JollyJohn wrote:Reference the clogging of the "blown" generators. At first, I thought the problem was my oak chippings, but even after oven drying, it still clogged, I had to keep raking the chippings to get them to fall down the tube to burn. I've built two of them, one with the air blowing through a tube across the bottom, and one with the tube at the top. I think the main problem was our damp British air, as the air tube from the aquarium pump choked up with water as well. They may well work really well on a nice hot sunny day here, but that is going to severely limit the amount of times they can be used.
The real problem is with condensation from the combustion accumulating in the exit tube/your smoke chamber. IIRC Saucisson built a condenser chamber in that thread. Not sure why your air pump tube is getting clogged, but it's very dry here in Colorado so that could be the difference.