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First Roast with Artisan, Feedback Appreciated

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edtbjon:
Well, Mr Li's instructions are intended for perforated drums which has less mass and thus can take a bit more initial heat.
Check the MillCityRoasters short video on how to calibrate airflow. Then find three markings on your device.
You're absolutely right about that the heat goes up when you rise the airflow a bit. It's true for most parts except when you're in the latter stages with low heat and high air. The flame is running a bit "rich", so the added air makes the burner more effective. This is why I usually lower the heat before rising the air.

The irratic DeltaBT reading may be due to having the laptop plugged in, not vice-versa. You can try adjusting "Smoothing", about which you can read everything in the excellent documentation made by Susan. (It's in the RESOURSES and possibly Downloads section(s). )

MasterKraus:
Ok, taking into consideration feedback. Started the charge temp much lower, though I think a bit too low this time. Attaching a FC+ Zimbabwe roast and then a Mexico Decaf that I took past 2nd crack.

Definitely hard to keep RoR consistent during the drying phase. It wants to shoot up and then flop back down by the yellowing phase.

Was able to time (and record) fan and damper adjustments in the Mexico Decaf more carefully. Might've left it in just a bit too long, but we will see come tasting.

Thanks also to Susan for the smoothing details on Artisan. Was able to plot much prettier graphs this time  8)

-Chris

edtbjon:
Those charge/turningpoint/dry-end times and temps are fine with me. :)
If you take a look at these graphs, I guess that you can figure out how to change your control scheme. I.e. when to make a change so that the roast doesn't jump back on you. The jump of BT and DeltaBT when rising the fan isn't that bad to the roast, but I usually try to lower the heat some 10-20 seconds before rising the fan.
In the last phase of the roast, you do get a definite "flick", starting just after the middle of first crack. Again, you can be preempative (sp?) and lower the heat (to say 0.5 kPa) some 30 seconds into 1C and balance the roast with the fan at a rather high setting.
I get the feeling that the roasts are "running away" from you in the end. Hasving enough time in the development phase is not bad, but rushing towards and into 2C just produces French roasts, which in most cases is waste of good coffee. On the other hand, keeping the roast at a low RoR (DeltaBT) for development makes the coffee more evenly roasted throughout the bean.
But, you're doing good. :) You're just a few roasts into learning about roasting with the Huky.

Wayneg1:

--- Quote from: MasterKraus on August 26, 2017, 04:10:44 PM ---
Definitely hard to keep RoR consistent during the drying phase. It wants to shoot up and then flop back down by the yellowing phase.


--- End quote ---

The graphs usually take 3 seconds to update unless you changed the parameters.  This would make it hard to chase the RoR graph.  If your LED's are on then you can track your RoR much easier by watching the LED.  Also, you might want to smooth the graph out just a tad more.  Cheers.   :)

MasterKraus:
I had the RoR at 1 or 2 seconds prior, which was also causing the uneven charting. Raised it to 3 seconds, fine tuned smoothing and tried to be pre-emptive with my adjustments. Happy with the results!

I'll stop bugging this thread at this point, but thanks for all the initial feedback! Really helped my initial learning curve in setting this up.

-Chris

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