This is excellent, I was hoping to have a split topic for light roasting on the Bullet. What is more, I am actually in the process of having the same Burundi bean for about the past 3 weeks. I have a 220v V2 Bullet, and these roasts were done without the new fan speed calibration.
Burundi Roast 1 (13% weight loss)https://roast.world/r/3n20s74ejP70ZaiwrbWwy
Notes: Nice sweetness, well developed, slight fruitiness (can't really pinpoint specifically), before roasty finish.
Burundi Roast 2 (12% weight loss)https://roast.world/my/roasts/Isg1KXjZ2Q37p74hK3ltt
Notes: Nice sweetness, well developed, not much fruitiness (can't really pinpoint specifically), more juicy than #1 and with more floral characteristics, before roasty finish.
My first roast was a lot less crashy than the second (I am guessing because i upped fan and dropped power at the same time in the second roast). I do not have much experience cupping, so any scores I give will be relative to some of the best coffee I have had. All of my scores are from using the V60 02. This bean was slightly frustrating because of the roasty finish from both tries. I wish there was a link between VST coffee app or wish Aillio had a similar app that could link your roasts, that would be very cool. I used an EK43s from 9-10.5 with varying extractions from 19-22% and found the roast aftertaste persisted in all extractions. I found the higher extractions around 22% (1.46 TDS I believe) to be the best due to the heavier florals. Even at higher extractions the roastiness didn't increase or decrease much. I'll also add to the delayed 1C question, soaking has a huge impact on time to 1C from what I have seen with my roasts. Pretty much at low power you delay 1C by about how long you soak for.
Sidebar: I do wish that they also included an ET, hopefully a software update in the future will provide it since they have to filter it out of the IRBTS. Also, I wish they would allow some ROR smoothing because it seems to plot at roughly at 3-5 Hz which is a little silly. That and as I said earlier, I wish they had an extraction app or add on where you could select your roast, would be super easy for them to do and provide tons of information.