Modified SOB

Discussion in 'Wood Smokers' started by tobywan, Dec 19, 2009.

  1. I have aquired a Tiernan, Son Of Brisket Cooker, 24X48 cook surface. Had a buddy build a 24" diameter by 24" long firebox and thought I had got the damper and the opening between the firebox & smoker large enough but am having trouble getting it to draw properly. Is there a specific ratio of damper opening to firebox/smoker/chimney. I modeled it after brand name smokers(traeger etc) at a local shop. Any help will be appreciated, Thanks
  2. rickw

    rickw Master of the Pit OTBS Member

  3. Great unit Ricky. It is similer in size to mine and has what looks like all the extras I hope to have on mine someday. Could you give me some stats? Lenght & diameter of chimney, total sq inches of damper in firebox door, size of opening between firebox & smoke chamber. I'd be interested in pics of the interior of the firebox & smoke chamber.

  4. rickw

    rickw Master of the Pit OTBS Member

    The stack on my unit is 4" in diameter and a total of 30" long including the elbow. Did you try the link I provided in the first response?
  5. Did just now. Haven't been on enough forums to realize that was a link. Thanks, This is what I should have done before I gave the welder to my buddy. I'll let you know what changes I needed to make & how it works out.
  6. rickw

    rickw Master of the Pit OTBS Member

    Good luck to ya, hope it works out for ya.
  7. falconrod

    falconrod Fire Starter SMF Premier Member

    I can't get the files to open, don't have Excel. Would you happen to know how high the stack should be for a standard CG-SFB. Would the stack modification of extending the bottom of the stack to just above the grate cause the original stack to be ineffective???
  8. solaryellow

    solaryellow Limited Mod Group Lead

    You can also use Open Office's Spreadsheet application to open it which costs you nothing but a few minutes of time.

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