep 07, 2009 7:57 pm

Lol pretty useless really, Its more effective to just ignore it. Zip ties will go. Thanks for the comment mate
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Unread postAuthor: maverik94 » Mon Sep 07, 2009 9:05 pm

I hope that galvanized steel is not electrical conduit, nice build!
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Unread postAuthor: jmadden91 » Wed Sep 09, 2009 5:44 am

What do you mean? You said it yourself, its galvanized steel, not electrical conduit. But thanks mate
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Unread postAuthor: Ragnarok » Wed Sep 09, 2009 11:19 am

Galv steel is occasionally used as a material for electrical conduit. It's still pretty strong of course, but not as strong as Galv steel that's intended for use under pressure.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: jmadden91 » Wed Sep 09, 2009 6:51 pm

Wow I had no idea. Well I got this from the plumbing section at my local hardware store so I am assuming it is the latter.
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Unread postAuthor: i-will » Fri Sep 11, 2009 1:44 pm

best aesthetics i've seen in a long time. props. the thing looks sweet and simple. you've pleased me. :lol:
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WHY PAY FOR IT WHEN U CAN MAKE IT?
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Very nice.

Unread postAuthor: Technician1002 » Fri Sep 11, 2009 2:26 pm

I'm glad the stopper is holding up to the pressure. Well done.

I'm working on a high pressure metal coax at the moment. Here is a sneak peek.
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Attachments
Copper1.jpg
Copper QDV. Click on photo for full size.
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Unread postAuthor: jmadden91 » Fri Sep 11, 2009 7:00 pm

@Iwill - Lol im glad to have pleased you, thanks for the comment

@Tech - Thanks mate, I cant wait to see your QDV perform at some high pressures. What are you going to be taking it to?
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