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 60 users online :: 5 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], Majestic-12 [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

MG-20

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

MG-20

Unread postAuthor: sniper hero » Sun May 18, 2008 9:12 am

this is my marble gun :D
it use a sprinkler valve
the piping for the chamber is 28mm
the barrel is 16mm (marble)
I haven't shoot with it but I did some tests and the pilot valve starts leaking at 6 bar :(
I need to get a better one
I hope my chamber is big enough to do 2 shots if I put 14 bar on it
more specs are soon to come
  • 0

Attachments
CIMG1061.JPG
CIMG1062.JPG
CIMG1063.JPG
I will buy an elbow to place the vave like this
CIMG1060.JPG
Last edited by sniper hero on Sun May 18, 2008 10:58 am, edited 1 time in total.
proud member of dutch spud clan
coming: semi auto pellet sniper:D
User avatar
sniper hero
Captain
Captain
 
Posts: 332
Joined: Fri Mar 07, 2008 3:12 pm
Reputation: 0

Unread postAuthor: jrrdw » Sun May 18, 2008 9:19 am

Yes, the add of the elbow will help with the looks and ease in handleing. The leaking mite be due to limitations of the pilot valve. What is the pressure rating on it?

All in all, nice cannon.
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6538
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: sniper hero » Sun May 18, 2008 9:29 am

thnx
yes it is the rating for sure
I found a cap that fits in the pilot so maybe I can put it in wile pumping and get it out before shooting
  • 0

proud member of dutch spud clan
coming: semi auto pellet sniper:D
User avatar
sniper hero
Captain
Captain
 
Posts: 332
Joined: Fri Mar 07, 2008 3:12 pm
Reputation: 0

Unread postAuthor: jrrdw » Sun May 18, 2008 9:43 am

The problem with that mite be when you remove the cap it may cause a miss fire. Know what I mean?
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6538
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: SpudFarm » Sun May 18, 2008 10:01 am

or turn the blowgun the right way again.
  • 0

"Made in France"
- A spud gun insurance.
User avatar
SpudFarm
Donating Member
Donating Member
 
Posts: 2563
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area
Reputation: 0

Unread postAuthor: sniper hero » Sun May 18, 2008 10:43 am

I know what both of you mean but think I need to buy a better one.
  • 0

proud member of dutch spud clan
coming: semi auto pellet sniper:D
User avatar
sniper hero
Captain
Captain
 
Posts: 332
Joined: Fri Mar 07, 2008 3:12 pm
Reputation: 0

Unread postAuthor: Mitchza89 » Mon May 19, 2008 12:47 am

Nice gun mate. The problem is the blowgun you're using. They aren't meant to be used flipped around in that fashion. The Poppet valve in the blowgun when it's hooked up properly, uses the pressure behind it to push and make a seal firm against the blowgun lip. If the blowgun is flipped around, the poppet valve is only as strong as the spring behind it so it will leak at a cirtain point. The pressure will be too much for the poppet valve spring so just like a pop off pressure release valve, it'll give way eventually. At 30psi for example.

The solution is very simple. You need the inline style of blowgun that can be bought for a few bucks. I hope this helps mate :wink:
  • 0

Attachments
Blow_Gun_BG605.jpg
Blow_Gun_BG605.jpg (8.81 KiB) Viewed 1772 times
Image
User avatar
Mitchza89
Brigadier General
Brigadier General
 
Posts: 1056
Joined: Tue Jan 09, 2007 12:05 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: XxtriviumxX » Mon May 19, 2008 1:23 am

Or you could flip the blowgun over like so...

<a href="http://s164.photobucket.com/albums/u5/WEENINJA_2007/?action=view&current=Spuddie1-1.jpg" target="_blank"><img src="http://i164.photobucket.com/albums/u5/WEENINJA_2007/Spuddie1-1.jpg" border="0" alt="Photobucket"></a>

Sorry about the small pic.
:D
  • 0

User avatar
XxtriviumxX
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Wed Apr 18, 2007 9:54 pm
Location: Australia
Reputation: 0

Unread postAuthor: Mitchza89 » Mon May 19, 2008 1:25 am

Yeah thats another idea aswell. 2nd Option is to just run a bit of hose from the bottom of the gun to the valve. There shouldn't be a great deal of pilot area.
  • 0

Image
User avatar
Mitchza89
Brigadier General
Brigadier General
 
Posts: 1056
Joined: Tue Jan 09, 2007 12:05 am
Reputation: 0

Unread postAuthor: sniper hero » Mon May 19, 2008 6:18 am

yes a normal blowgun I can't get were I live
I will just flip it around I don't know if that works
thx for helping and giving suggestions :D
  • 0

proud member of dutch spud clan
coming: semi auto pellet sniper:D
User avatar
sniper hero
Captain
Captain
 
Posts: 332
Joined: Fri Mar 07, 2008 3:12 pm
Reputation: 0

Unread postAuthor: Mitchza89 » Mon May 19, 2008 6:22 am

Yeah flipping it around would do the trick fine. Happy spudding! :D
  • 0

Image
User avatar
Mitchza89
Brigadier General
Brigadier General
 
Posts: 1056
Joined: Tue Jan 09, 2007 12:05 am
Reputation: 0

Unread postAuthor: sniper hero » Mon May 19, 2008 7:33 am

I just tested it with the valve flipped around and it works :D
a made some video's and when a made some more I will try putting them here on the site in a compilation

today I only can shoot in the cellar and I already shot straight through the door

I hope I can go outside soon and shoot some apples and water bottles maybe glass :twisted: and film it
  • 0

proud member of dutch spud clan
coming: semi auto pellet sniper:D
User avatar
sniper hero
Captain
Captain
 
Posts: 332
Joined: Fri Mar 07, 2008 3:12 pm
Reputation: 0

Unread postAuthor: SpudFarm » Mon May 19, 2008 7:47 am

i had the same problem eith a similar blow gun so it is nothing new :)


get the vids up and running :D
  • 0

"Made in France"
- A spud gun insurance.
User avatar
SpudFarm
Donating Member
Donating Member
 
Posts: 2563
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area
Reputation: 0

Unread postAuthor: psycix » Mon May 19, 2008 11:50 am

Nice cannon sniper hero!
Wasnt this gun some day supposed to have a piston valve? But you had a too small tee?

Will the piston version come someday?
  • 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: rcman50166 » Mon May 19, 2008 11:54 am

You could always attach an air hose between the sprinkler and the air gun. Then you could orient it any direction and in any place on the gun.
  • 0

Image
User avatar
rcman50166
Colonel
Colonel
 
Posts: 697
Joined: Sat Jan 19, 2008 7:11 pm
Location: Bethel, CT
Reputation: 0

Next

Return to Pneumatic Cannon Database

Who is online

Registered users: Bing [Bot], Google [Bot], Majestic-12 [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'