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Metal Mayhem

Built a pneumatic 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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Metal Mayhem

Unread postAuthor: PCGUY » Mon Jan 31, 2005 7:14 pm

<div align="center">METAL MAYHEM

Provided By Boogieman - <a href="http://www.advancedspuds.com">www.advancedspuds.com</a>

MetalMayhem is my first attempt at a metal gun, and my first attempt at a coaxial piston valve. The launcher is a coaxial piston type, made mostly of spare parts I had already. The barrel is 3/8" copper pipe, and the chamber is part of an old aluminum bike pump. The piston is extremely simple, its only a 1" copper cap with neoprene bolted onto it. I thought this gun would be powerful, but I had no idea how fast it would actually shoot! I split a cork in two on my first shot. The cork only came into contact with some wadded up cloth. The pilot area (area being the piston) is exhausted with a 1/4" ball valve.

The internals of the gun. They are laid out how it would be inside the chamber. The white thing is to center the barrel. It is just a ground out and cut down 1" end cap. Sheet PVC would work also, as would wood or anything really. The back of the chamber (right end) is plugged with the original bike pump plug. It is held into place with the 1/4" pipe nipple that the exhaust ball valve is attached to.

Oh, by the way, this little guy is FAST! It amazed me for its size! I can shoot big ball bearings (fit perfect in the barrel) at 411fps, but here is the amazing shot: 911.5FPS! That's chrony data when shooting a 3/8" cork at 120psi.
Needless to say, I almost wet my pants with excitement when I saw a number that big on my chrony!

Provided By Boogieman - <a href="http://www.advancedspuds.com">www.advancedspuds.com</a></div>
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Attachments
exhaust.jpg
Close Up of the Exhaust Valve
exhaust.jpg (12.7 KiB) Viewed 5120 times
jbweld.jpg
Close Up of the JBWeld Joint
jbweld.jpg (5.83 KiB) Viewed 5120 times
copper_012.jpg
The seat end of the barrel, along with the spacer and front of the piston.
copper_011.jpg
The piston. See! I told you it was simple!
copper_009.jpg
The guts...
copper.jpg
copper.jpg (4.8 KiB) Viewed 5120 times
copper_008.jpg
Last edited by PCGUY on Fri Mar 10, 2006 10:21 pm, edited 4 times in total.
Yes, I am the guy that owns & operates SpudFiles (along with our extremely helpful moderators).
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Unread postAuthor: theexp » Wed Feb 02, 2005 8:19 pm

BEAST..
Just a metal beast.

There is a TON of metal guns now. What are you too good for PVC, lol, jk
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<img src="http://www.spudfiles.com/uploader/uploadFiles/post-12-1064980630.gif">

My website www.freewebs.com/potato_cannon/
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Unread postAuthor: beebs111 » Thu Aug 25, 2005 3:17 pm

that is insane i have a crrrappy bike pump in my garage :lol: :lol: so maybe i can find the parts to make it
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Unread postAuthor: 3quarters » Fri Sep 16, 2005 10:51 pm

That is sic, bro
u sed u made it out of spare crap?
that is so sic
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Unread postAuthor: bubblebathman » Tue Sep 27, 2005 12:15 pm

awsome but ewww... thats is a peace of @#!$
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Unread postAuthor: spudshot » Tue Sep 27, 2005 4:26 pm

why do you say that? it shoots extremely well, its not that ugly either
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Unread postAuthor: drac » Tue Sep 27, 2005 5:16 pm

Hmmm, nice choice of words bubbleman. Let me find a good rant on the whole thing:
I don't care if someone posts a mediocre-looking cannon or not, they don't deserve to be teased about it. I've seen many "pill-bottle minis"
that I wouldn't wipe my dog's ass with, cannons, taped together with gift wrap and duct tape, and 4" plugs made of wood. And no one makes a fuss over the lack of "bling".

Courtesy of DR.
Oh, and boogieman is a spudgun genius, he has a hybrid, and has one of the only revolver guns in existence. So before you go dissing anyone else's cannons, take a good look at yourself and say "What gives me the right to say that?"

Besides, buddy, where are your guns? :wink:

Sorry bout that, some things have been bugging me and I needed to get that out of my system.
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Unread postAuthor: saladtossser » Tue Sep 27, 2005 6:30 pm

Sorry bout that, some things have been bugging me and I needed to get that out of my system.


well, when that happens, i type my anger out, but i never hit "Submit"
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"whoa... I thought pimpmann was black..."-pyromanic13
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Unread postAuthor: drac » Tue Sep 27, 2005 7:11 pm

Well, I guess that's what makes us different then doesn't it? :lol:
Besides, many people that know me don't take me seriously, because half the time, I'm not.
But when I feel strong on a certain position, you'll get a HUGE rant like the one above.
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Unread postAuthor: julz » Sat Oct 01, 2005 12:45 am

saladtosser: good idea, i might have to try that one time and just preview it. :)

yeh, bubble, dont bother to give ppl crap about cannons, espescially if u havent posted one yet. if ur going to criticise, at least give reasons for it.

i like the cannon but i still dont understand how piston guns work :roll:
anyeay, cya
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Unread postAuthor: CHRISW_is_DEAD » Sun Feb 26, 2006 9:41 am

911.5 ?!?! and the Fed's are alright with these things? AWSOME! I like the simplicity and performance. Some people can build really cool looking guns that can't barely even shoot. I'll take performance any day.
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Unread postAuthor: SpudStuff » Thu Mar 30, 2006 8:04 pm

thats asome because its so simpul
how much did all the parts cost together?
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Unread postAuthor: zvallance1 » Thu Mar 30, 2006 8:16 pm

once again, an old topic brought back up...
and read the VERY BEGINNING
says "provided by boogieman," but the guy who started the topic is PCGUY...cant expect him to answer back Boogie
anways, people i know usually forget how much their guns cost..they're too caught up in actaully shooting stuff to care
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Unread postAuthor: WOW!! » Tue May 23, 2006 3:50 pm

Dam, i new i should not have throw that bike pump out lol

Josh
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Unread postAuthor: cb4289 » Tue May 15, 2007 4:59 pm

anyone got a ppic of a basic piston part aslo how can you make a bike ppump into a piston ????
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