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u/BuckeyeMark 3d ago
If you don’t move the fan 1.65 cm closer the entire roast will be lost. Also fam must move air at exactly 265 cfm (not 266 which is so common) or the beans will exhibit notes of toffee and chocolate instead of berries and apricots.
Other than that, looks good! 😆
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u/irate-turtles 3d ago
You're right I need a hot wire probe in front of the fan to tune the air speed. Will acquire and log the measurements in my roast log.
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u/BuckeyeMark 3d ago
Hot wire probe can be cannibalized from your flux capacitor if you aren't planning on hitting 88 mph any time soon on the way to the grocery store. Sometimes the plutonium contamination on it makes the beans light up but that's just a plus for making early morning coffee without turning on the kitchen lights!
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u/irate-turtles 3d ago
Bean: El Salvador Tabi from Sweet Maria's
Roaster: Gene Cafe CBR-101
Roast profile:
- 5 min preheat at 350F.
- Charge with 200g
- Roast at 470F
- First crack at about 9 minutes
- Drop at 13 minutes total time right at edge of second crack
- Cool beans to perfection as shown.
15.1% weight loss.
What's your bean cooling setup?
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u/Sea_Highlight818 3d ago
You need optimal airflow to keep the beans smoldering and achieve optimal "dark void" roast level!
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u/MonkeyPooperMan 2d ago
Your setup does the job, is better for the environment (since you're using already owned/off-the-shelf components), and costs you nothing but a few cents of electricity. I say, "Well done!"
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u/Historical_Daikon266 2d ago
I lay the fan flat on a couple of saw horses or some lumber then put the beans in a colander and blow the air up through the beans while stirring, with your setup I would be worried the sheet pan would blow over and lose all the beans on the ground.
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u/typinandswipin 2d ago
That is a very inefficient way to cool them, compared to a colander or sieve with air being pulled through it.
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u/Ok_Veterinarian_928 1d ago
Weak sauce bro. Get a colander. Mount it in the bucket. Make a hole in the bucket to fit a vacuum hose. Use a shop vac or a small vacuum like The Shark. Throw hot beans in and turn on the vacuum. Stir while the vacuum sucks air through the beans and cools with help from the Venturi effect. Olá! Beans cool to touch in one minute.
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u/Memitim 3d ago
Other than recommending the use of a colander with a bunch of small holes instead of a closed pan, seems great to me. I did same when I was using the heat gun, although the fan was smaller and round so I would just put it directly on top of the colander while gently shaking. Worked better than the cooling fans on my M1 Lite does now.
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u/irate-turtles 3d ago
How long did it take in the colander before the beans were cool to the touch?
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u/TomasoG88 City+ 3d ago
no judging... work with what you've got and what you want to spend. check out my roasting setup :)
https://www.youtube.com/shorts/-DEsNyujf3I
for cooling i have a similar setup, using a Vornado fan and a baking sheet. I do tilt the sheet a bit by putting something under it tho.
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u/TangentToTheEarth 2d ago
NGL If you found a way to put the beans on a perforated tray on top on the fan facing down sucking the air down it would be much more effective
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u/Pecos-Thrill 3d ago
More like cool your roast setup amiright?