Hello to all,,, I was wondering if a brake drum forge (with a decent fan) which basically only has expanded steel grating covering the air inlet hole, is big/good enough to use with charcoal. The drum is about 15 inches in diameter and the air inlet is about 4 inches across. The air is feed into the side of a 4 inch pipe welded on the bottom with a piece of plate on a bolt on the bottom for regulation. Thanks to all,,,, JM