We would like to develop this to the point that it's a highly functional, automated system with pellets as a flowable fuel. The goal is to make a replicable system that is a practical alternative to gasoline.
I know nothing!
Well at least I can't answer your question but I am very interested in what you're doing.
Charcoal gasifying and Gary's gas fire in particular seem like the way to go to me they are a very simple as compared to other gasifiers.
If the heat from producing the charcoal in the first place can be captured and use either industrial process or 4 space heating, then you have a very practical system, with little waste.
I will be watching this space and following your links.
I see at the very least a charcoal powered generator in my future.
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
"Family farms work when the whole family works the farm." -- Adam Klaus
GEK is good, but they run on wood, not charcoal, so their system is more complex. Their advanced system is not open source, and we like to keep everything in the open.
We are working on it - we'd like to run this nice new mircro-tractor design on gas - we just announced the MicroTrac Workshop, which is a crash course on metal fabrication with a useful product on the other side - http://opensourceecology.org/microtractor-workshop/ . We are pushing the limits of public participation in technology.
You may want to ping Marcos Buenijo on this forum https://permies.com/t/19954/energy/Charcoal-Gasification He wrote a fair amount here on permies on the subject and may be well along on his own project by now. Also this http://www.driveonwood.com/ is an excellent resource, many people who convert their vehicles end up going the route of charcoal gasification for the simplicity and energy densification (less volume of fuel to carry) that approach provides.