So I found this old cannon at an antique sale..... - Graybeard Outdoors
 
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post #1 of 7 (permalink) Old 09-08-2019, 06:33 PM Thread Starter
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Default So I found this old cannon at an antique sale.....

as a child, there was a guy in the neighborhood with a signal cannon. I was hooked and have been wanting one for 35 years. I found one all rusty and rotted into the ground. I brought it home and cleaned it up as best I could. Can anyone tell me anything about it? No markings solid steel super heavy. 1 1/2 inch bore. It was full of mud so I would def like to hone the bore. I know nothing about cannons and was hoping for a bit of wisdom from the greybeards! Thanks in advance for any help given. I attached a few pictures.
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post #2 of 7 (permalink) Old 09-08-2019, 06:38 PM Thread Starter
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few more.
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post #3 of 7 (permalink) Old 09-08-2019, 07:13 PM
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What see is a piece of round stock steel with a hole bored down the center. Not a profiled cannon.

The rule of thumb is that the barrel diameter over the breech should 3 times the bore. With a 1.5 inch bore, the barrel should be 4.5 inches in diameter. If you had the correct type steel, you could go smaller.

If this were 1018 steel, then I might be leery. If your steel is 4140, I would say good to go. Since the steel is unknown I can't say one way or there about firing this.

The other issue is the trunnions. We can't see their size but more important we can't see how they are attached to the barrel. How about some pictures.

It appears you built a new carriage. Very clever "revolutionary war" interpretive carriage. Doesn't look to bad at all. You got a set old wheels, did you get the axle also? It look like you adapted a farm implement axle and wheels to you new carriage. If you got the original axle what was its length. The current axle is over long and may flex and bend. You can see the original mounting holes in current axle.

What you have is a lot like what a lot of us have started with. Welcome to the club.
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post #4 of 7 (permalink) Old 09-08-2019, 09:27 PM
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I have limited experience in black powder cannons, but it looks like you have made a nice and simple, but attractive carriage. What jumps out at me was mentioned above. The axle seems too wide. If you could reduce it by 3-4 inches on each side I think it would help the overall look. Seems like a cylinder hone would work to clean up your bore.
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post #5 of 7 (permalink) Old 09-08-2019, 10:38 PM Thread Starter
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The Trunnions are welded to the sides of the barrel. The axle was on the orig carriage I found the wheels at a yardsale and made them work for this application they are off of a very old industrial cart of some sort.. Cutting the axle down and rewelding it would be no problem at all I just have no experience with this stuff and had no idea what width I should run it. How could I determine the quality of steel? it seems ridiculously heavy to me. lol. I would only use this to make noise never a projectile. Without a projectile would this size cannon recoil very much? What I'm getting at is if its only used to make a report would the trunnion mounting and barrel thickness really pose an issue with a smaller charge. Again I'm as green as they come I'm probably asking dumb questions. Thanks for the compliment on the carriage I was totally winging it!
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post #6 of 7 (permalink) Old 09-09-2019, 06:49 PM
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Without a projectile it would not recoil much at all, but, as I've learned here many times over what you do with it and the next guy does with it are 2 different things. That cannon will probably out live you by a couple generations but what if a great grand child was to load it to the max with a 1 1/2 lead ball? Better safe then sorry. Some scrap yards have a tool to check which steel is which. If the trunnions are welded that dates it to later then 1881 (probably much later). Just my thoughts.

ďI won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them.Ē

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post #7 of 7 (permalink) Old 09-10-2019, 08:52 AM
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Quote:
Originally Posted by northwoodneil View Post
If the trunnions are welded that dates it to later then 1881 (probably much later). Just my thoughts.
What Neil means is 1881 is when it is generally accepted that welding was invented. Welding can be a poor way or a good what to attach trunnions. There is a right way and a wrong way.
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