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Advanced Extreme Small Combustion v2! Must see!

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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Advanced Extreme Small Combustion v2! Must see!

Unread postAuthor: elitesniper » Tue Apr 14, 2009 7:52 pm

One year after this http://www.spudfiles.com/forums/micro-advanced-combustionalmost-t13223.html
Till today this gun is long gone in the junkyard...It was kinda ugly looking.. sooo...today this gun is built!
It shoots faster then my 700 fps pellet gun when it shoots paintballs
16'' 2'' sch 40 pvc chamber
40'' 3/4 barrel yes i need a longer one but i made it short for noise..still it shoots insanely fast.
Krylon fusion paint
Breech loading
All Electronics hidden in a m4 grip system
Peizo ignition double sparks
Uses the fuel pod system, I fuel to about 25psi on the pod..No regulater out of funds so I improvised
And most importantly hope you guys like!
Watch this thread I will post some damage videos very soon!


Excuse my video its kinda hard doing everything with one hand..
:D [youtube]http://www.youtube.com/watch?v=WhVL9ntlq8g[/youtube]

:)
Image
Image
the internals.. electric motor using a computer fan held in with two screws on the side of chamber
Image
Image open breech.. 1 inch tee with o-rings super glued inside..
Image
electronics for fan, rechargeable 7.5 volt battery
Image
next to my gator bbmg.

Image
fueling supplies.
enjoy! Tell me what you guys think!!! :)[/img]
UPDATE VIDEO
[youtube]http://www.youtube.com/watch?v=v-mCbG15lGg[/youtube]
Some fun ammo..not really made for damage but it still does damage to 1/2 wood:)
[youtube]http://www.youtube.com/watch?v=xTzhpGDwaEc[/youtube]
Shooting out a piece of chalk and missing cool sound though! :)
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Last edited by elitesniper on Wed Apr 15, 2009 10:25 pm, edited 2 times in total.
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Unread postAuthor: LCTChamp » Tue Apr 14, 2009 8:06 pm

Looks good. It seems very ergonomic and looks very clean. The only thing I could suggest is removing the hose clamps that are holding the pistol grip on. You could just use epoxy to hold it on.

Edit: I thought those were quick connects and quick disconnects, but after watching your video i think they should rename them. :lol:
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Last edited by LCTChamp on Tue Apr 14, 2009 8:39 pm, edited 1 time in total.
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Unread postAuthor: Clutch » Tue Apr 14, 2009 8:09 pm

Looks great, but being that small it looks a little weak.
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Unread postAuthor: elitesniper » Tue Apr 14, 2009 8:11 pm

HAHA weak you say?!! Vid Coming.. as soon as the fan batts finish charging..Well it shoots extremely fast because when I compare it to my 700fps+ pneumatic pellet gun the paint ball for this gun gets to the wall faster then the pellet.. :) Like this gun goes BOOM..SPLAT Pellet gun goes Peck....pah. :)
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Unread postAuthor: twizi » Tue Apr 14, 2009 8:35 pm

i am sad you took away the pistol grip from the high presure pistol but happy u used on this , any way of a vid or damage shots
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Unread postAuthor: elitesniper » Tue Apr 14, 2009 8:40 pm

I will very soon..watch this thread :) yeah the pellet pistol was to small of a bore for me.. :)
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Unread postAuthor: STHORNE » Tue Apr 14, 2009 9:07 pm

One word for ya....

B E A S T L Y !!!

9.99/10
( would have gave you 10/10 if you named it after me =P )
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Unread postAuthor: starman » Tue Apr 14, 2009 9:46 pm

Nice trim but feature full cannon Elite. A surprisingly large number of details you've included. Sharp paint job as well.

I believe only a couple of comments....the barrel brace/holder out front isn't really gripping the barrel and you've got a little bit of barrel sag. Also, you could cover your hose clamps with black heat shrink tubing and will dress those up a lot.

Otherwise really nice work!
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Unread postAuthor: elitesniper » Tue Apr 14, 2009 10:05 pm

Thanks starman! Honestly your triple thunder inspired me to make this hence the paint job! :)
How much and where can I get the heat shrink tubing for this, at homedepot?
And i changed the barrel suppot/breech slider, with some foam material for arts and crafts and now it slide very nicely but still grips the barrel so it does not sag
Image
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Unread postAuthor: starman » Tue Apr 14, 2009 11:51 pm

Well cool...now that I look again there are a few common features. How are you liking the external fuel metering?

I got my heat shrink at Fry's Electronics. Home Depot has only small lengths. You can get 4' sections of it, then cut it to fit.

Nice work on fixing the sag... :wink:
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Unread postAuthor: elitesniper » Wed Apr 15, 2009 12:00 am

Thanks for the links star man! Loving the external fuel system...much less bulk added to the gun and I can replicate them so i can put some in my pocket :)
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Unread postAuthor: starman » Wed Apr 15, 2009 12:03 am

elitesniper wrote:Thanks for the links star man! Loving the external fuel system...much less bulk added to the gun and I can replicate them so i can put some in my pocket :)


Yep. I like having several pressurized and ready to go. I've thought it would be cool to have a bandolier or belt with a few loaded up, neatly ready to use. Makes for a much lighter gun.

Get you a regulator on there as soon as you can afford it. Makes fueling a breeze. You might try some MAPP gas as well...around 5-10% or so more power.
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Unread postAuthor: elitesniper » Wed Apr 15, 2009 12:42 am

I have some mapp gas I can use, but ill stick to propane for my everyday shots..mapp gas is kinda expensive per bottle :)
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Unread postAuthor: psycix » Wed Apr 15, 2009 6:54 am

Nice gun! Looks very good.

One comment:
Your chamber fan motor is a brushed motor. Brushed motors spark.
If the fuel mix enters the motor and it sparks you could get accidental ignition.
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Unread postAuthor: spudmanb3 » Wed Apr 15, 2009 9:09 am

Sweet gun mate! I love the pistol grip. It also looks extremely clean.
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