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Offline mowhawky

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My first shot
« on: June 15, 2011, 02:10:34 PM »
Hello to everyone. This is my first post and after seeing this board and all the knowledge here, it won't be my last. I just completed building the carriage for my first Cannon. The cannon is a French Indian War replica English style. It is 23" overall. Made from solid 8620 stock weighing in at 56lbs. The bore is 1 3/8". If anyone has some tips, constructive criticism or anything else for that matter please let me know. I look forward to it.
Thanks. Pat



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Offline subdjoe

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Re: My first shot
« Reply #1 on: June 15, 2011, 03:02:27 PM »
Welcome aboard!  And that looks like darned nice work. 

Do you intend to shoot blanks or projectiles?  Does it have a liner?  Have you read the sticky about safe loads? 

And, most importantly,

What is the air speed velocity of an unladen swallow?
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Offline mowhawky

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Re: My first shot
« Reply #2 on: June 15, 2011, 03:20:22 PM »
Quote from: subdjoe on June 15, 2011, 03:02:27 PM
Welcome aboard!  And that looks like darned nice work. 

Do you intend to shoot blanks or projectiles?  Does it have a liner?  Have you read the sticky about safe loads? 

And, most importantly,

What is the air speed velocity of an unladen swallow?

Thanks for the compliment. I will be shooting blanks only for now. I do not want to shoot any projectiles until I learn much, much more. There are no second chances if something goes wrong.

It does not have a liner. From what I have gleaned so far, it does not require one. Please fix me if I am wrong. I did read the information about safe loads and have a VERY healthy respect for fire arms and explosives. I am 42 years old and have enjoyed life up to this point to much to place it in jeprody. The safe load looks to be 400 grains of FF powder.

The velocity of an unladen swallow is directly proportionate to the velocity of a laden one.  ;)
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Offline RocklockI

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Re: My first shot
« Reply #3 on: June 15, 2011, 03:27:17 PM »
Welcome as well ! Thats a nice looking rig ! ;)

I like the carriage it looks modeled after a small VOC gun with a tall carriage to still be served by the crew .

Are those trunions on center ?

I dont think it needs a liner being solid steel .

Gary
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Offline gunsonwheels

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Re: My first shot
« Reply #4 on: June 15, 2011, 03:49:00 PM »
mowhawky,

Quote
Do you intend to shoot blanks or projectiles?  Does it have a liner?  Have you read the sticky about safe loads? 

The answer regarding your "liner" is yes... it's 8620 and the alloy can be researched on the web.

http://www.suppliersonline.com/propertypages/8620.asp#chemistry

Actually the more important data relates it's strengths:

Tensile strength (annealed)  536  MPa  77800  psi 
Yield strength (annealed)  357  MPa  55900  psi 

Or in other words it has more usable strength than 1018 or A-36 steels.

So who do I contact to get a barrel machined from such a nice alloy?
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Offline mowhawky

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Re: My first shot
« Reply #5 on: June 15, 2011, 04:11:52 PM »
Quote from: gunsonwheels on June 15, 2011, 03:49:00 PM
mowhawky,

Quote
Do you intend to shoot blanks or projectiles?  Does it have a liner?  Have you read the sticky about safe loads? 

The answer regarding your "liner" is yes... it's 8620 and the alloy can be researched on the web.

http://www.suppliersonline.com/propertypages/8620.asp#chemistry

Actually the more important data relates it's strengths:

Tensile strength (annealed)  536  MPa  77800  psi 
Yield strength (annealed)  357  MPa  55900  psi 

Or in other words it has more usable strength than 1018 or A-36 steels.

Gunsonwheels, this is going to sound stupid but do you mean "yes" as in it has a liner or "yes" that it needs a liner. I think you are telling me that the entire cannon can be considered the liner.
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Offline mowhawky

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Re: My first shot
« Reply #6 on: June 15, 2011, 04:16:37 PM »
Quote from: RocklockI on June 15, 2011, 03:27:17 PM
Welcome as well ! Thats a nice looking rig ! ;)

I like the carriage it looks modeled after a small VOC gun with a tall carriage to still be served by the crew .

