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#1 User is offline   bigsal39 

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Posted 22 April 2010 - 04:31 AM

i have seen alot of 98c's with an expansion chamber, so what do they do? what 98c's can you use it in? is it worth the money?

in other words i want to know all about them.
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#2 User is offline   Dark Shadow Hunter 

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Posted 22 April 2010 - 05:54 AM

Basically it is a chamber to allow for the expansion of liquid CO2 into gas. They are supposed to help with efficiency and shot to shot consistency. However they really do not do a whole lot to help. If you plan on running nothing but CO2 I actually recommend a Palmer's Stabilizer. With the 98 series I suggest the female stabilizer, unless you run a custom set up and want something differant.
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#3 User is offline   slinkyaroo 

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Posted 22 April 2010 - 05:56 AM

An expansion chamber is a chamber that has a baffle system in it to help break up liquid CO2. This allows it to expand to a gaseous state easier.

It's only marginally better however it's not worth the money. Since you are replacing the front grip with the expansion chamber it gets cold on the hand to hold the marker.

It's better to put the money into HPA or buy a palmer stab. Even a cheap reg like the WGP ergo will out preform an expansion chamber.


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#4 Guest_Lt.Vortex_*

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Posted 22 April 2010 - 06:50 AM

I highly recommend an expansion chamber if you run Co2. I shoot an A5 with one and with a standard tank, I get usually 5to 8 shots with the air in my gun only. But with the expansion chamber, I usually get 15 -25 shots with the gun only. They are best used for high bps (balls per second) in keeping your gun from freezing. My dad has one on his 98c with a 20oz and it has been ran through some high ball rates and it never hinted in dropping fps or or freezing. Again I highly recommend one, Is not an upgrade per say but its a good gun improvement that will preserve your marker in the long run. In case you decide to run with more upgrades like a cyclone feed, this will help with your air supply. The 98c's are a bit of a picky gun in air supply and volume when you add on upgrade parts.Hear is a pic of my dads marker with an expansion chamber by Sub-Zero. Hear also is a site that sells the chamberhttp://www.bulldogpaintball.com/subzero.html. The chamber will lower your fps a little bit just because you aren't shooting strait from your tank anymore. But that isn't hard to fix.After you adjust your fps, it will help in your shooting consistency. the WGP egro is about the same price a the chamber, and it dose the same thing. Now changing over to HPA is a whole different topic, but I would be glad to assist in the discussion. Hope this helps.

As for explaining how it works, the other guys hit it the head. An expansion chamber is anything that allows the gasses to expand before they enter the gun.

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#5 User is offline   DVLCHLD 

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Posted 22 April 2010 - 08:07 AM

If you're running CO2 I recommend using a remote line and carrying the tank vertically on your belt or vest with a Palmer Stab on your marker.
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#6 User is offline   Krazy8 

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Posted 22 April 2010 - 09:23 AM

Nobody has addressed why the expansion chamber works.

co2 is a tempature sensative compressed liquid. As the liquid warms up it converts to a gas. The warmer that gas is the higher pressure it provides.
So when you are using the gun you are drawing a gas from the liquid in the tank. The faster you use the less time the liquid has warm up and eventually you might draw straight liquid into the gun. As that happens the tempurture drops in the operating system and you start seeing the cloud and white flaks after each shot.

The baffels and added internal volume to the operating system give the liquid co2 more time and space to warm up. You can still draw liquid into the gun if you over shoot the system even with the expansion chamber.

If you use a remote line on your gun, it too acts the same as an expansion chamber. All the coils give the co2 time and space to warm up...so using both and expansion chamber and a remote line is a bit of overkill.


