Tims
New member
I was thinking about PCP airguns. I had just installed a new Carbon Fiber tank and upgraded valve on my Airforce Texan. I now had my original tank and valve to use for a project! What I noticed about the Airforce system is its efficiency and simplicity is fantastic! So where does the power washer come in you ask? The short answer is that I like the simplicity and efficiency concept and the power washer offered cheap, simple, and fairly efficient means to deliver air to a barrel of my choosing. Hydraulic hoses make for decent durable pathways for air and they are fairly inexpensive. power washer valves are suitable for controlling plenum loading and they are rated at 300 bar or higher and they are cheap. So what happened to the Texan tank and valve? Didn't need it. The pressure washer gun valve and trigger are already to go. The input hose to the pressure washer gun(PWG) serves as the plenum. The discharge hose from the PWG output side delivers the plenum air to the barrel when the trigger is pulled. At this point I am loading via a hollow through bolt that screws into the barrels breech plug. barrel is a 26.5"CVA Firebolt Ultramag,.51 Cal, 1:28 twist, inline black powder barrel. Not my first choice because of the slow twist rate; it was cheap and I am cheap and this is a cheap project (if ya know ya know!) I machined an adapter to carry the fill nipple, pressure gauge and Plenum charging valve that attaches to a .38L tank that holds apt 2-3 full power shots at 3200psi. I tether to a regulated tank to keep the gun filled to 3200psi(regulated sort of). Today I embarked on a mission to increase airflow by removing restrictions where possible. As of this writing I have discovered that the swivel hydraulic fittings are very restrictive, the JIC fittings are very restrictive, the PWG fittings are very restrictive, The quick connect fitting on the through bolt is horribly restrictive, etc...... That said; This Air Rifle already worked well. Can't wait to correct these restrictions and see the improvements(I Hope!)
