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cannonmn 01-24-2020 11:24 PM

In my opinion it is mid-20th C, almost certainly a one-off. I havenít seen anything much like it. For whatever thatís worth. But it is pretty clear that the builder combined ďfoundĒ items to make the carriage. I hope you can find someone knowledgeable to check out the tube to see whether it can be fired or not.

northwoodneil 01-25-2020 06:30 AM

Quote:

Originally Posted by cannonmn (Post 2056003324)
In my opinion it is mid-20th C, almost certainly a one-off. I havenít seen anything much like it. For whatever thatís worth. But it is pretty clear that the builder combined ďfoundĒ items to make the carriage. I hope you can find someone knowledgeable to check out the tube to see whether it can be fired or not.

How would an expert determine the barrel is safe? Do they just scope it and visually inspect or is it mag-na-fluxed or x-rayed ? Just wondering.

double d 01-25-2020 07:38 AM

If I were home I would go dig out my copy of Switlik's The More Complete Cannoneer. I think he has a chapter on Barrel inspection. But I not home right now so I can't go look.

Seems to me that chapter included instructions on how to make an inspection mirror.

Oh I wish Switlik would reprint that book.

Problem with a mirror of a borescope anybody can run one down a bore, but not very many people know what they are looking at.

I agree with Cannonmn about this cannon. If that is a 2.5" bore, this is a monster gun.

NMPaul 01-25-2020 07:42 PM

Help identify cannon I just bought
 
1 Attachment(s)
I have a post already about cannon, but, really trying to figure out its origin, so thought new thread may get some ideas.

I am already leaning towards this being a replica for several reasons. Lots or ornate extras I would not expect on a military cannon, some hex bolts and some square, and small diameter barrel with no rifling.

I have been looking at cannons on google every night and I have yet to see one with these wheels on the train like this one. I would not think they would be very practical in the field (another reason I think its a replica)

Has anyone seen a cannon with similar wheels on the train like this. Thanks
https://www.go2gbo.com/forums/attach...1&d=1579999288

cannonmn 01-26-2020 04:59 PM

What happened? I did a detailed post on his other thread and poof it is gone, oh well, Iíll summarize it. Weigh tube, get tube displacement in water, divide, have the S.G., if less than that of cast iron, tube not shootable. The muzzle face looks to be separate plate, thereís a joint behind it where a possible pipe joins it. The non-visible volume of the tube may be hollow, and the S.G. Number will show that. Donít try and shoot it until you are sure Iím wrong about the tube Being a hollow decorator yard cannon.

cannonmn 01-26-2020 05:08 PM

1 Attachment(s)
Photo

double d 01-26-2020 05:10 PM

You are already getting answers and second post isn't going get different answers. I merged your two Post together so all the information is on one spot and easier to find for researchers.

It is not an original Civil War, Napoleonic War or Indian war gun in anyway, shape or form.

This is a very interesting gun that someone put a lot of work into. The size and detail indicate something thing more th a garage hobbyist effort. It appears the barrel was acquired and then the carriage was built for the barrel.

Look under those caps on the end of the trunnions for markings.

The bore diameter to muzzle diameter says modern made, that jumps out at you. The Archibald hub wheels where used late 19th century early 20th century for supply wagons and artillery. The only example I could find had rubber tire not steel

http://www.hansenwheel.com/store/arc...eels-4829.html

NMPaul 01-26-2020 10:08 PM

Quote:

Originally Posted by double d (Post 2056004058)
You are already getting answers and second post isn't going get different answers. I merged your two Post together so all the information is on one spot and easier to find for researchers.

It is not an original Civil War, Napoleonic War or Indian war gun in anyway, shape or form.

This is a very interesting gun that someone put a lot of work into. The size and detail indicate something thing more th a garage hobbyist effort. It appears the barrel was acquired and then the carriage was built for the barrel.

Look under those caps on the end of the trunnions for markings.

The bore diameter to muzzle diameter says modern made, that jumps out at you. The Archibald hub wheels where used late 19th century early 20th century for supply wagons and artillery. The only example I could find had rubber tire not steel

http://www.hansenwheel.com/store/arc...eels-4829.html

Thanks for combining posts, was not seeing replies, and now this evening seeing all of them. I guess no email notification.
I agree not a military cannon. Maybe some kind of ceremonial or replica of some kind.

The wheels on the train. Do they mean anything to you. I cant find anything similar at all on the internet. Thanks

NMPaul 01-27-2020 07:28 AM

3 Attachment(s)
https://www.go2gbo.com/forums/attach...1&d=1580127627
https://www.go2gbo.com/forums/attach...1&d=1580127656


Picture of homed bore cleaner I made after racking my brain with amazon trying to figure out how to clean out the bore that was filled with rust and chipmunk stash

This is where I need some help. this looks to me like a threaded insert for the touch hole. I am only about 60% sure it is a threaded insert. Would this mean barrel is NOT cast iron????

The insert was covered with and epoxy I believe to protect it. This is all my supposition. I would really love to hear from someone with experience with how these barrels are put together.

There was a small shard of metal when I scraped away the epoxy. It had to be bent with my fingers 3-4 times before it would break off. This is not how I understand cast iron works. I could be wrong about this. love to hear anyones prior knowledge or experience. I am not new to restoring items, but, I am new to cannons.
thanks in advance

cannonmn 01-27-2020 01:47 PM

Not sure how much more time and effort you want to spend working on these details, up to you of course. I’m almost positive the tube is hollow between the pipe-bore and the outer wall of the tube.

What you want to do is dismount the tube and weigh it. Then measure the outside dimensions of the tube, approximately. Then get a friend who is good at math to calculate the tube outside volume in cubic feet. Then subtract the bore volume. Then divide weight by volume to get density in say, pounds per cubic foot. If piece is real cast iron the number should be about 490 lbs/ft3. If it is way less it is hollow.


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