I think I am on the right track now with my i-Roast 2, but would like to hear your opinions about my profile and results.
I settled now on a 1,5KOhm resistor (1KOhm was too fast imo and 2,2KOHm too slow and used the following profile:
1) 4min.- 160* 2) 3min. - 180* 3) 2min. - 210* 4) 4min. - 224* 5) 2min. - 240* (all in*C).
I measured the temps with a thermocouple in the bean mass. 1st crack was after around 6.45min. at a temperature of around 208* and 2nd after around 10.45min. at 228*. I stopped at 12.30 when tiny oil drops started to appear. In fact I can skip stage 5 I think.
Of course taste will prove if everything is right, but I would like to hear opnions of fellow roasters.
Ton