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Thread: How Do I Improve The Consistency Of Popper Roasts?

  1. #1
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    How Do I Improve The Consistency Of Popper Roasts?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I foolishly tried to roast some beans today. It must have been like 25C.

    Did six batches total, two of each: Brazilian pulped natural, Ethopian Gambella, Indian Monsooned Malabar.

    Faced terrible consistency problems, with all batches requiring me to pick out under-roasted beans.

    Tried varying the amount of beans (60g - 120g) to no avail.

    Subjectively, all the new beans look worse (even as green beans before roasting) compared to the Peruvian Grace Villa, Harrar Longberry, Indian Tiger Mountain, And Panama Boguete...beans I am used to roasting.

    Are there any ways to improve roast consistency?

    Updated with picture.

    Picture shows Ethopian Gambella Sundried.

    The brazillian and MM were just as unevenly roasted.


  2. #2
    Wine_of_the_Bean
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    A DMM with thermoucouple will work wonders for your consistency. Youll pull the beans out at the same temperature every time.

  3. #3
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    My consistency problem is that some beans are terribly under-roasted (as in still pale yellow in color) while others are almost black.

  4. #4
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Didnt realise you posted about this in this thread as well as the greenbay section.......is i said in the other post, have a look at your popper, not the beans, andy does not hand out rubbish, he didnt get 10 000 +members handing out average beans......whilst some may not be as "polished" as others, they will roast relatively evenly, some regions washing methods differ....and so does the finish.....

    On your popper, try chucking in a painted bean for a few moments, make sure it disappears in the bean mass and reapears again, indicating good movement in the beans, do you have a heat gun lying around? try that with a bowl and see if you get better results, whilst the popper is good(most of us started there!), its not really tweakable without some mods, eg removing bottom plate, using a fan and whatever other mods you can come up with to slow it down......with the bowl you will be able to slow things down a bit and really stretch out that fc to sc distance too..... ;)

  5. #5
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Perhaps im just used to really really clean, uniform beans by chance.

    Yeah, Im going to try and make my beans more consistent.

    First off: The extension cord method.

    Apparently it can slow a popper roast considerably.


    http://www.edwardspiegel.org/coffee/roastingwithpoppers.htm#comments

    72 grams, top on: 360 degrees F
    72 grams, top off, tin can chimney: 365 degrees F
    72 grams, top off, no chimney 370 degrees F

    (note about the above: there were too few repetitions for these differences to be meaningful. i believe that they are accounted for by environmental variables)

    All below are top off (with chimney)
    72 grams, 75 foot extension cord, 315 degrees F
    50 grams of beans instead of 72 grams 320 degrees F
    72 grams, popper tilted almost 45 degrees (by resting lip on a bowl): 325 degrees F
    72 grams, beans stirred every 5 to 8 seconds, 340 degrees Fahrenheit
    100 grams beans 400 degrees fahrenheit


    Do you think this would work in Australia where the voltage is 240 as opposed to 110?

  6. #6
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    no the extension cord wont help you....

    IMO spend $50 on a heat gun and bowl, *you then increase batch size and ability to control roast temp and time. upgrade to bread maker when a cheap one appears.

    i found the popper to hard to control temp wise

  7. #7
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Found a heatgun for $20 at bunnings the other day......12 month warrantee ;D

  8. #8
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Updated with picture.

    Ill pass the heatgun method. Its really not suitable for me. Im a student in a room and theres no way I will ever be getting a breadmaker.

    A behmor could (barely) fit in my room.

    Seriously considering one though.

    *fingers crossed* looking forward to a bonus next month.

  9. #9
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Quote Originally Posted by 223D35262B2E2A2A470 link=1271760712/4#4 date=1271764534
    Do you think this would work in Australia where the voltage is 240 as opposed to 110? *
    No.
    Asked and debunked many times over.

    Which popper do you have?

  10. #10
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Crazy Popper.

    Never had this problem before. Well occasionally when im experimenting with batch sizes, but not for six batches in a row.

    All six batches were within normal batch sizes too!

    Maybe it was the ambient temperature that killed the roast. Dont know... Today was quite warm.

  11. #11
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    Re: How Do I Improve The Consistency Of Popper Roasts?

    Behmor Coffee Roaster
    Quote Originally Posted by 332C24373A3F3B3B560 link=1271760712/9#9 date=1271775692
    Maybe it was the ambient temperature that killed the roast. Dont know... Today was quite warm.
    Possibly; I always liked roasting at cooler times with my Crazy Popper.

    How long are your roast times?
    Have you made any mods to the popper?



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