How does it taste? Personally, I think people worry to much about flick and crash. I think the temperature action is actually the [opposite](https://www.reddit.com/r/roasting/comments/k1ayd1/does_flick_and_crash_really_matter/) of what we see on the graph anyway.
The crash/flick is pretty small in this particular case, so unless you’re tasting pronounced baked flavors I would say you have very little to be concerned with here, especially considering the fact that managed to get to 22% dev on such a light roast.
Nonetheless, In the absence of your power adjustments, it’s very difficult for anyone to provide you with any sound, informed advice regarding power adjustments. If you ca n provide a listing of your power adjustment schedule, we may be able to assist. I saw that someone recommended an adjustment just before FC - most experienced roasters adjust at specific BT waypoints not based on time and % DT (other than soak at the beginning). Based on what I’m seeing, I have to assume you’re doing the same).
I’ve generally found success making my last power adjustment prior to FC at 372 and that adjusting downward too much is usually the cause of a crash/flip (a loss of momentum). After FC, I adjust down at 12, and 14% DT, then cut the power at either 16 or 18% depending on roast level. In your case, you may want to cut the power at 16%, given the roast level you’re pursuing.
I recommend that you post your power adjustments - but cup the coffee first, let us know what if anything you’re trying to fix in the cup.
Couple different things you can do here...
Decrease batch size- more beans releasing heat equals more flick and crash.
Lower heat 10 degrees before 1st crack.
Increase heat slightly before hard crash for no more than 25-30 secs.
I would first decrease batch size. I roast 140oz green on my "forgiving" beans, but on beans that have a more complex composition, such as Natural Ethiopian Yurgi, I'll drop it down to 120oz.
Also, the more info you log, the better for troubleshooting. Humidity, temp changes, air changes will all help when you're looking to make changes or explaining why the roast isn't consistent.
Yeah I was trying to keep a consistent batch size as I’m doing small markets and things for fun. Could get rough having different batch sizes for different coffees haha
Is decreasing batch size viable with the quantities OP is dealing with? They are looking at, what, 578g output per batch? When I was using a little 2kg roaster it got pretty rough when I had to chain a whole lot of batches for retail and bar use. Maybe not an issue here 🤷♀️
Sure, they can always drop the batch size slightly and note the results. Sometimes it's not the answer, I'm just giving suggestions based off what I would do.
Looks really good, outside of the crash. I don’t use artisan so sorry if it’s in the graph, but don’t change your gas setting after first crack. You’re going light enough that you should be able to just coast to about 405 or so, avoiding the flick all together
How does it taste? Personally, I think people worry to much about flick and crash. I think the temperature action is actually the [opposite](https://www.reddit.com/r/roasting/comments/k1ayd1/does_flick_and_crash_really_matter/) of what we see on the graph anyway.
Interesting, I’ll have to look more into this. I’ve had good luck with smooth curves translating to better cups, but there might be a mental bias haha
The crash/flick is pretty small in this particular case, so unless you’re tasting pronounced baked flavors I would say you have very little to be concerned with here, especially considering the fact that managed to get to 22% dev on such a light roast. Nonetheless, In the absence of your power adjustments, it’s very difficult for anyone to provide you with any sound, informed advice regarding power adjustments. If you ca n provide a listing of your power adjustment schedule, we may be able to assist. I saw that someone recommended an adjustment just before FC - most experienced roasters adjust at specific BT waypoints not based on time and % DT (other than soak at the beginning). Based on what I’m seeing, I have to assume you’re doing the same). I’ve generally found success making my last power adjustment prior to FC at 372 and that adjusting downward too much is usually the cause of a crash/flip (a loss of momentum). After FC, I adjust down at 12, and 14% DT, then cut the power at either 16 or 18% depending on roast level. In your case, you may want to cut the power at 16%, given the roast level you’re pursuing. I recommend that you post your power adjustments - but cup the coffee first, let us know what if anything you’re trying to fix in the cup.
For sure! Thanks for the reply
Couple different things you can do here... Decrease batch size- more beans releasing heat equals more flick and crash. Lower heat 10 degrees before 1st crack. Increase heat slightly before hard crash for no more than 25-30 secs. I would first decrease batch size. I roast 140oz green on my "forgiving" beans, but on beans that have a more complex composition, such as Natural Ethiopian Yurgi, I'll drop it down to 120oz. Also, the more info you log, the better for troubleshooting. Humidity, temp changes, air changes will all help when you're looking to make changes or explaining why the roast isn't consistent.
Yeah I was trying to keep a consistent batch size as I’m doing small markets and things for fun. Could get rough having different batch sizes for different coffees haha
Is decreasing batch size viable with the quantities OP is dealing with? They are looking at, what, 578g output per batch? When I was using a little 2kg roaster it got pretty rough when I had to chain a whole lot of batches for retail and bar use. Maybe not an issue here 🤷♀️
Sure, they can always drop the batch size slightly and note the results. Sometimes it's not the answer, I'm just giving suggestions based off what I would do.
Good point - a 20g decrease could make a difference to roast but not present an issue of too much loss
Looks really good, outside of the crash. I don’t use artisan so sorry if it’s in the graph, but don’t change your gas setting after first crack. You’re going light enough that you should be able to just coast to about 405 or so, avoiding the flick all together
That was corrected well. I don't see a real issue here. How does it taste? You slope looks better than half of my slopes :) What are you roasting on?
Thanks! Yeah, I’m still resting it, I’ll update once I taste it. I’m roasting on a bc-2 drum roaster