Contributed by: SGT Rock, 4/1/02
Whether you're building a soda can stove, Cat stove, Turbo V8 or Esbit stove, the windscreen is an important part of the stove. Simple changes in the windscreen can drastically effect stove performance. On my Turbo V8 stove I made two screens. #1 was as tall as the pot and had a 1/8" gap around, and #2 barely came to under the handles but had a 1/4" gap all the way around. Normally you would expect the taller and tighter #1 screen to help transfer heat to the pot, but the truth was opposite. I boiled faster and with less fuel using the #2 shorter screen that had better air flow.
The best material I have found is aluminum oven liners. I had an MSR stove and the windscreen material they uses is exactly the same. They have this trick of folding the ends over about 1/16" to prevent cuts and make the windscreen a little stiffer. I haven't found that necessary. You find oven liners in grocery stores and stores like Wal-art where they sell disposable aluminum pans used to cook large meats like turkey.
If you build a stove to the instructions on this site and still have problems, check the windscreen.
Measure for your wind screen height. A good rule of thumb
is to make it to the bottom of the pot handles.
Cut the oven liner to the desired height, adding about
1" so there is room for error and adjustment.
Make your wind screen fit around your pot with about a 1/8" to 1/4" gap. Trim the top to the desired height. If your pot is too large, you will need to make a 2 piece wind screen.
*** Note: after much testing I have found that a wind screen should be large enough to have a 1/4" gap all the away around. Closer and you choke off the stove, further out and you loose heat. Windscreen height actually matters less than distance to the pot. I found that a windscreen as tall as the bottom of the handles was better than a tall one because it maintained better air flow and weighed less.***
Use the hole punch to make as many air holes around the
bottom edge as you can.
Use paper clips to secure the wind screen at the top and
bottom. If you have a two piece screen, you will need two extra paper clips.
I also add a bottom heat reflector. Cut the reflector
from some scraps to be just a little bigger than the pot stand.
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