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50mm cannon made of steel only

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: Billy Bob » Tue Nov 07, 2006 1:01 pm

Hi,
I become ready with cutting my new science video. I post it here so I doesn´t have to open a new topic.

http://www.youtube.com/watch?v=9cBDZFCigC0

I made it specially for spudgun fans from Canada, Great Britain , USA and Germany. I hope you like it. The action is how to safe the environmet on an alternative way in that you destroy "old" freezers. :wink: The performer spudgun you see a short time i used two calibre 25mm and 35mm.
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Unread postAuthor: reaper613 » Tue Nov 07, 2006 2:11 pm

not bad, i guess im gonna have to break out my bullets with the steel core and make some new video, still thats a lot more impressive than these other guys shooting through 3/4" pliwood. very good job! :D
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Unread postAuthor: CpTn_lAw » Tue Nov 07, 2006 2:30 pm

yeah i agree!! this is very impressive. Powerfull, loud, not so big, but, i would like some more infos!! could you please tell us a bit more a bout it?
Air tank? Materials? valve? ammos?


Thx a lot
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Unread postAuthor: Billy Bob » Fri Nov 10, 2006 9:09 am

The chamber is made from a Co2 fire extingusher. As ammo I use Baby batteries or Mono Batteries. Baby batteries have an higher Power you see it in the video when tehey go trough the freezer.

The spudgun is build very simple.
Here some old pictures.

Image

Image
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Unread postAuthor: Hotwired » Fri Nov 10, 2006 9:19 am

I like videos with just the interesting bits left :)


I've never seen a fire extinguisher with a threaded connection at both ends before. Is it a special type?
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Unread postAuthor: Billy Bob » Sat Nov 11, 2006 6:57 am

Yeah the type called: Freezers death ! :wink:

No the second connection is weld and later coating soo it looks like original.
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Unread postAuthor: patatoSteve » Sat Nov 11, 2006 4:29 pm

Like the gun. How far does it shoot.
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Unread postAuthor: FiveseveN » Sat Nov 11, 2006 7:06 pm

Nice combustions indeed.
One thing puzzles me: what fuel(s) do you use? 'cause at that length to bore ratio, combustions tend to have poor efficiency.
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Unread postAuthor: Billy Bob » Tue Nov 14, 2006 2:59 am

How far does it shoot

A few hundred meters. I never check this exactly out but I think 300- 400m with baby batteries.

I use a propan/butan burner like you have when you solder copper tubes.
That mixed the Propan/Butan with air and you have a perfect explosive micture everytime !

Here a picture but my is a little bigger.
http://www2.westfalia-versand.at/medien ... 299/65.jpg
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Unread postAuthor: Billy Bob » Sat Jan 06, 2007 11:20 am

Hi,


Image
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Last edited by Billy Bob on Sun Feb 25, 2007 5:33 am, edited 1 time in total.
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Unread postAuthor: CpTn_lAw » Sat Jan 06, 2007 11:53 am

i see that on the picture of the extiinguisher one, you used teflon tape for the threads...Do not do that with combustion. when burnt, teflon transforms into cyanide, which you know is lethal.
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Unread postAuthor: Billy Bob » Sat Jan 06, 2007 3:44 pm

Thank you for that information. I will put that in the garbage :!:
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Unread postAuthor: Etc1990 » Sun Jan 07, 2007 2:04 am

Holy douchefucker! That thing has hellish power,I would hate to get busted in the ass with it.
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Unread postAuthor: Billy Bob » Sun Feb 25, 2007 5:35 am

Hi sorry for open this old topic again thats the third attempt to upload the video. :wink:

Now its succesfull uploaded.

http://www.youtube.com/watch?v=WYW_HI1x8rw

Regards

Matthias
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