Offset Trailer Build

Horizontal smokers with a side firebox and tuning plates.
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dacolson
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Offset Trailer Build

Post by dacolson » May 12th, 2020, 6:05 pm

I need some advice on this build. I picked up 3 air tanks and a trailer together for a great price and am now scratching my head a bit on how I want to build it out. I have an 80 gallon, a 30 gallon and a 20 gallon tank. My first thought was to do some sort of reverse flow w/ a warming chamber. 2nd thought was to nest the 2 smaller tanks inside one another as an insulated firebox. Here's the trouble with both plans. The 30 gallon tank is a better fit for the firebox given the size of the CC tank at 80 gallons. The 20 gallon tank is too small as a fire box for either idea and would be too small as a warming chamber. Should I scratch using either tank as a firebox and build my own? Or should I cut the 80 gallon tank down to 60 gallons? Hate to lose cooking surface. One other variable - the 20 gallon tank has a much thicker wall - 1/4" vs the 3/16 on the 30 gallon. It's better suited as a FB. Sooooo ... If I want to use the smaller tank, I have to cut the big one down to 60 gallons. I'm open to any and all ideas.

2 tanks on the trailer - 80 gallon and 20 gallon
585FFF1B-7E78-474F-A059-A1D822E8C9C1_1_105_c.jpeg
80 gallon tank
7DD82198-E1A1-424E-8B33-4BB922F438B9_1_105_c.jpeg
30 gallon tank
26919524-C14C-4E64-8553-2B819F04C9C6_1_105_c.jpeg
20 gallon tank
7E8453FC-72C1-4598-9F18-343773996FD5_1_105_c.jpeg
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dacolson
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Re: Offset Trailer Build

Post by dacolson » May 12th, 2020, 6:43 pm

My preference is to do a standard offset with the nested-insulated tanks. I'd use the below sizing from the Pit Sizer:
Screen Shot 2020-05-12 at 6.41.41 PM.png
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Big T
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Re: Offset Trailer Build

Post by Big T » May 12th, 2020, 8:54 pm

I would build a square FB and save the 2 smaller tanks for another project, possibly a small grill to mount on the trailer.


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Re: Offset Trailer Build

Post by dacolson » May 12th, 2020, 9:19 pm

You’re going to ruin my Italian flag color scheme. Lol


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Re: Offset Trailer Build

Post by dacolson » May 13th, 2020, 5:18 pm

Big T wrote:
May 12th, 2020, 8:54 pm
I would build a square FB and save the 2 smaller tanks for another project, possibly a small grill to mount on the trailer.
I’m feeling very partial to using the round FB and building a standard offset. I just like the idea and look of it on this build. I’ve run the numbers and here is my plan so far.
- Cut 18” off the end of the large CC tank - the green one - to use as the FB. That gives me roughly 22 gallons in the FB and 57 gallons in the CC with about 44” of rack space.

That leaves me with the two smaller tanks. I like the idea of using the 20 gallon tank as a charcoal grill on the back side of the smoker.

Has anyone done a warming chamber on a standard offset? The 30 gallon tank would make a sweet one. Could it go above the FB w/ a baffle between the FB and the WC and one between the FB and the CC? Do small smokes in the vertical with the FB/CC baffle closed or just crack the FB/WC chamber to keep things warm during a normal smoke. Thoughts?


Smoking meat - Offset RF Smoker. Big Green Egg. Homemade mailbox cold smoker.
Novice welder - Everlast PowerMTS 252STi
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Re: Offset Trailer Build

Post by dacolson » May 13th, 2020, 5:19 pm

I suppose I could throw tuning plates in and treat it like an RF if I put a baffle between the CC and the WC as well ...


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Re: Offset Trailer Build

Post by Big T » May 13th, 2020, 10:46 pm

I run my RF CC and WC at the same time but at different temps so I don't see any issues doing the same thing on a traditional offset. One of the members on here named RC has a hybrid design that can be used as a RF or an offset and it has a WC over the FB as well as a WC/CC at the other end of the CC. He also built a GF chute and FB that can be mounted on the side of his WC for doing long cooks. I guess what I'm rambling about is that anything is possible but it may take some trial and error to figure it out and you might have to do a few mods along the way. I know there's pictures of it on the forum but it was a long time ago. Oh and I also like the look of the round FB and CC, my old rig was set up like that.


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Re: Offset Trailer Build

Post by dacolson » May 14th, 2020, 7:19 am

Thanks Big T. I think I’m gonna go for it. Just looking for any obvious oversights I might be (most likely am) making. Thank you for chiming in. I’ll start a new thread once metal starts flying.


Smoking meat - Offset RF Smoker. Big Green Egg. Homemade mailbox cold smoker.
Novice welder - Everlast PowerMTS 252STi
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