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2nd gen Masterbuilt PID questions - Page 2

post #21 of 23

 

 

 

Quote:
Originally Posted by johnnyb54 View Post

[/quote]
I just finished running the test on the Masterbuilt. Like I mentioned in a previous post I removed the slant plate and only kept the shroud on the heater. You only did part of what I said. You didn't put the Foil Pan on the center of the bottom rack. You left the whole smoker empty so heat doesn't get any interference in rising. This was not to reduce the Temp Swing. This was to balance the Heat from left to right.
I set the temp for 150 and monitored the heat. The results were similar with the plate in, in fact the results might be a little worse. With the temp set at 150 my high temp was 176 and the low was 146 (the Masterbuilt ran for 2 hrs). The swing is 30 deg. where before it was around 25. I realize that if I want the average to be 150 I would lower the set temp to 135 but when I'm trying to finish smoked sausage at 155 it's a real pain with the temp swing. I need to bump the temp up for the sausage to reach the required 155 but when I do that I risk melting the fat. If I was only doing brisket, pulled pork or chicken I don't think the swing would be any issue but I cook those on my charcoal smokers and only use the Masterbuilt for sausage, jerky and bacon. The removing the Slanted plate wasn't to reduce the Temp Swings. The Temp Swings are reduced by using my Method explain at the Link I provided earlier.

I explain my method of reducing that problem in the following Thread at this Link:

http://www.smokingmeatforums.com/t/208552/avoid-temp-swings-in-mes-by-bear

 

 

Bear

 

post #22 of 23
Thread Starter 
Bear, the reason I didn't do the pan is I'm trying to eliminate the temp swing not eliminate hot spots. I will definitely try the pan once I figure what I'm going to change to a PID or not. Right now the PID is looking better and better. I did exactly what your temp swing post said but my swing was still 30 after 2 hrs. of running. I did bring the temp up like you said and let it settle in but still no joy with the swing. I've been smoking with charcoal on my Big Green Eggs for 13 years so I know the importance of controlling temp. The controller on your smoker and others may have tighter settings then mine. Maybe my gen 2 controller is the problem but it's definitely not user error.
post #23 of 23
Quote:
Originally Posted by johnnyb54 View Post

Bear, the reason I didn't do the pan is I'm trying to eliminate the temp swing not eliminate hot spots. I will definitely try the pan once I figure what I'm going to change to a PID or not. Right now the PID is looking better and better. I did exactly what your temp swing post said but my swing was still 30 after 2 hrs. of running. I did bring the temp up like you said and let it settle in but still no joy with the swing. I've been smoking with charcoal on my Big Green Eggs for 13 years so I know the importance of controlling temp. The controller on your smoker and others may have tighter settings then mine. Maybe my gen 2 controller is the problem but it's definitely not user error.


If you follow that method I described at that link, you shouldn't have 30° swings.

 

Example Again:

Let's say you want a 230° smoker.

Turn it on & set it for 210°.

If it coasts to 235°, after shutting off at 210°, move your setting to 230°.

Now since it won't have to drop more than 5° before it comes on again, it won't fall far below 230, before it begins to rise again.

And then since it won't have far to go before it shuts off again at 230°, it won't coast far above 230° before it begins to fall again.

 

Once you understand & learn this method, you'll know where to reset your control when your initial start-up peaks out at other Temps.

 

The Pan isn't only for "Hot Spots";

Not putting the pan in like I said, can have an effect on the swings too, because the pan isn't there to slow the heat down on it's way up through the Smoker

 

Your Up Swings happen after the Heating element shuts off, and your Down Swings happen after the element comes back on.

Therefore the Swings aren't caused by the Controller.

 

Once you learn to turn the big swings into small swings, by using my method, you'll only have small swings, and they won't hurt anything.

 

I can get mine down to Swings of 2° to 8° in a very short time, unless it's Windy, and I don't have a Wind Block up.

 

Bear

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