Are those trunions on center ?

I dont think it needs a liner being solid steel .

Gary

Hey Gary, Thanks for the compliment. The trunnions are on center. The caps are not. I flushed them to the out side. They are not quite as wide as the trunnions themselves.

The carriage I designed from memory of gun drills I did while onboard the USS Constitution and from pictures of other carriges. It is a bit different in that it has a taller initial profile before elongating aft. I elongated it in the rear to make up for the increased hieght to avoid possible fliping.

Pat
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Offline gunsonwheels

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Re: My first shot
« Reply #7 on: June 15, 2011, 04:33:19 PM »
I'm sorry as usual...
mowhawky

No it does not need a liner OR the whole barrel could be considered "the liner" if someone is "liner happy".  Maybe it's a case of knowing your audience and telling them what they want to hear.  :)  :D

That isn't just beautiful it's "drop dead gorgeous" and to guys like me the machined alloy barrel is a goodly part of that gorgeous.

I just bought pool ball seconds for $10 a set and they would shoot nicely out of it (at 2.25" nominal they are a little smallish or you have generous "windage" depending on your point of view).
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Offline Double D

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Re: My first shot
« Reply #8 on: June 15, 2011, 04:56:49 PM »
Quote from: mowhawky on June 15, 2011, 04:11:52 PM
 
Gunsonwheels, this is going to sound stupid but do you mean "yes" as in it has a liner or "yes" that it needs a liner. I think you are telling me that the entire cannon can be considered the liner.

Your entire cannon is a liner, you don't need a liner.
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Offline subdjoe

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Re: My first shot
« Reply #9 on: June 15, 2011, 05:05:20 PM »
Quote from: mowhawky on June 15, 2011, 03:20:22 PM
Quote from: subdjoe on June 15, 2011, 03:02:27 PM
Welcome aboard!  And that looks like darned nice work. 

Do you intend to shoot blanks or projectiles?  Does it have a liner?  Have you read the sticky about safe loads? 

And, most importantly,

What is the air speed velocity of an unladen swallow?

Thanks for the compliment. I will be shooting blanks only for now. I do not want to shoot any projectiles until I learn much, much more. There are no second chances if something goes wrong.

It does not have a liner. From what I have gleaned so far, it does not require one. Please fix me if I am wrong. I did read the information about safe loads and have a VERY healthy respect for fire arms and explosives. I am 42 years old and have enjoyed life up to this point to much to place it in jeprody. The safe load looks to be 400 grains of FF powder.

The velocity of an unladen swallow is directly proportionate to the velocity of a laden one.  ;)

((smacks self on forehead))  DUH!!!

You said it right there in the first post "Made from solid 8620 stock"  and it just went zipping past over my head.   As they say, some days you're the statue.
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Your ob't & etc,
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Offline seacoastartillery

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Re: My first shot
« Reply #10 on: June 15, 2011, 05:36:25 PM »
     Mowhawky,   I like the look of the tube a lot and the carriage looks very well done.  8620 is one of the best of the "Ordnance" steels having two qualities that endear it to ordnance designers and shooters alike.  First, it has the strength to do an excellent job of remaining intact after thousands of firings, even in an annealed condition.  Second, it has a unique place among the alloy steels in that it can be surface hardened for extremely slick sliding surfaces as in a semi or full auto design.  The M-1 Garand was certainly one of the most famous Battle rifles of all time and this steel was used to make it's receiver.  As slick as a 30-40 Krag and strength to spare is not a bad combination for a firearm to have.

