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Offline LittleBigBoom

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My next cannon
« on: March 18, 2010, 10:07:33 AM »
Well, it had to happen... ::) ;D

After I finished my third .23 cannon, I was feeling confident, so I started looking at the cannon on cwartillery.org and found the third one down.

http://robinsonsbattery.org/67215.html

"6-pounder iron field gun, Model of 1834. Total length, 60.5 inches; weight, 835 pound."

So After a week of playing with it, I came up with this:
/>

This fits the picture exactly, so it should be right, but I wanted some other opinions on how it looks.

The only part I am not sure about is the muzzle. But I can't tell from the picture how it would be made.

So, What do y'all think?

Enjoy,
LBB

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Offline LittleBigBoom

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Re: My next cannon
« Reply #1 on: March 18, 2010, 10:14:26 AM »
I should add, I am not planing on building this full scale, it is just easier to draw...

LBB.
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Offline dan610324

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Re: My next cannon
« Reply #2 on: March 18, 2010, 10:42:33 AM »
the only thing I would change is the bottom of the bore
best is to have a full radius there
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Dan Pettersson
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better safe than sorry

Offline LittleBigBoom

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Re: My next cannon
« Reply #3 on: March 18, 2010, 02:08:56 PM »
Ta-da:



I think I should also move the touch-hole foreword a little, or angle it.

LBB
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Offline Double D

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Re: My next cannon
« Reply #4 on: March 18, 2010, 02:13:54 PM »
slight angle won't hurt.   Also use bbCode for pictures from My host pictures
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Offline Zulu

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Re: My next cannon
« Reply #5 on: March 18, 2010, 02:16:55 PM »
Should the angle be towards the rear or towards the front?  I would not bore it so deep and angle the touch hole towards the front.
Zulu
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Offline RocklockI

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Re: My next cannon
« Reply #6 on: March 18, 2010, 02:19:34 PM »
were the trunions below center line ? I think thats what Dan meant ????

ETA  Atually in the pic they are above centerline ????? Its shown upside down .

So you are correct they are below .
Gray
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Offline dan610324

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Re: My next cannon
« Reply #7 on: March 18, 2010, 02:51:05 PM »
nooo , I wasnt looking at the trunnions

just the radius in the end of the bore
that looks good now

place the vent where the bore goes from the sraight wall to the radius
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Dan Pettersson
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better safe than sorry

Offline Double D

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Re: My next cannon
« Reply #8 on: March 18, 2010, 03:46:05 PM »
THe vent sould be angle slightly rear ward.
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Offline GGaskill

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Re: My next cannon
« Reply #9 on: March 18, 2010, 04:16:18 PM »
You are talking about this one?

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Offline LittleBigBoom

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Re: My next cannon
« Reply #10 on: March 18, 2010, 04:36:47 PM »
Quote from: GGaskill on March 18, 2010, 04:16:18 PM
You are talking about this one?



Yes.



So here the vent has been moved and angled.

I also put a dashed red circle centered around the base of the bore. I see should not bore it that far, as the radius extends past the back of the cannon.

Thanks DD, I used the bb code.

LBB
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Offline seacoastartillery

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Re: My next cannon
« Reply #11 on: March 18, 2010, 05:16:10 PM »
     Little big Boom,    How about considering the Iron Field Gun Model 1836.  It's very close to the same size as the 1834 and you can use our photos we took of one in 2008 in Lancaster, NH to get the detail of the Cascabel and the Muzzle Swell and Muzzle Face.  The muzzle swell on the 1834 is not too pretty, but those are strictly your choices, not ours.  Just a suggestion, that's all.  Real glad to see you are making another one!

Good luck with it!

Mike and Tracy


You can see the very clean lines of the M1836 in this photo.




This M1836 was cast in 1837.




Having a Muzzle Swell very similar to the 1841 Bronze field gun, the Lancaster, NH Iron M1836 has also a very pleasing Muzzle Face Moulding treatment and a nice Muzzle Astragal with Filets.  We have seen lots of iron field guns around the country and point this one out as our favorite.

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Offline LittleBigBoom

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Re: My next cannon
« Reply #12 on: March 18, 2010, 05:53:43 PM »
Seacoast,

After seeing the 36 more clearly, I like it! It's more graceful than the 34. Of course not being fickle here... ::)

These pictures will sure help, do you have one with more detail of the cascabel?


