Zero's Cannons

    This is a showcase for all of the homebrew cannons I have built throughout the years. Cannons will be added as I unearth them, and/or pictures, designs, and details about them. I aim to add plans for all of the cannons, eventually. Plans will be posted as I complete them.
    The plans posted are assembly diagrams only. Step-by-step instructions will not be provided. The following construction guidelines should be followed: Clean all joints with alcohol or preferably, PVC cleaner. Use only real PVC glue for all joints. Do not use superglue, epoxy, or any other adhesive. In general, do not glue screw in parts. Drill holes as needed for spark terminals, and space the spark terminals about half an inch apart to ensure a good arc. Seal spark terminals in with PVC glue or epoxy putty. Seal all valves, screw in or otherwise, with PVC glue to ensure an airtight joint. Insulate wires as needed with elecrical tape. Allow 12 hours for the PVC glue to dry - Do not attempt to use the cannon before this time has passed.

Combustion / Discombobulator Series
 
Designation 250 (Cannon has been destroyed. 
No picture available.)
Specification Small bore combustion cannon. Straight-though one-hand combustion with piezo ignition. Fixed barrel.
Box Dimensions Unknown.
Design Dimensions 1.75" chamber and barrel.
Operating Pressure ~ 30 PSI
Max. Recorded Range Unknown.
Parts List 1x 1.75" PVC replacement drainpipe. Comes in a kit with mounting rings and an endcap. 1x universal grill igniter.
Notes     This is the first ever cannon that I built, if you can even call it a cannon. I was probably about eleven years old when I made it, so you really can't expect too much. It was an extremely ameteur and simple affair, merely a length of precut drainpipe with a endcap stuck on it and a grill igniter mounted in it. It had very little power but it was small and portable, and against all logic it worked. It could fire nerf balls and empty airbrush paint bottles about 75 feet. 
    It worked for a very long time, but I lost it a few years later. That's what I get for building them so small.
 
Designation 1000 (Cannon has been destroyed. 
No picture available.)
Specification Medium bore combustion cannon desined to fire golf balls. Straight-though two-hand combustion with piezo ignition. Removable barrel.
Box Dimensions Unknown.
Design Dimensions 9x3" chamber, 12x1.66" removable barrel.
Operating Pressure ~ 30 PSI
Max. Recorded Range Unknown.
Parts List 1x 9x3" schedule 40 PVC. 1x 12x2" schedule 40 PVC. 2x 3" threaded cleanout adapter. 2x 3" threaded cleanout cap. 1x Aim'n'Flame style long lighter. Epoxy putty, PVC glue.
Notes     The 1000 model brings back memories. This was my second cannon that I built with no outside help. It was constructed many, many, years ago. Due to inexperience and lack of parts there was no proper reducer to fit the 2" barrel to the 3" chamber. I bored a 2" hole in one of the endcaps and secured the barrel to it with glue and epoxy putty. I hadn't used PVC glue, either, instead electing to use normal 5 minute epoxy. This is the first cannon to use a barrel with a bore size reduced with duct tape, as it was designed to fire golf balls. Instead of a grill igniter (I had none onhand) I used a slightly modified Aim'n'Flame for the ignition source. 
    Come to think of it, the whole thing was pretty much a made-from-scraps operation. Unlikely as it was the thing worked for some 150 shots before it exploded.
 
Designation 1500 (Originally titled "Pinhead")
Specification Medium/Heavy bore combustion cannon. Straight-through two-hand combustion with grill igniter (piezo) ignition. Fixed barrel.
Box Dimensions Unknown.
Design Dimesions 19x4" chamber, 11x2" fixed barrel.
Operating Pressure ~ 40 PSI
Max. Recored Range Unknown.
Parts List 1x 19x4" schedule 40 PVC. 1x 11x2" schedule 40 PVC. 1x 4" threaded cleanout adapter. 1x 4" cleanout cap. 1x 4-2" bushing. 1x grill igniter, 1x 7x1.25" PVC. 1x 5" hose clamp. 2x 1.5" drywall screws. PVC glue.
Notes     This cannon comes with a back-story. It was built by a relative and his friend at their place of employment (names witheld to protect the guilty) in 1997. When it was originally constructed it had a barrel over seven feet long, bringing the overall length to just under nine feet. At that time the spark terminals were located with one next to the cleanout cap on the rear and the other set in the cap itself. This design was very effective, but fragile. 
    In 2000 the cannon was passed along to myself and another relative. In order to fit the thing in the car the barrel was chopped to about three and a half feet long. The barrel on the cannon was far too long in the first place, and sapped the cannon of precious power, so this modification was practical in terms of performance as well as portability. The old centerfire cleanout cap was replaced with a less damaged one, and the odd spark terminals with normal ones. Later an old screwdriver handle was anchored to the cap to aid in its removal. The cannon was given an extremely ugly tape-job (not by myself, naturally) and was christened "Pinhead". It looked like something out of a Marilyn Manon video. 
    The cannon remained in intermittent service until 2002, when I shortened the barrel again, making the cannon more of a bullpup than a bazooka. Again, transportation and storage constraints contributed to the modfication. The cannon is still in use and still operates flawlessly, making it the longest lived PVC combustion cannon that I know or have heard of. Many, many a potato has been fired from this beast.
 
