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newb 1st post
Hi - I've been roasting a few months with a Victorio pop corn maker with results I think are great and sometimes spectacular. I was wondering if when aiming for city to city + does 1st crack completely conclude? Should I wait until the roast goes silent and there’s no popping? Sometimes I’m wondering if I’m over roasting a bit, the pops sort of change into quieter rice crispy pops without a pause between 1st and 2nd - I think I’m hitting 2nd crack sometimes by accident. Should I lower the heat a bit? If I stop while I can still hear a few 1st crack pops am I under roasting if shooting for city or city +. Watching it with an infrared I’m starting about 350 and depending on the bean hitting 1st crack in the 400 to 415 range.
Welcome !

Do you somehow monitor beans temperature ?
If true, then for city I would try to drop beans about 2 minutes after FC start, AND... control power to have about 10 C increase during these 2 minutes.
So if FC start at 200 C, and at FC+2 minutes you have 210 C, you are good to drop for city.
Transition from city to city+ is somewhere between 215-220 C, but be prepared to drop any moment if hearing first SC sound.
If FC ends faster than 2 minutes, then you entered FC with too much temperature increase speed. The rate of rise before FC should not exceed 7 C degrees, so 193 C beans temp at FC - 1 minutes.
I go by sound mostly and just check with an infrared to see what I can learn and remember. It sounds like i'm getting the roast just a bit too hot.

If first crack seems to blur directly into 2nd crack I guess that just confirms I'm a little too hot. It happens occasionally, I'm being a little inconsistent experimenting and trying to judge the beans.
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