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| Killjoy |
 Posted: 06/23/2007 0:42 AM Post subject: |
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Brigadier General
Joined: 11 Nov 2006
Posts: 1011
518.79 Spud Bux
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| Quote: | | Yes, my gun is all metal, but after having my advanced combustion cannon explode in my hands and burn me, I am terribly paranoid. |
Aw no guts, no glory. At least if your hybrid explodes in your hands you'll probably be dead or uncoconcius so you won't feel a thing, till you wake up at the hospital if you survived. But yes, i would be paranod to if i had had one of my previos canons explode in my hands.
Anyways on a happier note, I find it clever noname that you used a soda bottle for the mixing tank, just seems so resourceful. |
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| SpudBlaster15 |
| Posted: 06/23/2007 2:11 AM Post subject: |
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Human blast shield
Joined: 18 Oct 2006
Posts: 1593
161.57 Spud Bux
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| noname wrote: | I was wondering (You may be able to answer this SB15):
I have 2 15' wires that I can attach to the BBQ ignitor. In a regular atmosphere, I can still get a 1/4" spark. Think it would be enough for a 1/16" spark in a 3x mix? |
Spark gap length is inversely proportional to atmospheric pressure. So, at 3x atm, your available spark gap would be 0.25/3 = 0.083, which is 1/12 of an inch. Yes, your 15' wires should work with a 1/16" gap.
Killjoy, didn't you have a PVC cannon filled with oxygen and hydrogen explode in your hands? |
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| Killjoy |
| Posted: 06/23/2007 2:49 AM Post subject: |
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Brigadier General
Joined: 11 Nov 2006
Posts: 1011
518.79 Spud Bux
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| yeah, but i try to block bad things like that form my mind, which is probably why i don't learn from my mistakes (though i don't experiment with oxygen and hydrogen in cannons anymore, my subconcious must have somethign to do with that). |
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| noname |
| Posted: 06/23/2007 9:23 AM Post subject: |
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Mr Vortex
Joined: 10 Apr 2006
Posts: 2524
2738.35 Spud Bux
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YES!!! Remote ignition! I wasn't thinking about recoil the first time I shot it and the bastard blasted backward (tongue twister?) and nailed me in the stomach.
Reasons I used a soda bottle:
Cheap, it's $1.59, plus now I have 2 liters of RootBeer in water bottles. I would have used a piece of 4" PVC like DR's, but 4" Sch 40 PVC is only available to me in 20 foot lengths, and its $45 for one of those.
The bottle is clear, so I can tell how much more water will fill it before it actually gets in the ignition chamber.
According to Rmich, it should allow me to fill the cannon to a bit more than 3x, which would be my maximum anyways.
I'l probably think of more stuff later. For now I'll set up remote ignition and the new barrel (10' x 1.5") and get a few more pics, possibly one insde with everything laid out so I can describe what all the stuff is for. |
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| sniperjosh |
| Posted: 07/13/2007 17:17 PM Post subject: |
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Specialist
Joined: 11 Oct 2005
Posts: 58
181.49 Spud Bux
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| hi wrote: |
one works the other doesnt.
its all in the fueling method.
mine is a gen. 1 (doh!) it uses a meter like a combustion and is nearly impossible to get right. |
um??? maybe your metering is off, ive had 0 missfires using my JAUSH from 1x mixes to 7x mixes. And the chamber volume is tiny (requires more accurate metering).
Nice hybrid, I personally am not a fan of gen II's, but it looks like u've got a good gun and an awsome setup with ur tree there  nice work! |
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