Starting new Reverse Flow backyard pit - Need advice

Discussion in 'Smoker Builds' started by imattatx, Sep 11, 2014.

  1. imattatx

    imattatx Newbie

    I've searched but can't find exactly what I'm looking for.

    I'm starting a reverse flow pit. I was given a 4' pipe which is 20" diameter and 3/8" thick steel. I'm wanting to use this pipe for both the pit and firebox. So what I'm trying to figure out what size to make the firebox. If I make a 36" pit that leaves 12" of a firebox which the Feldon calculator says is correct but that seems too small to use.

    Basically I have 48" to divide between the pit and the firebox. What would you suggest?
  2. Go with Feldon's calculator.

    Happy smoken.

  3. imattatx

    imattatx Newbie

    Well Feldon's calculator states a 12" firebox for a 36" pit. I'm just thinking thats too small to use. Does anyone have one that small?
  4. bmudd14474

    bmudd14474 Smoking Guru Staff Member Administrator Group Lead OTBS Member SMF Premier Member

    DaveOmak will chime in and can give you help.
  5. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

    I believe for the FB size.. it should be 150% of what the calculator calls for.... as Brian said.. others with more knowledge will chime in....
  6. fordpilot

    fordpilot Newbie

  7. imattatx

    imattatx Newbie

    Ford pilot thanks for sharing! What size is your firebox and do you think you could of gone smaller?
  8. fordpilot

    fordpilot Newbie


    Yes I could, but I think it helps keeping the temp up! Plus I can move the fire in the box to help regulate the temp!
  9. fordpilot

    fordpilot Newbie

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