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Homeroasters - Home Roasting Coffee Community » ALL ABOUT ROASTERS » HotTop Roaster

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HotTop 2k+ as Sample Roaster?
TimPiazza	#26 Posted on 06/17/2016 10:49 AM
Newbie Posts: 22 Joined: April 24, 2016	I just pulled up a roast profile from a great roast made 2 weeks ago, and ran it on "autopilot". Amazing results. The roast was duplicated within a couple degrees through the entire process, from charge to drop. Once the BT probe dropped to below 250? I followed with a second roast using the same profile but different beans. Also great results. Taking this back to my original question about using the HotTop 2K+ as a sample roaster, I see this sort of repeatability being a huge benefit for both developing roasting skill and developing roasting profiles. I have a baseline profile that I can now benchmark with, and I'm sure the learning curve is vastly shorter with both the insight that Artisan provides and the level of control the HotTop 2k+ provides.


TimPiazza	#27 Posted on 10/31/2016 2:30 AM
Newbie Posts: 22 Joined: April 24, 2016	Just an update on this thread... Six months later, and I'm now the owner of a 2kg drum roaster, configured for propane. I went with the 2k rather than a 3k because I'm going to make it portable by placing it on a mobile cart. I just started running seasoning roasts today, and I can see why Turtle said that the profiles don't port. My ET and BT thermocouples behave quite differently. The mass of the drum on a larger roaster makes the temperature changes smoother, but the larger issue is probe placement. My ET probe on the 2k roaster reads the exhaust air, which is often cooler than the BT, quite the opposite of the HotTop where the ET is typically higher than the BT. I wouldn't mind adding a thermocouple that is inside the drum but outside the bean mass, but that will have to wait until later. For now, I am just going on the BT readings while I learn to tame this beast. I still see the HotTop as a good tool as I move forward in this venture. If for no other reason than it provides a great scaled down version of the big roaster, and I can run demonstration roasts on it all day, driving from a custom profile, without worrying about getting distracted by customers. I find that if I drop the beans at the same temperature, the results of a roast are easily within a few degrees and several seconds of the intended target.

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