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 59 users online :: 4 registered, 0 hidden and 55 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

Need some ideas for a Air powered golf ball cannon

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Need some ideas for a Air powered golf ball cannon

Unread postAuthor: Northir » Fri Sep 11, 2009 11:47 pm

just like it says im making a golf ball cannon, and was hoping you guys had some tips, i only get 100 psi to work with, all ready know i need to pick up some class 200 pipe, and probably a 2" piston valve
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: MrCrowley » Sat Sep 12, 2009 12:13 am

  • 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: Northir » Sat Sep 12, 2009 12:20 am

i like the second one, do you know the muzzle velocity? im looking for maximum power
and does it push full sized golf ball?

EDIT: nvm :) i see your specs now, i think im going to build this, just need to figure out how to build a damn piston valve now
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: MrCrowley » Sat Sep 12, 2009 12:32 am

Northir wrote:i like the second one, do you know the muzzle velocity? im looking for maximum power
and does it push full sized golf ball?

Muzzle velocity was about 160m/s I think, don't remember exactly but I was shooting aout 420-450m with it.

Yes, it fires a full sized golfball. :roll:
  • 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: Technician1002 » Sat Sep 12, 2009 11:41 am

There are lots of option for building piston valves. The larger sizes are more difficult to get to work. Valve seat imperfections, friction, and forces go up quickly. So do leaks, sticking, and breakage. For this reason many golfball cannons are built with smaller valves.

Study the many designs. Pistons are made from tin cans, plywood, hot melt glue, HDPE (my favorite) and other materials. Remember in larger sizes, small gaps are big leaks.
  • 0

Attachments
PICT246.JPG
HDPE piston turned on a drill press
Last edited by Technician1002 on Sat Sep 12, 2009 2:14 pm, edited 1 time in total.
User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: Northir » Sat Sep 12, 2009 2:04 pm

i dont like leaks >.> at all, anywhere, i have a Sprinkler im throwing away caus it has a small leak, anyways, MrCrowly do you have a GGDT file for your cannon, i think my #s in mine are off, i like to run GGDT be fore i build so i can get the most power, it seems pretty accurate
(This cannon http://www.instructables.com/id/GolfballAntennaNerf-Cannon---Build-One-That-Shoo/?ALLSTEPS)
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Sep 12, 2009 2:43 pm

Northir wrote:just need to figure out how to build a damn piston valve now


On a silver platter :P
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Sponsored

Sponsor
 


Unread postAuthor: Northir » Sat Sep 12, 2009 3:02 pm

headed to Mclendons later for those parts :D hope it works the way i want, my GGDT Sim is telling me 350Fps with 50psi
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: MrCrowley » Sat Sep 12, 2009 5:18 pm

just need to figure out how to build a damn piston valve now

Did you look at both my links? That's the whole purpose of them, how to build a piston valve.
  • 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: Northir » Sat Sep 12, 2009 5:32 pm

yea im atempting to build one now, ill up my current progress
goin for a 1" to start so i can get it down before i build the GB cannon, heres pics
EDIT: not sealing at all i think i need a different sealing face (currently a bike tube)
Image
Image
Image
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: MrCrowley » Sat Sep 12, 2009 6:01 pm

How well of a fit is your piston in the piston housing? It looks like either your sealing face it too large, or your piston is too small.
  • 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: Northir » Sat Sep 12, 2009 6:15 pm

it fits snuggly in my 1" pvc, so it sounds like i did it wrong
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: MrCrowley » Sat Sep 12, 2009 7:07 pm

If the piston fits perfect in your piston housing, that's good. Why don't you trim your sealing face to the same size as your piston?
  • 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: Northir » Sat Sep 12, 2009 8:24 pm

well theres 2 answers for that question, the first is, i lost it lol, and the second is it would slip into my barrel the piston is the same size as my ID of my 1"pcv, on another note, just got back from the hardware store, and all the peices i needed cost me 80$ us >.<
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: Moonbogg » Sat Sep 12, 2009 8:34 pm

Northir wrote:well theres 2 answers for that question, the first is, i lost it lol,


OMG the tears are streaming LOOOOL! Sorry i'm finished now. Good luck.
  • 0

User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Next

Return to Pneumatic Cannon Discussion

Who is online

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

cron
Reputation System ©'