Here we go then ... a cobbled together wood-gas stove. The idea being that you light a fire in the inner cyclinder. Air is drawn in through the holes in the outer cylinder which feeds the fire but also heats up and comes out through the top holes in the inner cylinder. This hot air then mixes with the gas/smoke produced by the initial fire and reignites ... result is much less smoke/soot and a much hotter flame.



You can see the air feed holes in the outer and the holes in the inner at the top where the (now hot) air comes back in. Pot support fitted



Pot support clips onto the stove when not in use ... cunning



Hopefully you can just about make out the flames coming from the upper, inner air holes, that's where the majority of the heat is coming from, rather than the fire in the inner chamber. I haven't timed it yet but there's certainly plenty of heat produced and hardly any smoke ... I'm off to rummage through some more bins!

That's ace, you sure your in the right job?

Damn work-connection won't let me view photos.

From my own experience with a ghillie kettle I've been surprised at how much better / more efficient good wood fuel seems to be compared to meths. That's despite one of Stu's "super-sized" burners to put inside it. To be fair the meths is ancient, once it's all used up I'll try some fresh stuff but even so twigs and timber off-cuts have proved really quick.

That's ace, you sure your in the right job?

Some people may argue that what I do doesn't constitute a job I used to own a company that built performance motorcycle engines, so I suppose tinkering comes natural.

You're right CM there's an awful lot of potential heat stored in twigs ... I'm hoping this might help my inner tart who doesn't like his Ti pots getting sooty :)