View Full Version : Reverse flow smoker build!

10-09-2015, 10:43 PM
First day of the build got the cook chamber cut at 60" and the firebox at 22" and the doors cut in the cook chamber. I also went ahead and cut another 22" chunk for a firebox for a smoke house I'm going to build next while I had the plasma out.

10-09-2015, 10:48 PM
I also cut 2 3.5" pieces off of the pipe that I plan on welding 3/4 pipe in it for spokes to make wheels for the cooker

BBQ Freak
10-09-2015, 10:57 PM
cool keep us updated and wish I had to tools to build my own .

10-10-2015, 08:12 PM
Didn't have a chance to get a whole lot done today. Got the pieces cut that will cover the seams on the doors they are all one piece that I cut out of the leftover pipe. I figured that would be a lot easier than trying to bend flat bar to the contour of the pipe

10-10-2015, 08:15 PM
Sounds like I will probably be mounting the cooker on a small trailer that my father in law is giving me as long as I can fab it up to work

10-10-2015, 08:30 PM
Nice work, super clean cuts

10-10-2015, 08:56 PM
Nice work, super clean cuts

Thanks I actually only used a straight edge to run my plasma cutter next to on the long parallel cuts and just free handed on the round

Smoke on Badger Mountain
10-11-2015, 02:05 AM
Looking good! Nice work. super clean.

10-11-2015, 09:57 AM
Looking good!

10-11-2015, 01:15 PM
Looking nice! What plasma cutter are you using? I'm looking to buy one.

10-11-2015, 01:41 PM
Looking nice! What plasma cutter are you using? I'm looking to buy one.

It's actually a cheap one but it works great for the price. It's a lotos LT5000D drag tip and you can pick one up for under $400

10-11-2015, 01:45 PM
I fabbed up a circle cutter for my plasma for cutting all of the end caps out

10-11-2015, 01:52 PM
Picked up the free trailer frame today it's going to need some work but I think I can make it work

10-15-2015, 10:07 PM
I love these build threads

10-15-2015, 10:13 PM
What was the original purpose for that trailer...I can't figure it out ?

10-15-2015, 11:30 PM
I have 4" pipe to make a stack out of should I run one stack or 2 side by side? Any need for a damper on the stack

10-15-2015, 11:35 PM
What was the original purpose for that trailer...I can't figure it out ?

He said whoever had it before hauled those old huge satellite receivers for tv on it.... Might also be getting an axle ,springs and wheels and tires thrown in with it too

10-16-2015, 03:42 AM
Looks cool!

10-16-2015, 05:16 AM
I have 4" pipe to make a stack out of should I run one stack or 2 side by side? Any need for a damper on the stack

Judging from the pics, I'm guessing your pipe dia. at 16". Running those dimensions through Feldon's, calculates a 4" exhaust needs to be 17 5/8" long. No need for 2 pipes.
If your pipe is 20" in dia. a 4" exhaust should be 27 1/2". Still no need for 2 pipes.

10-16-2015, 04:18 PM
I welded the trim to the doors and I ended up fabbing up my own hinges and got them welded on

10-16-2015, 09:22 PM
Hope to get more done tomorrow might work on the firebox and reverse flow plate

10-17-2015, 06:21 PM
Cut the end cap to go inside for a little cleaner look using my new circle cutting guide for my plasma and it worked great

10-17-2015, 06:28 PM
I think the question of how many and how large should also consider how you intend to rack the cooker, and how you cook. If you are doing a single rack, you have the option of locating it at great height off the end, or higher up. If you are going to have two racks, you will want the exhaust to come in at the same height as the upper rack. I know that some like to come off the end cap, others like to come off the cook chamber barrel, I have no proof, but, have always felt coming off the end made more sense for air flow.

10-17-2015, 06:29 PM
Nice job!!
You seem to be making some pretty good progress. And the plasma cutter seems to be doing a good job.

BBQ Freak
10-17-2015, 08:30 PM
awesome job dude coming together great .:bow:

10-17-2015, 10:41 PM
What is recommended on the inside of the firebox door to keep it from warping from heat? Just a square frame welded the door a little smaller than the opening or a x pattern or both. I plan on making 2 vents for air intake to the firebox using 3" pipe caps can they be put in the door like the old style wood stoves or do they need to be below the fire like I have seen on other smokers. I might be a little limited on space below the door

10-17-2015, 11:22 PM
Does anyone know how big the opening at the end of reverse flow plate should be.. Sorry for all the questions just trying to get some info rounded up from some of you guys that have built these when I get to those phases of the build..... Thanks in advance for any advice

10-18-2015, 06:10 AM
For a flat firebox door, I like a frame and an "X" pattern of either square tubing or solid square rod, 3/4" or 1".

Intakes at or below the fire best, but not essential.

Try an get the opening at the end of the RF plate at least the same area as the opening between the firebox and cook chamber, maybe a little larger. Given your tank diameter a few inches should be plenty.

You build is coming along nicely, looking really good. :thumb:

Mark M
10-18-2015, 10:20 AM
Looking really good. Might have to get me a plasma cutter. That is cool.

10-18-2015, 05:14 PM
I got the firebox door cut out and a frame tacked on.... Had to break out the old trusty miller buzzbox welder because I ran out of gas for my mig welder

10-19-2015, 10:38 AM
Great looking build.

10-21-2015, 09:22 AM
You are doing a Great Job, keep up the good work, can't wait to see more.

Bob C Cue
10-21-2015, 01:20 PM
Nice job but I could make one just like that if I had the tools, materials, skills, creativity and work ethic that you have! Just saying'.

10-21-2015, 11:35 PM
Forgot to mention this is a very low budget build I'm at a total of $5 for the bolts I put in the hinges... Everything else I have got from the scrap pile at work. If everything works out right I should only have to buy a couple more bolts and 2 temp gauges for the cook chamber

10-24-2015, 06:37 PM
Got a little bit more done on the firebox today. I cut out the vents in the firebox door. I made dampers using pipe that I capped and a bolt will get welded to the firebox door and go through the dampers with a nut welded to the damper so that it can be spun in or out. I also made some hinges with angle iron and flat bar. I still need to drill the holes and put bolts in the hinges and dampers.

10-25-2015, 07:54 PM
This is quite a process fabricating all of my own parts for the firebox getting closer to being done with it. I just need to weld a washer on the handle inside and outside of the door and a tapered catch in the firebox and a piece of flat bar on the end of the handle that will go to the catch

10-26-2015, 06:53 AM
Nice, that boy is gonna be good and air tight. You close er up that fire's going out.
and it looks like it's gonna breath good too.

Lookin good, keep us posted with pics!

10-26-2015, 06:31 PM
Do you guys think that the trim I put on the firebox door will strengthen it enough so it won't warp from heat? It's AR steel if that makes any difference