.257 Shots fired, shots fired, all TAG units within…
the vicinity of Talonairgun.com please respond!
I already told you I was only shooting @ 30 yards so keep your smart ass comments to yourself, or not 🙂
At first I was puzzled by my air situation. I went to the firehouse and I was told by my buddy that he put 4500 psi in my big tank. When he started filling my Joe B. Guppy tank it started hissing at 4200 psi so we figured that was it due to safety valve (have to look into it to see if Joe puts those in his tanks anyone know? Please speak up). EDIT
Just left my guppy tank connected to my big tank for 20 minutes and it turns out that both gauges are working fine. My big tank only has 3900 psi in it???
Why would the firehouse gauge show that it had 4500 psi in it???? So now both CF tanks have 3900 psi in them. Could the firehouse gauges be old and in need of replacement? Perhaps.
One thing though is that when I fill the condor tank directly from the CF tank …when the CF tank says 3400 psi the condor tank gauge only shows 3000. What do you think Doug? Should I try a different gauge on the condor tank….
I tried to move past this first mystery to the next. I am shooting in my backyard 30 yard range (sighting in the SS scope) when I notice that this thing is very tame to my ears. Hell my 24″ .25 condor was much louder!!! I figure it is either lack of air flow or lack of hammer so I go retrieve the chrony from my shed and wouldn’t you know it I was only pushing the 70 grain Lymans at 800 fps. I didn’t realize (despite Doug’s instructions to set the hammer preload to around 2.1) that the preload was at “0” . Since I have no numbers on my frame I grabbed my .25 to compare the position of the screw to. Sent the first shot over the chrony and I knew by the loud bang (although not obnoxious by any means) that my fps had increased…now showing 1,050 (171fpe).
Getting late in the day, yard work to do, son wants to carve some faces into walking sticks, babies crying, dogs whimpering, sun blazing, time to wind things down for the day so I shot a seven shot group with the lyman’s. I shot four shots, then added some more air for the next three shots. Sent number seven from the off hand position and I must say that this gun is a dream to shoot. I expected it to have a more “violent” hammer kick but it does not! It is very smooth. Cocking is relatively effortless and so smooth. I can’t wait to put in some more trigger time but now I have to figure out this “air” situation so please add your “two cents” below, thanks.
p.s. I really enjoyed sighting in with (the first time ever) the Mil/Mil Swfa. First shot was two mils left and 3.5 mils high. Dial my windage 2 mils right and 3.5 mils down and kabowwwwwwwwwwwwww! Bulls eye! Think I’m gonna give this milliradian thing a shot, but for now I am still doping in yards not meters, lol.
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All Replies
OK, It is time for me to call BULLSHIT. I LOVE IT WHEN THAT HAPPENS!
Bennyboy: the Scott 66 cubic foot, 45 minute, 4500 psi carbon fiber, SCBA tanks use the same epoxie, either for US or European use. I called Scott up and asked. They said that they sell the same tank here and to Europe.
I have a Scott 66 cf tank.
I asked Scott; if the tanks are the same, why are the US tanks only good for 15 years but, the exact same tanks are good for 30 years in Europe? I got a little “well, Ah hmm” before they finally told me that US regs don’t allow for more than 15 years.
RC: kinda bullshit for you also.
I did the research on SCBA tanks before I bought my first PCP. A 4500 psi tank sounded like it could be very hazardous to be around! I also asked the local fire houses if I could get a tank filled there. The chief said that they would be happy to fill it, “It would be good for public relations”.
My research found only one 4500 psi SCBA tank failure. The volunteer fireman was returning from a training exercise and he put his depleted 66 cubic foot carbon fiber tank in the back of his pickup truck. He also had a container of “industrial paint solvent” in the bed that had opened/spilled. The solvent got on the SCBA tank during the trip back to the fire house.
At the fire house, the tank was refilled to 4500 and put in one of the fire trucks. 3 days later, the solvent finally dissolved the epoxie enough for the tank to release its pressure somewhat violently!
I blew the back half of the truck off and caused some structural damage to the fire house!
There were some pretty impressive pictures included in the DOT report!
The guy that filled the tank should have noticed that the tank had some “goo” on it and should have at least asked WTF it was. It turned out to be a combination of errors that caused the only SCBA tank failure, in the US at least.
I have a 44 cf tank that will be 15 years old in June, my 66 cf tank has a year left. I am going to have them both hydroed soon and I will then know that they are good for another 5 years.
I am going to order a Freedom 8 and a Great White 97 cf tank from Joe and I will fill all 3 tanks off of it.
Sometime in the next year or two, If I suddenly quit posting here: PLEASE call 911 and tell them that oldgoat has blown himself up! 😆
One of the political benefits of a shooting iron that uses compressed air, is that no militant rug head can blow up a marathon with compressed air.
Not that evil air does not result in its share of heartbreak. When I think about all the loving I have missed out on over the years as a result of my sick sense of humor it saddens me. 😥
Best technique I have found for boilermakers is to pretend I have launched a “throat bugger lougie” at the ceiling in the dark, as the misses ducks under the covers and finds the bouquet I have waiting there for her, she realizes she has been had once again, and that I will not be having any tonight. 😛
Regards,
Roachcreek
When they say it is cheap insurance and break down the cost per year of the new tank over a 15 year period, my answer is show me the failures with air gunners, show me the carnage, because if it happened we would all know about it in the span of a day.
Fact is, there has never been a failure of a SCBA with an air gunner.
If you fill with a Shoebox those tanks will last your lifetime.
15 years was a date put that they, the government pulled out of their asses.
You need to look at it in the realm of risk management.
