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PostPosted: Tue Sep 13, 2016 6:58 pm 
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Posts: 113
Hello Again,

I am still looking to make my own CO2 Bulk Tank for my 2240. I am looking to get opinions on some new ideas.

The original idea was tig welding sections of 12G CO2 cartridges, this worked fairly well, and I was even able to weld a hydraulic 1/8NPT Nipple to end. They hold 200 psi air pressure, most I have at my shop.

Do you guys think that tig welding these cartridges together will allow them to take the 600-1000 PSI, pressure load from a full CO2 Fill?

I was thinking about doing the same with 16 Gram CO2 Cartridges. The 16 Gram CO2 Cartridges are 7/8" in diameter. So I was thinking about making the tank so that it screws directly into the valve, replacing the valve cap. Shorten the gas tube, and secure the super cartridge with barrel bands.


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PostPosted: Tue Sep 13, 2016 7:19 pm 
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Joined: Mon Aug 08, 2016 7:23 am
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Location: Somewheres near the Atlantic
Sounds dangerous.


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PostPosted: Tue Sep 13, 2016 7:30 pm 
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This is what I'm wondering also.

My other solution is to make the tank from seamless 7/8s steel tubing, or 7/8s aluminum tubing.

However I am unfamiliar with doing the calculations to determine the required wall thickness.


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PostPosted: Tue Sep 13, 2016 7:35 pm 
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Joined: Thu Jun 01, 2006 7:37 pm
Posts: 970
Location: Edmonton,AB.
Order a dummy cartridge from the airgun store and use the appropriate connectors for the psi you are using.
Cutting corners and blowing yourself up will ruin your day! :rolleyes:

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PostPosted: Tue Sep 13, 2016 7:48 pm 
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Trigger I appreciate your advice, but I do not intend to cut corners. :lol:

I am familiar with the dummy cartridge, but I do not want to run a hose to a tank constantly. I am looking for a more portable way to get higher volume CO2 Fill.

I am still only doing the R&D phase, I do not intend to fill any vessel until I am sure it is safe.


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PostPosted: Tue Sep 13, 2016 8:05 pm 
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Joined: Thu May 07, 2015 8:30 pm
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Location: Eastern Townships
What about using 88/90 grams CO2 cartridges? There are tank blocks and adapters available, and IMHO it would be less hassles and much safer to use. I'm currently converting a QB78 to use those carts.

topic45142.html

http://www.archerairguns.com/Tank-Block ... kblock.htm


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PostPosted: Wed Sep 14, 2016 7:16 pm 
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That rig up looks pretty clumsy for my 8" Barrel 2240. I will keep going forward with what I'm at doing I think.


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PostPosted: Thu Sep 15, 2016 12:34 am 
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Location: Rocky Mtn Hse Alberta
Why not seal the tube at the valve and add a fill plug?
If you know how to TIG,I bet u have a lathe!?!

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PostPosted: Thu Sep 15, 2016 8:50 am 
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...


Last edited by leadslinger on Thu Sep 15, 2016 8:55 am, edited 1 time in total.

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PostPosted: Thu Sep 15, 2016 8:55 am 
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Location: Somewheres near the Atlantic
Or how about just drilling a hole in the maintube and co2 cart. Than tapping the co2 cart it for a fitting? So it comes out the bottom of the maintube.

Easier than trying to weld. And if it blows. It shoots out the bottom.


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PostPosted: Wed Sep 21, 2016 4:14 pm 
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Voltar1 wrote:
Why not seal the tube at the valve and add a fill plug?
If you know how to TIG,I bet u have a lathe!?!


Yes, I have access to a lathe 8)

Gippeto has given me some resources to calculate the tubing wall thickness I need. I am thinking about making it dual fuel, similiar to the discovery. I was not aware the tube itself could hold a co2 charge?

BTW, thanks for all the advice fellas. Appreciate it, this has become a addiction already :rolleyes: .


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PostPosted: Wed Sep 21, 2016 6:24 pm 
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Location: Rocky Mtn Hse Alberta
It is fun indeed?
Be sure and post your progress and methods?!! Hungry for stuff to read about!

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PostPosted: Wed Sep 21, 2016 10:22 pm 
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Location: Canada
Voltar1 wrote:
Why not seal the tube at the valve and add a fill plug?

Td85 wrote:
I was not aware the tube itself could hold a co2 charge?


Lots of folks have bulk filled the tube. This'll get you there..

https://www.bakerairguns.com/product/22 ... l-adapter/

You WILL need to secure the valve better though.

topic69553.html

Another way to go about it...many have done it this way with success...prefer the 8-32 LHSHCS myself. :)

http://www.network54.com/Realm/CFTech/BioValve4.htm

Al


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PostPosted: Fri Sep 30, 2016 7:31 pm 
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Joined: Sun Aug 04, 2013 4:14 pm
Posts: 15
Hi! Just recently back on here.

I did the same thing myself, I made a nipple to attach a 1/4npt nipple to the gun and added a 20oz paintball tank to my 2240.

I used an "L" type air quick disconnect and a 6" x 1/4npt nipple. I cut off the threads on one end and off the quick disconnect, then arc welded them together, ground them down and re welded because it looked like there were a couple of pinholes. I ground it down, and welded a ring onto the nipple where the end of the co2 cartridge would be and then I drilled a 9/16 hole in the end cap and used the welded ring to put pressure on the seal.

Then I used some hydraulic fittings to reduce to 1/8npt and hooked up the tank hose.


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