My stack doesn't have a damper. I'm beginning to wonder if it's too small/restrictive.hogaboomer wrote: ↑November 2nd, 2021, 6:35 pmGotta be the stack damper, most guys say to leave it wide open. Control your temps with the firebox vents and the size of the fire.
It does look small. Is that 3 inch? Maybe it's too tall, IDK.kylersk wrote: ↑November 2nd, 2021, 7:11 pmMy stack doesn't have a damper. I'm beginning to wonder if it's too small/restrictive.hogaboomer wrote: ↑November 2nd, 2021, 6:35 pmGotta be the stack damper, most guys say to leave it wide open. Control your temps with the firebox vents and the size of the fire.
I have drawings at work. I'm sure I just went with the throat calculator found online.hogaboomer wrote: ↑November 2nd, 2021, 7:39 pmYou need to post all your dimensions. That throat looks awful small.
That says you need a 6-1/2 inch circle or a 9.12 inch diameter half moon. Just by looking at the pic, it's not anywhere close to that. Then again, I could be wrong, it's happened before.kylersk wrote: ↑November 2nd, 2021, 7:50 pmI have drawings at work. I'm sure I just went with the throat calculator found online.hogaboomer wrote: ↑November 2nd, 2021, 7:39 pmYou need to post all your dimensions. That throat looks awful small.
SheffSmoker wrote: ↑November 3rd, 2021, 6:34 amLooking at the numbers in the smokerbuilder pitcalc, you have a slightly undersized FB at 98%.
The throat comes out around the same at 30insq, the height is correct around 3in but check the top width of the half moon which should be 14.4in.
It could be down to fire management - are you getting thick white smoke?
I cut the plate 14.25 wide.SheffSmoker wrote: ↑November 3rd, 2021, 6:34 amLooking at the numbers in the smokerbuilder pitcalc, you have a slightly undersized FB at 98%.
The throat comes out around the same at 30insq, the height is correct around 3in but check the top width of the half moon which should be 14.4in.
It could be down to fire management - are you getting thick white smoke?
That tells me the fire is being obstructed.kylersk wrote: ↑November 2nd, 2021, 2:11 pmI have a reverse flow that I built using help from here. I've been struggling with the food color. I cooked a couple butts the other day and there is this charcoal/soot like appearance to it. It rubs off on my hands and it's black. Doesn't taste odd though. It's looks like, to me, if the flames in the firebox hit the top of the firebox that's when I get it. The whole inside of the smoking chamber is filled with this same black substance. The smoke doesn't appear to be dirty when I'm cooking? When I add a new split to the fire I keep the door open a bit to make sure it catches and burns. Then close. I'd guess I'm adding a new small split every half hour or so.
Could there be a design flaw that would cause this? Like smoke stack not proper? Firebox too small? I've tried different wood and it doesn't seem to matter. I get this same black soot... the top front of the fire box also has the soot when the fire gets too high and shoots out the front with door open.
https://smokerbuilder.com/forums/viewto ... 74#p111774
The half moon area of a 8.69 diamter circle is 30.13 sq inches. My half moon has a overall larger diameter than 8.69, it's 14.25 at the top of the moon. It's area is also 30.13.hogaboomer wrote: ↑November 3rd, 2021, 9:25 amThe calculator says your recommended half moon throat diameter is 8.69. Your quadrant dimension needs to be half that, 4.35. A half moon is half of a circle.