Tom' s Build

[wtphillips]

I am building a reverse flow offset smoker. I have a 100 gal propane tank (almost empty!) and a Firefox I built.
The tank is 15in dia and about 40in long. The fireboxis 16in wide,12in dp, and 12.5in tall. These should marry up at FB about 33% volume of CC.
I am using thr FB door as the intake air damper. BTW, is the term 'dam' the same as damper?
I do not completely understand the Daveomac tutorial. My questions here regard the RF plate size and location as well as those for the FB. I know the info is there but clarity for me is lacking.
Any education is appreciated.

Regards, FNG

 

[Fueling Around]

Really nice looking firebox.
The only pertinent piece of info I remember from Dave's (RIP) posts was to have separate upper and lower firebox vents. Lower controls the fire and upper controls the airflow

 

[wtphillips]

Built it before I found this forum!

 

[SMOKEOCD]

Wow I love that adjuster on the firebox!

 

[wtphillips]

The adjuster is a sacrificed 5 inch Harbor Freight c clamp (note the pivot) and silly welding bits. It swings out of the way to fully open the door when the slide is retracted.

 

[seenred]

Hi Tom! That FB is a thing of beauty!

A couple of important calculations in this kind of build are the ratio of volumes between the FB and the cook chamber...which, since you've already built the FB, that's too late to change. The other is the total area of the opening between the FB and the CC, which I'll assume you can still control. Lots of pit builders use the door for air intake - I expect that should work fine.

TBH, I never tried to use Dave's calculator formulas...his math skills were way over my head lol! And unfortunately, the pit calculator I liked is not available anymore.

If you're struggling to make sense of Dave's formulas, you might try this one:

Feldon's BBQ Pit Builder Calculator

It's very straightforward - you just plug in your dimensions and the calculator does everything else.

Gool luck with the build! I hope you'll post a build thread so we can all follow along!

Red