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Q-talk *ON TOPIC ONLY* QUALITY ON TOPIC discussion of Backyard BBQ, grilling, Equipment and just outdoor cookin' in general, hints, tips, tricks & techniques, success, failures... but stay on topic. And watch for that hijacking.


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Unread 12-29-2011, 09:17 AM   #16
Triple T BBQ
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Thanks everyone. Its been a bit of work collecting things so far, but the deals are out there if you wait and are patient. I finished tearing down the trailer last night and checking things out.

* The left wheel bearings are shot as suspected and the tires are dot dated from 1990 which means they are original. Yikes. Already planned on replacing them so no worries there. In fact, I have a set of older aftermarket aluminum jeep rims that have been sitting around the shop for ten plus years that may fit. The brakes on the trailer were originally hydraulic based and totally trashed. I am just going to refit them with new disk brakes from my northern tool dealer. Found them on sale this week for 100 bucks off per side!!

* Pulled the stove into the shop and its going to take min amount of work to modify it. Pics coming shortly. This is a double walled unit with a blower on the bottom of the unit. Since we are going to dropping this down into the trailer I will either need to loose this fan or move it somewhere else. I am thinking of keeping it so I can use it to move warm arm to the warmer I want to build later on. The heat exchanger vent is on the top so that will get closed off and moved to the right side where the warmer will go eventually. I will just close it off with a plate for now. The rear has the classic 6 inch opening on the rear of the stove but its mounted about 3 inches too low. I am going to move this up and increase the size of the opening.

Was thinking of just picking up a straight piece of chrome stack from my local truck parts guy for the exhaust on the end of the cooker. Something like this. I figured I would just drop a standard stove damper in the top a couple inches down from the top to control the exhaust flow. Thoughts on this and the length? See my calculations below.



Can I get some feedback on the requirements?
My tank is 24x68 and I come up with 10248 for cubic inches. Since I am going to place the fire box inside the tank a bit I came up with 9646 after subtracting the space that the firebox will occupy in the tank.

The fire box comes up as 9504 cubic inches. So I think I am pretty close to the 1/3 rule as far as that goes.

My exhaust calculation comes in at 475 cubic inches and with 5 inch pipe the calculator says 24 inches in length. i figured I would make it 36-48 inches long just to get it up and away from us while running the smoker. Besides whats a little more draw when you need it right? Any concerns here?

The opening from the firebox to the cook chamber needs 76 cubic inches. I was just going to use a 5x16 opening across the top and rear of the box which would put me well over the 76ci I needed.

What are folks recommendations here for some the openings? Better to go larger, smaller or just follow the calculator to the decimal point?

Last edited by Triple T BBQ; 12-29-2011 at 09:36 AM..
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Unread 12-29-2011, 03:59 PM   #17
Triple T BBQ
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Quote:
Originally Posted by morgaj1 View Post
Looking forward to this build. Between you and Ryan (Speers90), you have stoked my inner fire to build my own. I have the welders and a plasma cutter, I just can't find a tank.
I had better luck looking at local auction and steel scraping operations than i did with the propane tank dealers. Even though I know about how to cut up a propane tank, for the size i was looking for, this made perfect sense and again the price was right. Also if you have a trucking salvage yard in your area the air tanks on the 18 wheelers, buses, and other heavy equipment can be picked up pretty cheap too. Found a number of 40-80 gallon units that way.
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Unread 12-30-2011, 09:20 PM   #18
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Subscribed!
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Unread 12-30-2011, 09:39 PM   #19
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This may be the most entertaining project in some time. Thanks for posting.
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Unread 12-30-2011, 09:46 PM   #20
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Quote:
Originally Posted by Triple T BBQ View Post
What are folks recommendations here for some the openings? Better to go larger, smaller or just follow the calculator to the decimal point?
To me it looks like your numbers will work fine. I didn't do any calculations for mine though so you might want to take my word with a grain of salt.
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Unread 12-30-2011, 10:49 PM   #21
Triple T BBQ
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a quick update for everyone. Finished up pulling the misc pieces off the trailer today and found the rims I was looking for in the back of the shop. It looks like they will fit just fine. They were the correct bolt pattern after all. 5 on 4.5 like most trailers. The brakes are on their way and should be in stock with my northern dealer sometime next week. Will hold off on the brake lines until we get the rest of the trailer loaded up and balanced. That way I know how much to take off the front tongue. The disk brakes use a conventional style master cylinder setup for the hitch point, and I don't want to have to do the brake lines in stainless twice.

I am going to pull the front cross bar that attached to the trailer tongue as far forward as possible.
I want to make sure the firrebox does not hang out the back of the trailer rails when done. Snapped a quick picture of the trailer up on the stands with the new/used rims in place.


If the weather holds for tomorrow I will start stripping the tank down and getting the brackets off. This way we can rotate the tank over and put the vents pn the bottom. I am going to use the pipe openings as my drip and drain locations. If this goes well we will start getting the tank mocked up into location with the firebox. Hopefully the rain and snow holds for one more day.
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Unread 12-30-2011, 11:06 PM   #22
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this is awesome!!!! Eagerly awaiting the results. Thanks for posting
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Unread 12-31-2011, 07:45 AM   #23
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I wouldn't worry about controlling the exhaust other then something to block the rain.
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Unread 12-31-2011, 07:56 AM   #24
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This looks like it's going to be an awesome build! Subscribed and waiting for progress!
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Unread 12-31-2011, 09:52 AM   #25
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Lookin' Good!
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Unread 12-31-2011, 10:35 AM   #26
BruceKWHP
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a GREAT way to start the new year, by bringing in a new smoker !

Will it be a reverse flow ?
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Unread 12-31-2011, 10:41 AM   #27
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Looking great
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Unread 01-07-2012, 04:54 PM   #28
Triple T BBQ
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Got the feet off the tank and removed the bungs today. Also got it rotated around so that the 2 inch pipe bungs are on the bottom. I am going to use these for the grease and fat drains. The phone died so I could not get a couple shots of the progress, but will this week. Next up is chopping down the old truck rack I had siting around. Its all 2x2 square tubing. I am going to just use it for cross members on the trailer.

Some pork PRON to hold you over:
Took a break and tossed a couple pork shoulders and some country style ribs on the old smoker.
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Unread 01-07-2012, 05:17 PM   #29
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That is going to be an awesome smoker. Will keep watching and waiting.
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Unread 01-07-2012, 06:19 PM   #30
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I'm really enjoying watching the progress.
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jambo clone, offset smoker, reverse flow horizontal, trailer

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