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Big Spud Gun

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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Big Spud Gun

Unread postAuthor: OwThatsMyEye » Thu Jun 29, 2006 5:33 pm

Here is one of my other cannons. It's just your basic piston cannon with all the pins and buttons you would expect. It's about 9' long total with a 7'X2" barell. Pegs off of bikes are my favorit ammo for it.
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Unread postAuthor: Spudman_42 » Thu Jun 29, 2006 5:39 pm

Nice, it looks cool. 8)
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Unread postAuthor: Bluetooth » Thu Jun 29, 2006 7:01 pm

Really short barrel. But still really cool cannon.
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Unread postAuthor: benstern » Thu Jun 29, 2006 7:05 pm

No, it has a long barrel. It is a coaxel valve!
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Unread postAuthor: djt » Thu Jun 29, 2006 7:53 pm

coaxils are sweet. nice cannon. whats the piston made out of?
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Unread postAuthor: SpudStuff » Thu Jun 29, 2006 7:57 pm

damn thats big. thoes pegs must be very destructive. i dropped on on my bear foot once and it hurt
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Unread postAuthor: OwThatsMyEye » Thu Jun 29, 2006 8:01 pm

djt wrote:coaxils are sweet. nice cannon. whats the piston made out of?

i used a 3" coupling capped on both ends with a neaprene flap in the front.
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Unread postAuthor: djt » Thu Jun 29, 2006 8:03 pm

dang sounds like one heav piston. sounds like it works good though
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Unread postAuthor: SpudStuff » Sat Jul 01, 2006 12:58 am

all the 3" couplers from stores around my house are crappy and are way too small on one side and way too big on the other side
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Unread postAuthor: noname » Sat Jul 01, 2006 11:01 am

Yep 7' sure is a short barrel. :lol: Jeez that thing is huge. You should weigh it.
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Unread postAuthor: PVC Arsenal 17 » Thu Jul 06, 2006 10:23 pm

does the 3" cap fit trough a 4" female so the piston can be removed?
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Unread postAuthor: boilingleadbath » Fri Jul 07, 2006 12:41 pm

PVC arsenal: yes, it can be removed. The ID of the threads on a 4" female are ~4.3" diameter.
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Unread postAuthor: sam_516 » Wed Jul 19, 2006 5:13 am

i made a coaxil but i didnt have a piston i used 4mm thick (i think) and just left about 10mm gap between it and the end cap and it never leaked and the best thing about it was i only had to fill it up i one spot through the end cap

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