Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 60 users online :: 4 registered, 0 hidden and 56 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

any suggestions for a 4" barrel?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
Sponsored 
  • Author
    Message

any suggestions for a 4" barrel?

Unread postAuthor: The High Plainsman » Sat Mar 04, 2006 6:34 pm

Ive got an idea brewing in my head to make one of the largest pneumatic cannons ive ever seen, including a 18' 4" sch 40 barrel. Problem is that I am having trouble thinking of things to shoot out of it. All I have come up with so far is a 2x4 with a sabot at the end and rubber snakes set in some ballistics gelatin (part of a tradition at my school to build a snake killing machine for st. patrick's day). apart from those two and making my own out of either concrete or ice, i am stumped on this one. any suggestions would be appreciated.
  • 0

User avatar
The High Plainsman
Private
Private
 
Posts: 24
Joined: Thu Mar 02, 2006 9:48 pm
Reputation: 0

Unread postAuthor: theregoesthewindow » Sat Mar 04, 2006 6:46 pm

I think 2 liter soda bottles are 4 in diameter.
  • 0

User avatar
theregoesthewindow
Sergeant
Sergeant
 
Posts: 83
Joined: Sun Jan 22, 2006 8:05 pm
Reputation: 0

Unread postAuthor: CS » Sat Mar 04, 2006 7:01 pm

Wow, thats going to be big...

If you actually end up making this cannon, be sure to talk it over on the forums. Because I would hate to see you build this massive cannon and slap on a sprinkler valve or something.

As to ammo, water, dirt, stuff you dont want anymore.
  • 0

User avatar
CS
Donating Moderator
Donating Moderator
 
Posts: 1897
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah
Country: United States (us)
Reputation: 4

Unread postAuthor: spudshot » Sat Mar 04, 2006 7:10 pm

i think DR fires hunts bean cans filled with concrete out of his 4" hybrid cannon, try that.
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: The High Plainsman » Sat Mar 04, 2006 7:31 pm

pimpmann22 wrote:Wow, thats going to be big...

If you actually end up making this cannon, be sure to talk it over on the forums. Because I would hate to see you build this massive cannon and slap on a sprinkler valve or something.

As to ammo, water, dirt, stuff you dont want anymore.

as for a valves, i am thinking dual 3" piston valves actuated by modified sprinkler valves, if that sounds sufficient (if i calculated right, i need 20 feet of 6" pipe for air tanks, i want them empty in a hell of a hurry). i will make sure to take lots of pictures of the build process and plenty of pictures and video of it kicking ass.
  • 0

User avatar
The High Plainsman
Private
Private
 
Posts: 24
Joined: Thu Mar 02, 2006 9:48 pm
Reputation: 0

Unread postAuthor: Atlantis » Sun Mar 05, 2006 12:45 am

Two words, Large Fruit. Watermelons, canteloupe, and pumpkins. Big water-balloons.
  • 0

User avatar
Atlantis
Brigadier General
Brigadier General
 
Posts: 955
Joined: Sat Sep 03, 2005 10:26 pm
Location: Florida
Reputation: 0

Unread postAuthor: The High Plainsman » Sun Mar 05, 2006 1:37 am

not a bad idea with the fruit, but my little gun makes apple sauce at the end of the barrel. if i shoot an apple straight up in the air, i get dime sized pieces back on the ground (at 125 psi). i cant really see bigger fruits fareing any better in a gun as big as i am wanting to make, but i will give it a try none the less.
  • 0

User avatar
The High Plainsman
Private
Private
 
Posts: 24
Joined: Thu Mar 02, 2006 9:48 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: boilingleadbath » Sun Mar 05, 2006 4:54 am

You know those propane canisters they sell at walmart, the green ones? Fill the empties with concrete!

The best option is to go around with a wafer of 4" pipe, and just check anything that looks enticing.
(and incidentaly, 2L soda bottles don't fit)
  • 0

User avatar
boilingleadbath
Moderator
Moderator
 
Posts: 1642
Joined: Sat Mar 12, 2005 10:35 pm
Location: Pennsylvania, USA
Reputation: 0

Unread postAuthor: EuroSpudGun.com » Sun Mar 05, 2006 2:12 pm

The High Plainsman wrote:not a bad idea with the fruit, but my little gun makes apple sauce at the end of the barrel. if i shoot an apple straight up in the air, i get dime sized pieces back on the ground (at 125 psi). i cant really see bigger fruits fareing any better in a gun as big as i am wanting to make


From my understanding - a gun of that size you will not need to use pressures of 125psi to have some serious power behind your projectiles.
A working pressure of 80psi would hold enough air in your 20' tank to send a mellon or pumpkin a fair distance without make fruit smoothies and pie out of them - use a higher pressure for solid ammo!!!!
  • 0


EuroSpudGun.com
Private
Private
 
Posts: 3
Joined: Sat Feb 04, 2006 12:07 pm
Reputation: 0

Unread postAuthor: The High Plainsman » Sun Mar 05, 2006 4:58 pm

even at 80 psi, i think watermellon would be mush, but maybe a grape fruit or something. i will have to start testing things for fit.

me and my partners (this gun will be a joint effort as it is too expensive for any of us to build alone) are going to start building soon as we get our tax returns back later this month. hopefully, i will be able to put up some pictures as we go.
  • 0

User avatar
The High Plainsman
Private
Private
 
Posts: 24
Joined: Thu Mar 02, 2006 9:48 pm
Reputation: 0

Unread postAuthor: rna_duelers » Sun Mar 19, 2006 11:37 pm

Freeze them and then they wont turn to mush.
  • 0

User avatar
rna_duelers
Major General
Major General
 
Posts: 1740
Joined: Mon Sep 26, 2005 7:07 am
Location: G-land Australia
Country: Australia (au)
Reputation: 1

Unread postAuthor: schmanman » Mon Mar 27, 2006 3:44 pm

what about a football.those vortex football thingies with the wistles and tails would fit almost perfectly,wouldent they?
  • 0

User avatar
schmanman
Major General
Major General
 
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Country: United States (us)
Reputation: 0

Unread postAuthor: nicholai » Mon Mar 27, 2006 3:52 pm

man, the pocket sized ones are perfect for 2" pipe, they spiral like a bullet. check ebay i see them all the time
  • 0

Image
User avatar
nicholai
Captain
Captain
 
Posts: 349
Joined: Wed Jan 04, 2006 4:18 pm
Location: Maine
Reputation: 0

Unread postAuthor: schmanman » Mon Mar 27, 2006 4:09 pm

ok thanks for the info. I was also wondering the same thing about the 4 inch barrel. Right now my cannon has two 6 foot long,4 inch diameter chambers.im going to cut them off and replace them with 5 or 6 foot long 6 inch chambers,then get a 15 foot long 4 inch barrel.I already got a 10 foot one,but not quite enough air chamber to be very powerful.lots o fun
  • 0

User avatar
schmanman
Major General
Major General
 
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Country: United States (us)
Reputation: 0

Unread postAuthor: Andrew52 » Sat Apr 01, 2006 1:24 pm

how bout tp soaked in water then froen that might work
  • 0

User avatar
Andrew52
Sergeant Major
Sergeant Major
 
Posts: 196
Joined: Sun Feb 26, 2006 5:01 pm
Reputation: 0

Next

Return to Construction Materials/Ammo Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'