BigJon's Latest Cannon

[BigJon]

This is my newest and biggest pneumatic cannon. It is the first gun I have built that was designed just for potatoes. I have only got a couple shots off this morning so no damage pics yet.

Here are the specs:

Barrel: 4'x1 1/2"
Chamber: 3'x2"
C:B: aprox. 1:1
Valve: 1"sprinkler valve

sorry for the bad pics but here they are:

[elitesniper]

thats cool looks veery simple, nice

[BigJon]

Yeah I was going for simplicity on this one because of my low budget. I built the whole thing for under $30 and it still packs quite a punch.

[elitesniper]

30?!? wait where are you from?

[BigJon]

The US. Sprinkler valve was 11 bucks(already had stuff to mod it)and fittings were about a buck each(already had the pipe also)

[elitesniper]

oh yea sprinkler valves are cheap here my cannons range from 15-20 bucks but next ones guna be a little pricey

[BigJon]

Cool can't wait to see how it turns out!

On another note I was thinking about painting it because I have some grey and some flat green, any suggestions?

[sandman]

i wish my cannon cost only $30, but a nice simple design you have there

[pvcmaster]

Your cannon looks great, nice and simple. I believe you used these plans, correct?
Basic Pneumatic Cannon
I used the same ones to build my first cannon:
My First Cannon

[BigJon]

Actually I have never seen those plans before but it does look just like mine except for the valve. Oh and nice cannon pvcmaster.