iRoast Roast 3 (med. French 10 minutes) May 2005
Roast3-AGraph1 |
Roast3-ScreenChaff |
Roast3-Chaff |
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Roast3-CoffeeFinish |
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Roast 3 Information
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Type: SM Monkey Blend Weight: 120 grams 0-load Volts: 125.5V Load Volts: 115V Ambient: 81F Humidity: 55% |
Total RoastTime: 10min. ROAST PROFILE Stage 1: 325F, 5min. Stage 2: 390F, 7 min. Stage 3: 460F, 3 min. |
What a surprise -- I didn't expect to get such an accelerated roast, compared to Roast 2 , just from raising the voltage.
Roast 3 uses about the same voltage as Roast 1, and that roast ran hot and fast also, but Roast 3 runs faster, hotter -- perhaps related to less weight (bean mass) and chaff increase, along with the higher voltage . . .
You can see that chaff almost completely blocks the screen (imagine what 150grams would look like) -- but there is also a lot of chaff in Roast 2, nearly as much. The difference in operating voltage is about 5 volts, under load (115V versus 110V). Could this really be the source of such a large difference between Roasts 2 & 3? Further testing is required, but I will be using the lower voltage setting of 118V no-load / 110V load, for a while.
A speedier roast, in total, and the drying phase 80F-300F is much too short. Yet my heating stage 300F-390F was way too long.
Richard G
comments welcome. email
gilbert(at)iyume(dot)com
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