Haven't seen it posted so i'll ask.
Just out of curiosity, what's the largest intake people have used successfully? I am in the process of building my first UDS and to help keep costs down, i'm doing everything I can to use recycled stuff and tools from friends that I need for drilling. The tool I have for drilling the intake holes isn't 1" like I would want, but 1-1/4" so i'm trying to figure out if I should just go with three intake holes or still drill four. I'm using the standard 2" bung hole on the top with a 6" aluminum tubing JB welded to the top since I don't ever see my cooker pushing more than 250. Great forums and information ya'll got here. I've learned sooooo much after reading the UDS posting that I had to buy two reconditioned drums so I could start the project.
Kenmore 4 Burner Gasser, 7xUDS up and SMOKING!