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Grape Shot

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Grape Shot

Unread postAuthor: critical_al » Tue Feb 12, 2008 4:23 pm

Hi,

I'd love to say it was all my own work, but although the idea and some of the detail was mine I am nowhere near skilled enough to make something like this. I needed this at short notice to take to a party and the design brief was to build a (relatively) safe indoor combustion cannon that would fire non-lethal ammunition. It also need to be broken down into small sections so that it could be smuggled into a formal dinner. So, less than a week later this arrived in the post from my dad! It fires grapes out to about 130ish metres outdoors, indoors they simply explode when they hit a wall and leave a stain. Although they will punch through ceiling tiles and leave quite a bruise (unintentionally, honest).

Would love to hear what you think of this.

Critical_Al
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Attachments
2.jpg
This is it in parts prior to assembly, the barrel just screws together, with rubber washers to seal it.
1.jpg
All assembled, about 3'6" tall.
3.jpg
Its all brass because it went nicely with the shell cases, plus it looks nice and shiney smile.gif
The gas cylinder is hidden away inside the 2nd largest shell-case.
4.jpg
The cases are marked 1918 Karlsruhe, Germany on one and British 1943 on another, the 20mm case was found on a bombing range last year.
5.jpg
Fairly standard metering and piezo electric ignition.

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Unread postAuthor: LikimysCrotchus5 » Tue Feb 12, 2008 4:26 pm

Wow, shiny and reliable, 2 in one deal.

No need to paint too.

You need to use different ammo than grape, and you should maybe hybridize that, but i dont know the max psi of brass.
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Unread postAuthor: psycix » Tue Feb 12, 2008 4:27 pm

Whoa thats one nice shiny cannon :)
Love the blingbling look of it :D

Awesome it surely is
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Unread postAuthor: dewey-1 » Tue Feb 12, 2008 4:44 pm

--!
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Last edited by dewey-1 on Sun Apr 20, 2008 11:49 am, edited 1 time in total.
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Unread postAuthor: Maniac » Tue Feb 12, 2008 4:45 pm

It looks like some civil war cannon and really you do need to find a new ammo. Do you know what size barrel it is?
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Unread postAuthor: Fnord » Tue Feb 12, 2008 5:02 pm

"Steampunk" comes to mind.

That's really the craziest thing I've seen all day (maybe all week).
It looks like some kind of grand prize trophy for a contest we might hold here :)

Great job (whoever).
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Unread postAuthor: paaiyan » Tue Feb 12, 2008 5:36 pm

It's nice looking, although I have to say, I was thinking the cannon kind of grapeshot when I read the title.
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Unread postAuthor: jrrdw » Tue Feb 12, 2008 5:54 pm

Looks like some controls out of a old style steam powered locomotive engine. The valveing and such. Thats nice ass cannon!

Now that you have it, keep it by NOT sneeking it into any kind of socail function just to wind up in some kind of trouble giving the hobby a bad name.

Dude think about it, you don't get something this nice as easy as it sounds like you got this every day. Don't be dumb! Keep this nice peice and yourself out of trouble.

You truely have one of a kind.
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Unread postAuthor: MaxuS the 2nd » Tue Feb 12, 2008 7:24 pm

I remember seeing this on the UKSGC perhaps a year or so ago, or maybe it was a similar one.

But whatever, it truely is a piece of art.

Edit: Found it. http://www.uksgc.co.uk/forums/index.php?showtopic=1309&hl=brass
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Unread postAuthor: Ragnarok » Tue Feb 12, 2008 7:34 pm

Yes, this is indeed the same cannon off the UKSGC.
But that doesn't make it any less beautiful or unique. I am rather envious to be honest - fortunately, I can pretend that because it's a combustion, it doesn't matter too much.

So, jddrw, that means the social function in question is long in the past.

@paaiyan: Grape shot has been a long term joke at my house, because grapes were one of the earliest ammunitions I used on a regular basis. They don't get used much any more, because I found that high pressures and fast valves (which is all I do these days) would turn them into wine before they left the barrel unless they were frozen solid.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: POLAND_SPUD » Tue Feb 12, 2008 7:39 pm

looks so.... hmmm... brass ??!! (?)

I was hoping this post is about a real grape shot.... you know lots of metal stuff fired at once... intended to work as a shotgun shell.... anyone here likes firing 10 nails at once ?? :D
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Unread postAuthor: rna_duelers » Tue Feb 12, 2008 9:56 pm

Wow,that's beautiful.Love the brass look it amazing,hope you look after that thing.
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Unread postAuthor: ralphd » Tue Feb 12, 2008 10:17 pm

It's also an expresso machine. Right?
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Unread postAuthor: Launch-Tek » Tue Feb 12, 2008 10:22 pm

It looks like it should be in a glass case at a museum.
The builder is an artist.
And as always shiny things look cool. 8)
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Unread postAuthor: jackssmirkingrevenge » Wed Feb 13, 2008 12:23 am

_Fnord wrote:"Steampunk" comes to mind.


Very much, beautiful :)
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