Trailer Smoker remodel

Horizontal smokers with a side firebox and tuning plates.
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Re: RE: Re: Trailer Smoker remodel

Postby Draagro » October 6th, 2017, 10:01 pm

Mokoro wrote:See what you mean about the original person having no clue.. two tiny fireboxes? And that lid?!?! You'd need a crane to lift it! b-(
Oh it was awful, but I got the whole thing for less than the trailer would have cost.


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Trailer Smoker remodel

Postby Rodcrafter » October 7th, 2017, 10:37 am

I don’t want to make you do more work but cabinet style doors would make effortless access and I think it would look great too.
Oh and about the big FB it’s about heating a particular cubic feet of air. It doesn’t require a huge fire when the size is right.

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Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........

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Re: RE: Trailer Smoker remodel

Postby Draagro » October 7th, 2017, 10:41 am

Rodcrafter wrote:I don’t want to make you do more work but cabinet style doors would make effortless access and I think it would look great too.
Oh and about the big FB it’s about heating a particular cubic feet of air. It doesn’t require a huge fire when the size is right.

Making memories!
Dammit! I love the cabinet style door idea. To far into the cutting now though.

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Re: Trailer Smoker remodel

Postby Draagro » October 7th, 2017, 12:03 pm

Thanks for all the advice. Gonna tweak the dimensions of the FB a bit and probably turn it into some grilling space also. I'm going with two four inch stacks in an effort to even out the flow of heat and smoke. Will post pics of the progress.



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Re: Trailer Smoker remodel

Postby Draagro » October 7th, 2017, 12:10 pm

One more question. I see the intake size for the FB, but what about the size of the opening from the FB into the CC?



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Re: Trailer Smoker remodel

Postby Big T » October 7th, 2017, 5:31 pm

435.48 square inches, it's the very bottom box on the right side of the calculator.


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Re: Trailer Smoker remodel

Postby Draagro » October 7th, 2017, 5:34 pm

Thank you.



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Re: Trailer Smoker remodel

Postby Draagro » October 9th, 2017, 11:37 am

OK, I have a few more questions to clarify the throat opening. I've attached a clip of what the feldon's calc recommends. I tweaked the FB dimensions a bit to 42x42x31 for a little more ground clearance on the trailer. If I have a a two inch grease dam at the bottom, How much wider should the throat opening be? Also, should I put a few inches of plate extending into the cook chamber at the top of the throat opening?

Capture.PNG


Also going with my two 4" stacks, they will come out an inch or two from the CC before going vertical. Should those inches be included in the total length of the stack or should it just be the vertical length.

Hope this all makes sense......
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Re: Trailer Smoker remodel

Postby Big T » October 9th, 2017, 7:43 pm

I can't really help you on the half moon opening as I use a trapezoid or rectangle. There's a throat calculator at the top of the page with the smoker builder calculators that should be able to help you out. I would extend the top of the throat out to try to avoid an extreme hotspot, some guys use tuning plates to adjust the temp zones in the CC. On the stack only the vertical part is measured, don't include the 90 or manifold where it leaves the CC.


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Re: Trailer Smoker remodel

Postby Draagro » October 9th, 2017, 8:30 pm

Thank you. All immense help.

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Re: Trailer Smoker remodel

Postby Big T » October 9th, 2017, 8:37 pm

:beer:


Measure Twice.....Cut Three Times.

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Re: Trailer Smoker remodel

Postby mp4 » October 9th, 2017, 9:16 pm

General rule is to only count the stack volume above the cook chamber.



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Re: Trailer Smoker remodel

Postby Rodcrafter » October 10th, 2017, 7:38 am

:yth:


Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........

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Re: Trailer Smoker remodel

Postby Draagro » October 15th, 2017, 2:49 am

Getting a bit twitchy. My welder is out of town for 10 days so no progress. Guess it's a good time to check and double check my numbers.

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Re: Trailer Smoker remodel

Postby Rodcrafter » October 17th, 2017, 5:40 pm

Bummer


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Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........

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Re: Trailer Smoker remodel

Postby Draagro » October 24th, 2017, 3:43 pm

OK, so my welder is back and ready to go. I'm trying to refine my numbers in the calculator. I've attached the new numbers. Not much in there has changed, but would you guys look them over and see that everything looks OK. The other part that I'm still unclear on is the throat opening. With what the calc says I'm thinking of a 23.25" X 18 throat opening with a 4" deep plate angled at about 30 degrees extending into the CC to deflect a bit of heat entering the CC. Then a 14" X 11.5" FB intake with a slide door to choke it if needed.

Oh, I'm also using two 4" stacks at the bottom grate level instead of one 8" stack in an effort to even out the airflow across the width of the CC.

What say you!!??
Trailer Smoker pit calc results #2.pdf
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Re: Trailer Smoker remodel

Postby Big T » October 26th, 2017, 7:38 pm

The only thing that jumps out at me is the twin stacks at grate level. If they are mounted that low and are only 25.5'' long, will they be taller than the top of the CC ? If they aren't above the CC they may not draft properly but I can't say that for sure. I've seen angled plates at the throat, you just have to make sure that it doesn't choke the throat down smaller than recommended.


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Re: RE: Re: Trailer Smoker remodel

Postby Draagro » October 26th, 2017, 8:01 pm

Big T wrote:The only thing that jumps out at me is the twin stacks at grate level. If they are mounted that low and are only 25.5'' long, will they be taller than the top of the CC ? If they aren't above the CC they may not draft properly but I can't say that for sure. I've seen angled plates at the throat, you just have to make sure that it doesn't choke the throat down smaller than recommended.
No, will be two 4" at 51.8. So same volume
And I think the deflection plate will be fine, but I could open the throat by a half inch.

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