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Thread: Is my popcorn maker roasting too quickly?

  1. #1
    kbc
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    Is my popcorn maker roasting too quickly?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Ive been hanging around on this site for about a year now. This is my first post so gday to all.

    A fews days ago I decided to take the plunge into home reaosting with a 1200W popcorn maker. Today I received my CS starter pack with 4x single origin beans - great!

    I roasted 3 batches today. The first got to second crack in 6 minutes and the 2nd and 3rd got to 2nd crack in just 5 minutes (due to starting with a warm machine). From what Ive read this is too quick.

    For each batch I removed the beans about 30 seconds after the start of 2nd crack. The beans look great - an even dark roast with oil on only a few beans. I look forward to grinding them.

    Any suggestions on the quick roast time? Is there a recommended brand and model of popcorn maker to get a slightly slower roast?

    Thanks,

    Paul

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    Re: Is my popcorn maker roasting too quickly?

    Welsome to the world of popper roasting, Paul!

    If youve never had fresh roasted coffee at home, Ill tell you this is NOT too fast, and youll be VERY pleased with the results!!!!! On the other hand, if you have a local roaster and have grown accustomed to his fresh roasted coffee... yes, this is quite fast time.

    IF, after a few days, you grind and sip the cofee and say to yourself, "I dont think this tastes very good," (unlikely!) then here are the 2 things you can do to slow the roast:

    1) roast with less green coffee. *This will let the air flow faster through the beans, lowering the temperature.

    2) do not use the lid of the popper. *Let the hot air go straight up rather than some of it blow down to preheat the air taken into the roaster.

    After your first cup of home roasted coffee, tell us about it! *Best of luck!

    CHAD

  3. #3
    Senior Member greenman's Avatar
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    Re: Is my popcorn maker roasting too quickly?

    welcome to the wonderful world of home roasting Paul, poppers roast a lot quicker than Corretto, you can do some mods to slow down the roast, there are heaps of posts on this if you do a search.
    I started with a popper until I tried 5 roasts in a row and fried it, I then set up my Corretto and can now roast 600g at a time with full control of the roast.
    Enjoy your roasting....................gm

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    Re: Is my popcorn maker roasting too quickly?

    I have done a couple of roasts in my popper since getting my starter pack. The first roast (50g) was ok, but I didnt have a decent grinder for it. Ive since been given an EM0480 and had another go at roasting. This time I tried 100g and think that was a mistake. The popper went into thermal shutdown and the beans seem to be severely burnt after about 6 mins. They taste like absolute poo. Im going to have to try again with 50g and my new grinder.

  5. #5
    kbc
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    Re: Is my popcorn maker roasting too quickly?

    For my 3 roasts I used 75 grams, 80 grams and 85 grams. 75 grams may be the ideal weight as it did mix better and extended the roast time by allowing more agitation and air flow.

    The results look great. Ill let you know how how it tastes in a few days. Ill be using a Sunbeam EM5800 grinder and Rancilio Silvia to pull short blacks.

    Thanks everyone.

  6. #6
    Sleep is overrated Thundergod's Avatar
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    Re: Is my popcorn maker roasting too quickly?

    Pauly which popper do you have?

    If its a Crazy Popper I can give you specific tips to extend roast times to 15 minutes without any electrical modifications.

    If its another model I can give general tips based on my Crazy Popper mods.

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    Re: Is my popcorn maker roasting too quickly?

    Thundergod, Ive got a Crazy Popper, would be interested to know what these tips are.

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    Re: Is my popcorn maker roasting too quickly?

    Try tilting the popper about 30 degrees off level. You will find that your beans will roll in a nice motion and more hot air will escape. I find my roasts prolonged by 2-4 minutes that way.

  9. #9
    kbc
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    Re: Is my popcorn maker roasting too quickly?

    I have a 1200W Black and Decker popcorn maker. Ill try the tilting method next roast - Thanks for the idea :)

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    Sleep is overrated Thundergod's Avatar
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    Re: Is my popcorn maker roasting too quickly?

    Quote Originally Posted by Hipsi link=1221653644/0#6 date=1221711354
    Thundergod, Ive got a Crazy Popper, would be interested to know what these tips are.
    Start by reading "A beginners guide to Roasting using a popper" http://coffeesnobs.com.au/YaBB.pl?num=1174699442



    Then read a summary of my mods:

    Quote Originally Posted by Thundergod link=1205452241/0#3 date=1205482045
    In my opinion it wont work for another reason.

    Crazy Poppers tend to run hot.
    So to increase roast times you need to get more cool air into them.
    Merely splitting the fan from the heater wont do anything because you arent going to increase fan speed too much before youll probably overwork it to death.
    And slowing it down is not what you want to do at all.
    So perceived control over the fan in reality is in my opinion worthless.

    Also, increased fan speed would blow the beans out of the popper.
    Mine has a custom fitted exhaust pipe and it lost the occasional bean with the standard fan.

    Back to what you need to control.
    As I said, you need more cool air OR you need to be able to adjust the heat DOWN.

    I managed to get 15 minute roasts by increasing airflow.

    If you look closely under the Crazy Popper youll see that half of the air vents are baffled, thereby restricting the airflow.

    To get my 15 minute roast I ended up taking the airflow idea to its extreme.

    I removed the bottom vent altogether as additional holes wasnt enough.
    I recommend adding back some plastic fly screen mesh to keep any stray chaff out.

    The big difference in the end though came from removing the top half of the poppers body.
    Youll see some screw hole plugs around the edge at the top of the popper.
    Prise or drill these out to access the screws.
    By removing the top half you are introducing thermal inefficiency and letting a lot of heat escape that previously was trapped inside the popper.
    When popping corn Im sure its a good thing.
    When trying to slow down a bean roast its not.

    When youve gone this far you can then measure your chimney because the roasting chamber is larger in diameter than the hole in the top of the popper.

    If you want to keep it looking prettier then you could try what I didnt get around to and cut out large sections of the top half of the body.
    This will let out the heat and you can screw the top back on.
    Mesh again could keep out stray chaff and give the popper a more finished look.
    Id recommend metal mesh here though.

    The above works without having to play with 240v.

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    Re: Is my popcorn maker roasting too quickly?

    Wonderful tips.

    Ive taken off my poppers top with a philips screwdriver.

    had the opportunity to take some awesome topless/nude popper pron pics. Will post em shortly ;)

  12. #12
    kbc
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    Re: Is my popcorn maker roasting too quickly?

    The roast was quick but the beans are great.

    Ive played with them over the past 5 days and have had some of the best shots. Ill never buy a roasted bean again - thats for sure!

    Thanks for the cooling mod. I will try something simlilar by cutting out sections of the poppers body to allow increased cooling around the roasting chamber.

    Thanks for the advice :)



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    Re: Is my popcorn maker roasting too quickly?

    Thats great to know, glad you had success with it!

    If you find that you have a fan or another method to cool the beans down super quickly, youll find that the flavour is even better. I have a giant fan that I immediately put the roasted beans in front of, it cools them down completely in about 5 minutes. A professional air roaster will cool them in 2.

  14. #14
    Sleep is overrated Thundergod's Avatar
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    Re: Is my popcorn maker roasting too quickly?

    Behmor Coffee Roaster
    My bucket and vacuum cleaner cool them in under 1 minute.
    A bucket and extractor fan setup is similar and works just as well.

    Ive been told by a well respected professional roaster that cooling by around 2 minutes is OK.


    By the way hookshot, welcome to Coffee Snobs.



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