700cc 300bar tanks
- Thread starter gmoua83
- Start date
Many of us have the 700cc bottles on our guns. Hard to say brand wise cuz you don't list it. Mine is an Alsafe.
You can use the old valve off of another bottle if you don't want to buy another.
FX recommends that you fill only to 250bar even though the tank has a max pressure of 300bar and some run their guns that high.
You can use the old valve off of another bottle if you don't want to buy another.
FX recommends that you fill only to 250bar even though the tank has a max pressure of 300bar and some run their guns that high.
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I put one on a MK3 .35cal mainly for the extra capacity, more shots per fill, but I still only fill it to 260bar or so. Not sure it's a good idea on a MK2 if you're thinking of filling it to 300bar. The MK3s have the extra reg right at the bottle so the gun internals are only subjected to whatever that reg is set for. Not so with the MK2s, they see full bottle pressure and FX rates the guns at 250bar max.
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People just want bigger and bigger bottle. Why not just put a 12L bottle on it and call it a day. You will get thousands of shots from a 12L. XD
For me, 580cc is maximum I would go.
For me, 580cc is maximum I would go.
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To be clear, the bottle will fit the Impact MK2 with an FX valve, any FX valve. However, only the new M3 valves are safe to go up to 300 bar. In addition, even with the new valve the Mk2 is NOT rated for 300 Bar. Maximum fill remains 250 regardless of the valve/bottle combination.
Chris
Chris
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Also, the mk1/2 valves do not fit mk3, the valve pin is too small and requires a top hat or it goes through the first reg hole.
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Anyone have a good source for CF bottles in the .4 to .6 L range that aren’t an arm and a leg?
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I got them on both my Crown MkII's, the hard part was getting the valves, forget trying to get valves from FX, they don't even no there own inventory and you'll wait months not weeks.
I easily fill mine to 300 and got the bottles fast from Amazon
Goldwing, I guess the real question here is if the gun is built to handle 300 bar, not the bottle. We know the bottle/valve combo will handle the 300 Bar fill without a problem. However, to the best of my knowledge, the single regulator FX guns like the Crown are only built to take 250 Bar.
No doubt you fill to 300 Bar and haven’t seen any problems…yet. However that’s a “N” of 1, and I wouldn’t want to do that unless there were hundreds or thousands of reports that it was safe, or if FX were to say so, and so far neither of those things are true.
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I’ll take that into consideration sir but the hell I’ll go back to pee wee bottles ever again 
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Why would you stress the orings and the Reg at the upper limit? I am tethering my MK2 @ 190 bars.
How much you spending for those small 5-6-700 cc CF tanks you can just get a decent large scba.
All four for $150 ?? My compressor is running ones a month.
How much you spending for those small 5-6-700 cc CF tanks you can just get a decent large scba.
All four for $150 ?? My compressor is running ones a month.
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Why would you stress the orings and the Reg at the upper limit? I am tethering my MK2 @ 190 bars.
How much you spending for those small 5-6-700 cc CF tanks you can just get a decent large scba.
All four for $150 ?? My compressor is running ones a month.
Your solution sounds like a bench only solution, keep in mind many people hike to their shooting spots or walk and stalk.
One setup doesn't work the same for all shooters.
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I got them on both my Crown MkII's, the hard part was getting the valves, forget trying to get valves from FX, they don't even no there own inventory and you'll wait months not weeks.
I easily fill mine to 300 and got the bottles fast from Amazon
Goldwing, I guess the real question here is if the gun is built to handle 300 bar, not the bottle. We know the bottle/valve combo will handle the 300 Bar fill without a problem. However, to the best of my knowledge, the single regulator FX guns like the Crown are only built to take 250 Bar.
No doubt you fill to 300 Bar and haven’t seen any problems…yet. However that’s a “N” of 1, and I wouldn’t want to do that unless there were hundreds or thousands of reports that it was safe, or if FX were to say so, and so far neither of those things are true.
Agreed - don’t want to be the case study for why people don’t try what you tried in the future... it is so much fun to level guns up this way but I had a loud surprise when doing something similar so be sure to be safe.
I upgraded my airforce guns to 4500 psi tanks and custom valves to match but I also had to upgrade the breech / bolt to a more durable design because one of my AF delrin breeches split with a bang at that pressure. This is in spite of many people having no issues with this combination. If you are determined to shoot it that pressure be sure to think it over and look over the air pathway and likely failure points and make sure there’s nothing that could end up in your eye if something fails. That breach failure on my Air Force gun didn’t hurt me in anyway and seemed about as dangerous as a firecracker since it was a small burst of air, but a firecracker in the wrong place can take out and eye or damage an ear.
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Better for what? No matter what size/volume of tank you use on a MK2 Impact you should not fill it over 250bar. Extra volume will give more shots per fill at whatever fill pressure limit you have. So you could dual up two 700cc bottles for even more, but you still can't fill them to 300bar on a MK2 Impact. Some indication you're getting that would be comforting.
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You just reminded me
today I walked around with my L2 and I was tinkering about it.From paintball years with my boys ... maybe for 2 decades this was sitting deep in a closet, I had to pull it out to see what mods I can do.
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