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Old 07-23-2013, 01:21 AM   #1
TheHojo
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Default Smoker build - RF - firebox size help

RF build -horizontal cooking chamber with a vertical chamber on top of fire box - I have done a search - but could not find a definitive answer - do I need to include volumn of both horizontal and vertical chambers when figuring size of fire box (1/3) - some say yes and some say no - any help would be appreciated - thank you
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Old 07-23-2013, 03:33 AM   #2
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I have a link to a calculator I found online. On my phone now. I'll post if for you in the AM.
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Old 07-23-2013, 05:33 AM   #3
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You do not need to figure both only firebox
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Old 07-23-2013, 06:18 AM   #4
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I have a link to a calculator I found online. On my phone now. I'll post if for you in the AM.
http://www.feldoncentral.com/bbqcalculator.html
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Old 07-23-2013, 07:43 AM   #5
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Quote:
Originally Posted by TuscaloosaQ View Post
You do not need to figure both only firebox
^ Yep!
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^ Feldon is a good calculator. If you can I recommend you oversize your firebox by 105%-110%. Also, if you think you might line your firebox (for example I used 1/2 split woodstove firebricks; 1-1/4 thick, to line the bottom of my firebox), take that into account when designing for internal dimensions.
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Old 07-23-2013, 10:03 AM   #6
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So if I am reading this correctly - firebox just needs to be one third the size of the horizontal chamber - DO NOT need to also include the vertical chamber in this calculation. Ran the numbers on Feldon - horizontal cooking chamber is 11304 cubic inches - thus it recommends a firebox of 3768 cubic inches. My firebox is 5654 cubic inches - thus 150% of the recommended firebox. Am I doing this correctly - thank you
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Old 07-23-2013, 10:56 AM   #7
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Thats the one. Mahalo
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Old 07-23-2013, 12:10 PM   #8
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here is another one

http://www.smokerbuilder.com/pitcalc/
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