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 65 users online :: 3 registered, 0 hidden and 62 guests


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

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

DD1Wood.... Daly's Daddy #1 wood

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 
  • Author
    Message

DD1Wood.... Daly's Daddy #1 wood

Unread postAuthor: jeepkahn » Sat Feb 28, 2009 4:49 pm

I figured since it is a GB gun, might as well use a Golf referance to name it...

The only thing left is to paint the tripod and put a Ping sticker on it...

It's a 4"x56" chamber SDR21 sleeved into sch80, 114" barrel length...

The chamber is overlaid in black cloth duct tape, spiral wrapped with a 1/2 overlap, and then taped linearly with 1/2 overlap, and then another spiral wrap half overlap going the other direction, the tape is 6 layers thick at any one point... The overlay serves 3 purposes, 1. protect the chamber from dings and scratches, 2. Help to keep the chamber from swelling under pressure, 3. in case, Heaven Forbid, there's a catastrophic chamber failure it will keep schrapnel to a minimum, and 4. It looks really cool!!!

Some pics you've seen, but this one is with the tripod I just completed... it has full up/down and side to side movement, it'll even spin 360 degrees...

Some may notice the handle/trigger mechanism, it was canabalized from a pneumatic tire bead seater, you keep the supply line hooked up and all you have to do is squeeze the trigger to fill(about 4sec. with a large compressor) and release to fire, but it actually fills/pilots a 3/4" qev....


Whatcha think??? Other than the lighting in the pic sux...

I'll try to get some better pics up soon, with more detail on the trigger/handle....
  • 0

Attachments
golfguntripod.jpg
Last edited by jeepkahn on Sat Feb 28, 2009 8:28 pm, edited 1 time in total.

jeepkahn
Colonel
Colonel
 
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA
Reputation: 0

Unread postAuthor: Brian the brain » Sat Feb 28, 2009 6:10 pm

Happy to see I'm not the oldest active member.. :D

It looks okay, very basic, but extremely powerful and large.

I mean..A coax's a coax.. not much you can do lookswise.
The tripod adds to the coolness, and no doubt, handling.

Hard to see what you've done to the pilot.I'd love to know more.

Note:

The duct tape will not give you any real protection.It will keep it from scratching and you won't have to worry about paint chipping off.
If you think it looks good, by all means, keep it on there, but don't rely on it to protect you..
  • 0

User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

Unread postAuthor: jeepkahn » Sat Feb 28, 2009 6:24 pm

I'll get some up close and more detailed pics this week...

the rear leg is removable for transport...

and the2 barrels on the floor are the 3" barrel, and 2" barrel for the modgun...
  • 0


jeepkahn
Colonel
Colonel
 
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA
Reputation: 0

Unread postAuthor: inonickname » Sat Feb 28, 2009 6:38 pm

Duct tape tears like a rag doll and absorbs no where near enough energy to stop shrapnel. But you wont get scratches on it. If you used pressure rated PVC you're in the clear anyway.

Nice big gun and mount 8) good to see that there are people other than the young ones who give spudgunning a bad name..
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: jeepkahn » Sat Feb 28, 2009 7:33 pm

more pics and details... Read photo captions for details...
  • 0

Attachments
gbtripodoverall.jpg
better overall pic, better lighting better camera.
gbbackwards.jpg
Showing 360 degree movement horizontally.
gbdown.jpg
Showing range of motion vertically.
gbup.jpg
showing range of movement vertically. no need to go beyond 45 with this one..
gbpilot.jpg
closeup of fill/pilot... when air is connected it stops here, when you squeeze the button it fills through this valve and through the qev, when you release the button it fires.
gbpivot2.jpg
closeupof pivot, showing how the barrel lifts off.
gbpivot3.jpg
overall shot of pivot layout...

jeepkahn
Colonel
Colonel
 
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Mar 01, 2009 2:13 am

As suggested above, a roll of steel mesh would be much more useful than duct tape if shrapnel prevention is your goal.

What pressure are you running this beast at? Given the spects it should be capable of some serious damage *hint hint*
  • 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

Unread postAuthor: starman » Sun Mar 01, 2009 3:30 am

That sucker should have some pretty nice performance levels. It does look like it's bending just a hair at your pivot point....maybe it's just an optical illusion... :wink:

I agree with the others to some degree on the tape. But while not totalling ineffective, any condition that would cause sched 80 pvc to shatter into shrapnel isn't going to be hindered any by your 6 layers of tape. That comment is actually more a testament to the strength of the pvc rather than the weakness of the tape.

That also says that the chances of sending this particular cannon to the shrapnel heap is slim to none if you keep your psi levels in the sane zone...say 250 psi or less.
  • 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: psycix » Mon Mar 02, 2009 2:47 pm

Nice!
I love the tripod.

Besides for looks, the tape is just a waste.


Now I wonder, are you taping it in because you are using it beyond its rated pressure hmm?
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: jeepkahn » Mon Mar 02, 2009 4:11 pm

The duct tape is more to protect the chamber from damage(nicks dings scratches), than for protecting bystanders from schrapnel(if it helps it helps but if not, that's not why it's there), and to help combat swelling(albeit swelling is not much, but It prolly can't hurt)Remember this is the cloth type not your standard stuff, and looks... but mainly to protect the chamber...which BTW is Sch40, rated to 220 at 70 degrees...

I've posted damage shots from this gun in the doing testing thread, I haven't taken it over 125psi YET, but even with 125 it reports like a .50cal rifle... I am looking forward to some chrony testing soon...

The "bending" you see is actually because the rear leg is round sch40 steel that slips into a Square socket, so there's a lil slop that makes it look like it's bending...
  • 0


jeepkahn
Colonel
Colonel
 
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA
Reputation: 0

Unread postAuthor: maverik94 » Tue Mar 03, 2009 9:41 pm

its a beautiful gun, any damage shots, or reports?
  • 0

User avatar
maverik94
Colonel
Colonel
 
Posts: 558
Joined: Wed Jan 21, 2009 4:48 pm
Reputation: 0

Unread postAuthor: rna_duelers » Wed Mar 04, 2009 4:35 am

Nice build,Love large coax.I'm with jack on this *cough cough* damage pics.

I've currently got a dodgy light socket in my room and it won't allow a light bulb to sit in it for longer than 20 seconds before either pop or it falls out.Gosh typing in the dark is annoying,yet I continue...
  • 0

Image
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: rna_duelers » Wed Mar 04, 2009 4:35 am

Nice build,Love large coax.I'm with jack on this *cough cough* damage pics.

I've currently got a dodgy light socket in my room and it won't allow a light bulb to sit in it for longer than 20 seconds before either pop or it falls out.Gosh typing in the dark is annoying,yet I continue...
  • 0

Image
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

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'