I’m afraid I won’t be much help. I only have about 100 total mile on this system, made up of short runs of 20 miles or less. Life was way too busy this past year for much driving on charcoal. I do have a pretty good supply of fuel stored for 2019, so I’m hoping for a little more road time.
Yes, I’m uncomfortable with very high exit temps and i also had a PVC elbow melt inside of my ammo can cooler when I let the temperature get up over 400.
I have a 2 inch layer of refractory insulation block in the bottom of my reactor and my nozzle openings are about 2 inches above that block.
I have thought about adding a hopper for more distance, but my current setup will do my daily round trip to work which is around 20 miles.
I’m very interested in learning from your experience. Where do you live and how can I see pictures of your setup?