For your amusment
And this guy is supposed to know what he’s talking about!!
http://www.airarmsownersclub.com/viewtopic.php?f=2&t=33290&p=367647#p367647
All Replies
I thought the same Jerry, that gun had been eaten by an O2 monster!!
That Rayman is also saying that the Barnes rifles use ‘normal’ pressures, just a lot more air. Now I know they use a lot more air, but the pressures are higher, no?
Anyhow, I’ve stopped posting on the thread. He has his Fanboys with him now. That Stu guy started off saying yes dieseling was possible, but soon changed his tune to definately not possible 🙄
Unfortunately I can’t really let rip otherwise I would be banned, and that site is a good source of contacts for my AA S400 so I want to stay.
Though they are a bunch of Nanny State pussies, makes me wanna puke.
Pabs,
I see the thread has not yet been locked… I wonder if Raygun has ever filled a paintball tank. I have my compressor hooked up to a large storage tank and when filling tanks for the kids, I don’t even need to turn on the compressor as the storage tank has plenty of capacity to fill several paitball tanks without needing additional charging. Even when filling those tanks off the storage tank (which is at room temperature), the paintball tanks get warm. I try to fill slowly but the tanks still get warm. Somehow, air that is expanding from one tank into two tanks is creating heat! That can only be explained by the air already in the paintball tanks being compressed. I suppose someone can claim there is some friction induced heat from flow but I don’t buy it. When I vent the hose the fitting at the end of the hose doesn’t get hot…
I suppose some folks can’t be told anything without a visual demonstration but they ought to look around and see comparable phenomenon.
I saw on the thread that a couple pictures were posted of a claimed PCP dieseling/detonation/explosion. The claim is that no O2 was involved but I’m skeptical. That gun looks burned and even if it was full of flammable liquid, there is little room inside a breach to hold all the air required to sustain a burn. While I’ve seen a PCP diesel, I still don’t buy the exploding gun…
Even though I’m being very polite(yes me!) I suspect I will be banned or the posts deleted and or thread locked….. 🙄
I used wd 40 back then, then i went onto browning spray
well I can go test it out with my 150fpe Vulture 🙂
so 3in1 oil seems to be the common fuel for two instances.
how about yours furyan? what fuel did you have in there?
Damm what a twat raygun is , i too had a 28ftlbs falcon fac diesel on me more than once i nearly join that forum just to give him hell then probally get banned in a split second or busted by ray with his super raygun 😆 ,
but he must know what hes talking about having 50 years experience
🙄 , hes probally only owns spud guns 😀
give the fucknuts what for pab
Go ahead Pab. I’m certain you’re not mad!
Of course this might open up the whole drop of oil leads to violent explosion myth again! 😆
dieseling contained is an explosion
so might not be a myth
Go ahead Pab. I’m certain you’re not mad!
Of course this might open up the whole drop of oil leads to violent explosion myth again! 😆
cool, gonna have to try it out!
I know a springer with Carmex is interesting 🙂
Jerry, would you mind me quoting you for another forum where they seem to think pcp dieseling is impossible. Would be nice to mention another example.
Oh, I was shooting enough that the barrel shroud had condensation on it from being cooled. The dieseling was just a few shots after a quick barrel clean.
Nice to know I’m not going mad Jerry 😆
I’ve had a PCP diesel also. I just ran an oily (wet) patch through the barrel of my Barnes Prairie 3 and it dieseled for a few shots. Nothing violent or even very noisy but when opening the bolt for the next shot some smoke curled out. The oil was 3 in 1 and the slugs were lubed with it too.
Oh, I was shooting enough that the barrel shroud had condensation on it from being cooled. The dieseling was just a few shots after a quick barrel clean.
Then I’d like to know what the big bang and stink was? 😕 Sure as hell wasn’t my imagination. Certainly wasn’t an o ring letting go as that was my first check. Maybe the Jerry slug got caught up, enough to create enough compression and heat to diesel. I know some of them needed a coin to force them into the barrel.
well I am of a mind to try and make it happen.
as pressure drops all the way through the airways in a PCP there never will be anything but cooling.
now mind you slamming that 3,000psi into the back of a fueled pellet might indeed do the trick.
mmmmmm 🙂
Walter….
Pabs, I read pretty much everything here and this is the first reference to a PCP dieseling that I recall. sorry
- You must be logged in to reply to this topic.
Pabs…arguing with assholes just makes you one too…not worth your time IMO.
Jerry, I proposed the same re: compression heating an another forum…ended up heading for one of those “internet arguments” as well. 😆 Not worth the effort trying to convince people who already have their mind made up.
I could be wrong…always possible…but I’m thinking that compression heating may help explain why heavier slugs result in an increase in the fpe from a given power plant.
Hell…if I’m proven wrong…I’m still learning something from it aren’t I? 😉
Next ag build will prove…or disprove…I hope.
Thinking out loud….
Diesel compression temps as I recall, are in the 1200F range, and that’s with ~22:1 compression ratio. Dead space volume … especially in the AF design is fairly substantial, but the amount of pressurized air delivered by the valve to maintain a high percentage of initial pressure with the pellet near the muzzle, is going to be VERY substantial….have no data to determine barrel pressure at the muzzle at this time, but the fellow who wrote ggdt (gas gun design tool) did model an AF rifle…going to have a look see.
Be interesting to determine the effective compression ratio, and attendant temperature rise of the gases, and see how that affects the potential velocity of the gas (air) as well.
Al