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Fish Killer Project

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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Unread postAuthor: ShowNoMercy » Sun Jun 10, 2007 1:52 pm

No pictures! :cry:
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Jesus saves, no need to pray
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It seems you've lost your way
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 10, 2007 2:12 pm

Sure there are.

More: http://www.hkpro.com/peleven.htm
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Unread postAuthor: iknowmy3tables » Sun Jun 10, 2007 3:40 pm

bah here a real's under water gun http://world.guns.ru/assault/as69-e.htm
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Unread postAuthor: Solar » Sun Jun 10, 2007 4:06 pm

Take a look at the Mares compressed air spearguns. I have seem exploded views of this somewhere.

http://scubamart.com/mares-mini-sten-speargun.html
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 10, 2007 4:48 pm

Ok back on topic. I understand shooting fish is out of the queston.
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 17, 2007 2:47 pm

Finally got the right blowgun and finished the quick disconnects:

Image

Image

Image


I still have a problem though. The quick disconnect isn't perfect so the barrel wobbles a little. I'm hoping the support/guide will straighten it out.
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Unread postAuthor: spudthug » Sun Jun 17, 2007 2:58 pm

whats that big white thing?? u ddint need the pipe dope after the exhaust as it doesnt hold air..but oh well good job!!
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 17, 2007 4:53 pm

Read my post on the previous page. It explains how everything fits together. It's for strength.
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Unread postAuthor: Velocity » Sun Jun 17, 2007 4:57 pm

It might not hold pressure after the exhaust port, but high pressure air still rushes through. The majority of this air will travel to the path of least resistance, which is out the barrel. However, some of this air will find places to travel out of other than the barrel, such as through those threads. Adding Teflon tape not only prevents this loss of air, but it also makes it easier to thread and later unthread.
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Unread postAuthor: TurboSuper » Sun Jun 17, 2007 10:59 pm

Dunno if it was mentioned already, but shooting fish is harder than you'd be led to think. The water can make it appear that the fish is somewhere where it actually isnt.
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Unread postAuthor: Modderxtrordanare » Mon Jun 18, 2007 12:19 am

TurboSuper wrote:Dunno if it was mentioned already, but shooting fish is harder than you'd be led to think. The water can make it appear that the fish is somewhere where it actually isnt.


Unless you are underwater too, then of course refraction wouldn't occur. :wink: (to a noticeable degree)
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Unread postAuthor: dongfang » Mon Jun 18, 2007 2:08 am

Hi,

Where do you guys find an affordable quick release valve? The ones I have seen in Denmark & Switzerland (where I live...) have always cost 100s to 1000s.

Regards
Soren
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Unread postAuthor: PVC Arsenal 17 » Mon Jun 18, 2007 12:30 pm

I bought mine off McMaster.com The brand is Deltrol.

There are a bunch of them on eBay for reasonable prices. Hopefully the shipping won't be too much.
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