Hey Parm, the cook chamber was originally 19" diameter and 60" length, I cut 10" out of the length to make the equation work out, hope that helps, oh ya I used feldons calc.
Cheers dude, tanks and cylinders are in ultra short supply here, safety police constantly intervening.
I've got one that's 16" diameter and 43" long, pit calc gives me all that I need but will the size work or is it too small. Don't wanna waste my time building something that might not work