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Mini Combustion

#1 User is offline   Mr Chambers Icon

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Posted 14 August 2009 - 10:39 AM

Aint built anything in a while so....
Whole Cannon
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Electrodes
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Breach loaded 6mm barrels
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Big Picture
http://i825.photobuc...UK/IMG_0231.jpg

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#2 User is offline   skunkfire Icon

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Posted 14 August 2009 - 06:45 PM

I love it, how have you sealed the 3 sub barrels into the 'over barrel' to stop air leaking out?
And is that a detergent bottle for a handle, if so extra ghetto points :lol:
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#3 User is offline   Mr Chambers Icon

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Posted 14 August 2009 - 08:27 PM

Ha ha! Unfortunatly, all is not as it seems. The trigger is actually a long reach lighter thing and its bloody broken :P Im going to replace it with a bbq lighter and a pistol grip from an airsoft shotgun. Its black and fits nicely. Bhe barrels will be sealed with hot glue....Once I get some ;)

So its not as finished as it looks. Ive fired it a few times. It works great... but cheap supplies dont last long! Also the chamber and barrel are from a pond pump fountain extension!

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#4 User is offline   skunkfire Icon

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Posted 14 August 2009 - 09:52 PM

It really is mini now I've looked at it more closely :o
What are the cut outs on the ends of the barrels for? I'm guessing to aid breach loading, or they were just already there in something else you cannibalised :D
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#5 User is offline   inonickname Icon

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Posted 15 August 2009 - 01:47 PM

I'm looking at it and thinking... "great, another guy who calls aluminum pipe you buy from (hardware store) mini" and then I look again, and see the part of the long nosed igniter..

Pretty cool, but I'd like to see how it performs..
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Posted 15 August 2009 - 05:24 PM

Thats so awesome :o can we a video once you get it working :)
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#7 User is offline   Mr Chambers Icon

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Posted 15 August 2009 - 06:06 PM

Yes I tore apart an airsoft gun xD The cut outs are where the where the hop up rubbers go. Im going to put something there... possibly a washer to Just hold the bbs in place. I ordered my ignitor so It should be working again somethime soon! And yes I shall get some videos!

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#8 User is offline   Biopyro Icon

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Posted 15 August 2009 - 10:00 PM

If the washing up bottle didn't have the lid, it would look a lot less ghetto and really good. I like the design, but imagine it's a bit fiddly having to load 3 barrels with BBs every time?

Edit: sounds a bit mean; I do really like it.
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#9 User is offline   inonickname Icon

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Posted 16 August 2009 - 12:25 AM

That's not a washing up bottle Bio..Think long nosed lighter
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#10 User is offline   Biopyro Icon

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Posted 16 August 2009 - 11:30 AM

Ah I thought it looked pretty tiny! That puts it into perspective much more. The red bit just looks like a lid.
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#11 User is offline   Jogumpie Icon

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Posted 24 August 2009 - 08:27 PM

I can never get a combustion to fire, let alone a mini. Something about me just makes them fail, so i'm all the more amazed by what you've done.
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#12 User is offline   Biopyro Icon

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Posted 24 August 2009 - 08:35 PM

I know what you mean Jogumpie, that is the one thing I dislike about combustions. Were it not for their unreliability when using unmetered fuel I'd probably have never even built a pneumatic!
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#13 User is offline   Jogumpie Icon

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Posted 25 August 2009 - 08:56 PM

Yes! Finally someone who understands me! I'm all pneumatic though, because of the high pressures you can put into them. (hint hint!)
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#14 User is offline   Mr Chambers Icon

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Posted 21 April 2010 - 10:16 AM

OK haven't updated this in a while, 3 barrels sucked no power.. I dunno if there was a leak round the barrels or something. Eventually managed to get the thing to fire consistently when my igniter broke. So I binned the whole project. Now I've started a mark II I aint done much work on it yet, but heres a peek. Im hoping the barrel will take paint balls, But i have a feeling the tube is tapered So it might be a splat gun. If thats the case Ill put a bit of 15mm copper in there.

http://i825.photobuc...UK/IMG_0443.jpg
http://i825.photobuc...UK/IMG_0442.jpg

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#15 User is offline   Mr Chambers Icon

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Posted 23 April 2010 - 11:24 AM

Finished! I have a video of a couple of shots. Ill put the link up when its done. I have pictures of the thing finished. Oh and the sight on top is purely for looks.

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Vid link http://www.youtube.c...h?v=kN6Zul41Z70
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#16 User is offline   Biopyro Icon

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Posted 23 April 2010 - 11:28 AM

There is no denying that it looks absolutely brilliant.. A perfect little fun gun and very neat and smooth to boot. What's fuelling it like? Can you make it fire consistently or is it hit and miss with such a small chamber?
Also what's the handle from?

This post has been edited by Biopyro: 23 April 2010 - 11:29 AM

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#17 User is offline   Mr Chambers Icon

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Posted 23 April 2010 - 01:45 PM

Its pretty consistent actually. 6 seconds of fuel. Anything over that it can be a bit iffy, also the handle is off an air soft shotgun that I lost my temper with ha ha

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