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| adem70 |
 Posted: 08/24/2010 22:38 PM Post subject: properly expand propane into gas. |
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Corporal
Joined: 17 Aug 2009
Posts: 75
176.96 Spud Bux
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Alright guys I have another question for you. I started running my bbmg on 1pound propane tanks a while back, but the problem is that the propane expands when it hits my guns chamber, causing everything to ice up, and jam. I bought a co2 expansion chamber online, but it does not seem to help.
i have it all setup on a remote-line rig, and i dont understand how a 5 foot hose, and an expansion chamber are not enough for the liquid propane to expand. If anybody knows any tricks that'd be great. thanks. |
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| Crna Legija |
| Posted: 08/24/2010 22:57 PM Post subject: |
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shots shots shots
Joined: 20 Jul 2008
Posts: 1915
1664.80 Spud Bux
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| are you sure liquid propane isn't getting into the hose/gun |
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| jhalek90 |
| Posted: 08/24/2010 23:04 PM Post subject: |
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Lieutenant Colonel
Joined: 14 Aug 2009
Posts: 476
1341.46 Spud Bux
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i simply solved the same problem like this:
propane cylinder>ball valve>expansion chamber (1'' steel pipe nipple.)> main firing valve (blow gun)> vortex block.
This design has 2 effects.
if you open the ball valve, wait a second and the close it before shooting, you get a 20-40 round burst.
If you leave the ball valve open, usually only part way, you get full auto.
This approach causes a "Over cooling" of the gun after a few seconds.... over cooling takes a lot longer than if you had no expansion chamber. |
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| adem70 |
| Posted: 08/25/2010 14:17 PM Post subject: |
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Corporal
Joined: 17 Aug 2009
Posts: 75
176.96 Spud Bux
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| liquid propane is getting into the gun, thats my whole issue. jhalek, thats almost identical to the setup im using, i just dont have the valve. the reason liquid propane is getting into the gun is because i have the tanks upside down, because when upright they only get about 60 psi, and that barely makes my gun shoot properly. |
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