MMMM.. BRISKET..
The BBQ BRETHREN FORUMS.  



Our Homepage Donation to Forum Overhead Recipes Smoke Signals Magazine Welocme Merchandise Associations Purchase Subscription Amazon Affiliate
Go Back   The BBQ BRETHREN FORUMS. > Discussion Area > Q-talk

Notices

Q-talk *ON TOPIC ONLY* QUALITY ON TOPIC discussion of Backyard BBQ, grilling, equipment and outdoor cookin' . ** Other cooking techniques are welcomed for when your cookin' in the kitchen. Post your hints, tips, tricks & techniques, success, failures, but stay on topic and watch for that hijacking.


Reply
 
Thread Tools
Old 04-05-2018, 08:59 PM   #1
KenC52
Got Wood.

 
KenC52's Avatar
 
Join Date: 04-15-14
Location: Pittsburg Texas
Name/Nickname : KenC
Default Temperature Variation

Just ran an experiment with my new Inkbird 6 probe wireless thermometer. Put each probe on a different shelf of my Oklahoma Joe Bandera and then dropped a full chimney of lit charcoal in the fire box. Wanting to see how much difference there was in the temperature in the cooking chamber, top to bottom. Interesting results. As the temperature was rising the top level (about 2 inches from the top exhaust) was running 30 to 40 degrees above the bottom probe, which was sitting just above the empty water pan (left it in empty as a heat diffuser). Didn't expect that much difference in such a small confined area. As the temps began to level out the differences also narrowed, but the top was always at least 20 degrees hotter than the bottom. And the change was not as evenly distributed as I would have expected. The bottom three probes were usually 5 to 10 degrees apart, top to bottom. Meanwhile the top two were substantially higher, usually 15 or more degrees above the hottest of the bottom three. Also discovered that the thermometer in the door was pretty accurate, usually within 5 to 8 degrees of the digital thermometer at the same level. If this experiment is "normal" I can assume that the temps above the included thermometer will run 10 to 15 degrees above it, while the area below the in door thermometer will run 8 to 10 degrees below.*

Also one of the 6 channels on the unit malfunctioned. It read 210 degrees on the back porch! The other 5 read 47 to 50 degrees! I am returning it to Amazon for a refund and will either purchase another one (maybe just got a bad unit?) or perhaps their 4 probe, rechargeable, unit. Since channel 2 did not work there was a larger distance between 1 and 3 than between any of the other operational probes. That accounted for some of the large difference between the top 2 probes and the bottom 3. But the difference was still larger than I would have expected.*

While I always cook to a specific internal meat temperature, knowing this about my cooker will help me plan how much and how often to add fuel and how to plan a cook better. Still love the Bandera.
Attached Images
File Type: jpg 18-04-05 Smoker Temp Test 1.jpg (27.6 KB, 174 views)
File Type: jpg 18-04-05 Smoker Temp Test 3.jpg (70.6 KB, 176 views)
KenC52 is offline   Reply With Quote




Old 04-05-2018, 11:23 PM   #2
Czarbecue
Babbling Farker

 
Czarbecue's Avatar
 
Join Date: 06-24-17
Location: Monroe, GA
Name/Nickname : Viet King Cong
Default

The stock exhaust on the Bandera is pretty short and may be causing the hot spot at the top. I took mine off and welded a 5"x5"x12" tube to replace the original.
__________________
Boathouse Smokers Big Black Cabinet
Weber Ranch Kettle
Pit Boss Vertical Smoker
Tejas Smokers Triple Burner Hot Plate
Roccbox Pizza Oven
Blackstone 17" Griddle
Czarbecue is offline   Reply With Quote


Old 04-05-2018, 11:29 PM   #3
sudsandswine
Babbling Farker

 
sudsandswine's Avatar
 
Join Date: 06-23-12
Location: Kansas City
Default

Out of curiosity, did you try swapping probes from a working port to the one that was malfunctioning? I've had thermos do that before but it was most often the probe.
__________________
Shirley Fabrication 24x60 | Primo XL kamado | Red Weber Limited Edition kettle | Mak 2 Star | Blackstone 36" griddle | Weber Ranch kettle
sudsandswine is offline   Reply With Quote


Old 04-06-2018, 10:14 AM   #4
sarth67
On the road to being a farker
 
Join Date: 02-17-18
Location: Perdido Beach Al
Name/Nickname : Sarth67
Default

A water pan in the bottom should help keep some heat down low.
sarth67 is offline   Reply With Quote


Old 04-06-2018, 10:19 AM   #5
mstewart39
Full Fledged Farker
 
Join Date: 08-16-17
Location: York, PA
Default

I have the inkbird. Unfortunately you need to have very good, brand new batteries in it for the probes to all work.
I had the same issue. My first one I returned because of that issue. My second one still does this occasionally, and that's when I realize I need new batteries. (And then I use the "old" batteries in something else because they have plenty of life in them.)
__________________
Kamado Joe Big Joe, 14" WSM, 22" Weber Kettle, Akorn Kamado, and now a OKJ Bandera!!
mstewart39 is offline   Reply With Quote


Old 04-06-2018, 10:21 AM   #6
ebijack
Babbling Farker

 
ebijack's Avatar
 
Join Date: 08-23-13
Location: Detroit Mi
Name/Nickname : tom
Default

When you load that thing up. You will see where the heat/hot spots are. Also depending how you load the grates with different meats. Will also change the hot spots.
Like mentioned, a bit taller exh would help draw more. Again changing the hot spots.
ebijack is online now   Reply With Quote


Old 04-06-2018, 11:24 AM   #7
KenC52
Got Wood.

