Pirate Cannon - A working replica of a naval cannon that fires pneumatically

Step 6 Fire in the Hole

The firing mechanism is in order from right to left:

1/4 inch quick release
1/4 inch to 3/4 inch fitting
Sprinkler Valve (3/4 inch inline modified) Tutorial Here
3/4 inch close nipple
3/4 inch to 1.5 inch flush bushing (schedule 40 PVC)
Schedule 40 1.5 inch coupler
Schedlue 40 pipe 1.5 inch cut to length (the barrel)

During the modification of the sprinkler valve, you will add a 1/4 inch threaded nipple, and to this I attatched a lenght of hose and then the "blow gun". The blow gun acts as the trigger for firing the cannon. The quick disconnect is connected to the hose that runs to the compressor.

Comments

[kdiver58]

What is the section of tube that comes out the top of the valve used for? I'm talking about the piece that has the red end .. Thanks K

[stewey]

I am having a problem with air leaking out of the barrel..When I put my finger over the spot where the solenoid is the leak goes away..Do I need to seal that hole where the solenoid goes with a little JB Weld?

[Captn Avenger]

Instead of modifying the irrigation valve, you could trip the solenoid with a 9 volt battery. That is how we (irrigation service technicians) test them in the field.

[Part Time Chef.com]

That would work, but making the modifications the valve will open much quicker therefore giving much more range and a more effective shot. I took the learnings (and link) from a spud gun site. If you just want a stage piece to throw out some 'smoke' then you are correct. If you are like me and want something to really SHOOT then try the mod. UPDATE: I did fiberglass the cannon for strength and I'm glad I did. I made some reusable rounds that hold a glow stick and shoot the hell out of them. Big Fun.

[maxpower49]

how much was the fiberglass and how did you make the reuseable glowstick round

[ootm]

COOL!!! I think you need a video.