FB_BBQ
MemberGot rid of the matchlight.
I am looking into offset smokers. One of the finalists is a reverse flow 20" diameter by 34" long "Compact Patio Smoker" by Johnson.
https://johnsonsmokers.com/compact-patio/
Instead of one stack, it has two 3" stacks (each 30" long). They do offer some customization and I am wondering about requesting 3.5" stacks instead.
It seems like Franklin and lots of others suggest about a 5" diameter stack for a smoker this size. With a 5" diameter pipe, the inner diameter would be 4.75" and the area of a cross section would be 17.72sqin. With dual 3" stacks, the combined cross section area is 11.89sqin (and two smaller pipes don't flow as well as one larger one). Going up to 3.5" pipe, the area rises to 16.59sqin. Any idea how much a dual-stack matters or that it is a reverse-flow smoker?
-OD- -ID- -Single- -Dual-
3.00" 2.75" _5.94" 11.89"
3.50" 3.25" _8.30" 16.59"
4.00" 3.75" 11.04"
5.00" 4.75" 17.72"
5.63" 5.38" 22.69"
Am I overthinking this? Thoughts?
https://johnsonsmokers.com/compact-patio/
Instead of one stack, it has two 3" stacks (each 30" long). They do offer some customization and I am wondering about requesting 3.5" stacks instead.
It seems like Franklin and lots of others suggest about a 5" diameter stack for a smoker this size. With a 5" diameter pipe, the inner diameter would be 4.75" and the area of a cross section would be 17.72sqin. With dual 3" stacks, the combined cross section area is 11.89sqin (and two smaller pipes don't flow as well as one larger one). Going up to 3.5" pipe, the area rises to 16.59sqin. Any idea how much a dual-stack matters or that it is a reverse-flow smoker?
-OD- -ID- -Single- -Dual-
3.00" 2.75" _5.94" 11.89"
3.50" 3.25" _8.30" 16.59"
4.00" 3.75" 11.04"
5.00" 4.75" 17.72"
5.63" 5.38" 22.69"
Am I overthinking this? Thoughts?
Last edited: