Hello Max, good to hear from you, hope everything is going well with you. Good eye on the drop plate and chain. The chain will go down a pipe protecting it.
Here is the Rev. #2 . I had the rotor plan in my head and forgot to get it on paper with the drop plate.
The air will come in through the brake rotor when runing as a TLUD. Yes it will be burn top down.
The brake rotor will also be used as nozzles like a forge for when it is being used as a charcoal gasifier. Thanks Mike LaRosa, for your brake rotor idea.
Yes, it will have secondary air added in the bottom of the insulated 8 " exhaust chimney to burn off tars and gases. The chimney will come off when I put my stainless steel Kon Tiki on top for continue loading burning mode, with a slidegate below it.
Everything below that will become dead air space when running that mode of operation. The air inlet pipe will be cap off. The brake rotor plate can be open or closed the hot char will just fall to the bottom and cool and go out.
Here are some more pictures and the Rev. Drawing #2
In this last picture the brake rotor and plate are supposed to be hung by the chains under the wheel, there should be no hot charcoal touching the chains there.
I am thinking on using refectory cement and screening in the lower part to seal up the wheel holes.
Trying to get three different modes of operation done using the the same vessel. If I could figure out a way to use a rocket stove for added heat and help with the making of charcoal I would.