fire box size.

Discussion in 'Reverse Flow' started by sly anthony, Feb 13, 2014.

  1. I need help big time. i have exhausted my budget for my 250 gallon build and need materials for my fire box , i have 10 pieces of 18x20 1/4 in steel plates laying around, whats the best way to make the fire box using these without having to do too much cutting and joining?
  2. Hello Sly.  A little more info would help.  Also include pictures and drawings including dimensions.  By conventional I assume you mean not reverse flow.  What will be your heat source, propane or charcoal?  There is a pit calculator that a few members are a whizz at using.  I have never used it but by bumping your post it should come to their attention.  The questions I asked are relevant for their answeres.  If you get no reply please PM me and I will ask them to have a look at your thread.  Good luck.

  3. Thanks Danny, yess what i meant was an offset smoker. i will be using charcoal ( no propane short cuts for me ) lol.
  4. Hello Sly.  Pictures, measurements, drawings and thoughts of what you are wanting to build.  These things help with answers given.

  5. crazyq

    crazyq Meat Mopper

    What are the dimensions for that 250gl tank?
  6. This info is from a plate on the tank

    Length - 94 inches

    water capacity - 250 gal

    outside diameter - 30 inches

    shell thickness - .199 inches

    surface area - 61.5 square feet

    i am planning to do two doors and four racks , no counter weights (yet !!!! ) . Hoping to get enough steel plate to do reverse flow if not offset it is . just found some 6 inch and 4 inch dia steel pipe for chimney ( which should i use ?)
    Last edited: Feb 13, 2014
  7. crazyq

    crazyq Meat Mopper

    Roughly a 30x30x28 firebox size is what i would to aim for. That will put you at about 114%. I always like to run my FB's a little bigger then the calculator calls for.
  8. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    Sly, evening..... 250 gallon is pretty big for charcoal... FB... 30 x 30 x 24 is about the smallest FB you want to use...
    FB/CC opening.... 231 sq. in. for a RF smoker OR a SFB with tuning plates...
  9. crazyq

    crazyq Meat Mopper

    Thanks Dave for mentioning that about the charcoal. i forgot to add in my post that with a cooker of this size you will want to burn logs/wood. No way youd be able to do it on charcoal alone i fear. At least it wouldnt be feasable.
  10. right, now i have a problem for sure , gotta find steel for that size box. sorry about the charcoal , in the caribbean we charr the wood until it resembles charcoal, but it is still wood . i will post a pic so you can see what i am talking about , so i will be burning wood actually we just call it coals down here.
  11. crazyq

    crazyq Meat Mopper

    Oh ok i gotcha, yea thatll work.
  12. Well, 18 x 20, and you got ten? Then go 36" tall 36" wide, and 20 deep, all you can do. Then you still have to find a piece for the door, 36 x 36. The two you have left should be enough for the back, considering you will have the tank opening at the top rear.
  13. i was thinking about 36x36 but i was wondering if the fire box would be too big for the cook chamber and also this height of the box now makes the smoker a little too tall to access from the ground as it will be trailer mounted. im only 5.8 tall

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