I noted several times on the Yoder forum that I was able to use the intake damper on my Wichita only when I was using the charcoal basket. Charcoal doesn't need as much air to burn cleanly, so I was able to keep my ~225F temperature by closing the factory door and setting the damper about 1/3 open. With that setting, the coals in the basket would actually produce an open flame, and snake through the basket (minion style) for about 5 hours until the coals were depleted. Yoder must be aware of this or they wouldn't harp on the need to have a large "coal base." The problem I encountered, and heard from other owners, was that I had no way to maintain a large coal base throughout the cook without leaving the door open all the time. As soon as I attempted to close the door my coal bed would disappear, and Yoder suggested I just keep making new coals with a charcoal chimney throughout the cook in order to maintain a large coal base.
If we were to use
only coals on these smaller Yoder offsets then we could definitely use the intake damper (door closed) to control the temperatures. I've seen videos of old BBQ joints where they maintained a huge silo fire all day long and then used shovels to bring coals to the pits, which means their pits never actually see raw firewood because it is already reduced to embers when they shovel it in.
Likewise, I've seen videos where teams use barrel silos like this one to create the coals, and then scoop them into the cooker with a shovel:
Regarding the Cheyenne, there aren't many videos out there, but there is one cook named Michael Doyle who has posted a handful of videos demonstrating his Yoder Cheyenne with the heat management plate installed. When I initially watched his series of videos, I noticed he had adopted the "Yoder Way" of managing his fire. He talks about pre-heating his splits on top of the firebox, turning his cooker into the wind, but most importantly he completely abandoned the idea of using the damper to control temperatures and always cooks with the door wide open. He mentions that his temperature gets a little hot this way, but he continues to rely on the size of his fire to control temperature instead of closing the door.
Preheat the wood, turn the cooker into the wind, leave door open:
The temperature gets a little hot, but leaving the door open solves the smoldering issue and helps maintain the coal bed. However, smoke still pours out of this end when new wood is added for the same reasons it happens on the Wichita (notice the scorching above the door opening).
By contrast, this photo of my modified Wichita door from this past weekend shows that it still doesn't have any scorching after 2 months of cooks because I am able to leave the door closed now, and I prefer to add wood from the top door because it's much easier on my back and knees. I originally used the side door to add wood, but it's a little too confined in there for me to work the fire easily.