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Green Gas And Propane?


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#41 jonsun81

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Posted 22 July 2012 - 10:29 AM

Maybe using propane in extremely hot weather is the culprit, being that its more compustable and hits harder when its hot?  just going off an earlier post about boiling points.  just like how co2 would destroy guns that werent steeled out.

#42 aaps59

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Posted 22 July 2012 - 10:31 AM

View Postjonsun81, on 22 July 2012 - 10:29 AM, said:

Maybe using propane in extremely hot weather is the culprit, being that its more compustable and hits harder when its hot?  just going off an earlier post about boiling points.  just like how co2 would destroy guns that werent steeled out.
Propane does provide more pressure than green gas does, but the combustibility doesn't make a difference

#43 jonsun81

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Posted 22 July 2012 - 12:07 PM

What I'm trying to get at is if you use propane in 90+ degree weather, will the fps be higher than if you were to use green gas?  I am a new comer to the gas world so if this all seems like common sense I apologize, I'm just trying to figure out why propane hurts guns more than gg even though they seem to be the same.

Is it also plausible that there are just more propane users, explains the more problems?  Places I play at I see and smell more propane than gg when people are using gbb.

#44 aaps59

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Posted 22 July 2012 - 07:34 PM

View Postjonsun81, on 22 July 2012 - 12:07 PM, said:

What I'm trying to get at is if you use propane in 90+ degree weather, will the fps be higher than if you were to use green gas?  I am a new comer to the gas world so if this all seems like common sense I apologize, I'm just trying to figure out why propane hurts guns more than gg even though they seem to be the same.

Is it also plausible that there are just more propane users, explains the more problems?  Places I play at I see and smell more propane than gg when people are using gbb.
THere is no need to apologize. A forum is a place to learn and share knowledge.
Besides from the extra pressure propane provides, the additives propane has that create its odor can cause damage to internals in KWA GBBs. Specifically different rubbers inside the gun.

#45 Jakeedaman21

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Posted 22 July 2012 - 08:51 PM

Has anyone else noticed that on the back of the KWA brand Green Gas, the warning states "Burning propane can make carbon monoxide".

If it isn't propane, then why are they required to have a propane warning on the back... hmmmmm

#46 Nitemare

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Posted 26 July 2012 - 09:19 PM

Jakeed, from what I believe, the chemical compound make-up of propane and green gas is the same (it's propane). The only difference that I'm aware of is the dirtiness of fuel propane compared to green gas, and the odor additives used.

I've used propane in 105 degree weather without an issue. God only knows how hard the LM4 was shooting though (probably not very safe).

Edited by Nitemare, 26 July 2012 - 09:19 PM.


#47 Jatodude

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Posted 26 July 2012 - 09:23 PM

View PostNitemare, on 26 July 2012 - 09:19 PM, said:

Jakeed, from what I believe, the chemical compound make-up of propane and green gas is the same (it's propane). The only difference that I'm aware of is the dirtiness of fuel propane compared to green gas, and the odor additives used.

I've used propane in 105 degree weather without an issue. God only knows how hard the LM4 was shooting though (probably not very safe).
How is propane dirty? I'm sure that's a myth. The difference is the scent additives which can vary based on the propane manufacturer, and green gas is lubed and has a more pleasant scent additive. C3H8 is C3H8, it doesn't matter which bottle it comes from.

#48 jonsun81

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Posted 26 July 2012 - 09:30 PM

I think he means the gunk propane leaves behind, you definiteky need to clean your gun more often if running propane is what ive read.

#49 Jatodude

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Posted 26 July 2012 - 09:41 PM

View Postjonsun81, on 26 July 2012 - 09:30 PM, said:

I think he means the gunk propane leaves behind, you definiteky need to clean your gun more often if running propane is what ive read.
From experience, at 6,000 rounds give or take a few hundred, the only thing I can see after cleaning my gun is a black powder type residue that's presumably the paint on the parts.  Where I see it the most is in the charging handle, or other high wear areas where a good amount of the original finish has been stripped.

#50 Nitemare

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Posted 28 July 2012 - 12:38 PM

View PostJatodude, on 26 July 2012 - 09:41 PM, said:

From experience, at 6,000 rounds give or take a few hundred, the only thing I can see after cleaning my gun is a black powder type residue that's presumably the paint on the parts.  Where I see it the most is in the charging handle, or other high wear areas where a good amount of the original finish has been stripped.

I don't believe that black residue is from paint. I'm fairly sure that is from the propane which is why it is dirtier than green gas.

#51 niko_gpsy

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Posted 28 July 2012 - 01:24 PM

The odor additive ethyl mercaptan found in commercial propane does leave a gunk type residue in GBB guns. The compound is something that is normally burned off when used as intended like in gas burners. But in GBB guns this stuff can build up. And since this is a intermediary compound used in manufacture of large variety of plastics it can over time break down plastic materials if left for long period of time.
So the gas itself is ordorless and not "dirty" but the compound they add to identify in case of gas leaks can leave gunk in your guns.

