Hi, I am new to the Aillio Bullet R1 V2, came from the Fresh Roast SR800.
Looking for any tips on controlling Rate of Rise but probably not in the way your thinking. I am generally understanding the concept of it but getting the right balance of air and power is tricky. It is kinda like driving on an icy road and over correcting the steering wheel and then the car starts going in the wrong direction . Any tips on how to control the ROR without it going wild?
I think the biggest thing is understanding your beans. Your image there shows many changes over the course of your roast. I would suggest doing some practice roasts and only experimenting with changing one thing. Perhaps even doing a roast where nothing changes. For example, charge 350g, set power to P7, Fan to F3, and D9, and just let it go until you hit your drop temp, watch what your curve does without changing anything (I did this in my 1st seasoning roast). Next roast, just try slowly decreasing Power, maybe go from P7 down to P5, perhaps in 3-minute intervals, and don’t allow yourself to add heat back. Then take that roast, repeat the power steps, and maybe slowly raise your fan setting to make adjustments and fine-tune things. It’s an iterative process.
I have found, in general, that I do not need to make as many changes to the settings as you did in your roast graph above. Getting the charge temp right is important, and being patient and letting the beans behave as they will goes a long way. It’s also good to have a game plan. When do you want to hit yellowing and first crack? Use those times as anchors in your roast and aim for those. What temp do you want to drop at? Are you going to have enough energy when first crack starts to get to that drop temp?
As you mention, you do have to look ahead and predict where you’ll be in the future, and whether that’s in line with how you want to roast. I also like to find other roasts for the same beans on Roast.world to see what kinds of curves and 1C temps people are getting (the numbers are a touch different for me because of my altitude, but it’s a predictable difference).
Thank you @brewweasel. I am going to look back at my seasoning roasts and see what my graph looks like. I remember when I first started making Espresso, one of the first lessons I learned is only change one variable at a time (guess I didn’t apply that lesson learned). Then will have to do another roast and try your suggestion of only adjusting power in specified increments and see what happens.
Seems like I am going to burn through some coffee before I get the hang of it!
Thank you for your suggestions!
