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 55 users online :: 4 registered, 0 hidden and 51 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

" Old Shatterhand" 5 shot mag now cycling on vid.

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

Unread postAuthor: Brian the brain » Fri Oct 30, 2009 11:09 am

I was thinking, instead of a hammer, using a solid steel rod, attacked to a spring, so instead of having the hammer move through an arc and strike the valve, it will move in a straight line and strike the valve. I want to do it this way because i want the hammer mechanism to fit inside my stock, as well as be cocked using a horizontal pull, like modern day rifles.


Then go for it.No diagram of mine would be useful though.

Give it a few years

Yes..I hope to be as pretty as that in a few..
But I'll have to do with what I got now..

I think you'll find it's the spongy bit filling with fluid that givs your bolt its strength

It depends ...your picture is not working...for me..
  • 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: Marco321 » Fri Oct 30, 2009 7:40 pm

Brian the brain wrote:Then go for it.No diagram of mine would be useful though.


My tools I have are a bench grinder, dremmel and then an array of hand tools. My gun will be say a max pressure of like 100psi (basically due to sound considerations since in I'm Australia). 

My main problem is the sear system, I have one worked out, but I'm worried about shear and normal forces acting on the axle of the components. But since I'm only reaching 100psi and the push button is about 4mm in diamter, I don't think the spring has to be super strong? The hammer will be a metal pipe filled with epoxy, and the front will be faced with a washer and bolt. The back will have a hole bored into it for the guiding rod. The spring will go on the guiding rod, and the back of the rod will have a washer to brace the spring.

Brian the brain wrote:
I think you'll find it's the spongy bit filling with fluid that givs your bolt its strength

It depends ...your picture is not working...for me..


Hahahha speak for yourself :p
  • 0

Failure to plan is planning to fail.

The 7 P's - Proper Prior Preparation Prevents Piss Poor Performance
User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: poppamies » Wed Nov 04, 2009 11:47 am

what kind of fill valve do you got on this? very cool gun! thinking to built one bullpup version
  • 0


poppamies
Private First Class
Private First Class
 
Posts: 30
Joined: Tue Mar 17, 2009 4:07 pm
Reputation: 0

Unread postAuthor: Brian the brain » Wed Nov 04, 2009 5:26 pm

I just use a male QD on the outside of the endcap and a safety pop-off on the inside of the same threads.
I adjusted the pop-off to open at very low pressure differential.

Yesterday I finished a new barrel for this one. I found 35 ballbearings ( hard steel!) with a diameter of exactly 16 mm wich just wouldn't fit the old one.

Upside is I could do some things differently now.
The barrel is 15 cm longer than the ( sleeved) old one.
I no longer sleeved it because I simply polished the aluminium barrel for looks.
So the frontheavy-ness is mostly gone too as the sleeve was a big factor.

I also prepared the breech to accept magazine fed action.
This tubemag, currently under construction will run aside the barrel on the left side of the gun.
So it will be...cocking the hammer *while slipping my hands onto the bolt *handle..click clack..and boom!
Repeat if necessary
I also added some rubber rings around the bolt to make the action quieter ( bumper) and keep some pressure on the bolt in sealed position so it won't open accidentally.The rubber washer helps to keep it locked.It is not envolved in the actual seal.

So...it's all details now..
  • 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: Mr.Sandman » Wed Nov 04, 2009 7:13 pm

Brian the brain wrote:I just use a male QD on the outside of the endcap and a safety pop-off on the inside of the same threads.
I adjusted the pop-off to open at very low pressure differential.

Ha ha. You say that as if it were a typical feature on any pneumatic. Yea its only just a really sexy repeater that i made *yawns*. Hmm looks like the bolt needs some polishing. Break out the toothpaste! Ever try a shotgun load in this gun?
  • 0

Yeah, it's that important.
User avatar
Mr.Sandman
Donating Member
Donating Member
 
Posts: 762
Joined: Fri Mar 28, 2008 9:10 am
Country: Antarctica (aq)
Reputation: 0

Unread postAuthor: ramses » Wed Nov 04, 2009 9:04 pm

pickies no workies on first page again. Could you post a diagram of the bolt with the air input and the future input from the tube mag.

