Would you like the best of both worlds? Would you like an offset that will keep the temp more constant and even rival the consistency of the vertical smokers as well as have that large cooking area if needed? Would you like the temp on one side not be as much as 100 degrees different than the temp on the other side? Would you like the thermometer in the middle of the grill be at least somewhat accurate which is impossible when the thing is assembled out of the box due to the temperature fluctuations from left to right.
With less than $30 in materials you can do all of that. Click below to see how I did it.
The first mod I did to my grill was for the rotisserie attachment that is available for the Chargriller Smoker pro that I have and is in the picture at the top of this post. While the website does not say that the rotisserie really isn't designed for a grill with a fireside box, a couple of quick modifications solved this problem. One thing, you will need a Dremel or some other device that will grind metal. Dremels are not all that expensive and are extremely handy around the house so go get one.
The main problem with the rotisserie and the firebox is that the bracket that holds the rotisserie motor is supposed to go on the side with the firebox. With the firebox attachment there the bracket must go over to the side with the shelf. But the shelf does not leave enough room for the bracket. The shelf has three slats. Removing the slat closest to the grill makes room for the bracket. Makes the shelf a little smaller but you will survive. Here is a shot of my two slat shelf and the bracket in place:
Time to install a baffle between the firebox and the main chamber. The baffle performs two tasks. First it shields the meat closest to the firebox from the direct heat from the fire. Aluminum is not a great conductor of heat and thus it acts as a heat sink between the fire and the meat. To do this I bought a disposable aluminum high sided pan that can be found at any grocery store. The sides are about 4 inches tall. I cut the pan essentially in half at a 45 degree angle. The angle of the cut goes along the bottom of the grill. The sides of the pan cover the hole between the firebox and the main chamber. This does not look pretty, but the inside of a BBQ rarely does if it has been used at all:
Take the two sheets and poke holes in them with a sharp. pointy knife. Here is the underside of one of my cookie sheets. As you can see the smoker gets a lot of work since the cookie sheet has a smoke ring!?!?!
The firebox on this grill does not do a good job of keeping the main chamber hot. See the charcoal essentially sits in it's own ash and chokes the fire out the longer the session. I tried a couple of things that did not work or were dangerous. Finally I bought this at Lowe's:
Now one final mod. In order to keep the smoke from escaping out of the chimney too quickly I have extended the bottom of the chimney down to close to the top of the grill grates/cooking surface. This way the smoke cannot simply rise up and evacuate the chamber. The smoke needs to come back down to find the exit through the chimney and consequently pass over the meat a second time. With this model all I needed was a three inch diameter flexible aluminum duct that cost all of about $8:
I stretched and bent the piece of duct around the raised shelf in the back of the cooking chamber on this model and cut off the the rest of the duct leaving the bottom just about an inch above the top of the grill grates:
Next up: Covering the holes created for the rotiserrie with some sort of flange to seal them when not using the rotisserie:
Also, I may look at going reverse flow and actually moving the chimney to the side closest to the firebox and forcing the smoke to travel the length of the chamber along the bottom and then up and back across the meat. But that is an entirely different animal as it requires a cutting torch and some welding skills two things I do not have. That is for another post if my $30 mods are not enough.
Click here for the rest of the process