Vinmaker wrote:Ok. so the coal just falls down as it burns. !! I get it. One is basically making a column of coal and as the coal burns up, the weight of the stack pushes the coal (ash) down and the system just keeps burning. Is this how a Chubby type stove works also. Those seem to be tall units also and could also contain a stack of coal.
From the comments, it seems to work great and it looks like such a simple design that looks clog-proof. Those Amish craftsman are so ingenious.
Actually the chubby doesn't have a magazine/hopper in it. It's just a round/slanted firepot design similar to the cylinder stove designs from the turn of the 20th century.
The stoves with hoppers are really nice due to the long burn times, easy shake downs (with the weight of fresh coal) and effeciency of the pre warmed coal out of the hopper. This design will ONLY work with anthracite because of the burn properties. Because the fire is below and within the bed, the coal in the hopper never ignites. Any other fuel would have the whole hopper burning and overfire the unit.