I'm sold on the little plasma.
I cut the damper holes from firebox to smoke chamber. This plasma doesn't have a high freq. so it has to touch metal. It doesn't blast that little arc out the end when it's not in contact with the cutting surface. I'm used to the other kind. We have that at work.
After smoking 16 turkeys I'm a believer in the center fired RF. 6 were 20 lbs. 4 or 5 were about 14 to 16 lbs. and the rest were 10 to 12 lbs. I positioned the large birds in the middle, the medium on the right side and the smaller on the left. The quirks of the Dragon's Breath brought all the birds done at the same time. I'm new at this but we pulled them all out after 5 hours.
I believe the analog temp probes an the front are 20 to 30 degrees below actual. I kept the temp between 230 and 245 the whole smoke time, center temp probe.
I think that's why they finished so soon. Most of the smaller birds had pop ups which I left in and I put an external digital in the biggest bird. They were all pulled when the digital hit 171 and let rest for 1 hour. We had to save 4 of the smallest birds for the deep fryer. Total 20 birds! They all came out juicy and smokey flavored.
Dave Omak I wanted to ask you, what size should the firebox be? The tank is 300 gal. 30" O.D. 117" O.S. After my experiences with the last one I found I would like to fudge the size to the large end. Do you think I will gain enough cooking time to justify a slightly larger fire box? I ordered 2 sheets of 1/4" plate that will be in this week sometime. Also I have a piece of 6" pipe for the chimney. What length do you think is optimum? I'm going to put a tangital entrance at center of tank like I did on my first one. Thanks. I see that you are always helping out on the forum and I value you input.