New Piston BB Gun

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
Post Reply
User avatar
Sergeant Dotson
Specialist
Specialist
Posts: 149
Joined: Mon Jan 21, 2008 5:53 pm
Location: Tennessee

Sun Mar 16, 2008 6:10 pm

I just recently finished this bb gun. It has a piston made of hot glue attached to what is a hammer that strikes the BB in the barrel. I will glue the casing together and give it a new paint job soon but I'm going on a trip so it will be about a week. These pics should explain it all.
Attachments
Cut in half view. Basically, when air is applied, it pushes the piston off the solid metal (which blocks the the air from escaping through the tube). Then the tube hits the bb in the barrel. Since the piston is off the piece of solid metal, it allows the air to escape after the bb has been hit.
Cut in half view. Basically, when air is applied, it pushes the piston off the solid metal (which blocks the the air from escaping through the tube). Then the tube hits the bb in the barrel. Since the piston is off the piece of solid metal, it allows the air to escape after the bb has been hit.
untitled.JPG (7.26 KiB) Viewed 5164 times
Barrel.
Barrel.
Piston and spring.
Piston and spring.
Piston.
Piston.
Top
User avatar
Cosmic Muffin
Specialist 2
Specialist 2
Posts: 275
Joined: Mon Jan 14, 2008 10:30 pm
Location: arse end of nowhere

Mon Mar 17, 2008 5:39 am

hmmm i like the idea but its been done about 3 times still it shood be good
you just need a loading system
Top
OuchProgramme
Specialist 3
Specialist 3
Posts: 371
Joined: Sat Jan 12, 2008 7:30 pm

Mon Mar 17, 2008 6:43 pm

Cosmic Muffin wrote:hmmm i like the idea but its been done about 3 times still it shood be good
you just need a loading system
Gravtiy fed mag :)
Top
User avatar
elitesniper
Sergeant
Sergeant
Posts: 1090
Joined: Sat Oct 13, 2007 8:40 pm

Mon Mar 17, 2008 6:50 pm

cool, but is that barrel a pen tube? or...
Top
User avatar
Sergeant Dotson
Specialist
Specialist
Posts: 149
Joined: Mon Jan 21, 2008 5:53 pm
Location: Tennessee

Tue Mar 18, 2008 3:56 pm

No, the barrel is all thread and I am going to cut the barrel and put in a t connector for a gravity fed mag. :D
Top
User avatar
ghostman01
Specialist 3
Specialist 3
Posts: 372
Joined: Fri Nov 23, 2007 9:15 am

Tue Mar 18, 2008 4:29 pm

looks like jacks semi
Image
Ultimateforum
I have 27 different kinds of weapons in my home, do not attempt to trespass........!
Top
User avatar
Antonio
Corporal
Corporal
Posts: 508
Joined: Sun Aug 13, 2006 2:38 pm

Fri Jun 20, 2008 4:13 am

Its like the blowforward breech system. But I think this one has less turbulance as the path of the air is a straight line. I think your piston parts look a bit too heavy though. I mean u dont wanna loose energy by pushing that piston forward> u want to use it to propel the projectile.
Top
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 344 times

Donating Members

Fri Jun 20, 2008 6:28 am

ant wrote:Its like the blowforward breech system. But I think this one has less turbulance as the path of the air is a straight line.
It's pretty much the same thing.

Image

You'll be needing a longer barrel for significant power at compressor pressures though.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Top
User avatar
Antonio
Corporal
Corporal
Posts: 508
Joined: Sun Aug 13, 2006 2:38 pm

Fri Jun 20, 2008 7:18 am

jackssmirkingrevenge wrote:
It's pretty much

You'll be needing a longer barrel for significant power at compressor pressures though.
Ah k I am sorry, I thought yours had holes at the side op te sliding part.
Top
Post Reply

Return to “BB, Airsoft, and Pellet Guns”