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Author Topic: Thundermug.  (Read 679 times)

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Offline oyvind

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Thundermug.
« on: June 07, 2009, 11:17:09 AM »

Thundermug It has an inside diameter 50mm 240mm length.
Thundermug barrel wall thickness 37mm off A633gr.ST52 Built from a solid.
128mm autside and 50mm bore diameter

And one have inside diameter 38mm and 200mm length and barrel wall thiknes 30mm.
Gun vil be made from solid steel.99mm autside and 38mm bore
No projectile,only salut.

 How much black povder (fg powder) for safe firing.
600-700 grains?


Mvh

Oyvind


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Offline Cat Whisperer

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Re: Thundermug.
« Reply #1 on: June 07, 2009, 12:04:19 PM »
Øyvind -

WELCOME to the board!  I'll have to look up the ASME equivalent steel.  Do you have any pictures or drawings?

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Tim K                 www.GBOCANNONS.COM
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Offline Cat Whisperer

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Re: Thundermug.
« Reply #2 on: June 07, 2009, 12:17:43 PM »
A633
A633 is a normalized high-strength low-alloy structural steel plate. It is suited for service at low ambient temperatures of –50°F or higher where notch toughness better than expected is desired.

Mechanical Properties SA633:
Tensile: Up to & Inc 2.5”: 70 to 90 ksi Over 2.5” to 4”: 65 to 85 ksi
Yield: Up to & Inc 2.5”: 50 ksi min Over 2.5” to 4”: 46 ksi min

Interesting stuff.  I LIKE the high notch toughness for cannons/mortars.

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Tim K                 www.GBOCANNONS.COM
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Chief of Smoke, Pulaski Coehorn Works & Winery
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Offline oyvind

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Re: Thundermug.
« Reply #3 on: June 08, 2009, 10:25:32 AM »
Hei




Mvh

Oyvind
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Offline Cat Whisperer

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Re: Thundermug.
« Reply #4 on: June 08, 2009, 03:50:47 PM »
WOW; that explains it well!

I would change the form from drill-point to hemisphere bottom of the bores.  That would eliminate the sharp corner (stress riser) and make it stronger.

The dimensions look good. 

I have NO experience with more than one bore being fired at the same time - other than in using the technique of multiple charges to split rock.  Having said that, I wonder about the strength when firing one or more at the same time.

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Tim K                 www.GBOCANNONS.COM
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N 37.05224  W 80.78133 (front door +/- 15 feet)

Offline RocklockI

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Re: Thundermug.
« Reply #5 on: June 10, 2009, 05:21:38 AM »
Oyvind welcome to the board !

that looks like a great noise maker ,you can have your own volly with one mug  ;D

gary
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"I've seen too much not to stay in touch , With a world full of love and luck, I got a big suspicion 'bout ammunition I never forget to duck" J.B.

Offline dan610324

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  • bronze cannons and copper stills ;-))
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Re: Thundermug.
« Reply #6 on: June 10, 2009, 10:57:27 AM »
hejsan Öyvind
var kommer du ifrån ??
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Dan Pettersson
a swedish cannon maniac
interested in early bronze guns

better safe than sorry

Offline oyvind

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Re: Thundermug.
« Reply #7 on: June 16, 2009, 04:33:37 AM »
Hey, I've revudert project, and will use single Thundermugs. Materials selection is 42CRMO4 or 34CRNIMO6 (SIS 2541)
Security is first priority.
wall thickness is the same as caliber, or a little thicker.
there are three different sizes 30x95x220mm
40x130x260mm and 50x155x300mm total length.
They will only be used to salute.

Mvh
 :)
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