How much free space do you need between racks for proper air circulation?

Discussion in 'Reverse Flow' started by rikun, Jul 23, 2015.

  1. rikun

    rikun Fire Starter


    I'm trying to fit three racks into my 160 gallon RF build. I'd be mainly cooking brisket flats, so I'm thinking 4" between racks will just fit flats in there.

    Do you think I'll run into air circulation issues with so little free space between racks? Here's a sketch of my plan:

    I'll probably weld in additional angle irons between those three, so I can get more space between my grates if I choose to use only 2 of them (or cooking butts, etc)
  2. chef jimmyj

    chef jimmyj Smoking Guru Staff Member Moderator Group Lead OTBS Member

    I'm no Smoker engineer but judging from seeing many different smokers and designs, that sounds tight to me. 6" is much more common. A good source for info like this is DaveOmak. Send a PM...JJ
  3. rikun

    rikun Fire Starter

    Yeah 6" is pretty common, but not doable if I want three grates in there. I did 3.2" on my big baby drum smoker I built just for flats, they did fit in there, but I had a problem when foiling them. The foil didn't fit if it wasn't very tightly wrapped. However the airflow was ok.

    I think I'll try 4" and add additional slides for 6" spacing if that's too tight.

Share This Page