New Patio reverse flow build

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Newbie
Original poster
Oct 12, 2015
29
11
Lebanon,TN
I'm starting my first reverse flow Patio build.
Cc is 14.25 Dia x 24 =3827.6 cu.in
Firebox round 14.25 x 8 =1275 cu.in
Smokestack = 84.194 cu.in
Rf pan ht= 4.34 W=13.116
FB vent opening low 3.83 high 0.77

How do I figure out the Smokestack size? I also need help on the size of the vents in the Firebox. Thanks for your help.
 
Last edited:
Per the calculator, you should shoot for a exhaust stack of 36" high.

Using the volume calculation, that would be a stack of 1.73" diameter.

I am not sold on the volume method of stack design (more on that in another thread some day), and in this case I would settle on 2" diameter at 36" high. Not a bad idea to go to 2.5" diameter at 36" high either.
 
I recommend using a slightly bigger exhaust like SmokeJumper. It's easier to adjust a damper on the exhaust than it is to replace the whole pipe. I was wondering if your firebox is large enough. 8" is pretty small
 
 Good points above....   When building a small RF smoker, the exhaust stack, under the RF plate and opening of the FB/CC should all be made larger...  Probably about 50%....    Small space don't flow air too well.....
 
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What do you think will happen with the smaller firebox ? Should I start over with a bigger firebox ?
 
What do you think will happen with the smaller firebox ? Should I start over with a bigger firebox ?
What do you plan on using as fuel? you won't need too big a fire in that size smoker but Im just having a hard time imagining working with that size firebox. I'm not saying it won't work.
 
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