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 62 users online :: 4 registered, 1 hidden and 57 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

Deathray Marble Machine Gun

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 

Have I finally topped the sawed-off

Yes!!!
23
50%
well...YES!!
18
39%
I don´t like full auto guns that can shoot through guitars
5
11%
 
Total votes : 46
  • Author
    Message

Unread postAuthor: pizlo » Mon Mar 17, 2008 1:53 pm

POLAND_SPUD wrote:pizlo... what do you mean?
you told that as if there were dozens of semiautos on spudfiles... :D

Ahh yes, but any gun with a fast enough compressor is a gravity feed clip can be semmi. And even then semis are also few and far between, but there are more of them then there are full autos(excluding bbmg)
  • 0

User avatar
pizlo
Brigadier General
Brigadier General
 
Posts: 783
Joined: Fri Dec 22, 2006 7:27 pm
Reputation: 0

Unread postAuthor: POLAND_SPUD » Mon Mar 17, 2008 10:43 pm

but is there even one relatively powerful semiauto gun here ?? name one...

don't forget that you can build a marble fed fullauto cloud or vortex without any problem...

I think that BtB has the possibility to convert his gun to semiauto.... this way he could post some vids while he is still working on full auto version and that valve of his design...
  • 0

User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Brian the brain » Tue Mar 18, 2008 3:36 pm

Well...version 3 of the snapvalve failed...And I'm done trying the full auto piston thing.

I'm not giving up on full auto though.
I'm gonna go with what I know works.I will use the first MMG I made as an example.I will shorten the rise tube it had and I will have more flow and MUCH more pressure this time, and smaller, uniform .50 lead ammo.

The first one worked reasonable well, but was a bit bulky and just not powerful enough.

So instead of trying to build something new, it makes more sense to build what worked in the first place, but this time with all the stuff that one should have had..

Boy...I'm not making sense am I?
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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: Mitchza89 » Wed Mar 19, 2008 9:03 am

One of the many perils of spudguns. I've never made a piston gun that I've been totally happy with....Something always gives way or breaks after a couple of days of heavy shooting... Making the pump and discovering high pressures just makes things crap themselves even faster.... But I am using small bore after all.... Anything over 12mm is a bit easier to work with :D

Best of luck with the build mate.

Curious... I've always been wondering on where the hell you got that ball valve you used for ya riot gun....It's very, very odd...
  • 0

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

Unread postAuthor: STHORNE » Wed Mar 19, 2008 9:17 am

wow this is an old thread lol. still going on though i see.
  • 0

Forum Rules - follow them or else!
“Happiness is the meaning and the purpose of life, the whole aim and end of human existence”
User avatar
STHORNE
Donating Member
Donating Member
 
Posts: 1208
Joined: Wed Feb 14, 2007 7:50 pm
Location: Kewaunee, Wisconsin
Reputation: 0

Unread postAuthor: Brian the brain » Thu Mar 20, 2008 2:56 pm

Curious... I've always been wondering on where the hell you got that ball valve you used for ya riot gun....It's very, very odd...


I got it at a store... :lol:

It is a brass compression fitting-BV commonly used around fire hoses in buildings in my country.
They came in handy to connect all sorts of stuff while the main "system remained the same.
I can get a lot of odd stuff, not all, but some of those things are quite usefull for spudding.
The great thing is, I don;t need BV's like that any more now I can pretty much tap every thing myself.

I have a design in mind for the revived-and-improved MMG.I have finished the rise tube and ammo feed set up and the pressure lines to power it.
Notice I did not say barrel...

That..will have to wait until I got permission from the pregnant boss :D
She somehow feels it's not a priority..
Women :roll:
Anyway..that will not be a problem, just need to get some ( common around here) 15 mm copper.
The principle is to have the ammo follow the constant airstream, not unlike a cloud.
The difference will be the pressure used ( 40 bar) and improved flow.
I believe the Girandoni rifle already prooved what 40 bar behind a big lead ball can do over two centuries ago.
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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: scottcrete » Fri Mar 28, 2008 7:34 am

very nice.. great job.. lets see a video of you pounding a water jug. (not a girls boob either) a real jug
  • 0

User avatar
scottcrete
Captain
Captain
 
Posts: 333
Joined: Tue Mar 18, 2008 1:26 am
Location: Bridgeport, West Virginia USA
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Brian the brain » Fri Mar 28, 2008 1:13 pm

It didn't work very well.I had to pump the trigger to get it to work and got 1 shot every 2 seconds.
THey were powerfull shots nonetheless, but not what I was after.

I continued the deathray-series with an "airsoft"-machine pistol-strafer at 500-900 psi.
Pretty scary result....

Check out the Deathray MP thread
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

Previous

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'