Designation 1600 ("Genova")
Specifcation Medium/Heavy bore combustion cannon. Straight-through two-hand combustion will grill igniter (piezo) ignition. Fixed barrel.
Box Dimensions Unknown.
Design Dimensions 22x3" chamber, 24x2" fixed barrel.
Operating Pressure ~ 40 PSI
Max. Recorded Range Unknown.
Parts List 1x 22x3" schedule 40 PVC. 1x 24x2" schedule 40 PVC. 1x 3" threaded cleanout adapter, 1x 3" cleanout cap. 1x 3-2" bushing. 1x grill igniter, 2x drywall screws. PVC glue.
Notes     Functionally this cannon is very similar to the 1500/Pinhead model. A friend of mine built this one, though, and while the design and dimensions are similar to the legendary Pinhead it is otherwise a run-of-the-mill fixed barrel combustion. It is most noticeably sans handle, and has heavy-duty opposing spark terminals and a shoulder strap, as well as some rings to hold a ramrod and a fetching paint job.
 
Designation 2000  
 
Specification Medium bore combustion cannon, designed for firing golf balls. Straight-through two-hand standard combustion with grill igniter (piezo) ignition. Interchangeable barrels.
Box Dimensions 9"H x 36"W x4"D
Design Dimensions 12x3" chamber, 2" female threaded barrel adapter for barrels ranging from .75 to 3". Equipped with a custom 17.5x1.66" golf ball barrel as standard.
Operating Pressure ~ 40 PSI
Max. Recorded Range Unknown.
Parts List 
Plans
Main Cannon: 1x 12" length of 3" schedule 40 PVC. 1x 3-2" schedule 40 reducer. 1x 2" female threaded cleanout adapter. 1x 15.25" length of 2" schedule 40 PVC. 1x 2" length of 2" schedule 40 PVC. 1x 6" length of 2" schedule 40 PVC. 1x 3" female threaded cleanout adapter. 1x 3" threaded cleanout cap. 1x 10" hose clamp. 1x unversal piezoelectric grill igniter. 2x 1.5" drywall screws. PVC glue, epoxy putty. 
For Each Barrel: 1x 2" male threaded adapter. 1x variable length of 2" schedule 40 PVC, or reducers to affix sizes other than 2" to a 2" female threaded socket. Recommended barrel length is 16 to 20 inches.
Notes     This is probably my most recognized cannon. It was, of course, originally designed to fire golf balls. I had to make a custom barrel to fit the balls (as a regulation golf ball is 1.66 inches in diameter or so) by lining a regular length of 2" PVC with duct tape until it was the proper inside diameter. 
    Notice the various design elements borrowed from previous models, such as the hose clamp handle and trigger setup, rear cleanout cap, and drywall screw spark terminals. 
    Aside from the custom barrel the Discombobulator 2000 is a bog-standard combustion cannon of no particular merit. To set the it apart from the crowd visually it is covered from muzzle to cap with black grip tape. The handle, hose clamp, and original cleanout cap are colored black as well. The cannon is also equipped with a laser sight, and is surprisingly accurate.
 
Pneumatic / Defenestrator Series
 
Designation 499
Specification Small bore pneumatic cannon. Straight-through two-hand with 3/4" ball valve. Interchangeable barrels.
Box Dimensions Unknown.
Design Dimensions 16.75x1.5" chamber, 3/4" threaded adapter for barrels ranging from 1/2" to 1". Equipped with a 17.75x1/2" barrel as standard.
Operating Pressure Up to 125 PSI
Max. Recorded Range Unknown
Parts List Main Cannon: 1x 16x1.5" schedule 40 PVC. 1x 1.5" endcap. 1x 2-1.25" reducer. 1x 1.25" to .75" bushing. 1x .75" male threaded adapter. 1x 3/4" brass quarter turn ball valve. 1x schrader (tire) valve. PVC glue, lots of epoxy putty, and duct tape. 
Barrel: 1x .5-.75" threaded male adapter. 1x 18x.5" schedule 40 PVC.
Notes     This is a prototype extremely simple small bore pneumatic. It is functionally identical to the 500 model, but is much more crude. It was made quite literally from parts that were lying about, including a 3/4" ball valve stolen from a place of employment and a tire valve cut from the tube of a scooter tire. 
    While it leaks a bit (the chamber pipe is 1.5" diameter jammed into a 2" reducer and there is an adpter shoved into a bushing that's not meant to be - hardly professional) the 499 is quite effective and fires earplugs, clay pellets, large common nails, and musketballs with its standard half inch barrel.
 
