how do i make my timmy run off of CO2???

[GT]

I am a huge supporter of CO2, ran it on mags for years and still use it on my Palmers. I am not saying that it will somehow "eat" the internals. But I am sure the first sign of liquid would pretty much kill the noid. I am not saying you cannot make it work, but seeing as how it seems some Timmies already have noid problems (or had), I wouldn't wanna chance it.

I think the issue is liquid in the 'niod and then expanding to a gas causing a huge spike in pressure, blowing the noid to bits. Just my 2 cents, any gun can run on c02.

[SlartyBartFast]

ok this guy knows his shizzle on CO2, read this article. He is only wrong about RT valved mags.

http://www.icdownersgroup.com/start.html

Ummm... No.

From the article he actually seems to not understand a single thing about the gas reactions, expansion, and thermal requirements.

Despite a lot of misinformation, he does however at least arrive at a useable CO2 setup.

The problem with CO2 is that heat is required to gasify the liquid and create the required gas. It's not that the flow of CO2 causes cold, it's because under high rates of fire, the CO2 gas that gets drawn through the lines hasn't warmed fully to ambient temperature.

Fire too rapidly, and the heat being absorbed by the liquid in the tank isn't enough to fully vaporise it quickly enough, so liquid begins to travel into the lines.....

The liquid then either causes problems with the gun because the seals freeze, or causes spikes in velocity as the liquid vaporises some where in the gun (dump chamber or barrel) that creates a pressure spike and a high fps shot.

[SlartyBartFast]

I think the issue is liquid in the 'niod and then expanding to a gas causing a huge spike in pressure, blowing the noid to bits. Just my 2 cents, any gun can run on c02.

That's THE #1 issue with CO2. Keeping the liquid out. Issue #2 is keeping the gas temperature stable or isolating a sectiopn and regulating output to limit fluctuation due to temperature change.

[fire1811]

just screw it in. everything will be just fin

[oldsoldier]

I beleive bob long states you CAN run a timmy off of Co2, but doesnt recommend it. It WILL get major dropoff...and, on the outside chance that liquid does get into the internals...well, gun is dead. Ask yourself if its worth it. Invest in a 92ci tank, fill it before you play, and play all day. I can get a case out of a 92ci tank, thats usually enough for a day of play.

[amb8]

A remote hose with 2 stabs also works really good.. If you dont mind using a remote.. Another problem with Co2 is dirty fills, thats the only issue i have seen using co2...
Good luck

[CoolHand]

. . . . . . Fire too rapidly, and the heat being absorbed by the liquid in the tank isn't enough to fully vaporise it quickly enough, so liquid begins to travel into the lines......

That would be true if you didn't have any regs in line with it. CO2 is very similar to many comercial refrigerants, in that when it is forced through an orifice (like in every regulator on the market) it either a) flash boils (thus turning to gas) or b) vaporizes and then solidifies (essentially creating dry snow) this solid then subliminates and we're back to a gas. Both of the scenarios basicly preclude the gas turning back into a liquid. For that to happen you'd have to either recompress it inside the marker, or drastically lower the tempurature (like many many degrees below zero). This is of course assuming that you are running the marker at less than 400 psi or so. Much above that, and the gas could reliquify given a cold enough ambient temp (very cold for people and paintball, but possible).

The big pinch to avoiding drop off is to have enough volume before the poppet to allow the snow to subliminate, or the gas to warm a fuzz before you ask it to do anything. I'd suggest a volumizer for the Timmy, biggest one you can lay your hands on.

That said, I think this whole CO2 drop off thing is a bit exaggerated. I've got an '03 Shocker here that I've been running on CO2. Anyone who's seen a shocker apart can tell you that they basically don't have any chamber to fill before the gas gets to the bolt, just one 3/16" ID passage about 1 & 1/2" long. My bud Eric (I cannot shoot it that fast ) has had it up to 18 bps with no visable drop off at all. That's with no volumizers at all. Of course it runs at ~1/2 the pressure that the Timmy will, but the Timmy also has ~10 times the space for expansion up front, so I'd say its at least a wash, and at best it should work better.

I'll be on AIM tonight after about 8pm Central time. If I can help you, let me know.

Later

[SlartyBartFast]

CO2 is very similar to many comercial refrigerants, in that when it is forced through an orifice (like in every regulator on the market) it either a) flash boils (thus turning to gas) or b) vaporizes and then solidifies (essentially creating dry snow) this solid then subliminates and we're back to a gas.

[m20power]

Just my two cents...
It seems like with how much your marker cost you would also have the money to afford a scuba tank and fill station, or if this is not possible get a very large 4500psi tank. The scuba tank can also help pay for itself by giving you cheaper air fills or if you play with friends you could charge them to use your tank.

While it seems possible to use CO2 with no ill effects a scuba tanks seems like it will be cheaper in the end and add less weight to your gun.

And for xXHavokXx's comment. Yes women here in Cali are hot, but they also tend to be not so nice and stuck up. And if you move to California, Stay out of the Valley.
Fresno=Hell

Ps

[oneworld]

Yah

i think i could do that!...my dad is the head fireman here..im sure he could give me free tank! and it wouldnt cost me to fill that

ill have to look into that.... running it off CO2 is gonna cost to much!!

ill talk to my papa and see what he can do!

[CoolHand]

i think i could do that!...my dad is the head fireman here..im sure he could give me free tank! and it wouldnt cost me to fill that . . . .

If you have compressed air available, go that route. It is possible, but as you said, it is much easier and cheaper to use HPA.

Slarty - I'm no HVAC guy, I've never studied it, I just know that if you pinch the coils on a rooftop heat exchanger, the refrigerant will boil just past the pinch point. So it then freezes up the coil, and the whole deal stops doing what it was meant to. This much I have observed, except for the boiling (that I was told by the guy who fixed it). If he lied to me I appologize. However, you said it yourself, its the pressure gradient that matters. Which is why I suggested he try to get the operating pressure as low as possible - to maximize the pressure drop across the reg.

The bottom line is that it can be done, but that is it far more complicated and expensive than using HPA. Its not worth arguing about either way.

I will close with Banana Man -

That is all.

[1ofkind]

Putting c02 into a 1200$ marker, just think about it

[whymillywhy]

What part of South Dakota do u live in, The Aberdeen field has it, Splat Zone in Rapid has it, Bridgewater field has it, where do you go!??!?!!?, PM me an IM address, I wanna talk to you

I am from SD too

[skife]

The CO2 can not be good for the 'noid. It might work, but for how long?

tank ran it in his bushmasters for over 2 years with no problems.




also i find it kind of funny everyone talks like co2 will eat the internals, someone already said this but co2 is an ineart gas, meaning its non corrosive.

the only problem is that liquid is bad, thats all

keep the tank warm, liquid out of the gun, and you should have no problems.

[Chronobreak]

anyone ask why u would get a 1200 marker and want to run co2? i think something is wrong here