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HotTop -- When do you drop beans in?
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Barrie |
Posted on 10/22/2013 5:30 PM
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![]() Pounder ![]() Posts: 504 Joined: April 10, 2012 |
FWIW, I have been loading the beans at 350, read from the OEM probe on the control panel readout. I recently did the rear-wall mod, adding low-reading (as it turns out) Omega probes above (Et) and below (Bt) the OEM probe. During a roast this morning beans were loaded with these temps. OEM 350, Et 361, Bt 327. I see this as an example of the fact that one needs good insight into the performance of one's own roaster and probes, but it is difficult to transfer specific temperature points for use in someone elses roaster/probe setup. The load was of 252g SM Monkey Blend and the Bt reading at FCs was 360. Go figure? Barrie (San Diego, CA)
"So much to learn, so little time." Hottop 2K+., Artisan, Jura Capresso ENA 3 (i.e. espresso). |
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Randy G |
Posted on 10/26/2013 10:33 PM
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![]() 1/2 Pounder ![]() Posts: 398 Joined: February 17, 2010 |
I finally remembered this thread when I was about to roast this afternoon. I am using a HT KN-8838B-2K equipped with Greenbean's HT-RL CTRL boards (very similar in function to the HTC+TC4C). Here is what I recorded: - - - - display BT ET Drop 323 250 288 :30 228 162 280 1:00 200 169 278 1:30 210 187 281 2:00 230 203 286 2:30 246 217 293 3:00 214 232 299 |
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Barrie |
Posted on 10/27/2013 1:07 AM
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![]() Pounder ![]() Posts: 504 Joined: April 10, 2012 |
Quote Randy G wrote: I finally remembered this thread when I was about to roast this afternoon. I am using a HT KN-8838B-2K equipped with Greenbean's HT-RL CTRL boards (very similar in function to the HTC+TC4C). Here is what I recorded: - - - - display BT ET Drop 323 250 288 :30 228 162 280 1:00 200 169 278 1:30 210 187 281 2:00 230 203 286 2:30 246 217 293 3:00 214 232 299 Randy, approx what BT and display temps do you get at First Crack start? Barrie (San Diego, CA)
"So much to learn, so little time." Hottop 2K+., Artisan, Jura Capresso ENA 3 (i.e. espresso). |
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WyoRoaster |
Posted on 10/28/2013 9:32 AM
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![]() Newbie ![]() Posts: 1 Joined: May 13, 2013 |
Randy, thanks for all the information you add to our roasting knowledge base. I'm trying to figure out your 3 minute display temp reading. Should that read 254 or 264? Ed Quote Randy G wrote: I finally remembered this thread when I was about to roast this afternoon. I am using a HT KN-8838B-2K equipped with Greenbean's HT-RL CTRL boards (very similar in function to the HTC+TC4C). Here is what I recorded: - - - - display BT ET Drop 323 250 288 :30 228 162 280 1:00 200 169 278 1:30 210 187 281 2:00 230 203 286 2:30 246 217 293 3:00 214 232 299 |
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Randy G |
Posted on 11/02/2013 7:33 PM
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![]() 1/2 Pounder ![]() Posts: 398 Joined: February 17, 2010 |
OK - I remembered to roast, and I remembered to make some more notes to answer your questions: 260 grams DROP HT - 330 BT - 250 ET - 297 Time - (HT display) 21:55, or "0" on RoastLogger [NOTE: All times from this point forward are E.T. from drop] 1st Start HT - 383 BT - 361 ET - 380 Time - 11:04 1st End HT - 395 BT - 374 ET - 389 Time - 11:57 2nd Start HT - 419 BT - 397 ET - 405 Time - 14:00 EJECT HT - 422 BT - 400 ET - 409 Time - 14:08 (+/-) |
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Barrie |
Posted on 11/02/2013 8:26 PM
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![]() Pounder ![]() Posts: 504 Joined: April 10, 2012 |
Quote Randy G wrote: OK - I remembered to roast, and I remembered to make some more notes to answer your questions: 260 grams DROP HT - 330 BT - 250 ET - 297 Time - (HT display) 21:55, or "0" on RoastLogger [NOTE: All times from this point forward are E.T. from drop] 1st Start HT - 383 BT - 361 ET - 380 Time - 11:04 1st End HT - 395 BT - 374 ET - 389 Time - 11:57 2nd Start HT - 419 BT - 397 ET - 405 Time - 14:00 EJECT HT - 422 BT - 400 ET - 409 Time - 14:08 (+/-) Thanks for that additional information, Randy. I had been ruminating over what I saw as a low Bt number at first crack, but yours is about the same as mine, give or take. Further reassurance I guess. If Randy G. gets that number it must be OK. ![]() Barrie (San Diego, CA)
"So much to learn, so little time." Hottop 2K+., Artisan, Jura Capresso ENA 3 (i.e. espresso). |
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Randy G |
Posted on 11/03/2013 1:22 AM
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![]() 1/2 Pounder ![]() Posts: 398 Joined: February 17, 2010 |
I think it depends on the thermocouples, their mass, and how well they are thermally insulated from their mounting as to how accurate the readings are. What I have found with mine is that the cracks start at the same temperature every time, +/- maybe 1 degree. And accuracy is quite unimportant, but repeatable, and thus predictable data is very important; critical, really.
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ciel-007 |
Posted on 11/04/2013 1:56 PM
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![]() 1 1/2 Pounder ![]() Posts: 651 Joined: April 03, 2012 |
Quote Randy G wrote: What I have found with mine is that the cracks start at the same temperature every time, +/- maybe 1 degree. And accuracy is quite unimportant, but repeatable, and thus predictable data is very important; critical, really. Randy, you are right on the mark, as usual, with your informed remarks. I have come to the very same "critical" conclusion while roasting with my BMT probe. ciel Ciel... seeking Heaven in my cup with ................................................................................................................. EXPOBAR Brewtus II - MAZZER Mini E - MAHLK?NIG Vario - GeneCafe - RAF-1 Extreme (Modified B-2 HOTTOP) - BellaTaiwan XJ-101
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