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 40 users online :: 4 registered, 0 hidden and 36 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The BigDelicious

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 

BigD

Needs work
10
45%
Is Average
9
41%
Is Good
3
14%
 
Total votes : 22
  • Author
    Message

Unread postAuthor: MrCrowley » Sat Jan 03, 2009 11:57 pm

It shoots @ 100psi and i estimate that it will launch a marble almost 2 football fields

Probably closer to 100-120yards because of the short barrel.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: jook13 » Sun Jan 04, 2009 12:07 am

I ran this gun in ggdt (totally guessing sizes by the pics) and got a range of 602 feet, or pretty much exactaly 2 football fields. Of course I could be way off on guessing my sizes.

My guesses:
3" x 16" chamber
1/2" x 16" barrel
flow coef of 20%

But when I change the barrel length to 48 inches, I get a range of 1131 feet. So yeah, put a longer barrel on there and get close to double the performance...

edit... P.S. how much would a marble weigh?
  • 0

I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
User avatar
jook13
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona
Reputation: 0

Unread postAuthor: MrCrowley » Sun Jan 04, 2009 12:20 am

I got about the same. But taking personal experience into account, I don't see this going two football fields. Thinking about my above guesstimate, it's probably closer to 100-120m.

The short barrel is hampering performance hugely, no doubt is this cannon capable of the distance, but not with this barrel IMO.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: biggsauce » Mon Jan 05, 2009 12:53 am

regardless of performance, it probably sets a record for most use of string on a spudgun :D
  • 0

User avatar
biggsauce
Captain
Captain
 
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm
Reputation: 0

Unread postAuthor: starman » Mon Jan 05, 2009 1:02 am

biggsauce wrote:regardless of performance, it probably sets a record for most use of string on a spudgun :D


Well how about that...I haven't noticed the string on the new pic until you mentioned it bigsauce. There was some guy who used twine string to "pop" open a pilot about a year ago...yes it was a disaster cannon.

Ummm Baggage, why don't you use a hose clamp?
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Unread postAuthor: SaggingBaggage » Mon Jan 05, 2009 1:15 am

Lol, the string was to cover up the ugly mangled piece of pvc inside it, there was tape behind it so it wasn't for support. But it was really getting annoying because the string would move and what-not. Any who, the newest support for the barrel is sambuca bottle caps ;D! What do you guys think looks better?
  • 0

User avatar
SaggingBaggage
Private
Private
 
Posts: 10
Joined: Tue Dec 30, 2008 8:47 pm
Reputation: 0

Unread postAuthor: starman » Mon Jan 05, 2009 2:14 am

Well, the red caps sort of make it look like a tinker toy...I think I liked the string better... :roll: It would actually look a whole better if you would replace that chamber with pressure rated parts. Those flat end caps scare the daylights out of me.
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: SaggingBaggage » Mon Jan 05, 2009 11:07 am

lol, well i was gunna paint this one and move the trigger to the back, and the tank was so big because i thought i could get multiple shots out of it! But i have decided that im not putting anymore work into this cannon and im going to make a new one that shot tennis balls once i learn A) how to make a piston gun and B) how to get multiple shots out of one tank.
  • 0

User avatar
SaggingBaggage
Private
Private
 
Posts: 10
Joined: Tue Dec 30, 2008 8:47 pm
Reputation: 0

Previous

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'