TBMA-230 Oxy/Propylene Piston Hybrid

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.

What do you think?

AWESOME!
18
50%
Mildly interesting
2
6%
I'm scared
5
14%
I'm a pneub, go away hybrid supremacist
4
11%
Should have made a pengun instead
7
19%
 
Total votes: 36
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Crna Legija
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Mon Oct 11, 2010 11:59 pm

look really good. The only place iv seen more valves is at a hardware store :lol:
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Lockednloaded
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Tue Oct 12, 2010 10:36 pm

The new Ball valves looks great, but does it take longer to vent your chamber through the 1/2" nipple after the 1" BV?

P.S.
Has anyone ever tested the burst pressure of galvanized steel?
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SpudBlaster15
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Tue Oct 12, 2010 10:58 pm

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Last edited by SpudBlaster15 on Thu Jul 15, 2021 1:33 am, edited 1 time in total.
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Mon Oct 18, 2010 3:08 am

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Lockednloaded
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Mon Oct 25, 2010 9:47 pm

I ma have misinterpreted this, but DYI said he was playing around with GasEQ and he saw that oxygen mixes do not outperform air mixes with an equal volume of fuel.
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ramses
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Tue Oct 26, 2010 3:28 pm

correct, until you approach the speed of sound in the burning propellant gas.

The air powered version also heats the ~80% of air that is nitrogen, creating more pressure.

with equal volumes of fuel, pre-ignition pressure at 5x is 4 bar an 0 bar respectively. even with 1/4 the temperature increase, you will still get equal pressure.
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Mon Nov 15, 2010 6:33 pm

Any updates at this time?
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ramses
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Mon Nov 15, 2010 8:05 pm

:D :D :D :D

Are we allowed to talk about that now?

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Thu Nov 25, 2010 12:36 am

I haven't been able to ask if there have been any recent changes since the chat has been down, so is it still in the same state as last seen? Also, you've kind of explained it before, but I still don't understand your vent valve.. :?
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Last edited by SpudBlaster15 on Thu Jul 15, 2021 12:40 am, edited 1 time in total.
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saefroch
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Thu Nov 25, 2010 10:58 am

SpudBlaster15 wrote:my recently redeveloped interest in tossing nitrate groups onto organic molecules.
I'd love to hear all about this, but sadly I guess this falls in with the special projectile SWIM's making.
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