Meaning, if you drive 2 hours a day going to and from work on the LA freeway, you can compute your chances of being in a fatal accident, by finding the number of vehicles on the road at that time, the number of fatal accidents over a specified period of time and doing the math.
So with SCBA tank failures you need to find out the number of air gunners using expired scba tanks, beyond that magic 15 year period and compute that number of air gunners using them, meaning us guys with Shoeboxes or other air compressors, with the failures of those tanks in the hands of air gunners.
First problem you run into is there have been no failures, zero, nada, has never ever happened with air gunners.
The only known failure reported has been with a fireman who exposed his tank to corrosive agents in his pickup bed and it exploded, and again he was not an air gunner filling an expired tank at home, he was a guy who knew better and endangered his fellow firemen by his carelessness.
With the Shoebox we fill very slowly and that means the stress of rapid fills and expansions does not happen, which further prolongs the life.
Scuba tanks are different, not only are they heavy and inefficient for air guns, they are fucking bombs. There are many many cases of failures, and when they do, they don’t just open up and expel their air and end up looking like a stepped on banana like the scba’s do, those things spray the area with deadly shrapnel.
You can argue with my logic all you want, but again, show me the carnage, not your free floating anxiety over something that has never happened.
Regards,
Roachcreek
X2. Usual heath and safety bullshit. Nanny state telling us the normal twaddle…These tanks have a test pressure of half as much again. We don’t fill them anywhere near their fail point.(Cue a post telling us how someones friend of a friend who knows a guy blew up himself and the neighbourhood with a non tested tank…..)
and if one is truly concerned with “prospective” failure…one can build a “safety cage” around the tank to ease “what if” concerns. Something strong yet manageable in weight.
I have been in this sky is falling scba failure thing with guys trying to justify spending hundreds on a new scba tank on the yellow, it has gotten to the point they don’t post about it there much anymore because of the grief I give them.
When they say it is cheap insurance and break down the cost per year of the new tank over a 15 year period, my answer is show me the failures with air gunners, show me the carnage, because if it happened we would all know about it in the span of a day.
Fact is, there has never been a failure of a SCBA with an air gunner.
If you fill with a Shoebox those tanks will last your lifetime.
15 years was a date put that they, the government pulled out of their asses.
You need to look at it in the realm of risk management.
Meaning, if you drive 2 hours a day going to and from work on the LA freeway, you can compute your chances of being in a fatal accident, by finding the number of vehicles on the road at that time, the number of fatal accidents over a specified period of time and doing the math.
So with SCBA tank failures you need to find out the number of air gunners using expired scba tanks, beyond that magic 15 year period and compute that number of air gunners using them, meaning us guys with Shoeboxes or other air compressors, with the failures of those tanks in the hands of air gunners.
First problem you run into is there have been no failures, zero, nada, has never ever happened with air gunners.
The only known failure reported has been with a fireman who exposed his tank to corrosive agents in his pickup bed and it exploded, and again he was not an air gunner filling an expired tank at home, he was a guy who knew better and endangered his fellow firemen by his carelessness.
With the Shoebox we fill very slowly and that means the stress of rapid fills and expansions does not happen, which further prolongs the life.
Scuba tanks are different, not only are they heavy and inefficient for air guns, they are fucking bombs. There are many many cases of failures, and when they do, they don’t just open up and expel their air and end up looking like a stepped on banana like the scba’s do, those things spray the area with deadly shrapnel.
You can argue with my logic all you want, but again, show me the carnage, not your free floating anxiety over something that has never happened.
Regards,
Roachcreek
Knife
Not the exact same tanks. The 30 years tanks have a diff epoxy.
OK, fine, Now where the Hell Is ours? 😕 We got all kinds of epoxy! 😀
I tracked down one supplier a year or two ago. A fellow from Georgia. I think the 45CF tanks were 700 bucks 😯 😯 😯
Knife
Not the exact same tanks. The 30 years tanks have a diff epoxy.
OK, fine, Now where the Hell Is ours? 😕 We got all kinds of epoxy! 😀
And more importantly like you said, when it fills, it fills a LOT slower so the SCBA tank NEVER get warm or even close to it. Its cold acutally so when it fills to 4600 or 4500 or 4800, that’s what’s actually IN YOUR TANK.
Amen to that! I used to hate getting home with 300 less PSI cause of a cool down!
Knife
Not the exact same tanks. The 30 years tanks have a diff epoxy.
I went thru this a long time ago with a shop. I called the hydro place and asked. Requires a special tool to remove a SCBA valve and there is a torque setting also.
Yup. No vis on CF tanks!
Sounds like a plan to me. 😉
Knife
Jerry,
It is worse yet wen I shoot thru the 8×12 inch window of my sound suppression box. The hose gets in a bind. That can’t be good for consistency.
The muzzle needs to be inside the box to contain the sound.
I have ordered another 30 inch hose and will put a hole in the bottom of the box so I can feed it in to the box from the bottom and allow enough room that it will not kink it.
Thanks for the advice.
RC
RC,
I see you have the air hose connected at an angle. Try connecting it so the hose hangs straight down and position the tanks so the hose is just pure dead weight straight down.
You’re groups are so small now that even the smallest refinements in technique may be noticeable to you. Changing the hose connection might remove some little bit of horizontal variance.
Yeah, I understoodl ya Tof, BUT, Damed you two use a LOT of air! 😯
Can’t wait to get started! 😆 Hit a little snag with the Bbl. Trying to figure it out. 😕
Knife
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Well, I have two years left on my 88 Scott. Guess I’ll pretend I’m a Brit, and add another 15 years to it at the end of its USA Life Cycle! 😆
WOO-HOO!!! Happy Days! 😀
Knife