Rf smoker. Having trouble navigating site. Looking for Dave Omaha, he helped me on my first smoker

[doug kiser]

Hey Dave, i need a little help on the size of the football" . Pipe for cc is 20" dia. X38". Firebox is 20"× 18" .

 

[chef jimmyj]

PM Dave Omak if he does not see this...JJ

 

[daveomak]

DaveOmak
Today at 11:36 am

http://www.smokingmeatforums.com/a/reverse-flow-smoker-how-to-calculate-build-tutorial

20 x 20 x .7854 x 38 = 11,940 cu. in.

11,940 x 0.001 = 12 sq. in. FB inlets  2.5" upper, 10" lower...

11,940 x 0.022

0.7854 x 3 x 3       = 37" height of stack above the CC..  You could go bigger than 3" diameter of the stack...   3" pipe is good..(3.07" ID)...  3" exhaust tube is good..  it should be insulated in colder climates....  maybe.....

11,940 x 0.004 = 48 sq. in.

Calculate needed opening.....          calculate 1/2 football opening....          Calculate height of full football opening and RF plate width of 18" wide...

53 sq. in...                                           2.8" ..  27 sq. in...                                 5.6" height of football = 54 sq. in. opening...

2017-03-27.png

• daveomak
• Mar 27, 2017

2017-03-27 (1).png

• daveomak
• Mar 27, 2017

....

2017-03-27 (2).png

• daveomak
• Mar 27, 2017

.......

1 A Football opening 3.jpg

• daveomak
• Mar 27, 2017

I think that answers your questions....    There are steps shown that show you how I got to the final answers.....