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 57 users online :: 3 registered, 0 hidden and 54 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Camo Golf Ball Cannon

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 

Should I cut the barrel down a bit?

Poll ended at Mon Oct 19, 2009 9:13 pm

Yes
0
No votes
No
6
100%
 
Total votes : 6
  • Author
    Message

Camo Golf Ball Cannon

Unread postAuthor: Reactor4 » Wed Oct 14, 2009 9:13 pm

New cannon i just made. I used a 3/4" rainbird sprinkler valve, the chamber is 3" PW PVC. The thing i did different from a lot of other over/under pvc cannons, is that the "u" bend from the chamber to the valve is made from stainless steel pipe fittings and nipples. I found that last time i used pvc, that general area can take a lot of stress, and if you grab the cannon in the wrong spot, e.g. the barrel :( , it will easily break. So i upgraded. The pressure gauge goes up to 500 psi :D , but i don't plan on taking the needle up there. Otherwise, camo paint job, and it is a breech loader. I'll post some damage pics when the weekend comes around. Please comment as you wish!
  • 0

Attachments
GB Cannon 001.jpg
GB Cannon 002.jpg
GB Cannon 003.jpg
GBCannon.jpg
User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: theBOOM » Wed Oct 14, 2009 9:18 pm

WOW! very nice cannon I have to say that I love the paint job on it very much, that's what makes a cannon so much more original than just a plain white pvc cannon. good job agian :o
  • 0

User avatar
theBOOM
Major
Major
 
Posts: 374
Joined: Wed Jun 03, 2009 10:49 pm
Location: San Antonio, TX
Reputation: 0

Unread postAuthor: Lockednloaded » Wed Oct 14, 2009 9:20 pm

I love the camo scheme and the small pipes with the blowgun and pressure gauge, I always love cannons with lots o bits and pieces. correct me if i'm wrong, but from what i see your breech loading system is on pipe over another, from my experience, if you put an o-ring on either side of your breech, the slide the sleeve over there is not as much leaking. Great cannon though, but lets see some damage pics :twisted:
  • 0

User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: Reactor4 » Wed Oct 14, 2009 9:22 pm

wow, thanks for the tip Lockednloaded, ill have to try that, and yes it is pipe over pipe. thanks for the comments guys! And yea, damage pics will be here either tomorrow or the next day.
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: Lockednloaded » Wed Oct 14, 2009 9:28 pm

yea, no problem glad to help, but if your sleeve is a tight fitt you'll need deep grooves which for me were a bi@tch to make with my hacksaw and pocket knife
  • 0

User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: Technician1002 » Wed Oct 14, 2009 10:56 pm

I hate to be the bearer of bad news, but, there is a big restriction to flow by running through the small diameter plumbing between the chamber and valve. Vast improvements can be made by using pipe that is larger than the valve up from the chamber around the bend to prevent flow velocities near SOS to the valve that would create a huge pressure drop feeding the valve when fired.

Having high speed flow while still having high pressure will make a big difference over the low pressure this delivers to the golf ball when fired.

The sudden pressure drop into the valve when fired will tend to make the valve re-close early when fired due to the rapid loss of apparent chamber pressure into the valve. This rapid loss is often faster than the rate the pilot pressure is dropping which causes the valve to close repeatedly causing the honk this style launcher is know for. This valve close during the shot can be a performance killer. Band aid fixes are a bigger faster trigger pilot valve to reduce honking, but that doesn't fix the flow problem into the valve causing the rapid pressure drop when the valve opens and wants high flow.

Other than a design flaw, nice golfball cannon. I'm sure it launches golf balls pretty far.

If possible get as large as possible a replacement valve and plumbing from the chamber to the valve. It is limiting your power. 1 inch valves are common. 1.5 inch valves are better. Two inch valves are hard to find and massively expensive. I recommend a 1 inch to remain sane with at least 1.5 inch or 2 inch plumbing between the chamber and valve.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: starman » Wed Oct 14, 2009 11:41 pm

Nice looking paint job on your cannon there. I second the flow problem Tech pointed out. Also, not sure why you felt the need to run the fill pipe all the way to the front of the air chamber.

Cool breech load, plumbing a little over concepted. Looks real tech though and that always tends to give you cool points.
  • 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: rikukiakuchiki777 » Thu Oct 15, 2009 1:06 am

This probably isn't a performance cannon, but it definitely looks the part! I absolutely love the camo job, its just swell :D. How did you do it? It just looks brilliant I can't get over it :roll:.

When you get around to it, damage vids/pics please :D

@Lockednloaded - nice avatar picture, team fortress for the win!
  • 0

User avatar
rikukiakuchiki777
Staff Sergeant
Staff Sergeant
 
Posts: 110
Joined: Wed Feb 11, 2009 1:00 am
Location: Australia
Reputation: 0

Unread postAuthor: Reactor4 » Thu Oct 15, 2009 7:28 pm

Thanks for the comments and tips guys. I was originally going to use a 1" valve for the cannon, but i already had a 3/4" one layin around and I had all the fittings too, so I didn't want to go out of the way to pay for the appropriate 1" fittings, money is tight, since I have to drive over 70 miles a day :D .
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'