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New Reverse Flow Build

post #1 of 8
Thread Starter 

I just bought a 120 gallon smoker on a trailer from Dave's Custom in Riverview Florida. It didn't have a fire box, so let the fabrications began. We cut the smoker off the trailer and turned it around. We also extended the fenders out 6 inches. Using the pit calculator we are constructed a fire box, cut the end off, and the steel plate will also be a water pan. Here are a few pics of the work so far.

post #2 of 8
Morning.......

120 gallon smoker = 27,720 cubic inches...
FB/CC opening and area under the RF plate.... 27,720 x 0.004 = 110 ish square inches
FB air inlets..... 27,720 x 0.001 = 28 square inches.... and add an additional opening, directly across from the FB/CC opening, about 3-4 square inches..

I'm assuming you used Feldon's calculator.... Whatever calc. you used.... check your values with the ones I provided....


Dave
post #3 of 8
Thread Starter 
Dave, thanks for your help. I did have trouble keeping my temp up.
post #4 of 8
Thread Starter 



post #5 of 8
what are the measurements of your fire box?
post #6 of 8
Thread Starter 
24/18/20
post #7 of 8

Yeah, your firebox is about 8% too small.

post #8 of 8
Take your stack diameter and length into consideration. It all works together as a system to create, use and evacuate heat/smoke.
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