Pnematic Venting Idea

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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risto
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Fri Mar 16, 2007 11:59 pm

i'll just go cut myself now...
SpudBlaster15
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Sat Mar 17, 2007 12:37 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 1:38 pm, edited 1 time in total.
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jjjd
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Sat Mar 17, 2007 12:57 pm

Ok, can you people read, I am going to be using a canister of air, oxygen, or whatever to fill a second chamber. I want this to push out the exaust, i could care less if it makes a better burn rate. Ignore the canister idea for now, i just wanted to do that to make it easyr to use, without having to pump it up or have a compresor with me. The fan will still be there to mix but have nothing to do with venting
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frankrede
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Sat Mar 17, 2007 1:02 pm

jjjd wrote:Ok, can you people read, I am going to be using a canister of air, oxygen, or whatever to fill a second chamber. I want this to push out the exaust, i could care less if it makes a better burn rate. Ignore the canister idea for now, i just wanted to do that to make it easyr to use, without having to pump it up or have a compresor with me. The fan will still be there to mix but have nothing to do with venting
The idea is stupid if I say. expensive and takes the portability away from combustions.
Current project: Afghanistan deployment
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Scope
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Sat Mar 17, 2007 1:28 pm

ofcourse because you are increasing the o2 levels... atmospheric air is only 18.8 (right?)% o2. by injecting more o2 your replacing alot of the N2 in the air (80ish percent right?) with more o2 this means you can add more propane without increasing pressure like a hybrid... if you add more propane with atmospheric air you will not burn all of it because you need more o2 to burn the rest. by injecting the o2 you are replacing alot of the useless gasses n2 and w.e else if just floating around with pure o2.. because your not vacuming hte chamber and injecting it with o2 its not gunna be like 95% oxygen and 5 propane but you will get more oxygen letting you add more propane


i also thing that this is safe... propane generaly only generate 60psi peak in the best conditions (right? sorry im taking this from memory). that leaves about 90 psi more room to get to the max pressure that use pneumatic guys take our sch40s up to (150). that means you need to get 250% the amount of combustion... correct me if im wrong but if metered propane gives you 100% optimum so you would have to double that to even get close to dangerous
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jjjd
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Sat Mar 17, 2007 4:24 pm

frankrede wrote:
jjjd wrote:Ok, can you people read, I am going to be using a canister of air, oxygen, or whatever to fill a second chamber. I want this to push out the exaust, i could care less if it makes a better burn rate. Ignore the canister idea for now, i just wanted to do that to make it easyr to use, without having to pump it up or have a compresor with me. The fan will still be there to mix but have nothing to do with venting
The idea is stupid if I say. expensive and takes the portability away from combustions.
How in any way does it take away from the protability... CANISTER, not compresor, this is the idea

And scope, i know what you mean to displace the exaust with oxygen to make, basicaly "air", im not shure how much i would have to add. does anyone know the oxygen volume of air to inert gases?
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frankrede
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Sat Mar 17, 2007 4:48 pm

It requires you to get oxygen filled and bought.
And its expensive.
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SpudBlaster15
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Sat Mar 17, 2007 5:12 pm

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 1:38 pm, edited 1 time in total.
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jjjd
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Sat Mar 17, 2007 5:19 pm

do you know what preasue those tanks sit at?, and i doubt ill have a 250ci, probably around 200, mabey 150.

Thanks, Andrew
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benstern
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Sat Mar 17, 2007 5:58 pm

It is still going to be uneconomical and extremely inconvenient.
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crazyfreak0075
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Sun Mar 18, 2007 4:09 pm

OMG lets stop with this it has more negatives then positive I wouldnt even attempt it.
I see where you are comming from though.
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Sun Mar 18, 2007 4:55 pm

Just get the fan.
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