First Build: 24"x40" Offset

Horizontal smokers with a side firebox and tuning plates.
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440Hemi
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First Build: 24"x40" Offset

Post by 440Hemi » December 7th, 2017, 7:43 pm

Hey all. I've been reading on the forum for a while and finally decided to join and post my first smoker build. I'm building a standard offset 24"x40" offset smoker. I just sourced my pipe for the cook chamber and I'm now putting together some sketches for the design of the frame and firebox. I've been looking at some of the more expensive builders designs for inspiration and it seems like a lot of the builders use fire boxes that are much larger than the numbers I'm getting from the pit calc. The design I'd like to mimic utilizes a cook chamber of the same size as my pipe but has a 24"x24"x24" firebox. Am I going to run into any problems going with that size firebox on my build? I like the scale and look of the size they've chosen.

Also, what does everyone recommend I start building first (cook chamber, fire box, etc)? Is there a standard order of operations you employ when building a pit?

I look forward to the input and posting my progress.



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Re: First Build: 24"x40" Offset

Post by Big T » December 7th, 2017, 8:20 pm

Welcome aboard!! I'm not sure why the pits that you've been looking at have such large fire boxes unless they're insulated but I would stick with the pit calculator. I myself along with countless others have built many pits using the calculator and they all perform like a well oiled machine. When the FB is too large it is a real pain in the butt to maintain temperature and keep a clean burning fire. As for the order of operation, there's not really a wrong place to start on an offset. I usually start with the CC and then build the FB but I have started with the FB a few times because I didn't have all of the material for the CC. Throw up a rough sketch when you get a chance and some of the guys can give you some better feed back.


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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 7th, 2017, 8:59 pm

This is kinda what I was thinking. Don't plan on having a grill door on the firebox though.

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Re: First Build: 24"x40" Offset

Post by ajfoxy » December 8th, 2017, 12:48 am

Welcome to the crew.

Got to admit though... a grill door on the firebox does give it another aspect to cooking. Something different.


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Re: First Build: 24"x40" Offset

Post by Pete Mazz » December 8th, 2017, 5:04 am

Looks to me like that FB sits way too high.


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Re: First Build: 24"x40" Offset

Post by Rodcrafter » December 8th, 2017, 7:42 am

:welcome:

Welcome to the crew!

I would echo what has already been said. I made something similar and it works very well.

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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 8th, 2017, 10:47 am

Rodcrafter wrote::welcome:

Welcome to the crew!

I would echo what has already been said. I made something similar and it works very well.


Back Yard Smoker.jpg
Looks good! What size CC and FB?



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Re: First Build: 24"x40" Offset

Post by Squiggle » December 8th, 2017, 2:21 pm

"The Wombat" is a little smaller than RC's, but I used the calcs here & it's rock solid! :kewl:

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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 8th, 2017, 5:23 pm

Just picked up my pipe. It's used besides cleaning it up a bit with a grinder will I need to burn it out?

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Re: First Build: 24"x40" Offset

Post by pr0wlunwoof » December 8th, 2017, 5:56 pm

Nice pipe. Stick to the calculator. I didn't find it till I was well into my build and I was lucky to get in the 95% range with my insulated box. Had to redo my FB to CC opening and should redo my air intake to my FB, but I've cooked enough on it to know how to overcome. Long story short follow the calculator. My next build is based off the plans I got here. Measure twice, read calxulator 3 times, weld once.

Nice pipe btw! Keep your phone close and take lots of pics.

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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 8th, 2017, 7:41 pm

Pipe semi cleaned up with a flap disc. Laid out the door using angle iron and a small square. My door measures out to 36"x18". Before I cut, does that seem appropriate?

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Re: First Build: 24"x40" Offset

Post by ajfoxy » December 8th, 2017, 8:56 pm

I think the wheel alignment is out a tad...

As for the tank, if that's the size of it then the marked out door seems good to me. But perhaps wait for comment from the fellers that know what they are doing.


Learning generally boils down to "Repetition or the avoidance of pain", some people learn by doing, some by watching and some just have to pee on the electric fence.

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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 8th, 2017, 9:20 pm

ajfoxy wrote:I think the wheel alignment is out a tad...

As for the tank, if that's the size of it then the marked out door seems good to me. But perhaps wait for comment from the fellers that know what they are doing.
Lol just a little. That's another project I'm working on. Needed to get the frame to ride height to set the angle of the engine and rear end pinion angle.



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Re: First Build: 24"x40" Offset

Post by pr0wlunwoof » December 8th, 2017, 9:31 pm

Body off restoration. Name of my ... tape.

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Re: First Build: 24"x40" Offset

Post by Squiggle » December 9th, 2017, 5:51 pm

Pipe looks good, but there's a bit too much neg camber, even for circuit racing. :kewl:


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Re: First Build: 24"x40" Offset

Post by 440Hemi » December 9th, 2017, 8:27 pm

I got the door cut and the flanges fit to the door. My door sprung a bit. I tried the jack method with only a little success. Ended up bending one of my flanges and had to beat it back into shape with a hammer. Any suggestions?
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Re: First Build: 24"x40" Offset

Post by Big T » December 9th, 2017, 11:23 pm

I would get some 3/8'' or 1/2'' fiberglass rope gasket and glue it to the inside of the door strap before you weld the hinges in place. It'll seal it up and nobody will notice the small gap.


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Re: First Build: 24"x40" Offset

Post by Chukknob » December 18th, 2017, 10:16 pm

How did you cut your chamber door? Cutting wheel, plasma, or torch?



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Re: First Build: 24"x40" Offset

Post by Rodcrafter » January 16th, 2018, 9:37 pm

I would do what BigT said. I did that to my backyard cooker. Its a great way to go, I used 1 toggle clamp and it never has leaked.


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