250 gallon offset smoker
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- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Looking forward to reading your results.
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- Pilgrim
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Re: 250 gallon offset smoker
I have some questions about the smokestack. Is my smokestack to small? How large can it be before getting to large?
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:I have some questions about the smokestack. Is my smokestack to small? How large can it be before getting to large?
In my opinion yes.
I would use a 6" ID 36" tall.
At 5.75 and 48" tall in my opinion is slowing your draft and the cooker cannot breathe properly.
Even an 8" at 36" tall would be better.
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- Pilgrim
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Re: 250 gallon offset smoker
36" from the top of the cc or from where I attached it?
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:36" from the top of the cc or from where I attached it?
36" total length. Meaning if you start at the plenum go 36" up from there.
Are you planning on raising your plenum?
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- Pilgrim
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Re: 250 gallon offset smoker
Ok. Not for now. It's somewhat complicated so I'll see first how it works if I just do the intakes, fire grate and change the smokestack. I'll probably add a baffle plate at the FB to CC opening.
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:Ok. Not for now. It's somewhat complicated so I'll see first how it works if I just do the intakes, fire grate and change the smokestack. I'll probably add a baffle plate at the FB to CC opening.
A baffle plate to direct the heat smoke down?
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- Pilgrim
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Re: 250 gallon offset smoker
Yes. Is it a bad idea?
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:Yes. Is it a bad idea?
Your exhaust is below your grate correct?
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- Pilgrim
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Re: 250 gallon offset smoker
Mostly. The top of the exhaust is just a bit higher than the bottom grate.
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:Mostly. The top of the exhaust is just a bit higher than the bottom grate.
Then if I were you I would point the deflector up like a Jambo. This will allow the heat smoke to rise and come down. if you push it down and create a good draft everything will basically move below grate level.
This is a Jambo.
- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Now since your opening is below grate your firebox side will suffer doing this.
What I would do before any deflector is do the mods then see what it does.
What I would do before any deflector is do the mods then see what it does.
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- Pilgrim
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Re: 250 gallon offset smoker
I'm working on the modifications now. How small should I be able to get the temperature difference from one side to the other?
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- Cowboy
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Re: 250 gallon offset smoker
Artur wrote:I'm working on the modifications now. How small should I be able to get the temperature difference from one side to the other?
I’d guess you will see 50* or more with the end closest to the firebox running the hottest. A ThermoWorks 2 or 4 channel temp unit would tell you pretty accurately what your temps are. The grate temp probe has a clip to keep the tip where the temp sensing actually happens suspended. On a needle probe, run it through a potato with the tip fully protruding and set the potato on the grate.
Or, do the biscuit test. get your smoker up to temp and open a tube of ready made biscuits. Spread them out on the grates and cook. This will give you a good visual as to where your hot and cool spots are.
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- k.a.m.
- Chuck Wagon
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Re: 250 gallon offset smoker
Artur wrote:I'm working on the modifications now. How small should I be able to get the temperature difference from one side to the other?
Without tuning plates I would think at any given time 50° to 75° left to right.
Your temps will change with a loaded cooker as apposed to an empty or even 1/2 full cooker because the meat changes the flow of the cooker.
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