Reading Munxcub's thread about his build http://www.smokingmeatforums.com/t/143399/250l-build-now-a-35-gallon-build and his flow issues got me thinking. I know the calculator has a place to plug in the diameter of the stack you are using and it will tell you how long it needs to be, but I can find nothing for recommended stack diameter sizes or a calculator based on CC size. Is there a rule of thumb for stack diameter in relation to CC and/or FB size?
For instance, my New Braunfels SFB is 16X36 and has a 2 1/2' stack and I just don't think it draws like it should. It does OK, but it's a struggle to get it over 250° and hold it there. I also get smoke puffing out the cracks around the FB door, so it's obvious it isn't drawing like it really should.
Methinks a 4" stack would be better