Wednesday, March 5, 2008

Beer Can Stove

Not my best photo work, but I just had to post of pic of this contraption. It is an alcohol powered beer can cook stove. I got the design by looking at a similar stove and came up with my own idea for this one.
Basically it is a cut down beer can held together with high temp gasket silicone. There is an interior chamber built out of aluminum from another can can that allows the fuel vapor to feed out of the jets on the side and on the tapered part near the top.
It runs on denatured alcohol or HEET (yes, the stuff you put in your cars gas tank) Pure grain alcohol works well too, but who wants to waste that as cooking fuel?
The whole concept of this is for ultralight backpacking. Less weight on the back while in the woods equals a happier backpacker. The stove has a dry weight of less than an ounce.
Fuel is carried in an everyday 20oz plastic soda bottle. Boil times for 16oz of water seem to stay in the 4.5min range depending on air temp.
Real world tests while backpacking in the White Oak Canyon area of the Shenandoah National Forest a few weeks ago proved its durability. Several of us brought stoves for cooking and melting snow due to the temps being in the teens. The Jet Boil stoves seemed to fair very well, as did the beer can stove. The MSR Whisperlight and Pocket Rocket didn't seem to do so well for various reasons and I ended up burning more than twice the fuel I anticipated melting snow for drinking water. Snow and ice conditions seem to be the Achilles heel for this stove. It works fine, but due to an unpressurized design it is not very efficient and that shows when you are forced to spend several hours melting snow for your water supply. The extra weight you have to carry in fuel for this also offsets the ultralight concept.
Overall I am very happy with it and will continue to use it. I even sent one to my buddy in Arkansas to play with and report back on.
...and for my next trick, the solar powered spot light!

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