I can speak for an unmodified Kaldi wide - I've done a couple roasts on mine and I'm enjoying the results every bit as much as dominico. No Artisan for me so I have to give a little more credit to the Kaldi. I'm getting some of the best espresso in 3 years of home roasting!

Cool! I have no doubt the Kaldi is a great roaster in its own right, nor am I trying to take credit from it; I'm simply stating my roasts have greatly improved since my new setup and the Kaldi is a major component in it. It certainly is a very well built roaster.

I sure hope some of that espresso made it into my box... it looks so even. I think you may have cracked the cheap, profiling roaster open.

I am a new owner of Kaldi roaster, just roasted first batches in my life.
The results truly amazed me.
I'm going to place one termocouple in the drum to measure the temperature more accurately than stock thermometer, and that's it. Don't think that anything more is necessary here.
For photos of my Kaldi and first roasts, see here:
http://forum.wszystkookawie.pl/index.ph ... 8#msg74988

https://m.youtube.com/watch?feature=sha ... OcSIkLloRQ

Maybe the best coffee video I've seen since the Matt Perger/ Frank Ocean v60 vid. And relevant to the air flow discussion.