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 41 users online :: 4 registered, 0 hidden and 37 guests


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

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

B2TB: sawed-off 35 bar repeater

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: Necrosis » Sun Jun 08, 2008 9:41 am

That's nice. Great going, whoohoo. yay. go you .. hooray. bravo.
:roll:
  • 0

Allthough we may be the most intelligent creature on this planet, we are also the most inconsistent.
To find peace within our existence we often create a logic that endangers our lives.
User avatar
Necrosis
2nd Lieutenant
2nd Lieutenant
 
Posts: 239
Joined: Tue Jul 03, 2007 10:03 am
Reputation: 0

Unread postAuthor: Mitchza89 » Sun Jun 08, 2008 9:59 am

:shock: Wooooow...






Nuff' said.

:D
  • 0

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

Unread postAuthor: )DEMON( » Sun Jun 08, 2008 10:31 am

Great work Brian, your guns are getting better each time! :D
  • 0

Forever dreaming...
User avatar
)DEMON(
Major General
Major General
 
Posts: 1391
Joined: Sun Mar 12, 2006 1:22 pm
Location: Johannesburg South Africa
Reputation: 0

Unread postAuthor: Brian the brain » Sun Jun 08, 2008 11:35 am

They are aren't they?

About the competition..I'm probably too early...but I couldn't wait...
I really don't want to pay a fee to enter...I could better use that money to buy some stuff, since I probably wouldn't win..

I'd sell this one for...ehmm...say 150 euro's.
No way of getting it out the country though hahaha..

I can still rebuild it into a pump action Jack...I just don;t know if it is worth the extra effort.
I've left the guide for the falling block just in case.
Lever action would look terrible, since the lever would have to be connected to the block from the outside and would have to pivot too far forward.
Also..the shots do go down in power and pump action means more places to leak..
  • 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: psycix » Sun Jun 08, 2008 7:08 pm

Yet another of those BTB high pressure toys :D
Very nice!

Now all we are waiting for is a video showing off that power...
  • 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: jackssmirkingrevenge » Sun Jun 08, 2008 11:50 pm

Now that you're achieved a working hammer mechanism, it shouldn't be too hard to have a handle around the chamber conneted to a rod that's in turn connected to a barrel sleeve, you could easily end up with something like the serbu super shorty :D
  • 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 Jun 08, 2008 11:57 pm

I want it!
:D

Cocking the hammer like that is no problem.
Getting the fallingblock to somewhat seal yet function correctly is the harder part.

but damn...I like that shorty
  • 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

Sponsored

Sponsor
 


Unread postAuthor: THUNDERLORD » Mon Jun 09, 2008 1:12 am

jackssmirkingrevenge wrote:Now that you're achieved a working hammer mechanism, it shouldn't be too hard to have a handle around the chamber conneted to a rod that's in turn connected to a barrel sleeve, you could easily end up with something like the serbu super shorty :D


There was an old one like it called an "AOW" for (beats) any other weapon.
That looks like it only hold three because it's so short but with the right shells that's more lead than a smg sprays anyway.

When I looked at the link I found this http://es.youtube.com/watch?v=KF_wwcOcvjo&feature=related
I think it's airsoft burst disk. But it would be cool if it was real. :wink: 8)
  • 0

-----SPEED,STRENGTH, AND ACCURACY.-----
"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!

THUNDERLORD
Major General
Major General
 
Posts: 1264
Joined: Fri Mar 28, 2008 1:42 pm
Reputation: 0

Unread postAuthor: psycix » Mon Jun 09, 2008 5:00 am

So it leaks at the falling block?
I somewhat expected that, you need to seal between two flat surfaces. Besides from squeezing it, there is not much you can do to get it seal.

Maybe apply an o-ring in a weird way: drill out a circle groove, drop some glue in, put o-ring in. Groove should be a little less deep as the o-ring's thickness.
  • 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: ghostman01 » Mon Jun 09, 2008 5:17 am

so when are we going to be graced with a video of you shooting sh!t ?
  • 0

Image
Ultimateforum
I have 27 different kinds of weapons in my home, do not attempt to trespass........!
User avatar
ghostman01
Major
Major
 
Posts: 372
Joined: Fri Nov 23, 2007 9:15 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Jun 09, 2008 5:45 am

THUNDERLORD wrote:When I looked at the link I found this http://es.youtube.com/watch?v=KF_wwcOcvjo&feature=related
I think it's airsoft burst disk. But it would be cool if it was real. :wink: 8)


That's close to a sawn-off M79 grenade launcher (which would look something like this) that uses preloaded cartridges with multiple barrels to give a large shotgun effect, some pictures of how they work can be found here - it's practically a piston valve, but mechanically retained as opposed to the pneumatic mechanisms we normally use.

Brian, how about boring out the breech slightly to accept a cartridge, then add a spring loaded extractor than engages a lip at the bottom of the cart? Simpler to make than pump action and the visual effect is just as cool :D plus the fact that the extractor is pushing the cart against the block will help with sealing too.
  • 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 » Sat Jun 14, 2008 7:26 am

Okay...So you guys got me into a lot of trouble...me being a crowd pleaser and all...

I went ahead and fitted the gun with a working `falling/block`
Made the whole assembly look smooth with bodyfiller.Leakage is minimal.
I need to get the right return spring for the block.

Just don't have the pump handle working yet...
Still got a lot of work to do.
I have noticed it's becoming a little too real lookin'.
I'm planning on spraying certain parts bright orange so it doesn't freak people out....
  • 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: jackssmirkingrevenge » Sat Jun 14, 2008 7:36 am

Freaking people out is half the fun :D

looking forward to seeing it in action...
  • 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

alsome

Unread postAuthor: airheadnoob » Sat Dec 06, 2008 4:29 am

cool
  • 0


airheadnoob
Corporal
Corporal
 
Posts: 61
Joined: Wed Jan 30, 2008 11:12 am
Reputation: 0

Unread postAuthor: Brian the brain » Sat Dec 06, 2008 12:05 pm

Right...

Not really a contribution to the forum is it?


Anyway, this gun is dissasembled, but not dead.
I'm working on a similar design, fed by a 12 gram CO2 cartridge.
  • 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

PreviousNext

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'