Figuring out the Firebox Question

Discussion in 'Reverse Flow' started by coachin&smokin, Mar 7, 2012.

  1. Using the calculator how could I measure this half circle firebox to check to make sure it's 1/3 the size and to see if I have enough air inlets in the box.  Any help is appreciated?  Looking at it I don't think the three squares on the door are enough.  The smoker is 250 gallon tank. 

  2. solaryellow

    solaryellow Limited Mod Group Lead

    The pit building calculator will give you the volume your firebox should be for the size of your cooking chamber. You can then use this ellipsis calculator to help determine the volume of your current firebox and compare the two.
  3. fourthwind

    fourthwind Master of the Pit OTBS Member SMF Premier Member

    or just use the calculator as if it were a complete piece of pipe and then divide by two!  I agree the inlet does not look large enough.  If you are below 4000 feet, I would go with 1.5 time the area of the exhaust pipe.   area of the exhaust is calculated by Radius x 2 x 3.14
    Last edited: Mar 7, 2012

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