Tennis ball mortar
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jackssmirkingrevenge
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No no no!jsefcik wrote:just trial and error my friend
SCIENCE!
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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mattyzip77
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try aqua net hairspray that always work the best for me
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jimmy101 wrote:Not when it comes to fueling a spudgun it doesn't.jsefcik wrote:so science doesnt involve trial and error?????
yes it does, some fuels work some dont, and sometimes you have to figure that out, again by trial and error,
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mattyzip77
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Im getting a mod!!! 
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Daltonultra
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I would NOT want to mess with any type of proellant more powerful than gasoline in that thing. It's just a couple can taped together; there's no structural integrity to it whatsoever.
Find yourself some sch40 2.5" nsf-PW PVC and experiment with gases to your heart's content, with no worries about catching a chunk of flying can.
Find yourself some sch40 2.5" nsf-PW PVC and experiment with gases to your heart's content, with no worries about catching a chunk of flying can.
The Official High-Tech Redneck
"There is no such thing as overkill." ~Solomon Short
"There is no such thing as overkill." ~Solomon Short
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jackssmirkingrevenge
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Of course it doesjsefcik wrote:so science doesnt involve trial and error?????
but in this case, we have established what works and what doesn't, so saying "spray and pray" instead of metering is a bit like suggested homeopathy as opposed to proven medicine.hectmarr wrote:You have to make many weapons, because this field is long and short life
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jimmy101
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If it doesn't work it isn't a "fuel".jsefcik wrote:yes it does, some fuels work some dont, and sometimes you have to figure that out, again by trial and error,jimmy101 wrote:Not when it comes to fueling a spudgun it doesn't.jsefcik wrote:so science doesnt involve trial and error?????
Science is perfectly capable of telling you which fuels will work (and how much to use) and which things won't (regardless of how much you use). No need for trial and error.
I understand Jesse's point, it's quite hard to quantify the amount of fluid expelled from an aerosol can, and you determine the amount of time you spray experimentally. Even if you know it takes X mLs of petroleum ether to get the requisite mix, but the nozzle is an unknown variable.
When you're using volumetric or manometric metering, you know exactly how much fuel you need, and that doesn't require any experimental determination.
Tl;dr, Jesse, you're right to an extent, everyone else is right as well.
When you're using volumetric or manometric metering, you know exactly how much fuel you need, and that doesn't require any experimental determination.
Tl;dr, Jesse, you're right to an extent, everyone else is right as well.
/sarcasm, /hyperbole
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jimmy101
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Uh, no. A fuel works or it doesn't and that is 100% predictable without doing any trial and error.jsefcik wrote: yes it does, some fuels work some dont, and sometimes you have to figure that out, again by trial and error,
The only time trial and error comes in is when a person is too lazy, and too poorly informed, to realize that a combustion spud gun will perform much better with properly metered fuel. The actual choice of the fuel has almost zero effect on the performance of the gun (as long as the fuel is sufficiently volatile, and that too is 100% predictable).