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Gas for gas blow backs

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Gas for gas blow backs

Post by Bones on August 2nd 2011, 23:43

Does anyone know of a gas that can be used in lower temperatures in gas blow back guns safely?
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Re: Gas for gas blow backs

Post by Twitch on August 3rd 2011, 00:14

Generally gas guns and magazines are only rated to certain PSI's. Most are rated to no more than 200 PSI.

Green Gas (Propane) vaporizes at only 34 PSI at 10 Degrees but at 70 Degrees it is at 110 PSI. And 177 PSI at 100 Degrees. That's why there is such a difference using it in the cold.

Red Gas (Freon22) (if the gun is rated for this) vaproizes at 45 PSI at 10 Degrees, at 70 Degrees it is at 185 PSI. And 290 PSI at 100 Degrees. This will destroy most gas magazines and guns which are not rated for it.

A very few products are capable of being upgraded to handle CO2, but CO2 operates at 800 PSI. CO2 would destroy a gas magazine, and likely injure the user. Unfortunately CO2 is also not efficient at cold temperatures.

Paintball has found the best solution for low temperatures is using HPA (Highly Pressurized Air). They hold this in tanks (like smaller versions of what firefighters wear) which are generally anywhere from 3,000 to 4,500 PSI. They use regulators to knock the gun pressure down to the range which will not cause a catastrophic failure in the gun. Again, not really doable for airsoft.

Your best bet for cold weather operation is getting an AEG with a LiPo battery. Even AEG's are effected by cold air if you have a NiMH battery, as they quickly drain in the cold. LiPo's seem less vulnerable to the cold.

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Re: Gas for gas blow backs

Post by Bones on August 3rd 2011, 07:29

ok thanks. looks like i'll get a Lipo for my other guns today then.
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Re: Gas for gas blow backs

Post by Twitch on August 3rd 2011, 09:09

nightstalker102 wrote:ok thanks. looks like i'll get a Lipo for my other guns today then.

Look into hobbypartz.com and their Blue Lipo's. Several guys use these and they are the cheapest out there.

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Re: Gas for gas blow backs

Post by Bones on August 3rd 2011, 20:18

i will defanitly look into that website. right now i have one on the way from ASGI.
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Re: Gas for gas blow backs

Post by treskie on May 25th 2012, 00:24

propylene it is a litttle stronger than propane so you can use it when it is colder outside( And is not like CO2). they do sell canisters that accept the propane adapaters that merchants sell. I was looking into it when i moved from florida to colorado. I saw people using it in FL for some extra power. SO it does work in normal temps just be weary. Someone did a report on it, on an airsoft forum. The cans that I saw ran at $10 a bottle, and they were reported to do about 1000-2000 rounds on a GBBR. look into it do your homework.



on a side note you ever see HPA systems? if your using this for a pistol hooking this up to a mag kinda looks like a lanyard if you get the right looking HP hose. Another side note off of that I have seen some people hook a HPA system up to multiple tanks. which if you ran that in the opposite way thats multiple mags.

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