need ideas about my new pit

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SITNFAT
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need ideas about my new pit

Postby SITNFAT » Tue Sep 08, 2009 11:45 am

Ok I finally got a 250 propane tank last week it has been empty for years but I am still letting it sit filled with water for a few weeks before i carry it to the welders shop to get the doors cut into it. I want 2 nice size doors with two levels of slide out shelves. about how big does my fire box need to be i will be hanging it off the end and I use hickory if that matters. I also want some type of warming box but dont want to use propane unless absolutly nessascary any pics and tips would be greatly appreciated. Oh and i think I got a real deal on this tank the guy was asking 50 bucks for it and I talked him down to 20 he even helped load it :)
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Re: need ideas about my new pit

Postby Big Ed » Tue Sep 08, 2009 11:53 am

Yeah,you stole that tank.Good score.
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Re: need ideas about my new pit

Postby FR8 Train » Tue Sep 08, 2009 12:55 pm

I have a thread called "New Pit build" where we use a couple 250 gallon tanks. It has plenty of pics. Check it.
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Re: need ideas about my new pit

Postby SITNFAT » Tue Sep 08, 2009 1:36 pm

How big is the fire box? depth, width, hieght?
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Re: need ideas about my new pit

Postby Pony Express » Tue Sep 08, 2009 1:44 pm

heck of deal on the tank.
Cut your doors down passed center if you want 2 cooking levels.
I stoped mine at the center line and only had 13 inches verticle, not enough height for 2 levels in my opinion.
You will get lots of answers on fire box size. One guy thinks that the most common mistake most people make a fire box thats too large, others say you need a large fire box. Havent fired mine up yet so I cant say for sure. My fire box is a 20 inch pipe that is 24 inches long. Brushcountry has a pit almost identicle to mine and he says that is works very good and temps are withen 7 degrees 1 end to the other, no baffels!
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Re: need ideas about my new pit

Postby JamesB » Tue Sep 08, 2009 2:47 pm

Up to a point, I prefer a firebox that is the same as the diameter of the tank... In other words, if the tank is 30" diameter, build a 30" x 30" firebox...
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Re: need ideas about my new pit

Postby BAR "G" BBQ » Tue Sep 08, 2009 2:55 pm

I build my fire boxes 24" x 24" x 30" X 1/2" thick; 1/2" may sound like overkill but they don't warp and will last a lifetime. I like the extra depth of a 30" fire box in regards to hot embers falling out as well as being able to utilize 24" - 28" wood. I have used this size box on pits 24" x 60" up to pits 30" x 96" with no problems or complaints.
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Re: need ideas about my new pit

Postby jlabolt » Tue Sep 08, 2009 5:29 pm

I have a build thread utilizing a 250 gal. tank on here with lots of pics as well. My firebox is 24" x 24" x 30", but i think it could have been 26" or 28" deep. I cut my doors just past center, so that my bottom grate would be right at the center. My second grate is 6" above that. If doing it again I might move the second grate up an inch or two.
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Re: need ideas about my new pit

Postby SITNFAT » Tue Sep 08, 2009 5:51 pm

jlabolt do you have a link to your build
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Re: need ideas about my new pit

Postby JamesB » Tue Sep 08, 2009 6:08 pm

SITNFAT wrote:jlabolt do you have a link to your build


Try this one
viewtopic.php?f=4&t=6747
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Re: need ideas about my new pit

Postby OSD » Tue Sep 08, 2009 6:09 pm

Search feature is your friend when looking for older threads. :D

Here's the thread........

viewtopic.php?f=4&t=6747&start=0" target="_blank
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Re: need ideas about my new pit

Postby jlabolt » Tue Sep 08, 2009 7:30 pm

Thanks James and Jim for the link.

SITNFAT I don't think I included alot of my measurements in the thread but I'll be willing to share them with you if you run across anymore issues. Just let me know
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Re: need ideas about my new pit

Postby SITNFAT » Tue Sep 08, 2009 7:44 pm

that box is huge do you burn alot of wood? how hot are the temps in the tank?
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Re: need ideas about my new pit

Postby jlabolt » Tue Sep 08, 2009 8:41 pm

I wouldn't say I burn any more wood than any other reverse flow of a similar size. Although, I've only spoken to a few people about wood consumption. I just used the "same size as the cooker" rule of thumb, but like I said a little smaller might not hurt. The smaller you go the closer the flames are going to be to the tuning plate or reverse flow plate, which could cause you trouble. I think if I was closer to the bottom of my plate, I'd have trouble leveling out the temp on that end with the rest of the smoker. A thicker plate or air baffle between two plates may solve that. Are you going with a reverse flow or traditional offset design? As far as temps go, I smoke in the same range as many resting somewhere in the 225* area. Although I've held it around 300* for chicken and other things. When I first burn it in I saw 475* on the handy oven therms I had inside at the time. Sure I wouldn't have had any trouble going higher, but what's the need. She holds steady with under a 10* variance at every temp I've had it.
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Re: need ideas about my new pit

Postby Bluz » Tue Sep 08, 2009 10:27 pm

I have a 30x36x78 main cooking chamber, with a 30x30x48H upright, and a 30x30x24h firebox. For about a 12 hr brisket,or Butt cook I use around 15 sticks of split hickory and 18 lbs charcoal, and for ribs it 6 sticks of wood and 18 lbs of charcoal. The charcoal is only for the starting of the pit, and good coals to add wood to. The remainder of my cooks are mainly wood only. I cook and hold 225-250 for all my cooks, except for chicken. I have a variance of 3-5 degrees for the main chanber with about 15-20 degrees higher at the turn if I am cooking reverse, but with offset, same on all temps with a 30 degree less in upright, if baffles are wide open.
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