As mentioned by other members the Palmers Stabilizer is a very good option for keeping liquid co2 out of the operating system...but typically it cost far more and most players will never utilize that kind of upgrade.
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#7 User is offline   Big Bone 

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Posted 22 April 2010 - 09:36 AM

Really an expansion chamber is just an open area to warm the Co2 and give it a chance de-liquify before shooting. Good ones have a cork screw thing inside, others are just an open tube. If you are familiar with Co2 I'm sure during rapid fire you started throwing snow out your barrel. This is the Co2 not completely expanded. This effects it's pressure and in turn accuracy along with a myriad of problems. An expansion chamber helps with this but is by no means a fix. If say, you are firing a 98 w/ etrigger and have it blasting away in full auto, the expansion chamber just gets cold too and you start throwing snow again. It does however give you more shots before this would normally happen.

The big debate is why would anyone fork over all that money for an expansion chamber or a stabilizer reg if they can just get a compressed air tank for around the same price. I personally hate Co2 and love air.


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#8 User is offline   D.B.D 

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Posted 22 April 2010 - 09:52 AM

ALL OF THIS IS PERTAINING TO CO2, NOT HPA. I have an expansion chamber and a remote line, in which I didn't know that the remote line also acted like an expansion chamber, until a few months ago.

However, there is frequent arguments whether the remote line will act like a expansion chamber in the winter, due to the cold temps.
Also, in winter and in the rain, the expansion chamber will cut down on the fog exiting your barrel as you shoot.
Aim for anything that is visible, most of my shots are either leg, elbow or head... that is if you see me first.
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#9 Guest_Lt.Vortex_*

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Posted 22 April 2010 - 10:00 AM

To sum up what all the guys said, go ahead and and buy the best chamber that you can afford. Some are better than others but for the most part they are all the same. There is relay no "fix" to Co2 but there is preventions to the freezing. Co2 was never intended for paintball but its cheep and easy to store. HPA is the best but people like you and me don't have that kind of money(at this time) so we go with Co2. There s nothing wrong with using Co2 as long keep your marker CLEAN and do the best to prevent freezing(which is why you want an expansion chamber). Its true that a coil cord dose the same thing as a chamber but that would require a vest or carrying the tank in your pocket.
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#10 User is offline   Dark Shadow Hunter 

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Posted 22 April 2010 - 10:59 AM

I just remembered one thing about the 98 series that most people don't think about. The platinum series have an inverted flare fitting where the air line connects to the valve. I believe that Tippmann has released an expansion chamber kit specifically for the platinum series. All prior versions of the 98 series can accept any of the after market expansion chambers widely available. Depending on which expansion chamber you go for, if that is the route you intend to go, you will have to purchase a vertical air adapter.
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#11 User is offline   bigsal39 

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Posted 22 April 2010 - 12:27 PM

i dont have an e trigger or anything its just a normal semi auto 98c so am i fine without expansion chambers, and everything? only problem i am having is i just have a gravity fed hopper.
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#12 User is offline   Krazy8 

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Posted 22 April 2010 - 01:05 PM

You are fine. The m98c line was designed with co2 in mind and it will not be adversly affected by the harsh conditions co2 can bring to the internals of other guns.

If you find yourself feezing the body and trying to see through a cloud of frost then you need to think about alternatives...but if your only trouble is the gravity hopper then you are good to go!

I spent way too much money trying to make my old 98 the best I could...only to find out it worked just as good stock as it did decked out. So learning this stuff now will save your wallet pain in the future.

Hopper...I would look at the Invert Reloader 'A', Extreme Rage Overdrive, Kingman Fasta 9v, and the Tippmann sl200. the 98c without modifications will not need any hopper better than the one mentioned and all the ones I mentioned will solve your shake and shoot situations.

Enjoy.

This post has been edited by Krazy8: 22 April 2010 - 01:09 PM

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#13 User is offline   DVLCHLD 

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Posted 22 April 2010 - 04:11 PM

For a stock mechanical trigger 98 Custom I recommend the Archon hopper. It will feed as fast as you can pull the trigger with no batteries. Several of us at my field have used them for years and they work great.
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