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New Patio reverse flow build

post #1 of 15
Thread Starter 
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.
Edited by Regalking - 11/19/15 at 2:26pm
post #2 of 15
This should help....


http://www.smokingmeatforums.com/t/172425/standard-reverse-flow-smoker-calculator-by-daveomak-and-others-ready-to-use-rev5-6-19-15#post_1264161
post #3 of 15
Thread Starter 
3" x 11.9118 for the smoke stack?
post #4 of 15
Thread Starter 
2.5 x 17.1529 ?
post #5 of 15
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post #6 of 15
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post #7 of 15
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post #8 of 15
Thread Starter 
Reverse flow plate
post #9 of 15

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.

post #10 of 15
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
post #11 of 15

 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.....

post #12 of 15
Thread Starter 
What do you think will happen with the smaller firebox? Should I start over ?
post #13 of 15
Thread Starter 
What do you think will happen with the smaller firebox ? Should I start over with a bigger firebox ?
post #14 of 15
Quote:
Originally Posted by Regalking View Post

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.
post #15 of 15
Thread Starter 
I was planning on using a square basket using charcoal and wood chunks.
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