 
KenC52's Avatar
 
Join Date: 04-15-14
Location: Pittsburg Texas
Name/Nickname : KenC
Default Answers

I have a 40" extension on the little smoke stack that came on the bandera. I have a discussion of the mods I made to it elsewhere in this forum.

https://www.bbq-brethren.com/forum/s...d.php?t=257001

Also I did test three of the probes in the number 2 channel port and all read the same 210 degree error.

The batteries were brand new Duracell

Plan to run the test again tomorrow or Monday with the water pan filled to see how if that makes any difference in the degree of variation (I know it will affect the overall temperatures).
KenC52 is offline   Reply With Quote


Old 04-11-2018, 02:48 PM   #8
KenC52
Got Wood.

 
KenC52's Avatar
 
Join Date: 04-15-14
Location: Pittsburg Texas
Name/Nickname : KenC
Default

OK here are the results of the new test of Temperature Variations of Bandera with Full Water Pan. My wife noted that the temps "settled down" after about the first hour and that she had noticed that on all the shows of "Man, Fire, Food" as well as Aaron Franklin's videos that they built their fire and THEN went and prepped the meat, giving the cooker time to warm up and settle in. Probe 1 and 2 were above the thermometer in the door and probes 3 and 4 were below it (thus the order). Not sure why the web interpreted the spaces in the spreadsheet as asterix(sp).

Time* * * * *Probe 1* *Probe 2* * Door* * Probe 3* * * Probe 4
3:45 PM* * *109* * * * *108* * * * * * * * * * *102* * * * * *181
3:56 PM* * *117* * * * *107* * * * * * * * * * *106* * * * * *205
4:00 PM* * *178* * * * *171* * * * *150* * * *163* * * * * *286
4;15 PM* * *237* * * * *214* * * * *190* * * *311* * * * * *316
4:30 PM* * *241* * * * *223* * * * *200* * * *313* * * * * *302 Added a hickory log
4:55 PM* * *239* * * * *239* * * * *218* * * *237* * * * * *235 Added charcoal
5:15 PM* * *270* * * * *266* * * * *262* * * *255* * * * * *253
5:30 PM* * *264* * * * *270* * * * *262* * * *255* * * * * *253
5:45 PM* * *255* * * * *261* * * * *240* * * *250* * * * * *250
6:00 PM* * *198* * * * *199* * * * *198* * * *199* * * * * *203
6:15 PM* * *180* * * * *181* * * * *180* * * *183* * * * * *183
6:30 AM* * *163* * * * *163* * * * * * * * * * *165* * * * * *167 Stirred the charcoal
6:55 PM* * *167* * * * *171* * * * * * * * * * *172* * * * * * 167
KenC52 is offline   Reply With Quote


Old 04-11-2018, 04:18 PM   #9
Titch
somebody shut me the fark up.

 
Titch's Avatar
 
Join Date: 11-17-12
Location: South East Victoria Australia
Name/Nickname : Titch :-)
Default

Quote:
Originally Posted by mstewart39 View Post
I have the inkbird. Unfortunately you need to have very good, brand new batteries in it for the probes to all work.
I had the same issue. My first one I returned because of that issue. My second one still does this occasionally, and that's when I realize I need new batteries. (And then I use the "old" batteries in something else because they have plenty of life in them.)
I have found this as well
I remove the batteries after use now as it seems to reset the unit.
__________________
Unofficial Vegemite Sponsor.

Don't send the Foster's, it's a Federal crime(IamMadMan)

Join us for a Laugh.
http://www.bbq-brethren.com/forum/forumdisplay.php?f=7
Titch is offline   Reply With Quote


Reply

Tags
bandera, Inkbird, temperature difference, temperature variation

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Forum Custom Search: Enter your Search text below. GOOGLE will search ONLY the BBQ Brethren Forum.
Custom search MAY not work(no display box) in some configurations of Internet Explorer. Please use compliant version of Firefox or Chrome.







All times are GMT -5. The time now is 11:24 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
2003 -2012 © BBQ-Brethren Inc. All rights reserved. All Content and Flaming Pig Logo are registered and protected under U.S and International Copyright and Trademarks. Content Within this Website Is Property of BBQ Brethren Inc. Reproduction or alteration is strictly prohibited.
no new posts