 
Designation 500  
Additional Media: Fill Valve, Ball Valve.
Specification Small bore pneumatic cannon. Straight-though two-hand with 1/2" ball valve. Interchangeable barrels.
Box Dimensions 3.10"H x 49"L x 3.35"D (with valve open)
Design Dimensions 15.5x2" chamber, 1/2" threaded adapter for multiple barrels. Equipped with a 24.25x1/2" barrel as standard.
Operating Pressure Up to 150 PSI
Max. Recorded Range Unknown
Parts List 
Plans
Main Cannon: 1x 15.5x2" schedule 40 PVC. 1x 2" endcap. 1x 2-1.5" reducer. 1x 1.5-1" bushing. 1x 1-3/4" bushing. 1x 3/4-1/2" bushing. 1x 1x1/2" schedule 40 PVC. 2x 1/2" male threaded adapter. 1x heavy-duty metal shcrader valve. 1x 1/2" brass quarter turn ball valve. PVC glue. 
For Each Barrel: 1x variable x 1/2" schedule 40 PVC. 1x 1/2" male threaded adapter, or reducers and fittings to affix the pipe of your choice to a 1/2" female threaded socket.
Notes     The fitted and polished version of the 499. This cannon was much more professionally assembled (no duct tape was required), used proper 2" pipe for the chamber, and a slightly different reducer setup. The number of parts needed to reduce the chamber from 2" to 1/2" is truly insane. Apparently 2-1/2" reducers and bushings simply don't exist. It takes 5 parts to reduce the pipe from 2" to 1/2". 
    This cannon uses a higher quality tire valve and higher quality ball valve, and can be safely taken to higher pressures than it's prototype cousin. In addition, it's optional 3/4" barrel can fire paintballs and cratermakers. It uses a smaller ball valve, since the selection I was presented with had very hard to open 3/4" valves. With a little tri-flow on it the 1/2" used on the cannon glides open like butter and can be opened in a snap.
 
Designation 2000
Specification Small to medium bore pneumatic cannon. Straight-though two-hand with 1" solenoid valve. Interchangeable barrels.
Box Dimensions 11.25" H x 58.5" W x 6" D
Design Dimensions 15x3" chamber, 1" threaded adapter for multiple barrels. Equipped with a 27x1.66" barrel as standard.
Operating Pressure Up to 100 PSI
Max. Recorded Range Unknown
Parts List
Plans
Main Cannon: 1x 11.25x3" S40 PVC. 1x 5x1" S40 PVC. 1x 3" endcap. 1x 3-2" reducer. 1x 2-1.5" bushing. 1x 1.5-1" bushing. 1x 2x1" S40 PVC. 1x 1" male threaded adapter. 1x heavy duty schrader valve. 1x 1" Rainbird solenoid sprinker valve. 1x 3.5" hose clamp. 1x momentary pushbutton, 1x toggle switch. 2x 9v batteries, 2x heavy duty 9v battery clips. 1x Altoids tin, 1x roll of duct tape. PVC glue, teflon tape. 
For Each Barrel: 1x length of 1" S40 PVC and 1x 1" male threaded adapter, or fittings to reduce the pipe of your choice to a 1" male thread. Plans given (link to the left) are for a golf ball barrel, which requires 1x 27x2" S40 PVC, 1x 2-1.5" reducer, 1x 1.5-1" bushing, 1x 2x1" S40 PVC, and 1x 1" male threaded adapter.
Notes     A medium sized all-purpose pneumatic. I designed this one around a Rainbird electric solenoid valve for ease of firing. The solenoid valve opens very quickly, but in reality offers only about 3/4 of an inch of airflow. Regardless, the cannon is designed to work with a 3/4" barrel (cratermakers, paintballs), a 1" barrel (bouncy balls, shooter marbles, potato slugs), and a 1.66" custom golf ball barrel. 
    Dimensionally speaking it's basically a pneumatic Discombombulator 2000, right down to the golf ball barrel. The firing mechanism is a simple Altoids style tin with two 9v batteries and a safety switch wired to a push button. It uses the same handle and trigger arrangement as the DC 2000 as well.