Toby.
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Offline seacoastartillery

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Re: My next cannon
« Reply #13 on: March 18, 2010, 06:03:49 PM »
      You know Toby, I don't think we do, but I will check our deep archive file to be sure and I will add another posting if I find more.  Glad you like this one, it really is a fine looking field piece.  

Regards,

Tracy
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Smokin' my pipe on the mountings, sniffin' the mornin'-cool,
I walks in my old brown gaiters along o' my old brown mule,
With seventy gunners be'ind me, an' never a beggar forgets
It's only the pick of the Army that handles the dear little pets - 'Tss! 'Tss!

From the poem  Screw-Guns  by Rudyard Kipling

Offline seacoastartillery

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Re: My next cannon
« Reply #14 on: March 18, 2010, 07:03:43 PM »
    Toby,    These two photos should give you enough detail to know what the breech and cascabel area looks like.  The M1836 photo is not close enough to get super detail, so I have included a cascabel view of a bronze M1841 6 pdr. that Mike and I found at Fort Washington on the Potomac River.  The cascabel shape of these two is very, very close to being the same.  The smooth back of the cascabel is pitched outward at about 3 degrees as it goes down to the neck.

Hope that helps you,

Tracy and Mike






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Smokin' my pipe on the mountings, sniffin' the mornin'-cool,
I walks in my old brown gaiters along o' my old brown mule,
With seventy gunners be'ind me, an' never a beggar forgets
It's only the pick of the Army that handles the dear little pets - 'Tss! 'Tss!

From the poem  Screw-Guns  by Rudyard Kipling

Offline Max Caliber

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Re: My next cannon
« Reply #15 on: March 19, 2010, 03:33:25 AM »
Toby, Here is a very accurate drawing of the cascabel from the model 1841 6-pounder gun.


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Offline LittleBigBoom

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Re: My next cannon
« Reply #16 on: March 19, 2010, 09:55:46 AM »
Okay! thanks guys!

I will gather these pics up and modify my drawing a little to make it a '36.

Then I will post it to see what you all think.


Toby.
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Offline LittleBigBoom

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Re: My next cannon
« Reply #17 on: March 19, 2010, 07:20:30 PM »
Okay!

Thanks for all the Pictures!







My goodness she is thin! Not even a full bore thickness at the breach!

Also what is the bore on one of these cannon? I found three numbers: 3.5" and 3.6" and 3.68" and no reason along with any of them...
My thinking is 3.5" would not be a full 6lb, but 3.6" would, with 3.68 being almost proper windage for 3.6".

Anyway, I have it scaled to 3.5" so if I find out it is bigger I can simply scale it up to size.

So any improvements?

Toby.
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Offline GGaskill

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Re: My next cannon
« Reply #18 on: March 19, 2010, 08:42:46 PM »
My goodness she is thin!

All those barrels from the 1819 "Walking Stick" to the bronze 1840 six pounder seem to have been exercises in weight reduction (and cost reduction, too), some of them taking the exercise too far.  However, since you are building a steel one instead of cast iron or bronze, you should be OK.  Just go easy on the powder.
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Offline dan610324

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Re: My next cannon
« Reply #19 on: March 20, 2010, 12:01:47 AM »
when you decide what scale to do it in , then you can reduce the bore slightly to the closest suitable caliber , it will give you a little extra wall thickness

so lets say that you build it in 1/3 scale , then you could reduce the bore to 1"
that will give a little extra security

3,68 bore and 9,5 outer leaves just 79% wall thickness

most antique drawings I have seen have always had between 125 and 150% of the bore diameter as the wall thickness for cast iron cannons

it would be interesting to know how many of this model that blew up in action
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Dan Pettersson
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interested in early bronze guns

better safe than sorry

Offline Eyes Of Death

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Re: My next cannon
« Reply #20 on: March 20, 2010, 06:06:01 PM »
Mike and Tracy  Seeing that M1841 6-ponder gives me the itch to make one. But my wife will make me sell one of my cannons for baby dippers. I just so happen to have a chunk of shaft that will make a half scale one. But it has a step down section that will make it to small for the muzzle swell. I wonder if I could make a collar, heat up  and shrink fit it on and then tig in place and finish. ???
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Offline GGaskill

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Re: My next cannon
« Reply #21 on: March 20, 2010, 06:19:06 PM »
If you are going to weld it, I don't see any need to shrink fit it.
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Offline Eyes Of Death

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Re: My next cannon
« Reply #22 on: March 20, 2010, 06:34:36 PM »
Just over kill I guess.
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