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Thread: Bling Popper early results... (feedback please)

  1. #1
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    Bling Popper early results... (feedback please)

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Would appreciate some input from the pros... :-/

    My first roast (a couple of weeks ago) in the blingpopper went pretty much by the textbook: 125g in ~6 mins to the start of 2nd crack. A good loud 1st crack at ~4-5 mins. (PGN Sihereni)

    Tonight (a bit cooler down in Melbourne) I experimented with a couple more batches just to observe a full roast cycle. However the results didnt seem so great. I was using Sumatran Mandheling from the starter pack.

    1st try: 100g (in an attempt to slow the roast down), but no cracks at all (apart from a couple of stray pops), I dumped the beans after ~12 minutes. Appearance is dull and medium brown. Presumably baked...

    2nd try: 150g. about 30 seconds of stirring to start them moving.
    1st crack was pretty weak sounding (certainly not as load as my very first roast), ~5 minutes in.
    2nd crack was at about 9 minutes, and i left it in to observe. started getting flying shrapnel, was expecting the beans to really darken but they never did.
    Eventually pulled them at 12 minutes. Reasonably dark and glossy appearance (except for the shattered off patches), but far from the level I would have expected by that time (ie burnt to a crisp).

    Any conclusions worth drawing from these early runs? The results of different beans? or weights? Or both presumably?

  2. #2
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    Re: Bling Popper early results... (feedback please

    The Sumatran is fairly quiet Ive found. At 12 minutes, you really havent baked anything. Its usually upwards of 20 minutes that you start to get into baking territory.

    Popper roasting is very sensitive to ambient temperatures. When its cold, try to speed up the roast with a larger mass of beans. When its warmer, a lesser mass of beans is the go.

    Most will stop the roast when they hear the first few snaps of 2nd crack. Depending on the bean in question, I will go into rolling 2nd crack. If you let 2nd crack go on too long, you end up in the Spanish roast territory, a.k.a. burnt. Sometimes you really want the origin characteristics to dominate, so you stop it when 1st crack finishes. Always remember that the popper will often turbo roast the beans. If youre getting 6-7 minute roasts with the max capacity, youre doing fine. Try to experiment to find the max capacity of your popper. If the thermal fuse cuts off mid-roast, then you have too much bean mass. Drop it back 5-10 grams and try again.


  3. #3
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    Re: Bling Popper early results... (feedback please

    But is 10-12 minutes for a popper indicating somethings wrong/needs modifying? or not worth worrying about?

  4. #4
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    Re: Bling Popper early results... (feedback please

    10-12 minutes can simply be attributed to a lower ambient temperature. Youll see a huge difference in roast times when winter comes.

  5. #5
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    Re: Bling Popper early results... (feedback please

    OK, cool. I was a bit worried cause Ive never heard of popper runs going that long.

    In conjunction with the cooler ambient temps, I assume it would then be worth cranking up the batch size?

  6. #6
    Senior Member fatboy_1999's Avatar
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    Re: Bling Popper early results... (feedback please

    Id advise that you step up your batch size gradually.
    Poppers are not designed to run for as long as we coffee roasters want them to.
    They all have a thermal cutout which will kick in at different times for different models. Once it does kick in, you have to wait for cool-down before it will start again (or it could be toast!)

    If you go too big too fast, you might get 15 minutes in and the popper shuts off. The beans could then be a total loss.

    Explore the boundaries in stages (or with beans you dont particularly like).

    There is another school of thought that advises removing these thermal cutouts, Im not a fan of this.

  7. #7
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    Re: Bling Popper early results... (feedback please

    Behmor Coffee Roaster
    Im not a proponent of removing the thermal fuse either. It is about the only safety device the popper has. 150-160g is about the max most poppers can do. Try somewhere around the 140g mark and see how you go.



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