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Simple Bait Launchers

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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Simple Bait Launchers

Unread postAuthor: airpress » Tue May 22, 2012 12:01 pm

Hi.

If made a few weeks ago 2 exactly aircannons.
Some specs:

- 30cm 2" steel pipe
- 1m 22mm copper barrel
- sanded with fine steelwool and directely varnished
- exhaust valve, a simple 1/2" ballvalve
- compressor fitting
- 16 bar manometer

Some pics:

1:
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2:

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Airpress
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Unread postAuthor: POLAND_SPUD » Tue May 22, 2012 12:09 pm

heh not very advanced but still pretty cool

nice to see you back
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Unread postAuthor: mattyzip77 » Tue May 22, 2012 12:13 pm

Nice clean build you got there. As Poland said, not too advanced, but what the heck??? Its a cannon right!! Welcome back to the forum!! :) :) :)
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Unread postAuthor: Brian the brain » Tue May 22, 2012 12:51 pm

Back to building boilie cannons I see...

:D
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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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Unread postAuthor: 8tonsemi » Tue May 22, 2012 6:26 pm

Awesome job. The metal looks great with that shine. It looks like it could shoot stuff a long way. :lol:
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Unread postAuthor: airpress » Sat May 26, 2012 12:57 pm

Today i tested my pipes for my hybrid i'm making.
So far I gone so far with the (steam)pressure:
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Unread postAuthor: jackssmirkingrevenge » Sun May 27, 2012 7:17 am

That's quite a jump from a ball valve pneumatic :D More details on the hybrid build?
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Unread postAuthor: airpress » Sun May 27, 2012 7:31 am

Indeed. But i made combustions and pneumatic piston Valved cannons before. But that was a few years ago when spudtech forum was still alive.

It will be a burst disk hybrid with 1 1/2" pipes.
More info in a couple of days in section hybrid cannons.
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Unread postAuthor: Gippeto » Sun May 27, 2012 8:24 am

airpress wrote:Today i tested my pipes for my hybrid i'm making.
So far I gone so far with the (steam)pressure:


Not to sound like a total arse, but if you wanted to check the integrity of a pipe...steam is the absolute MOST dangerous way to do so. :shock:

Not only does the heat reduce the safe working pressure of the pipe, but high pressure steam is a VERY energetic medium when suddenly released to atmosphere.

Image


Get yourself a grease gun, fill the pipes with oil and pressurize with the grease gun...with the air properly eliminated from the system, any failure will be very anticlamatic.
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Unread postAuthor: airpress » Mon May 28, 2012 2:46 pm

Today i get it to 60 bars.

I think you don't understand my method.
I just fill the whole chamber with water.
On the union i connect a long 3/4" pipe also filled with water.

There is no are in the whole system.
Then i take a gas burner and i not minutes the meters go like crazy, 10,20,30,... bar. I think i reached 60bars in just 45seconds.

More info coming soon.
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Unread postAuthor: Crna Legija » Tue May 29, 2012 3:01 am

yeah but if your next to it when it blows witch is more likely since its hot, the steam will make it explode worse then if it was just air and don't the boiling hot water/super headed steam that's gonna burn the feck out of you, if your close.
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Unread postAuthor: airpress » Tue May 29, 2012 3:39 am

I my eyes, it is not steam, but just the water that is expanding.
Or i'm wrong? When i open the ball valve, its just a little bittle pressure water that escaped.
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