#52 gregoryv022

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Posted 01 August 2012 - 03:31 PM

To throw a 3rd party into the mix. CO2... what are the pros and cons of running these through an LM4. I know CO2 has a higher critical pressure that propane which is why CO2 pistols are such hard hitting weapons. If kept properly lubricated, would CO2 make a viable alternative when used with say S-Thunder Adapters???

http://www.airsoftgi...roducts_id=7949

http://www.airsoftgi...roducts_id=7947

Edited by gregoryv022, 01 August 2012 - 03:31 PM.


#53 R_King91303

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Posted 01 August 2012 - 04:28 PM

I think generally speaking CO2 isn't in the mix because the cons out weigh the pros?

Con's: Higher PSI leading to early parts failure, lack of self lubrication (requires manual lubrication of parts), roughly same per use cost of Green Gas, and not novice friendly.
Pro's: Cleaner than propane / GG, more readily available than GG, and increased FPS.

If KWA made the PSI tolerances of their guns / mags public knowledge (I doubt this would happen), and the PSI regulator could meet those tolerances then I think we could talk about a CO2 alternative...


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#54 gregoryv022

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Posted 01 August 2012 - 05:30 PM

Im curious to try it, but not in any of the Gas guns that i currently own as i know that they wont handle it. I have a KWA USP and a TM 5-7. i don't trust pistols to hold up to the PSI increase. What parts in the LM4 would be subject to the increased PSI of CO2 besides the Magazines. But ya, the PSI tolerances would be nice to know.

Another pro i thought of for CO2 is that it is much less susceptible to change in ambient temperature. Also CO2 is cheap.

If someone would like to do some experimenting, feel free.

#55 jonsun81

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Posted 06 August 2012 - 11:22 PM

Not it, my gun runs fine on propane and i enjoy cleaning it after skirmishes and reflecting on the days kills :-)

#56 thewolf

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Posted 19 August 2012 - 07:36 PM

View Postjonsun81, on 06 August 2012 - 11:22 PM, said:

Not it, my gun runs fine on propane and i enjoy cleaning it after skirmishes and reflecting on the days kills :-)
question tho: how long have youve had you LM4 and using it with propane? did you use propane from the start or wear it in with green gas first? do you alternate from propane to green gas and back to propane? or just the use of  propane only?

Me personally from my 2 cents. because propane stinks, you have to add spry,and gives it more power. it only concludes to a stinky gun,more cleaning,and hella more wear and tear! and a primamry aeg should be consider with gbbr's just in case something goes wrong with your LM4. we spend to much money on these LM4 for them to be breaking down so i would consider a stock poly m4 or whatever weapon you choose so to keep the game going! for the most part i know i bought my LM4 personally for field use only! does get used for cqb but mainly to kill those damn WE scars that everyone is boosting to 400 fps+. not to mention kwa did a great job on the innovation department of a reliable M4!!

so green gas only for me! clean weapon is a happy weapon:)

Edited by thewolf, 19 August 2012 - 07:42 PM.


#57 Raptor72

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Posted 20 August 2012 - 05:54 AM

I now have over 20,000 rounds through my gun.....ALL PROPANE.  Works like champ.

Edited by Raptor72, 20 August 2012 - 05:55 AM.


#58 jonsun81

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Posted 22 August 2012 - 03:52 PM

Had it for 2 months now, propane from the start and only propane.  Played cqb and field, hot and mild temps all running propane.  Hop up has never gotten lube in them and has held up beautifully and nothing's catching or looking extra worn down.  I clean thoroughly after skirmishes and lube lightly before and after games.  I'm at over 5,000 rounds, semi and full auto no problems.  If you want to use gg that's fine with me, just know my propane usage hasn't ruined anything.  

Honestly, my only gripe with propane is the smell....but I'm not paying quadruple for less gas just cause of the smell.  Sports authority sells a two pack of propane for 4-6 bucks, you can't beat that specially if you use a lot of mags.

#59 darkbluedean

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Posted 29 August 2012 - 03:12 PM

How often do you put silicone oil? Before every fill?  Every 3 mag fills?

#60 AzizaVFR

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Posted 19 September 2012 - 09:56 AM

Does anyone know the internal volumetric capacity of the magazine for the gas?  Personally, I do not like buying all of the disposal cans of propane or green gas.  It seems like a waste. While looking at both my gas grill and camp stove, a candlelight of an idea lit in the distance.  Grabbing the adapter hose from the camp stove, threaded on the Madbull adapter, and attached the hose to the spare 2.5 gallon propane tank. It was turned upside down with the valve at the bottom, and filled the magazine successfully.  The other benefit is the magazine can be filled any position.

The hose can be sourced from Lowes or any similar hardware store:  http://www.lowes.com...278&Ntt=PropaneThe question is how many refills will a 2.5gallon propane tank provide?  The current price to fill the tank is $8.




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