Tracy
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Offline Cat Whisperer

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Re: My first shot
« Reply #11 on: June 16, 2011, 02:08:25 AM »
8620 is the steel spec'd for M-16 BOLTS.  TOUGH stuff!  (Overkill)  :) :) :) :)
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Offline mowhawky

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Re: My first shot
« Reply #12 on: June 16, 2011, 04:38:26 AM »
Thanks everyone for the welcome and the information you have passed on. I am waiting patiently for my powder to get here next week. Anyone have any ideas with regard to a worm for the bore of 1 3/8 inch?? I'm hoping someone may have one I can purchase so I don't have to try to fab one. It looks like a bit of a pain.

Thanks

Pat
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Offline dan610324

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Re: My first shot
« Reply #13 on: June 16, 2011, 04:43:55 AM »
how about half a valve spring on a dowel ??
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Offline RocklockI

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Re: My first shot
« Reply #14 on: June 16, 2011, 07:25:28 AM »
OR give Dominick a call he will probably fix you up . ;).

Gary
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Offline mowhawky

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Re: My first shot
« Reply #15 on: June 16, 2011, 01:04:04 PM »
Quote from: RocklockI on June 16, 2011, 07:25:28 AM
OR give Dominick a call he will probably fix you up . ;).

Gary

All good suggestions everyone although I don't know who Dominick is.  ;)
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Offline RocklockI

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Re: My first shot
« Reply #16 on: June 16, 2011, 01:40:45 PM »
He is a sponser Dom Carpenter he make fine stuff ! 8)

Gary
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Offline Double D

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Re: My first shot
« Reply #17 on: June 16, 2011, 02:33:57 PM »
Here is a link to  Dominick website.   http://blackpowder-cannons.com/index.htm
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Offline gulfcoastblackpowder

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Re: My first shot
« Reply #18 on: June 17, 2011, 02:42:00 PM »
Kind of hard to tell - is it painted, blued, or parkerized?  Beautiful barrel and carriage to match!  Did you make the barrel yourself?
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Offline mowhawky

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Re: My first shot
« Reply #19 on: June 17, 2011, 05:03:04 PM »
Quote from: gulfcoastblackpowder on June 17, 2011, 02:42:00 PM
Kind of hard to tell - is it painted, blued, or parkerized?  Beautiful barrel and carriage to match!  Did you make the barrel yourself?
It's painted for now. I am planning on powder coating it. Thanks. The barrel was made by a guy in Oregon. I don't have any machine that would come close to making something like that.
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Offline Double D

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Re: My first shot
« Reply #20 on: June 17, 2011, 05:32:42 PM »
Which guy in Oregon?
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Offline gunsonwheels

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Re: My first shot
« Reply #21 on: June 17, 2011, 05:45:38 PM »
DD:
Quote
Which guy in Oregon?

Yeh... which guy and maybe (I hope) some contact info..??

GOW
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Offline dittles

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Re: My first shot
« Reply #22 on: June 17, 2011, 06:38:56 PM »
Quote from: dan610324 on June 16, 2011, 04:43:55 AM
how about half a valve spring on a dowel ??

 That is what I made mine out of and it seems to work just fine. I used the whole spring and heated one end up in order to make it a little larger in diameter.  The other end of the spring I did the opposite so that it was a hair smaller than the diameter of the dowel. Then all I had to do was just twist it onto the dowel. It fits tight on the dowel and it holds.
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Offline mowhawky

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Re: My first shot
« Reply #23 on: June 17, 2011, 07:20:43 PM »
Quote from: gunsonwheels on June 17, 2011, 05:45:38 PM
DD:
Quote
Which guy in Oregon?

Yeh... which guy and maybe (I hope) some contact info..??

GOW

This is the guy's website. He says he is retired but makes one or two a year. He was very friendly and easy to work with.

http://www.users.qwest.net/~cannonmike/
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Offline Cat Whisperer

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Re: My first shot
« Reply #24 on: June 18, 2011, 02:30:40 AM »
Hmm.  Moulds too.
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Offline Double D

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Re: My first shot
« Reply #25 on: June 18, 2011, 03:59:05 AM »
Cannon Mike has been on our link like list for a long time....
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