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Q-talk *ON TOPIC ONLY* QUALITY ON TOPIC discussion of Backyard BBQ, grilling, equipment and outdoor cookin' . ** Other cooking techniques are welcomed for when your cookin' in the kitchen. Post your hints, tips, tricks & techniques, success, failures, but stay on topic and watch for that hijacking.


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Old 08-25-2010, 06:18 PM   #1
Billy Ribs
Knows what a fatty is.

 
Join Date: 08-03-10
Location: Allen TX
Default Help! Smoker Modification

I’m going to add a vertical box to the end of my horizontal OK Joe smoker. I calculated the new total smoke chamber volume, the revised intake opening, and the calculation says I need an exhaust chimney that is 64” long, when using 3” pipe.

The Questions:

1. Can I divide that up into 3 separate pipes? Or does it need the actual length to get the correct draft?


2. Do I need a chimney, or can I use holes in the top or upper sides of the new box? I would use a slider over the holes to close it off when needed.


Your experience and suggestions are greatly appreciated.
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Old 08-25-2010, 06:25 PM   #2
HawgHeaven
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Join Date: 08-17-08
Location: Newark, DE
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I'm no design expert, but my Klose has the horizontal and vertical chambers... the chimney is maybe 6" long, located at the top of the vertical box. The vertical box acts as a chimney, and the flapper on the chimney helps control the draft.

I wasn't sure if I was gonna be able to deal with this design at first, but with the help of a very dear friend and fellow Klose owner, this thing is now a cookin' machine...
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Old 08-28-2010, 06:02 PM   #3
Billy Ribs
Knows what a fatty is.

 
Join Date: 08-03-10
Location: Allen TX
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Thank you Hawgheaven, I appreceate the feedback on your setup.

I was hoping to get a little advice from a builder on the site, but... I guess I'll just put two stacks (close to what the calculations recommend) and cap or uncap depending on what it ends up needing.

I would rather throw on the extra pipe and not need it, then not have a good draft.
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Old 08-28-2010, 09:26 PM   #4
jestridge
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Join Date: 12-28-07
Location: annville ky
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I usually go to the junk pile , grab up a piece of pipe and weld it on. Math hurt my head.
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