Yes, still struggling with FCMA syndrome!
The FC of my second seasoning roast was even more equivocal than the first seasoning roast. With these seasoning roasts, not intended for consumption, I’m roasting well past second crack - way more than I ever would for myself. Just coaxing out the oils to season the drum. It kind of hurts me to roast a bean this much - feels like looking at (most of) the beans for sale at Peet’s of Starbucks!
Next to try before buying an amplifier is a stethoscope. I really do want to preserve the tryer to look at the beans (at least for now - this desire is likely to fade with experience). Perhaps I can rig up something in the bean chute plug area?
Following trying a stethoscope, unless marvelously successful, I’ll go to an amplifier and acoustical analysis software.
Questions - what temperature range is classical for FC? SC?
What about the interval between yellowing and FC?
What to do if FC is equivocal? Use a temp range to say it must have occurred by XX, if I’m unsure ?