Well you can do this but it would be better if you did a fuel measurements to find out how much is actually needed for optimal performance.
To do this, you just have to do some fairly simple chemistry. The combustion of isopropyl alcohol id as follows:
2C3H8O + 9O2 -> 6CO2 + 8H2O
So the ratio of oxygen to isopropyl alcohol is 2:9 ratio. Then since 21% of air is oxygen we put that into the equation: 2/9 * .21 = .04666 or 4.7%. So 4.7% of the chamber volume should be the isopropyl alcohol.
is alcohol a useable fuel?
4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
I still think that just a cheap spray bottle is a good idea, you really only need all kinds of measuring equipment for advanced spuds with propane and all that, after you find how many sprays you need, you don't really need to get any more precise than that.
Add me on MSN to chat about whatever!
Yeah isopropyl achohol works. I've used a spray bottle that beauty salons use to spray water or product on your hair...get em at a Sally Beauty Supply store. They make a nice little fog of achohol..use in spray and pray mode.
This was several years ago and I used the 70% stuff. It wasn't anything to write home about but it does work. A well aired out chamber and a couple of fog squirts. Doesn't work very well in cold or humid weather.
Another thing that works with the spray bottle in RC model engine gas 10% - 20 % nitro, and as low caster oil as you can find...it ends up collecting in the chamber. Good blast though....
Another thing that works with the spray bottle in RC model engine gas 10% - 20 % nitro, and as low caster oil as you can find...it ends up collecting in the chamber. Good blast though....
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jimmy101
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1. Yes, you can use alcohol or any other volatile flammable liquid.
2. No, you don't really need a sprayer or atomizer.
3. The quantity of alcohol required for a typical sized chamber is very small, generally a drop or two or three.
4. If you have a chamber fan (and we all know a combustion gun should have a chamber fan) it'll only takes a few seconds for the drops to evaporate.
5. Measuring a few drops accurately isn't all that easy. It is easy to get a combustable mixture, it is hard to get the mixture dead on.
More info on using liquid fuels is here.
2. No, you don't really need a sprayer or atomizer.
3. The quantity of alcohol required for a typical sized chamber is very small, generally a drop or two or three.
4. If you have a chamber fan (and we all know a combustion gun should have a chamber fan) it'll only takes a few seconds for the drops to evaporate.
5. Measuring a few drops accurately isn't all that easy. It is easy to get a combustable mixture, it is hard to get the mixture dead on.
More info on using liquid fuels is here.
