Harpoon gun

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
brplatz
Specialist 2
Specialist 2
Posts: 222
Joined: Fri Mar 21, 2008 12:21 am

Sun Sep 21, 2008 2:30 pm

Hey all, i have made many cannons before as some know, but this is a first attempt at a retrievable harpoon type gun.

Pretty basic but i think it looks pretty Nice.

Chamber: Old fire extinguisher (not sure of volume ATM)
Barrel: 1/2 SCH 120 about 1.5' long
Valve: Modified 1" Sprinkler Valve
Older finshing reel
Harpoon: made from a fiberglass rid that fits perfectly in the SCH120 barrel.

So here it is!

Image
Image
Image
"Any problem on Earth can be solved with the careful application of high explosives...the trick is, not to be around when they go off" Col. Mertz Von Quiriheim
User avatar
Pilgrimman
Specialist 4
Specialist 4
Posts: 480
Joined: Thu Jun 28, 2007 1:10 pm
Location: Grants Pass, OR

Sun Sep 21, 2008 3:12 pm

Nice cannon! I like how the tank is incorporated into a kind of stock. That thing could take some serious pressure if you upgrade to a QEV! Btw, your sig says your isp is Oregon State. I'm there too! We need to do some spudding together :D
Yeah, we wouldn't want to anger the bees, now would we??

I HATE YOU BEES! I HATE YOU BEES! I HATE YOU BEES!

LMAO Classic!!!! I love Family Guy!
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26189
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 551 times
Been thanked: 328 times

Donating Members

Sun Sep 21, 2008 3:15 pm

Pilgrimman wrote:your sig says your isp is Oregon State. I'm there too! We need to do some spudding together :D
It says that *your* IP is Oregon State :p

Nice cannon, does it actually work, in harpoon terms?
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Pilgrimman
Specialist 4
Specialist 4
Posts: 480
Joined: Thu Jun 28, 2007 1:10 pm
Location: Grants Pass, OR

Sun Sep 21, 2008 3:20 pm

It says that *your* IP is Oregon State :p
Well, that demonstrates my ignorence of the internets:P
Yeah, we wouldn't want to anger the bees, now would we??

I HATE YOU BEES! I HATE YOU BEES! I HATE YOU BEES!

LMAO Classic!!!! I love Family Guy!
User avatar
brplatz
Specialist 2
Specialist 2
Posts: 222
Joined: Fri Mar 21, 2008 12:21 am

Sun Sep 21, 2008 3:26 pm

its a little back heavy due to the metal ring that covers the last 2.5" or so. i think i will hacksaw it off so only a little of the metal is there to see if longer range flight is better.

Short range ( 10 feet) is pretty good but i haven't shot it over 35 psi.

More tests to come!

Yes the sig is a funny lil thing i found and liked it so i used it.
"Any problem on Earth can be solved with the careful application of high explosives...the trick is, not to be around when they go off" Col. Mertz Von Quiriheim
User avatar
Sticky_Tape
Sergeant 2
Sergeant 2
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.

Sun Sep 21, 2008 5:28 pm

Cool gun but about your sig: does it say your ip is 142.68.161.7 for everybody who sees it? Check.
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
blind909
Corporal 4
Corporal 4
Posts: 828
Joined: Thu Aug 02, 2007 6:06 pm
Location: Las Vegas, NV
Contact:

Sun Sep 21, 2008 6:09 pm

Sticky_Tape wrote:Cool gun but about your sig: does it say your ip is 142.68.161.7 for everybody who sees it? Check.
No, That is YOUR IP Sticky. The whole purpose of the sig is to freak people out. The only IP you will see on one of those sigs are your own. Now everybody knows YOUR IP because I had to quote your post. If you would have read the above posts, you would of knew that. Basically what it is a 1 way mirror, where It will show you your own IP, And all that info, but nobody else will see it, freaky huh?
<a href="http://www.danasoft.com"><img src="http://www.danasoft.com/citysign.jpg" border="0"></a><div>
THIS STATES WHERE YOU LIVE, NOT ME, IT SAYS WHERE YOU LIVE BASED ON YOUR IP ADRESS.
cannon monkey
Specialist 3
Specialist 3
Posts: 399
Joined: Sun Sep 07, 2008 10:50 am
Location: usa FL

Sun Sep 21, 2008 7:12 pm

every nice cannon and i just got the code for that little sign i plan putting it as my sig

i like the reel on there i did that once :lol:
Last edited by cannon monkey on Sun Sep 21, 2008 7:52 pm, edited 1 time in total.
nivekatoz
Specialist 2
Specialist 2
Posts: 237
Joined: Sat Nov 25, 2006 7:05 pm

Sun Sep 21, 2008 7:51 pm

Thats a very cool gun. I was thinking of doing something like that with my gun.
You could try using real arrows..You might have to mod them a little. I think they would work good.
Last edited by nivekatoz on Thu Sep 25, 2008 4:56 pm, edited 2 times in total.
User avatar
brplatz
Specialist 2
Specialist 2
Posts: 222
Joined: Fri Mar 21, 2008 12:21 am

Sun Sep 21, 2008 8:03 pm

Thanks guys!

Yes the sig is just as blind909 says it is.

the harpoon does not fly as well as i want it to so i am looking into a better design at the moment
"Any problem on Earth can be solved with the careful application of high explosives...the trick is, not to be around when they go off" Col. Mertz Von Quiriheim
User avatar
biggsauce
Specialist 3
Specialist 3
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm

Sun Sep 21, 2008 10:57 pm

Looks good man. If you need some ideas...
http://www.spudfiles.com/forums/the-int ... 14052.html
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Mon Sep 22, 2008 12:07 am

Very cool and solid looking gun. I'm sure with a little work you will get your harpoon performing better. I'm thinking a somewhat longer barrel will help you too.

Just don't take it fishing with you. Game wardens aren't known for their sense of humor with these things....right Biggsauce!!!?
User avatar
biggsauce
Specialist 3
Specialist 3
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm

Mon Sep 22, 2008 1:13 am

Oh so right you are Starman. I forgot to mention that. Don't even think of fish while you're holding that thing. They will probably write you a ticket for that too...

My court date is October first, and its looking like a $635.15 fine. Is the .15 really necessary?

Be smart with it
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Mon Sep 22, 2008 3:02 am

biggsauce wrote:...looking like a $635.15 fine.
:shock: Holy Crap :shock: That's almost worth getting a lawyer over. Utterly preposterous.... :?
User avatar
biggsauce
Specialist 3
Specialist 3
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm

Mon Sep 22, 2008 9:26 am

It initially was $1135.15 for "taking fish illegally"

I was then re-issued a ticket (becuase I didnt actually have any fish in the boat) for "attempting to take fish illegally"
wich is a bit cheaper.
Post Reply