Okay heres an update. The measurements look fine to me. I measured about 20 times. I think my smoker is fine. One restriction I found was the hole cut in the side of the tank where the collector is welded on. There was some metal in that openining, a lip, I was able to take out to the welds/
So...I did another test run last night. I think its simple. My smoke is "streaming" out of the top of the pipe, judging how the smoke has a nice velocity leaving the pipe, visually the flow of smoke looks good. It doesnt peter out of the top of the stock, a solid nice column of light smoke is evenly flowing out of the top. Its moving air. I sealed the door by wedging a board against it, forcing it more closed. very little smoke is leaking out of this smoker.
Im new to these smokers, is it user error? Do I just need more fuel / heat?
I "think" I just need more fuel. Here is what I did
1. preheated a chimney starter of charcoal.
2. Once hot, dumped it into the smoker.
3. Then threw in an unsplit small 2.5" stick and closed the door. Opened vents all the way.
4. Took about 30 minutes, but it got to 200 then stopped climbing.
5. Tried craking the door a little...didnt make a ton of difference. The stick ignited. Temps rose to about 250. Closed the door.
6. Had to go in for dinner / get kiddo in bed. Decided F'it and threw in a larger split and another smaller stick, push the coals a bit more towards the CC. More or less trying to fill the chamber. Went inside.
7. About an hour later, checked on smoker. It was around 350.
8 . Closed it off a little. Temps started to lower.
Is it possible it needs more fuel? For this size chamber do I need to load the tray with coal and dump the chimney of coal on top along with wood?