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C19o's 1.5" Barrel Sealing Golfball 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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C19o's 1.5" Barrel Sealing Golfball Gun

Unread postAuthor: c19o » Mon Sep 10, 2007 8:44 pm

I havent posted any of my cannons lately so im putting this one up.

Main Features :
1.5" Porting barrel sealing valve
Breech loading
Enough backspin for a golfball to bounce off water 800ft away
FPS: estimated at 400 - 500 , GGDT says around 630FPS

I'll have a sprinkler valve, or a new 1/2" porting valve on it instead of the ball valve soon, and some new damage vids soon!

Heres some pics and a small vid i took with my phone.

This was at 80psi, there is a dramatic power increase when it is at 125psi but our compressor hose has a tear in it.
[youtube]http://www.youtube.com/watch?v=X3R7uMYqsrc[/youtube]


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These were from shooting table legs wrapped in ducktape at a metal sign, and also a d size battery.

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Tell me what you think!

UPDATE:

I took some pics of the computer i shot and here they are, also a new video but i set the backspin too high so it hit the trees on the other side not the water like i intended.

The metal plate with the circuit board on it was attatched to the other metal plate, i shot them from both sides.

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NOTE: The quality if the vid isnt so good because i took it with my phone

[youtube]http://www.youtube.com/watch?v=z-N6jMH1eRw[/youtube]
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Last edited by c19o on Tue Sep 11, 2007 6:34 pm, edited 1 time in total.
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Unread postAuthor: TwitchTheAussie » Mon Sep 10, 2007 8:56 pm

I think. OUCH! Nice work man :P
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Unread postAuthor: c19o » Mon Sep 10, 2007 8:58 pm

Thanks, when i get my friend to come over with his video camera ill have 4000 airsoft bbs to shoot out of it :P

Tomorrow ill add soem pics of an old computer i shot up but i jumped on it after i shot it so its all in pieces now.
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Unread postAuthor: e1337 » Mon Sep 10, 2007 8:59 pm

Very nice work, Did you lathe the o-ring groves?
And what is the piston made from?

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Unread postAuthor: c19o » Mon Sep 10, 2007 9:02 pm

Nope, i used a drill with some tape on it. Heres a pic of it with the o-rings off.

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Unread postAuthor: e1337 » Mon Sep 10, 2007 9:06 pm

Ahh. Very good idea. I have to try that sometime. Thick or thin tape?
WHats the piston made of?

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Unread postAuthor: c19o » Mon Sep 10, 2007 9:07 pm

i used alot of thin, clear tape so that i get the perfect fit. I think its a 1 1/4" coupler i forgot or 1 1/2".
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Unread postAuthor: e1337 » Mon Sep 10, 2007 9:11 pm

I think It has to be 1 1/4" Coupler. (Fits snug in 2" sch 40.)
Whats that between the sealing face and the coupler?

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Last edited by e1337 on Mon Sep 10, 2007 9:17 pm, edited 1 time in total.

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Unread postAuthor: MrCrowley » Mon Sep 10, 2007 9:17 pm

Nice cannon. How did you get those grooves? Mind explaining this tape thing?
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Unread postAuthor: c19o » Mon Sep 10, 2007 9:19 pm

Well i took the bare coupler, and a drill. Turned the drill and let some tape spin onto it. stuck the coupler on and spun some more tape until i had a snug fit,then used a knife, xacto knive, and a small, sharp screw driver to cut the grooves.
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Unread postAuthor: MrCrowley » Mon Sep 10, 2007 9:22 pm

Ah right, I getcha. Very cool, yet ghetto :P
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Unread postAuthor: c19o » Mon Sep 10, 2007 9:29 pm

Yea i had to hold the drill button with my toe lol
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Unread postAuthor: origin unknown » Tue Sep 11, 2007 4:31 pm

Thats a nice huge gun! I hope golfballs don't fly over the Mississippi river from Arkansas and hit me in the head. If they ever do, I will know who it was.
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Unread postAuthor: jackssmirkingrevenge » Tue Sep 11, 2007 4:38 pm

c19o wrote:Yea i had to hold the drill button with my toe lol


Which also features in your photos *sigh*

Nice effort though, i bet property values in your area are plummeting ;)
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Unread postAuthor: c19o » Tue Sep 11, 2007 6:36 pm

I updated the first post with a few damage pics and a new video, more to come soon when i get a sprinkler valve on this and a breechload thats not 5" from the valve. (golfballs chip the pipe as they go out :? )
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