Good luck with the tube mag!
  • 0

POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
User avatar
ramses
Major General
Major General
 
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm
Reputation: 3

Unread postAuthor: POLAND_SPUD » Wed Nov 04, 2009 9:31 pm

I found 35 ballbearings ( hard steel!) with a diameter of exactly 16 mm wich just wouldn't fit the old one
it would be a better idea to check the price of 16mm BBs first
these things get quite expensive with size
  • 0

Children are the future

unless we stop them now
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

Sponsored

Sponsor
 


Unread postAuthor: Brian the brain » Thu Nov 05, 2009 12:51 pm

I plan to reuse them.Well...as much as possible.
It will still accept marbles..Just need to sort them out for the mag to work properly.

I got 35 brianthebrainings...I mean...ballbearings for 3.50 euro.


Furthermore..I don't shoot any of my guns very often.
Most are just testshots, the rest is to put on video or to demonstrate.

They might last a couple of years.

I tried bb buckshot on this thing, it wasn't vey interesting..just left a hole...and half of an empty ( pricey) can of bb's.
All were deformed.
  • 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: Brian the brain » Sat Nov 07, 2009 6:09 pm

UPDATE!
( 2K-post!!)
Detachable 5 shot magazine is working!
I still have to finish it, smoothen some of the corners..that kinda stuff.

But amazingly it works! I couldn't figure out how to mount it...but things just started to happen so to speak.
It is held firmly in place by a bracket with some rubber to keep it holding on tight.

The only spring I had that could do the job regretfully could only be used to load 5 balls.
With one in the " chamber" this means I can still do all of the good shots...before power goes down too much.
I can slip off the mag easily and just breechload by hand.

Oh BtW..do you like the new barrel? Seems a bit cleaner...
I like it the way it is now.
  • 0

Attachments
magazineshatterhand 004.JPG
You can see the marble inside wich is glued to the magspring.The only way to push out the last BB.
The bracket slides in between the barrel and chamber and locks in position between the black sideplates of the body.
magazineshatterhand 003.JPG
so proud right now..Notice the rubber washers on the bolt wich help to keep it locked and work as a bumper for the action.
magazineshatterhand 002.JPG
A little peek from a different angle.
Tried to keep it as low profile as possible.It might need a small brass ornament to " break" the squared look though.
You can see a small portion of the hammer over on the right side..I can now cock it and work the bolt in a single move..and get up to 6 shots in a short timeframe.
magazineshatterhand 001.JPG
Until recently I've mostly shown the hammer side of the gun..now this side has some interesting features of it's own..
Last edited by Brian the brain on Sun Nov 08, 2009 3:50 pm, edited 1 time in total.
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: POLAND_SPUD » Sat Nov 07, 2009 6:29 pm

that's a very clever magazine
  • 0

Children are the future

unless we stop them now
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: jackssmirkingrevenge » Sun Nov 08, 2009 9:45 am

n-i-i-i-i-ce, video of the bolt + magazine being cycled?
  • 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: Brian the brain » Sun Nov 08, 2009 10:12 am

First I will add another small bracket so the tip can't move away from the breech.Some type of thing on the body itself for the mag to slide into..

It can wobble a bit now and I don't want it to. A simple fix, but I still need to do it.

And..I really need to fire it if I want more than one cycle...
That will require me to go someplace safe..
Don't want to upset the neighbours. ( 42 bar now remember!).
Can't shoot it at work since we've moved to a brand new building.. :oops:

They will notice the impacts in the wall now...

Oh..I got a nice leather sling for it today...Slightly decorated..I'll see if I can attach it in an aestethic way...
  • 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: dewey-1 » Sun Nov 08, 2009 1:21 pm

Brian; Very impressive work.
That is a masterpiece of art, design and workmanship!

It is one of my all time favorite pneumatic launchers!
Keep up the excellent ideas and creativity.
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: CpTn_lAw » Sun Nov 08, 2009 2:43 pm

It really is a true beauty! I'm amazed !! I mean, this thing is eye-candy AND it's functionnal!
  • 0

"J'mets mes pieds où j'veux, et c'est souvent dans la gueule."
User avatar
CpTn_lAw
Brigadier General
Brigadier General
 
Posts: 987
Joined: Sun Sep 11, 2005 9:10 am
Location: France
Reputation: 0

Unread postAuthor: Ragnarok » Sun Nov 08, 2009 5:59 pm

I'm impressed.

One question however... how did we reach November 11th (as per the topic title)?

I know you're an hour ahead of me, but that wouldn't even quite put you into November 9th.
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

PreviousNext

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'