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Unread 03-29-2013, 08:23 PM   #38
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Join Date: 08-01-12
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Originally Posted by NCoonis View Post
Dave, I could be wrong but I thought the formula for area of a circle was radius squared x pie. So in my case I'd have:
.75/2= .375 radius
.375 x .375 = .1406 radius squared
.1406 x 3.14 = .4415 square inches of one 3/4" circle
.4414 x 4 = 1.766 is my total intake.
A 3" exhaust using the above formula would give me a 7.06 sq in exhaust.
I'm going to look for a airflow calculator now to see where I should be at.
You are right, missed the squared step.
I'm Dave
Weber 26.75 OTG w/CI grates & SJ/WSM Mini
Home built 24"x72" reverse flow stick burner trailer with 18"x44" grill w/CI grates and upright SS gas oven/smoker.
Home built 48" fire pit with a 30"x30" Santa Maria style ranch grill.
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