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Unread 02-24-2014, 07:00 PM   #1
Blownmope
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Default Smoker build question, air inlet size....

I am building a vertical smoker from a 75 gallon propane tank, is there an ideal size for the inlet? i.e. square inches or etc?

Thanks!
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Unread 02-24-2014, 07:41 PM   #2
SmittyJonz
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I'd run 2ea 2" ports or 2 large pinwheels or go with a single 4" Too Much is Always better than Too Little.

http://www.bbq-brethren.com/forum/sh...d.php?t=162551
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Unread 02-24-2014, 08:04 PM   #3
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Yea go for too much as it will never hurt. My last 2 UDS have had extra holes drilled on their maiden run as I thought I didn't put enough in the first place. Save yourself the headache and do it in the first place.
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Unread 02-24-2014, 08:14 PM   #4
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Yes!http://www.feldoncentral.com/bbqcalculator.html
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Unread 02-24-2014, 08:17 PM   #5
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Intake port(s) size should equal or be slightly larger than exhaust port.
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Unread 02-24-2014, 08:29 PM   #6
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Quote:
Originally Posted by Yellowhair42 View Post
Ain't that for Horizontal offsets? ? ? I didn't see anything for internal firebox or basket or Vertical ?
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Unread 02-24-2014, 08:42 PM   #7
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This one is quit a bit larger than yours
http://www.bbq-brethren.com/forum/sh...d.php?t=162551
but a length of 4" exhaust tubing has proven to be plenty. I would think you will be OK with anything 2"-4". Go to you local muffler shop, can't beat the price of a foot or two of exhaust tubing. Match intake and exhaust size.
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Unread 02-24-2014, 08:42 PM   #8
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Quote:
Originally Posted by cholloway View Post
Intake port(s) size should equal or be slightly larger than exhaust port.
I am thinking a 4" x 8" tubing on the inlet and outlet
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Unread 02-24-2014, 08:49 PM   #9
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Quote:
Originally Posted by dwfisk View Post
This one is quit a bit larger than yours
http://www.bbq-brethren.com/forum/sh...d.php?t=162551
but a length of 4" exhaust tubing has proven to be plenty. I would think you will be OK with anything 2"-4". Go to you local muffler shop, can't beat the price of a foot or two of exhaust tubing. Match intake and exhaust size.
I think I might be off on my gallon size, this tank is 30" in dia and about 6 foot tall.
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Unread 02-24-2014, 09:10 PM   #10
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Quote:
Originally Posted by SmittyJonz View Post
Ain't that for Horizontal offsets? ? ? I didn't see anything for internal firebox or basket or Vertical ?

Better than guessing.Volume and flow and square inches and that.
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