The Alamo, And so it begins. - Page 5 - Graybeard Outdoors
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post #41 of 226 (permalink) Old 05-01-2019, 07:06 PM Thread Starter
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Originally Posted by northwoodneil View Post
Are you using it as a form or do you need to make a part out of it? Wait, lights are coming on. To weld the trunnions too?

CORRECT!!
The O.D. of the barrel at the trunnions is 11.8"
I have to line the trunnion collar with a rubber membrane.
A 12" I.D. piece of pipe would be perfect!


It has to be weldable.
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post #42 of 226 (permalink) Old 05-01-2019, 07:08 PM
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Pipe or tube? I have the piece from the Giveaway here but I think it is only around 8" ID


I could stop by my buddies well/irrigation shop this week or next and see if there is a chance he may have something 12"ID. Also friends have a Sand/Gravel pit too. They may have something from the dredge that may be that large. Both sorta a long shot. But will look anyway if you want.



Speedy metals stops just short of 12 Inch ID.
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post #43 of 226 (permalink) Old 05-01-2019, 07:15 PM Thread Starter
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Pipe or tube? I have the piece from the Giveaway here but I think it is only around 8" ID


I could stop by my buddies well/irrigation shop this week or next and see if there is a chance he may have something 12"ID. Also friends have a Sand/Gravel pit too. They may have something from the dredge that may be that large. Both sorta a long shot. But will look anyway if you want.



Speedy metals stops just short of 12 Inch ID.

12" I.D. X 3/8" wall, weldable pipe. Pretty common piece. 7" wide.
Thanks Bruce.


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post #44 of 226 (permalink) Old 05-01-2019, 07:43 PM
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I will let you know. Will look tomorrow.. I would like to say I helped build this Beast,LOL
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post #45 of 226 (permalink) Old 05-01-2019, 07:54 PM
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If all else fails I have a machine shop near by that could probably roll that piece. I also have one of the biggest metal suppliers in my state right here in my little town. I'll ask around.

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post #46 of 226 (permalink) Old 05-01-2019, 11:06 PM
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Default Trunnion Collar

I am not familiar with a trunnion collar. Are you making something like what is pictured below to slip on the barrel and replace the broken trunnions?
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post #47 of 226 (permalink) Old 05-02-2019, 07:47 AM Thread Starter
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I am not familiar with a trunnion collar. Are you making something like what is pictured below to slip on the barrel and replace the broken trunnions?

Fredstaple,
Not exactly like those but more like a half collar.
The trunnions will have to be partially hollowed out so they fit over the broken stubs on the barrel.


I have a drawing. I will see if I can get it scanned and post a picture.
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post #48 of 226 (permalink) Old 05-02-2019, 08:54 AM
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Michael,

Are you making plans to in some way to identify that collar as a contemporary bracket made to hold the barrel. We wouldn't want some historian looking at that gun in 150 years and suggesting the Texans made that collar to put the gun a back in action after Santa Ana destroyed it.
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post #49 of 226 (permalink) Old 05-02-2019, 09:17 AM Thread Starter
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No Douglas,
There are no plans to identify the collar.
I am stuck with what there is. The collar has to go where the broken trunnions are.
In front of them or behind them would affect the preponderance and I can't do that.


Understandably, I am not allowed to modify the barrel in any way other than a bolt on collar.


Try as I might, the collar is going to be "IN YOUR FACE".


Freshly machined steel painted black over a very deeply pitted barrel.


My lovely assistant will scan my drawing in today and I'll get it posted up here.
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post #50 of 226 (permalink) Old 05-02-2019, 09:28 AM
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Get some steel stamps, and on the bottom of the collar in an inconspicuous area, like maybe the edge, where it can't be seen, stamp your initials and the date M.E. 05/02/2019. Only the new made band you make, do nothing to the cannon

Historians are theory driven, and interpret facts often to suit their opinion.
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