This Instructable will teach you to make a basic, easily modded air cannon. The single-barreled version shoots 'ACRAZY far.


Step 1: Gather the parts

The following is a list of required parts:
If you want a double-barrel, include these parts in addition to the other parts:

1' of 1" diameter, threaded PVC pipe
3 1 1/2 long, 1" diameter threaded PVC pipe
2 quantity: 90 degree elbow joints (1" diameter)
1" diameter 3 way T-shaped pipe

If you want a single-barreled version, only use these parts
1' of 1" diameter, threaded PVC pipe
1 1/2 long 1" diameter threaded PVC pipe
1" diameter metal ball valve
1 or 2  ft. (The longer this pipe is, the more powerful the gun, but this is also for you to choose) of 2" diameter, (non-threaded) PVC pipe
Bicycle tire, any size
2" to 1" PVC reducer, non-threaded to threaded
2" PVC connector (used to join two 2" diam. pipes, ask an employee at a hardware store)
2" diameter PVC endcap

Now for the hardware

Epoxy, preferably flexible
Bike Pump
PVC primer
PVC cement
Clamp (optional)
<p>I made an air cannon similar to this the link is,</p><p><a href="http://www.instructables.com/id/150-psi-Air-Cannon/" rel="nofollow">http://www.instructables.com/id/150-psi-Air-Cannon...</a></p><p>I was able to get this up to 150 psi</p>
<p>You will defiantally want a longer barrel because your wastin tons of power with the mini barrals and you should upgrade to a sprinkler valve of a piston valve</p>
to maximize efficiency, the volume of the barrel should be proportional to the volume of the air tank and pressure.<br><br>For example, since atmospheric pressure is 14.7 psi and you pump your cannon to 100 psi, 100/14.7 = ~6.8. So, the volume of the barrel should be 6.8 times the volume of the air tank.
&nbsp;thanks for the tip, this is only my first gun, so i dont know a lot
yeah well its a lot nicer than my first cannon, if you want more info check out <a href="http://www.spudfiles.com" rel="nofollow">www.spudfiles.com</a> it will give you all the info you want on air cannons
I would like to suggest that all high pressure air cannon instructables should include a warning such as:<br> <br> &quot;These air weapons can shoot things fast enough to cause severe injuries.&nbsp; Never use them to shoot things at people.&quot;<br>

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