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 46 users online :: 4 registered, 0 hidden and 42 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

How far has someone shot a golf ball via a pneumatic cannon

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

How far has someone shot a golf ball via a pneumatic cannon

Unread postAuthor: 357Wood » Sat Apr 22, 2006 9:56 pm

I'm building my second golf ball cannon. My first one (Two 3 ft x 2" PVC chambers dumping through a single 1" sprinkler valve into 3 ft of Schedule 80 PVC) could only send a golf ball somewhat over 300 yds. I also noticed that a good 40psi was left in the chamber after firing, so I think there was a lot of power not utilized.

I'm now building a coaxial cannon with 3" PVC surrounding 2" schedule 80 PVC with two 1" sprinkler valves. It will have a lot smaller air capacity in the single chamber (with the barrel through the middle of it), but better flow characteristics. Hopefully I will add some distance.

When it's built, I'll send it through a ballistic chronometer, so I can see how well it does. Unfortunately, I didn't do that with the original gun.

Does anyone have any idea if a golf ball cannon can send a golf ball over 500 yds (my goal is to drive a par-5 in a scramble from the tee.)?
  • 0


357Wood
Private
Private
 
Posts: 15
Joined: Tue Apr 18, 2006 7:33 pm
Reputation: 0

Unread postAuthor: SpudStuff » Sat Apr 22, 2006 10:00 pm

with sch 80 sleaved with 1.5 inch sdr 21 pipe golf ball fit much better and will go much farther
if the par 5 is 500 yard say, you could probably go 750-800 yords

i persomally have acheived a 79 second hang time with a boly bullet out of my carrot cannon :x
  • 0

User avatar
SpudStuff
Major General
Major General
 
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Reputation: 1

Unread postAuthor: 357Wood » Sat Apr 22, 2006 10:10 pm

I'm actually working on getting some sdr21 sleaved from Pimpmann, so that may very well be the next barrel for my gun. It would likely have to be a non-coaxial design (I can't imagine having a 4" barrel with sleaved sdr-21 inside 2" sch 80, but I guess anything is possible.
  • 0


357Wood
Private
Private
 
Posts: 15
Joined: Tue Apr 18, 2006 7:33 pm
Reputation: 0

Unread postAuthor: WOW!! » Sat Apr 22, 2006 11:09 pm

Holy S*^# Its Still Going wrote:with sch 80 sleaved with 1.5 inch sdr 21 pipe golf ball fit much better and will go much farther
if the par 5 is 500 yard say, you could probably go 750-800 yords

i persomally have acheived a 79 second hang time with a boly bullet out of my carrot cannon :x


I have 2 things to say...
1.What is a boly bullet?
2. DAAAAMMMMMMMMMM :shock: :shock:
  • 0

User avatar
WOW!!
Brigadier General
Brigadier General
 
Posts: 889
Joined: Thu Mar 16, 2006 9:47 pm
Location: New jersey
Reputation: 0

Unread postAuthor: Benny » Sat Apr 22, 2006 11:43 pm

i got 82.5 seconds with a ball bearing and my qev cannon, the competiton is on. :twisted:
  • 0


Benny
Brigadier General
Brigadier General
 
Posts: 844
Joined: Wed Apr 19, 2006 8:21 pm
Location: Tasmania, Australia.
Reputation: 0

Unread postAuthor: CS » Sun Apr 23, 2006 1:08 pm

I got the money today so Ill be trying to ship out tomorrow.

As you pointed out it only went ~300yds, and there was ~40psi in the chamber. So that tells me you have wasted power. Your projectile is exiting the barrel before the force acting on the GB reaches it full potential.

You should download GGDT if you haven’t already, it allows you to tinker with dimensions and from that you can decide which is most efficient for you application. The download can be found <a href="http://www.thehalls-in-bfe.com/GGDT/download.html">here</a> (for some reason its not working for me right now) Ignore the distance calculations because those wont be even close to what they will be in reality. This is because aerodynamics are not factored. A 46 gram flat faced projectile would be calculated to go just as far as a 46 gram spherical golf ball. Then on top of that consider that by only adding dimples to the spherical shape, that its distance will increase by a whopping 400%.

Ive been meaning to do some testing on them, but im being overwhelmed with two money sucking projects…
  • 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: boilingleadbath » Sun Apr 23, 2006 3:24 pm

Pimpmann, the GGDT's flight simulator does account for drag. It's pretty much worthless if you install a hop-up device however, as it doesn't account for the magnus effect.

Personaly, with a hop-up device (adjusted to 2-3 Gs of lift) and a 5' barrel at 60 psi, I'v sent a golfball ~500-700 yards down a mild hill.
The range estimation wasn't made by me, however, as I lost track of the ball.
  • 0

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

Sponsored

Sponsor
 


Return to General Spud Cannon Related

Who is online

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

Reputation System ©'