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el cañón de la combustión de 55mm

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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Unread postAuthor: Ragnarok » Mon Nov 17, 2008 9:37 pm

CasinoVanart wrote:Last planned project?

In Spain I believe, not on Spudfiles.

Ah, another patent JSR contraption I see. Made out of twine and chewing gum, and the repeated forgetting of why most people make things serviceable. :D
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: CasinoVanart » Mon Nov 17, 2008 10:57 pm

Ragnarok wrote:
CasinoVanart wrote:Last planned project?

In Spain I believe, not on Spudfiles.


Well thats a load off, we wouldn't want the grand master going AWOL would we!!
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Unread postAuthor: Ragnarok » Mon Nov 17, 2008 11:57 pm

CasinoVanart wrote:Well thats a load off, we wouldn't want the grand master going AWOL would we!!

Grand master of what exactly? Murphy's spudguns?
"Matter will be damaged in inverse proportion to its accessibility for replacement"?

Yeah, he's got a lot of great ideas... but I'm still holding the betting pool on how many times he does this before he decides to make more serviceable designs. :roll:

I kid... mostly. :D
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 18, 2008 2:58 am

Ragnarok wrote:Ah, another patent JSR contraption I see. Made out of twine and chewing gum, and the repeated forgetting of why most people make things serviceable. :D


That's araldite and lollypop sticks to you, Sir.

Have you tried pressing the little button on top?


Dammit, of course!

wanker :D

I rigged it up good with more chewing gun like, testing in a few hours after work. The piezo is a bit tired though, if this doesn'twork I'll buy two new lighters and rig up a twin sparker mechanism with a common button. I cannot afford to fail at simple combustion, dude! srsly!

"Matter will be damaged in inverse proportion to its accessibility for replacement"?


I love proving this law :D it should be called "Jack's law".

Well my previous big combustion was perfectly servicable, but with my limited facilities I didn't look up a suitable threaded fitting this time around.

Image
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Unread postAuthor: Ragnarok » Tue Nov 18, 2008 11:22 am

Fine, crepe paper, sparkly sprinkles and PVA glue then. :P

jackssmirkingrevenge wrote:It should be called "Jack's law".

And thus, it is dubbed "Jack's access and restricted serviceability effect" - or "Jack's ARSE" for short. :D
(NOT jackass)
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Unread postAuthor: SpudFarm » Tue Nov 18, 2008 12:10 pm

i can't understand why you don't just make a camera cap/coil setup. wire it nicely in a box made out of Jack's (tonio's) materials and run two wires out of it.

perfect ignition for every gun you could think of.

that said, i laugh at your face for failing on that one ;)
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 18, 2008 12:25 pm

Woohoo! it worked!

:D

but in true sod's law style, failed when I went to take a vid of the third shot O_o

I'm adding another ignitor anyway to get more reliable ignition.
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Unread postAuthor: CasinoVanart » Tue Nov 18, 2008 3:09 pm

We want the vids as proof! My guess is that you failed horribly and are lieing your ass off as to not look like a complete moron :roll:

Oh yeah is that a piezo from a lighter? They suck, get a real bbq one Jack!
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 18, 2008 3:35 pm

Seriously, it worked!

but yes, I need to make a new ignition setup. As far as I can tell, BBQ ignitors use the same piezos as cigarette lighters so I doubt it would make a difference. What I want to do is get some decent ones as the one I used was from a pretty old lighter, and make a double mount.

Also, I'm going to cut down the chamber a little, it's a bit too loud for my tastes.

Small footnote, this has encouraged renewed interest in the idea of combustion cartridges, hmmm...
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Unread postAuthor: CasinoVanart » Tue Nov 18, 2008 8:39 pm

That sucks that you have to cut the chamber down, i like to have a c:b ratio around 7:1 :). Especially for smaller calibre spuddies, the flame is a burnin a loooong time after the projectile has left the barrel, looks cool at night!!

Small footnote: Make a suppressor, you make ones for your plinkers so why not one for this?? Hey...... Hey......
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 19, 2008 12:53 am

Looks cool but attracts too much attention, not what I'm going for. Making a suppressor on this scale would be an interesting design exercise but I don't have much epoxy left so chopping off a couple of centimetres from the chamber will have to do.

I also need to look around for some sort of threaded part I can incorporate into the base, to make the chamber and ignitors accesible and help with venting.
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Unread postAuthor: CasinoVanart » Wed Nov 19, 2008 4:17 pm

You could use one of those plastic ball valve thingies for venting and if it was big enough it could make for access to the chamber... maybe?

What the weather like in Spain anyway? More important is it jam packed full of hot chicks?
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 19, 2008 4:59 pm

It's actually quite cold, I'm up North so it goes down a little below zero at night. In terms of chicas, the ones that are nice are really nice, but what amazes me the most is how well they age, the amount of MILFs I work with beggars belief!

Anyways, combustions, yes... Well, version 1.1 is currently curing. What I did was hack a 35 litre drum apart in order to have a screw-on endcap. Granted, these things aren't pressure rated, but it originally contained 98% sulphuric acid so it's pretty tough stuff (quite a chore to hack up anyway) and besides, most of the surface is reinforced with epoxy.

I got my hands on a new ignitor that's now cast into the cap, ladies and gentlement, I give you ADJUSTABILITY<SUP>TM</SUP> :D

To be tested tomorrow, I'll keep you posted ;)
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Attachments
endcapv1point1ignitor.JPG
The yellow part is just there as a &quot;stand&quot;
endcapv1point1ignitor.JPG (17.45 KiB) Viewed 543 times
endcapv1point1.JPG
*cue dramatically poorly lit cellphone pictures*
endcapv1point1.JPG (23.14 KiB) Viewed 543 times
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Unread postAuthor: MrCrowley » Wed Nov 19, 2008 5:10 pm

Hey that's pretty cool there Jack.

I'm looking forward to seeing this thing in action with the complimentary jsr audio lacking video :P
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 19, 2008 5:18 pm

MrCrowley wrote:the complimentary jsr audio lacking video :P


Oh come on, those were the pen-gun-what-did-that-thing-actually-shoot days! New (now old!) cellphone, remember?
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