Moveable fire in firebox

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Upperdeckle24
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Moveable fire in firebox

Postby Upperdeckle24 » Sun Jan 06, 2019 3:18 pm

Getting everything together for my offset build and I was curious to know if anyone has ever heard of elongating the firebox a little so that I can move the fire closer or further to cook chamber to better regulate temps.
Maybe creating a rack on rails in the firebox so i am able to move fire towards or away from.
Maybe 6” or so, nothing drastic.
Just curious if this has been tried before, or if it’s even worth trying.
Thanks!
dwilliams35
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Re: Moveable fire in firebox

Postby dwilliams35 » Sun Jan 06, 2019 5:43 pm

Interesting idea, but is the expanded firebox going to put you way over as far as the proper ratios for those volumes?
Upperdeckle24
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Re: Moveable fire in firebox

Postby Upperdeckle24 » Sun Jan 06, 2019 6:14 pm

Possibly would, unless I shortened the height/width and added some length...
Just not really sure if moving the fire +/- 8” would give me the amount of adjustment to even make it feasible. Guess it would depend on the size fire I would need to hit temp in the first place.
dwilliams35
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Re: Moveable fire in firebox

Postby dwilliams35 » Mon Jan 07, 2019 7:35 am

Just gut feeling, I don’t think it would make enough difference to bother with, if any.. it’s a firebox we’re talking about, not a grill; the heat and smoke has to go SOMEWHERE, and it’s still all going through the same hole into the CC. The only way it would make a difference is if it’s shedding heat somewhere else, and that somewhere can only be the firebox wall in this case, which will probably be minimal.
Upperdeckle24
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Re: Moveable fire in firebox

Postby Upperdeckle24 » Mon Jan 07, 2019 7:40 am

Very true. Wanted to bounce the idea off of someone’s head before I got too deep into it.
Thanks for the insight.
GTR
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Re: Moveable fire in firebox

Postby GTR » Mon Jan 07, 2019 12:08 pm

Different way of going at the issue but as mentioned the heat will find the path of least resistance, ie. the cook chamber. Best way to regulate temps, IMO, is the old tried and true firebox damper. Run the stack wide open and adjust air flow at the firebox to control cook chamber temp.
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Chasdev
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Re: Moveable fire in firebox

Postby Chasdev » Mon Jan 07, 2019 5:39 pm

In Franklin's excellent book he talks about moving the fire closer to and farther away from the opening to the cook chamber to regulate temps.
If memory serves, he demonstrates in one of his videos.

https://www.youtube.com/user/BBQwithFranklin
Upperdeckle24
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Re: Moveable fire in firebox

Postby Upperdeckle24 » Mon Jan 07, 2019 9:59 pm

Thanks for the great info fellas!
StylishChic
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Re: Moveable fire in firebox

Postby StylishChic » Wed Jan 09, 2019 10:42 am

Chasdev wrote:In Franklin's excellent book he talks about moving the fire closer to and farther away from the opening to the cook chamber to regulate temps.
If memory serves, he demonstrates in one of his videos.

https://www.youtube.com/user/BBQwithFranklin


Thanks for the tips brother. :)
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