fuels help
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redalpha11
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i would like to know what youi think the best fuel is for a basic cannon.
MAPP gas. No question about that (unless you're worried about some insignificant price difference, but you'll have moved on to bigger and better things long before you use up one fuel cannister).
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
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TwitchTheAussie
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MAPP definitely. Although here Im using Lynx Pheonix and Voodoo deoderant together. Very good.
Raise your horns if you love metal.
CpTn_lAw
-spudgunning is like sex, once you've tasted, you can't wait til next time.
CpTn_lAw
On a basic, un-optimized spud shooter cannon it's really hard to beat propane...you'll never realize the power difference from MAPP. If you add a fan, multiple spark gaps, and a burst disk, you could better capture the 10% or so extra power of MAPP. Even then, realized performace improvement will be marginal. You can play with a virtual design with HGDT and see performance difference for yourself.
MAPP is 3 - 4x the cost of propane. However, as DYI said, 1 canister of either one is likely to last you the practical life of the cannon.
MAPP is 3 - 4x the cost of propane. However, as DYI said, 1 canister of either one is likely to last you the practical life of the cannon.
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THUNDERLORD
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Lucky guy...Posts a one sentence question and gets responses from the pros!
I sense a poll on this one maybe. 8)
BTW I would have wrote propane.
Starting fluid for cars is good but unsafe for a lot of designs.
I'm interested in nitrous oxide. oxygen addition and even gasoline mixes. Certain spray starch(?) is said to be good.
I'm more into pneumatics but the idea of not necessarily pressuring seems nice lately. Besides I have a particular design in mind.
I sense a poll on this one maybe. 8)
BTW I would have wrote propane.
Starting fluid for cars is good but unsafe for a lot of designs.
I'm interested in nitrous oxide. oxygen addition and even gasoline mixes. Certain spray starch(?) is said to be good.
I'm more into pneumatics but the idea of not necessarily pressuring seems nice lately. Besides I have a particular design in mind.
-----SPEED,STRENGTH, AND ACCURACY.-----
"Procrastination" is five syllables for "Sloth".
Theopia 8)
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"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!
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TwitchTheAussie
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Just to point out Nitrous Oxide is an oxidiser not an actual fuel. And Ive never heard about this spray starch idea. Sounds interesting.THUNDERLORD wrote: I'm interested in nitrous oxide. oxygen addition and even gasoline mixes. Certain spray starch(?) is said to be good.
Raise your horns if you love metal.
CpTn_lAw
-spudgunning is like sex, once you've tasted, you can't wait til next time.
CpTn_lAw
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THUNDERLORD
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It's a product for clothes in a spray can (can't remember name?).TwitchTheAussie wrote:Just to point out Nitrous Oxide is an oxidiser not an actual fuel. And Ive never heard about this spray starch idea. Sounds interesting.
Said to be good for spray and prays. That's all.
Enough on topic , If I had a chamber with a (Blow open) piston valve for use in few times hybrid, And was adding the oxydizer with the fuel, But never venting the chamber (besides what blows out with each shot) could it sustain ignition? (due to the oxydiser) Or will it eventually become too loaded with inert gas to get good performance?
BTW,Anyone pLZ i NDz hlp! Seriously I haven't tried it but must know. 8)
-----SPEED,STRENGTH, AND ACCURACY.-----
"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!
"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!
Afaik, oxidizers actually bind with the explosive gas on ignition...
So I think you would need to vent to get the best performance.
So I think you would need to vent to get the best performance.
Allthough we may be the most intelligent creature on this planet, we are also the most inconsistent.
To find peace within our existence we often create a logic that endangers our lives.
To find peace within our existence we often create a logic that endangers our lives.
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THUNDERLORD
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EDIT: ...once the chamber is filled with inert gasses of equal pressure to open the valve, no more fuel or oxidiser could be added without it opening the blow open valve. Bad for the design I was asking about.
So I'm not off topic, Most of the spray stuff used contains propane just in different brands and products.
BTW,Combustions are cool because you can say to yourself, "Now I'm cooking with gas!"
8)
So I'm not off topic, Most of the spray stuff used contains propane just in different brands and products.
BTW,Combustions are cool because you can say to yourself, "Now I'm cooking with gas!"
8)-----SPEED,STRENGTH, AND ACCURACY.-----
"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!
"Procrastination" is five syllables for "Sloth".
Theopia 8)
Born To Be Alive!
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jimmy101
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I would have to say the best fuel, taking cost into account, is butane. For $4 you can make a complete meter system. Hard to beat that with any other fuel.
Even without the syringe, a butane lighter is probably a more reproducable way to fuel a gun since the gas flow rate is mush lower than with a typical aerosol can.
Like others have said, with a basic gun the extra power of MAPP won't be realized. So it isn't worth the cost.
In any kind of spray-n-pray setup the fuel power is pretty much irrelevant. How easy it is to get a semi-consitent amount of fuel in the chamber, and the absence of junk in the fuel, are the most important aspects of an aerosol.
Even without the syringe, a butane lighter is probably a more reproducable way to fuel a gun since the gas flow rate is mush lower than with a typical aerosol can.
Like others have said, with a basic gun the extra power of MAPP won't be realized. So it isn't worth the cost.
In any kind of spray-n-pray setup the fuel power is pretty much irrelevant. How easy it is to get a semi-consitent amount of fuel in the chamber, and the absence of junk in the fuel, are the most important aspects of an aerosol.
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firey_ginga
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iv bin looking around and i see most people use gas and liqiud fuels has anyone tried using a solid fuel (like gunpowder or a mixture of diesel and fertalizer), or can anyone tell me y i wont work.
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CasinoVanart
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It will "work" but you won't be here to see it!!firey_ginga wrote:iv bin looking around and i see most people use gas and liqiud fuels has anyone tried using a solid fuel (like gunpowder or a mixture of diesel and fertalizer), or can anyone tell me y i wont work.
Think big boom.
Diesel and fertilizer=explosive
I sent you a PM detailing exactly what you're dealing with in regards to ANFO.iv bin looking around and i see most people use gas and liqiud fuels has anyone tried using a solid fuel (like gunpowder or a mixture of diesel and fertalizer), or can anyone tell me y i wont work.
As far as "sane" solid fuels like black powder, there's no reason that they won't work, but using such fuels would mean that it isn't a spudgun anymore, and this is a spudgun forum.
Please read the rules before posting again, it'll do you a lot of good here.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
the best ive used is right guard sport, but i got a can that was made in 2005 so it still works...for me its good enough cause it still goes far, still big bang ,still hear the crash of the potato in the trees 10 secnds later... :angry4: :angry4: :blob: :notworthy: :wav: :wav: :ky: