pneumatics for featherweight

[Rahulvyas]

if i change the valve of the soda cylinder, will it be fine?
maybe i would replace it with the fire extinguisher one, or maybe the paintball one?

[Liftoff]

I dont know, never used or disassembled a soda bottle, maybe someone else who did could give you some advice. But I strongly advice you against:

get some welding done for the fitting I need

[Rahulvyas]

ohk, i will get some fitting then ( if you dont recommend me getting it welded)

[Niels - Team K.a.L.M.]

I have one of those soda cylinders and the thread on the bottle differs from manufacturer to manufacturer.
So it's not simply a matter of screwing a different valve into it (Which was my wish).

Perhaps to person who sold it to you can help you out with your questions and parts.

[Rahulvyas]

the threading in mine one dosnt seem any special, its normal .. i also have some fitting for it, which cud help? also the pin valve is very difficult to press with fingers(impossible) , so will it be any trouble?
i will upload a pic

[Rahulvyas]

some pics of threading

[Rahulvyas]

Bought a proper co2 cylinder now! currently setting up the regulator on it..

What cylinder did u use in your bot? dosnt look branded , is it self made?

[Rahulvyas]

I just bought a scuba diving cylinder weighing 1.5kg, I have used a pneumatic regulator like this https://encrypted-tbn1.gstatic.com/i...s_ys8EoijQsv0A

The problem is , I think the regulator freezes inside when i turn the gas flow on. what is the solution to this?

Thanks

[Eventorizon]

QEV Question... I have been watching some videos and is the function of a QEV entirely dependant on pressure so it functions automatically?

Also, its this suitable as a dump valve? http://www.ebay.co.uk/itm/1-4-PT-Mal...item2c7ab4335a

I am guessing if you are putting the dump valve between the buffer and main tanks you only need one as both can vent via the same port?

[Eventorizon]

[ATTACH=CONFIG]4154[/ATTACH][ATTACH=CONFIG]4155[/ATTACH]
It will be difficult to understand what's in the system and how it works from a photo, a schematic is better... There are other ways to set up a low pressure system which may be simpler. This is how mine is set up...

For this to work you need two ports on the same side of the ram do you not? This isn't possible without adding a splitter to the port on the ram. Why would you bother?

[Rahulvyas]

was that question for me?
other than that, is it possible to use the small co2 cartridge refills (40g)-50g as buffer tank?

[Liftoff]

The dump should be on the buffer. On the paint ball bottle I'm using as a buffer the dump valve can be connected on the bottle fitting where the burst disk is. (Have a look at the first photos on this thread at pg1)

[Rahulvyas]

Liftoff, can you tell me where I could find full pressure valve and cylinder?

[Eventorizon]

The dump should be on the buffer. On the paint ball bottle I'm using as a buffer the dump valve can be connected on the bottle fitting where the burst disk is. (Have a look at the first photos on this thread at pg1)

What does the burst disc look like? I can identify most of the parts but not the burst disc.

[Rahulvyas]

it looks like a small copper circle sheet which fits inside this https://encrypted-tbn2.gstatic.com/i...1OA8jpcfFgo-9C