Lots of questions about our new smoker

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kayhold

Newbie
Original poster
Nov 28, 2012
17
10
Husbands parents gave him a Char-broil vertical smoker for his birthday (CB600X)

The few reviews I can find about this smoker are either really good, or have the same complaint- temperature control.

We've had a few great smokes - ribs, chickens, pulled pork (butt), turkey legs (one ended badly - we over brined them though)

While we've managed ok, the issue is getting the smoker hot enough and keeping it there.

We quickly found out running it without water in the pan helped, but even on high, we barely keep it at 200-225.

The water/chip pan- it takes up the entire bottom and I think its blocking heat. 

I went to Home Depot and bought the metal mesh, had the husband cut it at work and I made a box and filled it with lava rocks. I'm doing a dry run now, no water. On low, its maintaining 275 degrees.

This is too hot - Do I assume a temp drop of about 25 degrees when food is added? If it's too low with water in the pan, and too high with rocks, how do I find a middle ground? Water pan on bottom shelf?

For the rest of the days runs, how would you suggest I proceed? 

I plan to crank it to medium, test temp, then high, test temps.

Then add a glass pan of water to bottom shelf, do temp checks at low, medium and high.

After I get done, I'm going to do an entire second run the same way, but adding a hot water blanket to the mix.

Any other suggestions? Or is this all useless on an empty smoker?

I am testing the temp with 2 different thermometers - I'm using an oven thermometer that is laying on a rack, so I can see it through the top, and I'm using my probe thermometer which is tested and correct, but the probe is just hanging there next to a rack - not sure if its accurate since its supposed to be used for internal temps of meat. They are a few inches away from each other and about 10 degrees difference between the 2.

This thread has some photos.

http://www.smokingmeatforums.com/t/128678/need-help

The grate I made:

 
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About 45 minutes ago, I added water in a glass pan on the bottom shelf. The temp dropped to 150 when I opened the door, and hasn't gone above 200 - its been 200 for 20ish minutes.
 
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One question I have to ask just to be sure it is all set right is if the valve on the gas bottle is open all the way and the upper vents are closed.  I know, but we have to establish this right off so that if we eliminate the simple then we can look at the more complex.

In looking at the basic design, I do agree that the water/wood pan is way to close to the burner and it just doesn't look like there is enough room to allow the heat to rise up through the box.  With that pan in place is there any gap at the front or back that would allow the heat to rise or does it pretty well close up the box above the burner?  I'm thinking there might be a way to fix this if that's the problem.  With a burner that is rated at 16.5k BTU (1k BTUs higher than my Masterbuilt gasser) I don't think that's the issue.

Mac
 
Hi -

everything we've read says to keep the top vents open. There are no side or bottom vents, just the top one.

The tank is fully open, and we've double checked the safety isn't tripped.

There is no gap at all with the original pan. There is NOW that I am using the box I made out of expanded metal, and using lava rocks. I can take a picture if it will help.
 
Pictures are always a good thing for people like me!  My MB gas smoker also has a vent on the top and I have opened it once and when the temp dropped too low for me I closed it and have never opened it again!  That might be the issue at hand here.  With the top opened the heat is allowed to just rise on up out of there.  Close it and see how well it does after that!
 
 
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Also, with the water pan, on high, its holding about 225.

I took the water pan out just now, to see if the temps go way up.

This is the grate I made for the lava rocks. 

 
Thanks, will try that after I give it a half hour to see if removing the water pan helps, but being new to this, we feel much more comfortable with water in there.

I added a picture to the first post of the grate.
 
I know this is all over the place, but I added the water pan back in, and closed the vents.

With no water, on high, temps jumped to 325.

From here on out, I will do all my testing with the water pan on the bottom shelf (today anyway) because as I said before, we just feel more comfortable with it so I might as well figure out how to make it work with the water in there instead of constantly opening the door to take it out or put it in and then wait for recovery.. So now my goal is to raise temps, with the grate, lava rocks, water, and now the closed vent.

As I said, I have the vent closed now, so in about 20 I will check the temps. Then, I will turn to low, give it 20, check temps.

If needed, I will add the blanket and go from there.

If it matters, its about 54 degrees in Atlanta today.
 
Sounds good! 

I have to say, that smoker with that burner should be capable of what I can do with mine like what you see here.  It was about 28 degrees with snow falling and I was able to perfectly smoke some ribs with nothing more than a piece of plywood to block the wind.

 
The walls are pretty thin on it, so I have a feeling the blanket is going to be a big help, but if I can get away with not using it, I'd return it and get my $30 back.

How much can I reasonably expect the temperature to drop once I add meat?

Should I be doing the dry runs with chips smoking, or does it not add heat?
 
Adding the wood chips/chunks won't affect the heat much at all unless they combust.  Any time you open the door (like to add the meat, the smoker will lose heat.  How much will, of course, depend on how long the door is open and how cold it is outside.  Again, for me, with a single door, the temp drops whenever I add wood or water or spritz the meat.  Normally it recovers pretty fast.  If I recall, the steel on your unit and mine are pretty close to the same thickness so if I can operate mine in the snow you should be able to as well once you get the heat thing figured out.
 
Thanks! What I meant by temp drop was, I assume added mass would affect the temperature.

I left it on medium for about an hour, and it stayed about 250, which is a lot better than when we used the pan and were getting 200 on high. I just turned it to low, to see where the temps go with the vent closed, then I will open it up and keep it on low.

I'm thinking I may not even bother with the blanket, but might keep it around until the weekend when we try this brisket (and hopefully dont screw up) which is a whole other post :)
 
Sorry for another post - I'm mainly documenting this for anyone else having this same issue with this smoker (and I've seen it a lot)

This is the spreadsheet I kept of temperatures while I did my testing.

I did a second run without the blanket and got the same results as the first run.

 
I have used my Inlaws Char-Broil vertical Propane a few times.  It has no problem running real hot with water in the stock pan.  I have to turn it between high & off to get temp down to 225F.  At this point I block the wind off from the bottom of the smoker because a gust can blow the flame out.  If the water pan runs dry the temp spikes to about 350F.

Run a pipe cleaner through the burner to clean out any spider webs & make sure the flame is running blue.

Add hot water to the pan when it needs water.  This helps prevent the temp. fluctuations.  I keep a full pot on the grate above the top vent.  It helps keep rain & crap out, plus it heats the water up while I try to get an hours sleep.

Don
 
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