Fill Pressure Control Unit…..
One of the problems I have is no regulator on my rifle. I have found there is a range of upper and lower psi that my pcp performs best within, and shots within that psi “zone of accuracy” have the least psi deviation between shots. The less deviation in pellet weight, and air pressure per shot, equals tight groups and clean kills.
Pellets can be weighed precisely. No problem there. Quality pellets don’t need to be weighed. They are what they say they are. (JSB, Edgun pellets, etc)
So, to avoid wasting air, and fill precisely to the max pressure in my personal “zone of accuracy”, I am unable to find a means to fill my rifle slowly…and I mean very slowly, and have the capability to shut it off within a pound or two of my known maximum pressure for an accurate first shot.
I have spoken to Jim Gaska about this, questioning what could be an affordable solution to those of us who know what pressures we need to stay within, but are unable to achieve this with OEM fill equipment and button gauges.
I’m calling it a “Fill Pressure Control Unit” for lack of a better name. Jim said he had some ideas and would get back to me with a workable solution. It shouldn’t be brain science, or rocket surgery, just a means to dial fill rate pressures up or down with precision, and a gauge that that would give an accurate reading (+/- 1 psi) than the tiny gauges on existing equipment.
With a sixty mile round trip to get a 3450 psi tank fill, I don’t want to lose two to three hundred psi every time I fill, plus waste those early pellets flying all over the place. A regulated gun will give fifty to 70 shots per fill, depending on FPS/FPE desired. I’m lucky to get thirty full power shots per fill, so I fill a lot in an afternoon’s shooting, and I often have to bleed a hundred, usually more, lbs of psi off. My scuba valve sometimes decides to blast air in so fast my rifle cylinder get hot. Ok….sometimes I just crack it a bit too much…it just happens (too often).
I want to simply open that scuba valve, and then precisely control how fast and how much air I place in my rifle cylinder.
So, stay tuned pneumatonauts…and perhaps, unlike my last massage visit, I’ll come up with a happy ending, instead of empty promises, for my hard earned dollars.
Pictures and details will be posted after this “device” arrives. Cost is unknown at this time. But if he can bring it in at $30 to $50, it will eventually pay for itself. And….I might even begin to hit those damn geese in the head instead of the butt.
Regards,
Kindly ‘Ol Uncle H 😯 😯 T
PS: Yeah yeah…I know, some of you already do this with your personally designed gear, but I’m not you, nor are a lot of others. We need something that plugs in and works every time! And until my R3 arrives, I’ve got to tough it out with my AA S510!
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Dearest Uncle Hoop, You can make this fill hose setup for under $100.00.
Tank not included, just nipple this into your yoke and you will have unbelievable control over your fill rate. All from McMaster Carr.
My dear Your Goatshlp:
In response to your PM…..NO! I absolutely refuse to get into bed with a grown man and a sheep! I don’t care how common it is in Lincoln, Illinois, or your personal definition of “Animal Husbandry” !
Actually, I never got a PM from you. Try again, but use MY forum name.
As for your suggestions….why is all that stuff underlined? I wrote each one down, put them together in a paragraph, and they still don’t make sense.
Sometimes I get very confused by all this technical talk!
I’m going to take my meds, and go back to bed. I’ve been very confused lately.
Regards,
H 😯 😯 T
Hey HOOT, I am not sure what you are wanting but, this might work for you.
Mount a cross on the output side of the line valve:
Add a bleed valve;
And a good quality gauge;
http://www.mcmaster.com/#atmospheric-pressure-gauges/=gfvykl
That gauge has a tolerance of 1.5% so it will read +- 45 psi at 3000 psi. If you want a tighter tolerance gauge, McMaster Carr has them also, just be prepared to spend some extra cash for them.
If you want a more accurate gauge, you want one that goes to 6,000 psi. A gauge is the most accurate when it is in the center of its range.
I sent you a PM a couple of days ago, how about a reply. 😆
I left my camera at work, will post a pic tomorrow. The valve I use are good for 10,000 psi and I use a cross fitting with 2 valves, a gauge and the fill hose. I fill my tank to 2216 psi every time.
“dah”…………………”dah”??????
Do you mean “DOH!”, as in Homer Simpson?
As I told you before, I don’t have a pilot’s license, and don’t use a pilot’s valve! I don’t see the connection to the situation at hand.
As for your camera at work, I doubt anyone here wants to see photos of your work environment, as we tend to specialize solely in air gun stuff.
The dual valve device you have described, sounds like a valve too far. Do you have to use an “H” fitting to attach both these valves to the tank?
Further, I can’t fill my steel tank to 10,000 psi, and can’t imagine where you get yours filled that high! Is yours carbon fiber? You confuse me when you say you only fill your tank to 2216 psi, and that begs the question as to what happens to the remaining 7784 psi?
As regards the “…cross fitting”, I personally tend not to mix religion and pneumatics…I just don’t think it’s a good idea.
I think you mean well, but I honestly doubt that your religious 10,000 psi device is useful for a low pressure tank in the 2216 psi range.
Be cautioned that consistent exposure to high pressure air in the six to eight BAR range, can cause brain damage resulting in serious personalilty disorders which can result in a young man becoming a “Pneumatic”, and this affects your ability to reproduce your species.
Best wait to see what the professionals can arrive at to resolve this problem I face.
Meanwhile, Andy, I suggest you inhale only low pressure air, 1 BAR, no more, no less. Let’s see if we can get those eyeballs both looking in the same direction! Once that’s corrected, I believe you’ll find there’s really only one valve in your system. Probably correct those unusual psi readings you’re reporting!
Sincerest regards,
Uncle H 😯 😯 T
Have you tried a pilot valve? dah
I left my camera at work, will post a pic tomorrow. The valve I use are good for 10,000 psi and I use a cross fitting with 2 valves, a gauge and the fill hose. I fill my tank to 2216 psi every time.
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actually unca’hoot, i recommend upping the meds
(especially the saltpeter, considering all the boners you been pullin’…)