250 gallon trial and error

smokinwelder · Post by **smokinwelder** » February 22nd, 2013, 10:59 pm

Hi there. I am attempting to build a 250 gallon revese smoker. Im going to keep it simple with no warming box, just a firebox, cc, and trailer. Im really not sure what to do next. I did get my hands on a 4x8 sheet of 1/4" plate, but it wont be enough to complete the firebox. I suppose I should get what pieces I can cut up, and started. I was also hoping to get the smoker on the trailer here soon too. We shall see. thanks for looking.

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YouTube · Post by **Frank_Cox** » February 22nd, 2013, 11:18 pm

Looks like you got er goin there.....
use the pit calc and decide what sizes you need for everything and your on your way!

Post by **Rodcrafter** » February 23rd, 2013, 8:58 am

Where is your forklift? Just joking it sure makes it hard to do this stuff without some sort of lift.

Smokeone · Post by **Smokeone** » February 23rd, 2013, 9:55 am

Keep after it.

The Czar · Post by **The Czar** » February 23rd, 2013, 10:13 am

Score....now the fun begins....

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smokinwelder · Post by **smokinwelder** » February 23rd, 2013, 6:34 pm

I was wondering if someone could chime in and help me with the calculator. I think I cut my firebox half moon hole too big.

heres some dimensions......
tank....30"x84"
half moon....13" tallx28" wide

now I know I could cut whatever half moon size I want in the back plate of the firebox where the half moon will be, but can I get some suggestions? Do I need to take it to an extreme and cut cut out a piece of the half moon cut piece and weld it back on? Please tell me no...lol If i have to I will tho. Sorry if I seem a little slow when it comes to building one of these, but I just wanna get it right. Thank you......ps, if you need any other numbers lemme know. Thanks!

I also need to know if I can get away with a 24"x24"x30" firebox? thanks

Post by **Tom_Heath** » February 23rd, 2013, 8:38 pm

Omg...... your moon hole is screwed if its 28 feet. For sure.

smokinwelder · Post by **smokinwelder** » February 23rd, 2013, 8:44 pm

Smoker Tom wrote:Omg...... your moon hole is screwed if its 28 feet. For sure.

lol, your right. ........i dont know if this link will work, i looked for a calculator on here and couldnt find it.....so shoot me a link.......will this work? and what size should my moonshape hole be? height by width. Thanks.
Link to BBQ Pit Calculator

Smokeone · Post by **Smokeone** » February 23rd, 2013, 9:24 pm

viewforum.php?f=113
Here ya go.

smokinwelder · Post by **smokinwelder** » February 23rd, 2013, 9:35 pm

thank you smokeone. i put in all my numbers and the results all show 0. what am i missing besides a brain? maybe because it was a link? i tried looking through the forum to see where the acual thread is.....nothing.

The Czar · Post by **The Czar** » February 23rd, 2013, 9:52 pm

I know this sounds stupid but once you entered you numbers did you hit the submit button?

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Smokeone · Post by **Smokeone** » February 23rd, 2013, 9:57 pm

Put in as much as you can and hit submit.
It is in welding and metal working section, last topic.

My thought is just make your other moon the right size, and attach the two. Then seal with a weld bead where the larger exposes the smaller.

smokinwelder · Post by **smokinwelder** » February 23rd, 2013, 11:56 pm

dosnt sound silly at all.....lemme see if i can see it. Thanks for the fast responses......

ok here we go....

cylinder 30"x80"

fb 24"x30"x24"

chimney 6"

fb intake (square) 8" longx 3" wide

results:....

fb size diff 91.67

chimney length 30/57

2 intakes

throat size 138.24 squared......now whats 138.24 squared? what would that be in height and width in half moon? and do the other numbers look ok? thanks!

jwsimpleville · Post by **jwsimpleville** » February 24th, 2013, 3:52 am

My sugesstion would be to increase the size of your firebox to be 24"x30"x30"
While the numbers you posted will make it easier with a single 4'x8' sheet, its only calculated out to be 91% of the recommendedsize for the firebox.
Your half moon cutout does seem to big, my baffle plate is 28 wide and my cutout is setup so that the firebox sits below the baffle plate 1-2 inches. I forget off hand but yours could work if your planning to use the top of the firebox as part of the baffle plate. If im wrong I sure hope someone else with steer us both right, cause I'm also building a 250 smoker on a trailer.

YouTube · Post by **Frank_Cox** » February 24th, 2013, 1:41 pm

if it makes it easier, do not do a half moon....
it can be whatever shape you want it to be just as long as the throat opening is the at least the size recommended by the calc.
make a trapezoid shape. works just as good as a half moon.

smokinwelder · Post by **smokinwelder** » February 24th, 2013, 8:50 pm

well between taking out the tranny on my camaro for a regular checkup I acually got some stuff done.......hey frank, or anyone.......what size opening do I need if I do a half moon? Width and height? Ill make it that size from my firebox. Thanks.

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Post by **Tom_Heath** » February 24th, 2013, 9:46 pm

This is the calaulator that I have used in the past. I am slammed with catching up right now, its been a long weekend and my brain wont work that hard with out falling asleep. But this calc works very good. Just pay attention to the letters and numbers so that you get the right cu inchs.

http://www.had2know.com/academics/area- ... rmula.html

Post by **Tom_Heath** » February 24th, 2013, 9:50 pm

its the chart that says segment area calc......fill in the correct line vs number and it will tell u the cu inchs.

Play with the numbers till the cu inch works with a size that works for your app.

smokinwelder · Post by **smokinwelder** » February 24th, 2013, 10:32 pm

wow Tom, thats way above my thinking skills. Thanks for the link man, but Im so lost even after reading the example.....lol

Post by **Tom_Heath** » February 24th, 2013, 10:54 pm

LOL. Its really not bad, I'm not doing to bad, only fell asleep twice since my last post.

I will try to look at it tomorrow night, when I get home.

smokinwelder · Post by **smokinwelder** » February 25th, 2013, 7:58 am

Thanks tom.

smokinwelder · Post by **smokinwelder** » February 25th, 2013, 10:19 pm

can anyone throw me a bone on the height/width of my moon shape in my firebox should be?

The Czar · Post by **The Czar** » February 25th, 2013, 10:22 pm

Standby for Tom....they're in like two foot of snow....and if I know Tom he sat down and crashed....

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smokinwelder · Post by **smokinwelder** » February 26th, 2013, 9:47 am

dcman (The Czar) wrote:Standby for Tom....they're in like two foot of snow....and if I know Tom he sat down and crashed....

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lol standing by.

YouTube · Post by **Frank_Cox** » February 26th, 2013, 10:34 am

Do this shape.....

SmokerBuilder.com

250 gallon trial and error

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