Iller forwarder

[BrianAltEnergy (Brian Madera)]

I wonder if this reply I got from Wayne has any relevance to this problem?

First Down Draft Charcoal Gasifier

Hello Brian . All what JO said plus a couple thoughts of mine . Char along with small dry wood will catch fire and react much faster than raw wood blocks. As this char or dry small fuel burns it consumes the oxygen and leaves the wood gas flowing down through the remainder of the char bed and because of no oxygen in this gas the lower char will stay dormant and start packing up and get constipated.

This next comment is in the Premium section. I’ll try not to copy/paste too much from there but there is a lot of information in the post including a bit about the size of the fuel.

http://forum.driveonwood.com/t/choke-plate-variables/709/3?u=brianaltenergy

If we have a big and deep char bed and our driving habits are slow the reaction will be taking place high in the char bed and the ash or very fine carbon dust will begin to accumulate just below this area. After a while the char bed will begin to plug the gasifier.

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Also the the restriction plate can be moved closer to the nozzles and the restriction diameter decreased . This will let the oxygen plum get closer to the grate for better purging.