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 How do I make a cannon barrel?
FrankSymptoms  [Team Member]
7/9/2007 7:54:23 PM EST
I'd like to make a large Black Powder cannon barrel. I want it large enough to launch a beer can (filled with concrete) so I don't have to buy tons of lead and cast it.

Any ideas on how to bore the inside of such a cannon?
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Skibane  [Team Member]
7/9/2007 8:21:56 PM EST
Bowling ball mortars seem to be popular (example) (another example) (Mortar/Cannon Forums) -

Old gas cylinders are also popular as the starting point for conversions - Often, the converted "barrel" is loaded with a 2X or 3X powder charge for a test shot, to ensure that the metal is sound.

Personally, I like the idea of removing the crankshaft from a junker 4/6/8 cylinder engine, turning it upside down, and firing the pistons out the bottom...
Salmonaxe  [Member]
7/9/2007 8:25:16 PM EST
Someone I know made a black powder cannon from a hydraulic cylinder. The inside diameter is just a little smaller than a golf ball.
cackman  [Team Member]
7/9/2007 8:44:53 PM EST
get yourself a piece of 1" WALL thick steel pipe. cap it off with at least 1" flat plate. or you could fab the plate into a dome shape if you wish. either drill a hole for the fuse or rig up a sparker for ignition. mount to something heavy enough to hold it down and now you have a cannnon. if you get real fancy w/the base you could prolly even aim it think something like manuel window cranks from an old car
fivepointoh  [Team Member]
7/9/2007 8:46:42 PM EST
I think he's already figured it out!!!

It was you wasn't it!!

www.ar15.com/forums/topic.html?b=1&f=5&t=595705
NMSight  [Team Member]
7/9/2007 8:53:58 PM EST
Haven't you read any of those Pat MsManus stories? All you need is sewer pipe
FrankSymptoms  [Team Member]
7/13/2007 1:45:42 PM EST
Oohhh.... you've got me thinking.... ohhhh... the neighborhood ain't gonna be safe now....
The_Reaper  [Team Member]
7/13/2007 1:55:44 PM EST

Originally Posted By FrankSymptoms:
I'd like to make a large Black Powder cannon barrel. I want it large enough to launch a beer can (filled with concrete) so I don't have to buy tons of lead and cast it.

Any ideas on how to bore the inside of such a cannon?


I've always wanted to launch an unopened can of Pepsi into the guy's house that lives
down the street. Like to see him explain THAT to the police.

How far can an unopened can fly before the pressure to launch will cause a muzzle burst?
Tango7  [Team Member]
7/13/2007 1:57:01 PM EST
IIRC "regular" pipe is usually Schedule 40. You want at least Schedule 80.

Excellent and simple explanation about pipe HERE


Pipe Stuff Explained
What your mother never told you about pipe and schedule thickness.

In sizes from 1/8-inch thru 12-inch, pipe is known by its nominal inside diameter, which differs somewhat from its actual inside diameter. Early pipe manufacturers made the walls in the smaller sizes much too thick, and in correcting this error in design, they took the excess from the inside to avoid changing the sizes of the companion fittings.

To distinguish pipe sizes from actual measured diameters, the terms iron pipe size (IPS) or nominal pipe size (NPS) are usually used. For sizes larger than 12-inch, pipe is known by its actual outside diameter. For all pipe sizes, the outside diameter (O.D.) remains relatively constant; the variations in wall thickness affect only the inside diameter (I.D.).

To distinguish different weights of pipe, three long standing traditional designations are used: standard wall (Std.), extra strong wall (XS), and double extra strong wall (XXS). These last two designations are sometimes referred to as extra heavy wall (XH), and double extra heavy wall (XXH).

For the purpose of standardizing pipe dimensions, the American National Standards Institute (ANSI) sponsored by the American Society for Testing Materials (ASTM) and the American Society of Mechanical Engineers (ASME), published ANSI B36.10. To broaden the range of wall thicknesses, schedule numbers from schedule 10 (S.10) thru schedule 160 (S.160) were adopted for steel pipe. These schedule numbers indicate approximate values for 1000 times pressure-stress ratios.



Originally Posted By NMSight:
Haven't you read any of those Pat MsManus stories? All you need is sewer pipe


Actually, if you did the "pipe in a pipe" trick and used iron pipe (say 2 1/2" or 3" as the inner, and 5 or 6" as the outer), and used concrete to fill the area between the two, it would probably work.

Theoretically speaking, PVC would also work as the inner, at least once or twice if the 'crete was strong enough.

If you try that though, I'll hold your beer for you at MSD (Minimum Safe Distance). Can I have your guns?
sgtgeo  [Team Member]
7/13/2007 1:59:56 PM EST
Soda can mortar barrel
BallisticTip  [Team Member]
7/13/2007 2:18:54 PM EST
I like cannons.
Hanz  [Team Member]
7/13/2007 2:23:02 PM EST

Originally Posted By sgtgeo:
Soda can mortar barrel


That is neat!
sgtgeo  [Team Member]
7/13/2007 2:27:15 PM EST

Originally Posted By Hanz:

Originally Posted By sgtgeo:
Soda can mortar barrel


That is neat!


I bought one of the smaller golf ball models from that guy check his other auctions

I have yet to fire it, It's super stout 5"tall, 3.5" base, 3" at the muzzle weighs over 12lbs!!!

got the fuse, had a difficult time finding real blackpowder locally finally found some
Noname  [Team Member]
7/13/2007 2:29:02 PM EST

How do I make a cannon barrel?







Not like this...
Kalahnikid  [Team Member]
7/13/2007 2:38:36 PM EST
Ive been wanting to do this for a while,

TAG!
st0newall  [Member]
7/13/2007 2:43:13 PM EST
you guys got it all wrong..


what you REALLY WANT IS A CHAIN CANNON...

chain cannon
91stsps  [Team Member]
7/13/2007 2:46:31 PM EST

Originally Posted By FrankSymptoms:
I'd like to make a large Black Powder cannon barrel. I want it large enough to launch a beer can (filled with concrete) so I don't have to buy tons of lead and cast it.

Any ideas on how to bore the inside of such a cannon?


Here is a build me and a bro made about 18 years ago, named it Painless after Jesse Ventura's mini gun in Predator.


We would use about 1/4 LB charge of FF blackpowder and it would launch a cement filled coffee can almost 3/4 of a mile!!!!!!!!!!!!!!!!!!!!!
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