Tom, my hat off for welding 18 guage with a stick welder! My limit is about 2mm 0.08" whatevet thats in guage.
The cooler is 1.5-2mm, dont remember exactly. The gasifier is much thicker, 3 or 4mm steel. That thing looks small but is hevy as hell. I wuld WAG it weighs about 150 pounds.
But l did invest in a MIG last year, this shortened my fabrication time about 5 times. Fits dont have be so tight, no burn trugh, no slag… fantastic.
Well not realy. The cooler temp stays the same undependant of run time. Again, the cooler is not nearly as massive as it looks. It weighs maybee 30 pounds.
I have a unique ability here, l can adjust just the amount of water that has to go trugh the hearth so at no point l get any water in the gas. I determined my charcoal to water ratio trugh trial and error, so l did with charcoal/wood mix. This happens to be about 40% wood 60% charcoal by volume and one cup water per 2.5gal charcoal.
Since l add just enough water the system can handle, the gas is always dry. It has wery litle heat capacity so the most heat is lost a few feet down the gas pipe. Allso its important to say l put a lot of effort to air preheat. Not only this cools the gas considerably, it allso dumps energy right back in the gasifier where it can do usefull work cracking water, in a way cooling the gas twice.
Ok, some update. To tell the truth l was considering not reporting this, but for the sake of anyone copying the system l decided to go pass my embaresment
I did a couple of piping modifications on the air/gas suply and cleaned the filter.
I lit and went to work, what a frustration. Nothing worked. Lean, no hopper vacuum, didnt even hybrid. I tried lighting up again after work, same misery. Then l parked in front of the hardwere store and l bought parts to be able to mount a manual valve in series with the automixer so in case automixer dyes or a airleak occurs, l can still run the gasifier. The motor run fine on this manual air valve! What is going on??
Then l tryed the automixer once more, it was open 100%. Then it hit me, l piped the automixer wrong! I connected the air sampling hose to gas part of the membrane and vice versa so when the automixer detected lean, it leaned even further instead of richening.
Anyway, l swiched the hoses and the motor run. Drove home great, drove back to work today great.
What l have noticed now that l eliminated the air leaking seal on the gas pipe, the motor runs a bit rich with automixer. @Bobmac have you got any tips for that? If l remember right you have had the same problem?