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Marble Gun

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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Marble Gun

Unread postAuthor: mikemurph » Fri May 22, 2009 7:52 pm

This is my new marble gun, it's powered by about 9 seconds of butane. It shoots metal ball bearings very fast. I made it in about 20 minutes, not including finding the junk around the house. It can leave a fair sized dent in a wall, and wrecks cans. I hope you like it, and tell me what I should do to improve.

The Full Gun:
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The Chamber
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Open Breech
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Ammo
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Damage Shots (front entrance and exit wound)
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Unread postAuthor: far_cry » Fri May 22, 2009 8:04 pm

nice gun dude

mikemurph wrote:Damage Shots (front entrance and exit wound)[/b]


wound !!!!!! is the target an animal ,because he don't look like a one !!???

soda bottle as an air chamber maybe

fabric softener tank :P :P :P

be careful dude he is not safe
and what is the trigger to release the air ?
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Unread postAuthor: mikemurph » Fri May 22, 2009 8:13 pm

Oh yea i Used the fabric softener for the handle
and how about now?
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Hahahahaha
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Unread postAuthor: far_cry » Fri May 22, 2009 8:38 pm

ok i think that will do it

but i afraid a dead cat will change expression :D :D :D


so what do you use for fuel .
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Unread postAuthor: mikemurph » Fri May 22, 2009 8:42 pm

10 seconds of butane, its in the pic (the butane holder)
and its not dead yet, just a a bad cut
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Re: Marble Gun

Unread postAuthor: Technician1002 » Fri May 22, 2009 10:43 pm

mikemurph wrote:This is my new marble gun, it's powered by about 9 seconds of butane. It shoots metal ball bearings very fast. I made it in about 20 minutes, not including finding the junk around the house. It can leave a fair sized dent in a wall, and wrecks cans. I hope you like it, and tell me what I should do to improve.


Damage Shots (front entrance and exit wound)
Image
Image


Very nice. I have found that for softer targets a more impressive splat can be made by using a lighter projectile so it hits at a higher speed. Here is a empty juice can hit with a jawbreaker. A heavy projectile would have been much slower.

Nice ghetto launcher. I'm impressed with the performance. That HDPE jug is pretty tough. Edit, added zoom of the damage.
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juice can after jawbreaker impact
Damage1.jpg
Juice can and jawbreaker
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Unread postAuthor: mikemurph » Sat May 23, 2009 3:07 pm

This was a pretty tough target, it was about 4x the thickness of a soda can, it was an old green gas can, It had to be tough to withstand the pressure. Thanks for the tip, I might try it and post some pics

That HDPE jug is pretty tough

Yea, it inflates a tad bit when I use a burst disk, but it holds well
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Unread postAuthor: Ragnarok » Sat May 23, 2009 3:19 pm

Not exactly sophisticated, but it clearly works.

Why are all of those images mirrored?
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: mikemurph » Sat May 23, 2009 5:25 pm

they were taken from my webcam on my mac
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Unread postAuthor: jackssmirkingrevenge » Sat May 23, 2009 11:12 pm

Impressive performance for a combustion and original chamber, I like ;)
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