Monday, February 13, 2012
Alcohol backpacking stove with continuously variable simmer control...
The latest in a long line of prototypes.
Maybe the most difficult stove to make so far, it's especially difficult achieving the accuracy of construction that this application of simmering control demands.
Each spoke leg/simmer control/pot stand support screws out (from a baseline that is the end of the spoke being level with the bottom of the larger can)eight full turns. This gives a degree of simmer from 100% down to 0%. Additionally, a simmer ring can be placed on top of the stove.
The stove permits fast swapping of the inner 3 ounce can for other cans with different hole configurations punched into them, giving a tremendous variation of heat output.
The only real drawback to this design is that the simmer control needs to be done with the larger can/spokes not hot. Otherwise, you'd need heat-resistant gloves to turn the very hot spoke ends. In other words, the degree of simmer has to be set before the stove is lit. I am currently working on a design that will permit real-time adjustment, even with the stove roaring.
Four different stoves. All using cat food cans.