B.A.S.T.A.R.D.
Posted: Sat Dec 06, 2008 2:57 am
Button-Activated Slug Thrower/Advanced Re-Design
I recycled a few things from my SpudRifle BV gun. The Barrel, BV, and a few fittings and brass nipples. I also used the push-button valve from my little spare-parts mini-pneu.
The tank, most of the brass, and the 1/2" aluminum QEV are new.
It's a pretty basic QEV muzzle loader, with an added BV on the barrel to serve as a safety. The tank is 2" PVC, and the pipe and fitting are all sch80 NSF-PW, except for the 1"x1/2"NPT bushing, which is NSF-81, whatever the heck that means.
THE BELL REDUCER IS SCH80 NSF-PW AS WELL.
The push-button valve is fitted for 1/8"NPT, and is rated for 300psi, or about 20.6 bar. The fill is from a Schrader valve on the right side of the T on the back of the QEV. I'm going to be adding one more safety feature when I get it in the mail, a small valve to isolate the Schrader valve, so it can't pilot the QEV while attaching or detaching. I also plan on adding an external bolt by the simple expedient of sliding a 1/2" repair coupling over a slot cut in the barrel.
Also, several other barrels will be added, including a .50cal blowgun for darts and paintballs, and a 10'x1/2" barrel for a try at blowing through a 2x4.
Putting this thing together was an education. After I finished assembly, I pressure tested it, and it was leaking like a sieve. Submersion showed huge leaks at ever joint! So, I had to completely disassemble it and re-wrap the teflon on every joint. What a PITA.
Anyway, pics now, damage vids tomorrow night.
The B.A.S.T.A.R.D., my new 260psi floor pump, and my little buddy Rover.
The push-button trigger, fill, and BV safety. With the BV closed, the QEV can pilot, and the piston will slap back, but nothing, nada, will flow down the barrel. I'll be adding a spring in the QEV to reset the piston if it pilots with the safety on. The black between the T and the tank is electric tape. The pipe there got some sharp edges from the pipe wrench, so I wrapped it.
I recycled a few things from my SpudRifle BV gun. The Barrel, BV, and a few fittings and brass nipples. I also used the push-button valve from my little spare-parts mini-pneu.
The tank, most of the brass, and the 1/2" aluminum QEV are new.
It's a pretty basic QEV muzzle loader, with an added BV on the barrel to serve as a safety. The tank is 2" PVC, and the pipe and fitting are all sch80 NSF-PW, except for the 1"x1/2"NPT bushing, which is NSF-81, whatever the heck that means.
THE BELL REDUCER IS SCH80 NSF-PW AS WELL.
The push-button valve is fitted for 1/8"NPT, and is rated for 300psi, or about 20.6 bar. The fill is from a Schrader valve on the right side of the T on the back of the QEV. I'm going to be adding one more safety feature when I get it in the mail, a small valve to isolate the Schrader valve, so it can't pilot the QEV while attaching or detaching. I also plan on adding an external bolt by the simple expedient of sliding a 1/2" repair coupling over a slot cut in the barrel.
Also, several other barrels will be added, including a .50cal blowgun for darts and paintballs, and a 10'x1/2" barrel for a try at blowing through a 2x4.
Putting this thing together was an education. After I finished assembly, I pressure tested it, and it was leaking like a sieve. Submersion showed huge leaks at ever joint! So, I had to completely disassemble it and re-wrap the teflon on every joint. What a PITA.
Anyway, pics now, damage vids tomorrow night.
The B.A.S.T.A.R.D., my new 260psi floor pump, and my little buddy Rover.
The push-button trigger, fill, and BV safety. With the BV closed, the QEV can pilot, and the piston will slap back, but nothing, nada, will flow down the barrel. I'll be adding a spring in the QEV to reset the piston if it pilots with the safety on. The black between the T and the tank is electric tape. The pipe there got some sharp edges from the pipe wrench, so I wrapped it.