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JackH
04/23/2019 10:55 AM
Hello Ken! What's roasting?

snwcmpr
04/22/2019 5:07 AM
Hi all.

Gigimedrano
04/17/2019 6:33 AM
Hi guys, my hot top has stripper a gear.. ive only had it for a lil over a year now hot top wants 120+ for a new motor and gearbox assembly any idea? Is this normal year and some Months dont seem lik

Ray Kahuna
04/16/2019 8:04 AM
has anyone built an adjustable coffee grind press?

Nitesh
04/01/2019 10:04 PM
Hello, I have been trying to get in contact with manufacturer of HB roaster in China but failed until now. Does anyone have idea who is the manufacturer of HB roaster in China?

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Rough Profiling With Popcorn Roaster
Gullygossner
I've got a modified West Bend P1 that I have been roasting with for a while now. I have a triac to control the heating element and have added a transformer to boost the fan voltage.

I have been roasting ~200g loads with it to what I feel is pretty good success. I am just curious as to others opinions to the rough profile below. This is just a basic recipe I try to follow as I don't have logging software, just a digital thermostat. Admittedly, my temperature at time 0:30 is much higher but i can bring the temp back in line by about the 3:00 mark. Is there any point in trying to hit 150C at 4:30?

Time (M:SS) Temp (C)
0:00 20.0
0:30 25.6
1:00 32.2
1:50 48.9
2:00 65.6
2:30 82.2
3:00 98.9
3:30 115.6
4:00 132.2
4:30 148.9 ~End Drying
5:00 154.4
5:30 160.0
6:00 165.6
6:30 171.1
7:00 176.7
7:30 182.2
8:00 187.8 ~FC Start
8:30 193.3
9:00 198.9
9:30 204.4
10:00 208.4
10:30 210.0 ~Dump
 
renatoa
Looks ok to me, is within limits. ThumbsUp

DE is in the middle of recommended 3-6 minutes interval, and the Maillard phase duration the same.
What look suspicious to me is the very slow start, my reference profile looks like: 78, 107, 130, 150, at 2,3,4,5 minute marks
Also the FC temperature is surprisingly low, especially for a FB design, where hot air mix tend to raise the BT measurements by at least 10 C degrees over the real value.

Welcome
 
Gullygossner
renatoa wrote:

Looks ok to me, is within limits. ThumbsUp

DE is in the middle of recommended 3-6 minutes interval, and the Maillard phase duration the same.
What look suspicious to me is the very slow start, my reference profile looks like: 78, 107, 130, 150, at 2,3,4,5 minute marks
Also the FC temperature is surprisingly low, especially for a FB design, where hot air mix tend to raise the BT measurements by at least 10 C degrees over the real value.

Welcome


Thanks Renatoa,

You are correct in the observation of the very slow start. My actual profile would be very similar to what you stated. I simply back calculated with a 60C/min ROR and those were the numbers I got as guidance.

You are also correct in stating that that the FC starting point was low. I may be off 5-10C, I was just working from memory at this point. Next roast I will monitor its starting point more precisely.

I mainly wanted to confirm attempting to keep my dry end between 4-5mins was appropriate as I know for drum roasters that is the general target for a similar bean load but I didn't know if that translated directly to fluid bed.
 
renatoa
Fluid bed allows a faster roast, but is not mandatory to use this feature.
 
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