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INSTRUCTIONS TO BUILD CANNON #2
First you will need....
1. 3" Thick wall PVC pipe approx 10" long
2. 2 3" straight PVC couplings
3. 1 3"x 1 1/2" reducer
4. 1 3" threaded endcap
5. 1 3" threaded endcap adaptor
6. approx. 4ft of 1 1/2" thick wall PVC pipe for barrel
7. PVC cement
TOOLS....
1. hacksaw
2. drill
3. file
ASSEMBLY INSTRUCTIONS
First make sure all peices are clean for glueing. Take one of the 3" couplings and apply PVC cement all around one of the inside ends and insert the 3" threaded endcap adaptor. Let dry. With the other coupling, glue the 3"x1 1/2" adaptor. Let dry. Cut a section of the 3" PVC long enough to insert between the coupling assemblies with about 2 inches showing between the two. Screw endcap into the endcap adaptor. Drill a small hole in the pipe showing between the couplings. Drill a small hole in the center of the endcap. The expansion/combustion chamber is complete. Apply PVC cement to the inside of the 1 1/2" adaptor. Insert the section of 1 1/2" pipe to be used for your barrel. I recommend at least 40inches. Take a gas grill ignitor and tape the two wires together about 10' long. Insert through the hole in endcap, with the button to the outside. On the other end strip 1/4" off the ends of both wires and form a gap between the two wires so that when you push the button a spark jumps between the 2 wires. Pull excess slack out so that the wires do not touch the sides of the chamber.
THE CANNON IS COMPLETE!
TO FIRE THE CANNON
ALWAYS USE EXTREME CARE!!! YOU ARE SOLELY RESPONSIBLE FOR USE OF YOUR PROJECT!!! Remove the endcap and place a semi-tight wad of newspaper in the end of barrel nearest chamber. Pour an amount of paintballs into barrel. Place another semi tight wad of newspaper into the barrel so paintballs wont roll out. Squirt a small amount of hairspray or WD-40 into the hole in the side of chamber. Start with small amounts not to remove the oxygen from chamber, or it wont fire. DO NOT HOLD IN HANDS WHEN FIRING UNLESS YOU HAVE TESTED AND FEEL COMFORTABLE WITH THE CONSTRUCTION.Then all you have to do is press the button and.......BOOM!!!
TO CONVERT TO CO2 SYSTEM-- cut the barrel 2
" above the expansion chamber. Attach a 1 1/2" high quality ball valve. Re-attach barrel to other end of ball valve.THIS IS THE TRIGGER SO MAKE IT FEEL COMFORTABLE. Remove the endcap and use reducer bushings from 3" to 3/8". Use a 3/8" "T" fitting and install a pressure gauge on the T. next install a 3/8" cutoff valve or a tank valve before attaching CO2 tank adaptor. TO FIRE-- close trigger valve. SLOWLY Pressurize the expansion chamber NEVER HIGHER THAN PRESSURE RATING OF THE PVC YOU USED. START WITH LOW PRESSURES FIRST!!! Get the feel of it and note pressures befor going up, and always SAFETY FIRST!!! YOU USE THIS INFORMATION AT YOUR OWN RISK.
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