Pneumatic questions, sorry!

[Eventorizon]

Been watching back over RW and trying to spot all the little hints and tips teams give to maximise the power or efficiency of their set ups.
The one that stood out was using Liquid CO2 like in Chaos 2 and a few other machines but so far as I know we cant get liquid CO2 at events. Also it seems logical that you would end up freezing the valves as the gas expanded into the cylinder causing it to jam. But there must be ways round this if Chaos 2 can use it with no problems.

Another which Kane mentioned was to have the largest buffer tank you can, so the gas can easily flow into the cylinder. Also making the routes as direct and straight as possible so you don't waste energy in the process.

Are there any other little tips people can suggest, or correct me on these ones.

I also have this half used powder extinguisher in my flat.
2013-06-03 15.22.00.jpg
Physically it is fine its just never been repressurised. Would this be alright to use as a buffer or even a main tank?

It has the following on the side...
Working Pressure: 13.5 Bar
Test Pressure: 22 Bar

The maximum our cylinders can take is 16 bar so it would be 37.5% less than the testing pressure. And if I remember right, parts must be tested to 20% more than their intended operating pressure so this would be ok.

[geeza]

Alex, we all use liquid CO2. George was referring to the fact that in the main bottle it will be liquid but by the time it reaches the ram it should be gas. Otherwise the whole system will freeze, nothing will work. What Kane said is exactly correct large buffer, short pipe work.
That dry powder will be ok for a buffer at that pressure yes but not suitable for a main tank.