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Posted: Sun Dec 11, 2005 1:55 pm
by CpTn_lAw
I made it, a 2m long pneumatic spudgun...the chamber is 4cm diameter, and 1m long, it is connected to a modified diaphragm valve, with one is connected to a 1m long barrel of 18mm diameter...i tested it at 7 bars...(100 psi) and i understand why i didn't get the power of all your guns, with my last spud...i was using a soda bottel, filled up to 50 psi......now, 100 psi is good, i'll stay at this pressure!!
Why Copper
Posted: Tue Feb 07, 2006 5:14 pm
by mouse kid
Although copper pipes are easy to solder together and redily availible, I find that PVC pipes are the way to go. If a PVC cannon were to malfunction and explode right next to you, you will probubly not be to seriosly injured, however if a copper cannon were to exploded, it will throw shrapnel and most probubly kill you.
Posted: Tue Feb 07, 2006 5:49 pm
by beebs111
no, pvc would throw shrapnel too, and if you make it correctly neither one would have a significant chance of exploding
Posted: Tue Apr 04, 2006 12:21 am
by catguy801
Posted: Thu Oct 19, 2006 11:21 pm
by kris
Posted: Fri Oct 20, 2006 4:23 am
by joannaardway
As this topic has been brought up, Copper does not shatter, it tears.
If a copper cannon were to fail, you might get temporary hearing damage. If a PVC cannon failed, you'd get "pin-cushioned".
Posted: Fri Oct 20, 2006 4:45 am
by POS
nice to know, since I only have access to copper, no pressure rated PVC
Posted: Fri Oct 20, 2006 4:54 am
by joannaardway
You can get pipe benders for copper that work on that basic principle.
The benders only work because copper stretches instead of breaking.
Posted: Sat Oct 21, 2006 12:42 pm
by frankrede
Nice cannon.
Btw, since you broke the window you should have told him and offered to replace it.
Copper beats pvc because well Its safer less brittle.
Posted: Sat Apr 07, 2007 2:19 pm
by spanerman
it depends on the fitting also, compression fitting cant take as much as a good solde joint. 300 is the maximum id feel safe too
Posted: Mon Apr 09, 2007 4:54 pm
by DasGestapo
that is wicked sick nasty!!!
you should turn some armor piercing dart thingies, and chrono the shots
Posted: Mon Apr 09, 2007 4:57 pm
by locksmith
nice design you made sure it wasnt gonna leak
Posted: Tue Apr 10, 2007 9:04 am
by PAspuder
I bet that cost a fortune to make....but its a real piece!
8) 
all i can say is im from new zealznd and yhe cops here outlaw this stuff but that dont stop us from shooting there cars