I would highly suggest the valve because how else are you going to degas? You can dry fire a few times but not that many times.
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Ebay carbon bottles!
- Thread starter ChuckHunter
- Start date
I would highly suggest the valve because how else are you going to degas? You can dry fire a few times but not that many times.
I have had some China Ebay bottles, so far never a problem. They are heavier than FX bottles, or Talon Tunes, so not what I would call really lightweight.
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Talon Tunes bottles are only rated to 250 BAR. Most shooters now are looking for bottles that can handle 300-310 BAR. That's a 726-871 PSI difference from what the TT bottles are rated at. I own one of the 480cc TT bottles. I paid almost $200 for it. Then I bought a .5L CF bottle on eBay that can handle 4500psi. I've never looked back! You can see and feel the difference in the bottles. The eBay bottle is better IMO. The TT bottle just sits on my shelf in the garage. But 871 PSI equates to 15 more shots per fill on a high powered air rifle. If your valve assembly and regulator can handle 4500 psi of bottle pressure, then get the eBay bottle. Not to mention the eBay bottle cost me $109, shipping included.
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Maybe I will just buy the larger tank and use the valve from my compact tank. Unless I can find the bottle valve for sale.
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Here is my way of thinking... If the bottle does burst (probably unlikely but anything is possible) and someone gets hurt, the lawyers are going to come knocking. With an American bought DOT bottle you can pass the buck onto the manufacturer/company you bought the bottle from. If you buy some no name generic bottle off Ebay the buck stops with you.
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This is my way of thinking - the CE certification is no less valid than a DOT certification, unless you want to have it filled. Who the heck is bringing an air gun to a dive shop to ask them to fill it. Sorry - but I would kinda laugh if I worked there and you did, seriously drive all the way to a dive shop for one airgun fill? I just don't see the point.
Take a look at all of our airguns with cylinder air tubes. There is no certification required for an air tube under a certain diameter, but does anyone ever question if they will burst? And an air tube is more likely to burst than a CF bottle. A CF bottle will more likely begin to leak air through the seams in the CF than blow up in your face.
Some people have way too much time on their hands to worry about problems that don't exist. Oh wait - that's how most of our laws come about.
Take a look at all of our airguns with cylinder air tubes. There is no certification required for an air tube under a certain diameter, but does anyone ever question if they will burst? And an air tube is more likely to burst than a CF bottle. A CF bottle will more likely begin to leak air through the seams in the CF than blow up in your face.
Some people have way too much time on their hands to worry about problems that don't exist. Oh wait - that's how most of our laws come about.
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My last eBay bottle purchase was a dud. The neck was not centred and the threads were damaged. I couldn’t screw it on as it was hitting the barrel. That’s the last time I buy one from eBay or aliexpress. Same bottles , same source , just never know what you’re going to get.
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I didn’t return it, as it took almost 1 1/2 months to get here and I would have had to pay the shipping back. I’m using it to fill my PP750 when in the field . At least I’m getting some use from it, I haven’t done the calculations but I think I’m good for about 5 fills from 150 to 250 bar . At sub 500 fps , that’s a load of shots .
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Something to consider when swapping out tanks for higher fill pressures above what is scripted on the pcp is, the internal pressures added on to the internals of the gun. A gun spec’d at 250 bar fill has internals that shouldn’t exceed that, such as regulators, valve stems, valve seats, etc. Perfect example are some of the problems were reading on the Avenger and the poppet failures. If any of you have taken a gun apart that you had a hunch had been over pressurized most of its life, take a look at the o rings inside. A recent wildcat I worked on was so obvious it was over pressurized past it’s 230 bar spec that I could not get the regulator to seal, even with fresh o rings. Upon close inspection it appeared that the spacer after the regulator had formed itself out of square on one edge. Every o ring inside the air tube had a flattened and tilted to one side look, and all had to be swapped out for new.
Sometimes more isn’t always better.
Sometimes more isn’t always better.
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If your gun is rated at 250 bar and your reg is set say at 135 bar, you do not have to use its max pressure. I never use more than a 235 bar fill. Why stress the gun for the very few shot difference per fill? It makes no sense.
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One more point. I believe all CF bottles are extruded aluminum wrapped in CF for strength and stiffness. The CF prevents the swelling aluminum tanks experience. It is that swelling that fatigues the aluminum to failure. Jus sayin!
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I see everyone is in a tizz about taking a small gun bottle to a diveshop for filling. That is not what I meant! I have several 10liter dive bottles that I have filled at the diveshop and then fill my gun bottles from there. Is that not how everybody does it?
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No one gets in a tizz when I take my whole airgun, with it's small bottle, five minutes away to the paintball shop to have it filled. Sometimes they don't even charge me. What they never do is act like it's weird or funny.
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Think FX sells them for 70 bucks? Just call them.
Here is a stainless version from UK, slightly heavier but looks very heavy duty and good quality overall. I have one of their bottles with valve, only complaint is heavy.
https://www.bestfittings.co.uk/shop/fill-probes-adaptors/buddy-bottles-valves/fx-buddy-bottle-valve-to-fit-220cc-300cc-500cc-carbon-and-400cc-500cc-alloy-buddy-bottles-m18-x-1-5-thread/
Having owned an after market bottle it seems to me the extra weight and hassle isn't worth the trouble AND savings aren't really that great. I would just get the best deal on a FX bottle and shoot with confidence. Biggest reason I got my BF bottle is because it's a skinnier bottle compared to the FX bottle so it can fit the fatter shroud on the Compact V1, sadly the extra weight in the front totally threw off the balance and I took it off after just couple of mags.
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