ok some things to get the 'ye ole' brain cells working...
http://entertainment.howstuffworks.com/question649.htmhttp://en.wikipedia.org/wiki/File:AEG.gifThis site covers everything you need i would imagine in regards to how the system can be worked to your model,
http://bb_ops.tripod.com/RC_Combat/Hind_Guns.htmhttp://www.kutz.com/combat/bbgun.htmI will C&P most of it for ease to other member's who don't like links
(Image that should be here is at the bottom of page)''First thing to discuss is the basic operation of a RC Combat BB gun. For this I'll refer you to the above diagram of a typical poppet-valve operated, piston-interrupted, O-ring style BB gun made up of standard 1/4" compression fittings. There are other methods of building and firing the guns, involving slave valves or electronic solenoids, but for the purposes of this article I'll keep the set-up simple.
From bottom to top (which in our case is the direction of gas flow):
You start with a CO2 source, usually a 3.5 or 7 oz tank in 2 gun cruisers or larger and illustrated here, or a CO2 cartridge like those used in commercial BB and pellet guns for smaller boats;
Per the rules of the International Radio Warship Combat Club (IR/CWCC) guns systems are limited to a working pressure of 150 psi, so some sort of commercially manufactured regulator is required to bring the bottle pressure down to that level;
After the gas leaves the regulator it travels via a supply hose, usually of 1/8" inside diameter (ID) but sometimes other sizes, to a distribution manifold (to split the gas among several guns) or to a single gun as in this case;
The supply gas goes to the poppet valve, a Clippard MAV-2 is shown here, which stops the gas flow until the button to the left is depressed, usually by a servo;
The gas then flows past the valve up into the bottom of interrupter assembly via 1/16 ID tubing. Here the gas splits along two paths:
First the gas pushes the interrupter piston up, allowing only the BB sitting on top of this piston to move toward the breach and blocking those in the magazine;
The rest of the gas will travel to the end of the magazine and then travel down the magazine tube and push the other BB's forward toward the interrupter, then flow past them to carry the BB poised on top of the piston up to the Breach;
The BB on top of the pistion will be carried up to the breach, in this case an O-ring compressed between the inner wall of the 1/4" "L" fitting and the end of the barrel;
The BB will be stopped by this compressed O-ring, blocking the gas flow and allowing the pressure behind the BB to build;
Once sufficient pressure has built up the BB will force its way past the O-ring and out the barrel of the gun, hopefully to strike its target ''
PARTS and TOOLS
First, the parts and tools you are going to need:
Parts
CO2 source
Disposable CO2 Cartridge (small boats with 1-3 guns)
Refillable CO2 Tank in 3.5 to 12 oz sizes (larger boats with 3 or more guns)
One Regulator to attach to CO2 source, max 150 pounds per square inch (PSI) output
50 feet 1/8" ID Urethane Hose
50 feet 1/16" ID Urethane Hose
Two Clippard 1/8" Hose Barbs w/ 10-32 male threads per gun
One or Two Clippard 1/16" Hose Barbs w/ 10-32 male threads per gun
One Clippard MAV-2 Poppet Valve per gun
One 1/4" Plumbing Union Tee per gun
One 1/4" Plumbing Union Elbow per gun
One 1/4" Plumbing Union per gun
Several feet of 1/4" OD copper or brass tubing
3 feet each of 1/16", 7/32", 1/4", 9/32", and 5/16" OD Round Brass Tube per gun
1 small sheet of thin brass (1/16" or 1/32" thick)
Piston material - penny nail, brass/aluminum rivet, etc.
1/4" (2-3 coils) of a small spring (large enough to fit over stem of piston)
Teflon Pipe-Tape
Tools
Propane Torch
Solder
Flux
Tube Cutter
Metal Cutting Shears
Drill or Drill Press
Vise or other support for solder work
Lathe (for best results)
How the guns are built varies from person to person, region to region, varying mainly based on the experience level of the battler and the parts available to them. To give you an idea of the different construction techniques I'll refer you to two other sources of information on building your own guns:
I must point out I take no responsibility for the instruction provided as i didnt write them! And anything you do with them, you do at your own risk! so don't come crying to me when it goes wrong!Hope it helps
Author
Topic: Turret BB Guns Please help me!! (Read 7436 times)