I guess its time for me to let the cat out of the bag.
For those who couldnt make the Argos event this year,I tried out an aluminum nozzle for the charcoal simple fire gasifier. My theory is that the aluminum,with its cast fins would disperse the heat outside the gasifier faster than it could absorb it. Inside.
I ran a 5000 watt generator. Using exhaust gas recirculation and water drip it ran great for about half hour without melting the nozzle. The generator started acting up at that point. Spark issue we think. Then we connected the gasifier to a larger 9000 watt generator which was not ser up for egr, and succeeded in melting off the end of the nozzle. So, prelimonary tests show that it could work.
Ive ordered a new ignition module so when it arrives ill test it some more.