I'm currently building my first RF smoker out of 160 gallon tank. Everything has been sized pretty much by what the calculator said, my FB is going to be around 108% oversized and the throat is also a bit oversized.
I need to cut my FB plates soon. But I can't really decide on intake style, locations and number of them!
I've read that you'd want a lower and upper intake to fine-tune the combustion (Ribwizzard). Here's my plan, have a stab at it :)
The first picture is the side of my FB (both sides would be identical). There's a "texas slide" vent on both sides, under the fire level, together they're around 63 square inches which is a lot more than the 41.40 square inches the calculator calls for.
Is that a bad thing? I think it wouldn't matter, since you can always close down your intakes.
The second picture is the back of my firebox, there's a large pie vent centered on the door. It's above the fire level. This would be mainly to get more draft without increasing heat. Is it big enough compared to the other intakes (it's 30 square inches by itself), or should the upper- and lower intakes be roughly the same size?
I considered making all the vents pie vents since I have access to cnc plasma, but getting the pie vents under the fire grate level proved to be challenging...
My fire grate level is drawn about 6" off the bottom, is that ok?