OK, I built my drum last weekend and I went with 4 - 3/4" intake holes, and I drilled 6 - 1/2" outlets in the lid. The outlets are evenly spaced and three inches in from the outside edge.
It ran great, burned for 10 hours on 10 pounds of charcoal. Except, it would not get over 225 degrees with all 4 intakes open.
The problem, IMHO, is that the outlets are not allowing enough flow. What do you guys think?
I am planning on drilling the six outlets out to 3/4" and see if my theory is correct.
You do what you have to do, so you can do what you want to do!
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