Firebox help

Discussion about Reverse Flow Smokers
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Dsbatten
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Firebox help

Post by Dsbatten » December 1st, 2015, 2:21 pm

I'm using an air tank. 24" dia x 76" long x 3/8" thick. Calculations show I need 11454.72 cu in or 6.62 cu ft. Roughly 22w x 22l x 23.5h. I am planning to use propane to heat and a tray with wood to make smoke. Does my firebox need to be exact to allow for the right heat since I won't be heating with wood. Plus what hole size, half moon or rectangular.

This is a reverse flow single rack with a possible half rack.

My first build.

Danny



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Re: Firebox help

Post by Rodcrafter » December 1st, 2015, 3:49 pm

Is this going to be an offset RF? Considering you are going to use "gas", it may as well be vertical so you can save a lot of fuel. Make sure that you open the bottom below the "gas burner" up so it gets plenty of air. Take a look at the gas safety thread on the home page. Most people on this site will try to discourage you from using gas it is just too dangerous. But hey, welcome to the crew.


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Pete Mazz
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Re: Firebox help

Post by Pete Mazz » December 1st, 2015, 5:17 pm

I'd go with a center feed. Your going to need a lot of BTU for that size CC.


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Re: Firebox help

Post by The Czar » December 1st, 2015, 6:18 pm

That's what she said....


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Re: Firebox help

Post by Dsbatten » December 2nd, 2015, 10:13 am

Yes an offset was the design.



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Re: Firebox help

Post by Rodcrafter » December 2nd, 2015, 7:19 pm

Do you mind if I ask, why would you want to go both gas and an offset?


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Re: Firebox help

Post by Dsbatten » December 2nd, 2015, 9:40 pm

For reverse flow what other option is there. From all the plans I've seen they show like that. I didn't figure what the heat source mattered. On the gas thing I made a duck blind few years back and it has 2 cooking ovens / hand warmers in it and it is heated by propane and not had any problems with oxygen mixture. Those are both 24"x24"x18"deep. And the exhaust goes 22 feet to exit opposite side to exit



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Re: Firebox help

Post by Dsbatten » December 2nd, 2015, 10:03 pm

Image

Image

This what I have so far



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Re: Firebox help

Post by Rodcrafter » December 3rd, 2015, 7:36 am

Looks like a nice job you're doing there. If you went with center feed, you can still go RF it is just going to enter the CC on both ends. Gizmo, and FishlessMickey have done several center feed. With this process you want to have a shadow plate above the flame then a space then the baffle plate. This reduces the hot spot in the center of the plate. At least with this process you won't waist most of the fuel, it will all go to heating the CC.

jm2cw

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Re: Firebox help

Post by Fishless Mickey » December 3rd, 2015, 11:29 am

:yth:


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Re: Firebox help

Post by Fishless Mickey » December 3rd, 2015, 11:31 am

Hahaha. I just noticed the signature. DC you ain't right =))


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Re: Firebox help

Post by The Czar » December 3rd, 2015, 4:03 pm

Fishless Mickey wrote:Hahaha. I just noticed the signature. DC you ain't right =))

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Re: Firebox help

Post by Rodcrafter » December 3rd, 2015, 4:06 pm

:BD:

Oh it's not your birthday! lol


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