Nunja - andere Leute sind froh, wenn sie ihr CO flüssig in den Zylinder bekommen - rummst einfach viel besser...
Original von Flatliner
Um den Gasverbrauch durch flüssig austretendes CO2 zu minimieren würde sich ein oben genanntes System anbieten.
Weiß jemand wie sowas z.B. beim Paintball aufgebaut ist ? Handelt es sich, wie von mir vermutet vielleicht nur um eine mehrstufige
Anordnung von Düsen und Expansionskammern oder ist die ganze Sache doch etwas komplizierter?Dirk
Nichts kompliziertes daran, es ist einfach mehrere expansionskammern. Das hindert der flow aber sehr viel. Ein grosser puffertank is fur uns nog immer das beste.
Flussig ins cilinder ist nicht unbedingt das beste, viel kraft von das gas werded spendiert ohne rendament, dat ist immer schade.
um zu verhindern, dass flüssiges CO2 in den Zylinder kommt, sollte der Puffertank überhalb der Gasflasche liegen. Der Puffertank füllt sich dann nur mit Gas. Außer natürlich, wenn du auf dem Rücken liegst 
, dann ist es genau umgekehrt 
Möglich wäre auch, wenn nur der Zufluss des Puffertanks zum Zylinder oberhalb der Gasflasche liegt, dann müsste es auch gehen.
CO2 supply tanks have a fill of between 66% and 75% liquid.
Note:- 1 litre of liquid co2 is approx 1kg in weight.
Add a bent dip tube.
Hi Woody
Thanks for your hint with the tube and sorry for my bad english 
The tube would work well if the bot stands on his wheels. But laying on his back there is the same problem that i have in my full preasure Raptor COnflict.
In COnflict the bottle is build in with an angle of 30 degree and works fine.
But laying on his back it uses too much liquid CO2 (It lays on his back very often:D ).
I´m looking for the operating principle of the anti-liquid systems that are used in the paintball sport but can´t find any information.
Saving gas reaps free weight or more flips
greets Dirk
Hi Dirk,
A bent dip tube isn't going to help if your upside down. 
Paintballers who use co2 use an expansion chamber.
http://paintball.about.com/cs/airsystems/a/xchambers.htm
The simplest solution would be a bigger tank filled less than 50%.
Woody
Your English is MUCH better than Googles translation.
Edit .....Possible float solution?! ...... requires flexible ptfe tube due to LOW temperature.
Hi Dirk ...... Rather than trying to build an expansion chamber ...... why not just make sure your main supply bottle ALWAYS has one. EDIT :- By that I mean an expansion gap in the supply cylinder for the gas to expand into .
I still think the simplest solution is a bigger paintball bottle .....laid horizontal .......less than 1/2 full.
BTW ...What is your setup?
Paintball bottle ? grams
Buffer tank ?!
Valve
Ram with bleed hole ?
"But i can´t find any exploded drawing to build one myself "
Here's a link for you...... http://airsoldier.com/~haveblue/tech/patents/US005368007.pdf
They both work fine, but only for 10-12 flips
You mean that your gas runs out?
Burkert valves can have a delay in closing .....perhaps your getting some excess bleed thru?
Edit ......Quote from Burkert 5404 pdf
Response times
opening: 20- 400 ms
closing: 100-1500 ms
You could try ......( if you have the weight and can find /modify a suitable valve ) ....... putting a small solenoid valve between the main tank and the buffers .....so you turn OFF the main supply as the Burkert turns ON.....thus ensuring that it's ONLY your buffer tanks that are emptied @ each shot.
Link to ....."Solenoids - Modifying and Buying Details.."
scroll down just over 1/2 way.
http://www.dynopower.freeserve.co.uk/nitrous_oxide/
Note that the overvolted coil will get HOT ......perhaps even melt ..... It's just a thought.
Dirk,
I've done some calculations based on my assumption that the valve takes 1/2 a second to shut and your vent hole is .2mm ........It appears that you could easily lose twice your rams volume ......plus the firing shot ...in this short time.
Woody
