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Thread: my first crack

  1. #1
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    my first crack

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    folks, just received my Behmor 1600, burnt it in, added 300gram of peru, set it for 1 P4 C. With 8.30 remaining on the clock a rolling first crack occurred for 1.30 minutes, opened the door and smoke came pouring out, hit the cool button as the beans were dark and gleaming. Now not sure what happened as i expected a second crack but wasnt game enough to continue. ur thoughts appreciated.

  2. #2
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    Re: my first crack

    Its always hard to tell whats really going on because we have no idea of how truly the image represents what you are seeing, but judging from what I can see of the card, you have gone wayyyyy past 2nd crack!

    Those beans look like good fertiliser and time to try again, either more beans or different profile.

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    Re: my first crack

    Hi lumenary

    Why did you use P4? They do look very black and shiny but perhaps not as bad as they could be (i.e. charcoal black).

    Let them rest and try them in about 4 days time.

    Id suggest you use the P2C setting and maybe increase the bean size to 330g.

    Dom

  4. #4
    caffeinated lemoo's Avatar
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    Re: my first crack

    that looks like its gone way past R2C imo

    either that or very bad lighting I had a laugh

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    Re: my first crack

    clear something went wrong, will try something else this arvo, as for the pic, my image host was down and couldnt improve the pic at all, will try other settings on the camera as well:)

  6. #6
    Senior Member Barry O'Speedwagon's Avatar
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    Re: my first crack

    Im guessing you might have hit rolling second crack at -8.30. I did something very similar on my first roast (not on a Behmor). Is there oil developing on the beans?

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    Re: my first crack

    Barry, yes thats oil ur seeing...

  8. #8
    Senior Member Barry O'Speedwagon's Avatar
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    Re: my first crack

    Oh well, I tried using mine as a Possum deterent....didnt work. I did try one cup of mine (using my Hario hand grinder....easier to clean). Wasnt undrinkable but I didnt chase my losses....

  9. #9
    caffeinated lemoo's Avatar
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    Re: my first crack

    yeah that amount of oil would only be there once a roast goes too far

    try shortening roast time to see how it goes
    dont worry about wasting beans

    the 2kg given is meant for that purpose. keep going at it and you will eventually get it

  10. #10
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    Re: my first crack

    folks, went for it again, 330gram, 1P2C, never heard first crack, at the beginning of R2C i hit the cooler

  11. #11
    caffeinated lemoo's Avatar
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    Re: my first crack

    hmm
    that looks more like start of rolling first crack to me
    IMHO
    do you have the timing of when it hit R2C? and would you have a temp logger by any chance?

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    Re: my first crack

    Agreed, one extreme to the other! That be round 1st crack.

  13. #13
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    Re: my first crack

    never heard first crack, at the beginning of R2C i hit the cooler

    I think that was first crack you heard, what time was on the display when you hit cool?

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    Re: my first crack

    ok folks am getting the drift of things, set up another 300g on 1P2C. at 13.50 left the turbo kicked in for a minute.1st crack started at 11.20 to go till 10.00 to go. second crack kicked in immediately. hit the cooler and all ended pretty well, now to try and upload an image...


  15. #15
    caffeinated lemoo's Avatar
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    Re: my first crack

    grats lumenary

    that looks like a mighty fine roast
    looks about first snaps of second crack
    id say a CS9/10

    youre getting the hang of things
    when i first started i had trouble recognising the difference of first crack and second crack, but after quite a few roasts youll get the hang of things

    I do find having a temp probe helps me judge when to anticipate first crack and second crack too

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    Re: my first crack

    will look into the temp probe, though i dont have a laptop to plug it into...

  17. #17
    Senior Member David8's Avatar
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    Re: my first crack

    Quote Originally Posted by 4B524A424946555E270 link=1335816795/15#15 date=1336024665
    will look into the temp probe, though i dont have a laptop to plug it into...

    All you need is a $30 multimeter with thermocouple from Jaycar, a piece of paper and a pen. You dont need a fancy computer connection. :)

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    Re: my first crack

    hee haaa, have exactly that then!

  19. #19
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    Re: my first crack

    another question folks, what can i expect to happen by changing the program from C to B?

  20. #20
    caffeinated lemoo's Avatar
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    Re: my first crack

    shorter overall time essentially

    depending on the program selected (P1-P5), it will also effect how long the beans are exposed to the different temperatures of the program

    have a look inside the behmor manual to see what those look like roughly

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    Re: my first crack

    have gone thru it, i can only gather that the ABCD program relates to voltage, and that if i used B instead of C (240) that it would be a little cooler, maybe?

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    Re: my first crack

    Lumenary,

    Not taking the micky but please reread your manual. ABCD alter/\/extend your profile time of the program (P1-P5) you choose.

    Voltage using the letters is only done on initial set up.

    Use the search engines as there is already some great posts by blokes like Mel and it really helps when developing your behmor roasting skills :)


    Here are two I have saved as favourites as both have great discussions on the behmor:

    http://coffeesnobs.com.au/YaBB.pl?num=1262756782

    http://coffeesnobs.com.au/YaBB.pl?num=1238070085


    Good luck and enjoy the venture

    Jonty

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    Re: my first crack

    Jonty, ty for ur advice here will use those links, now as far as the manual goes, like all manuals, things arnt explained correctly and in enough detail. (unless i am missing a manual) they spoke of various voltage settings, so i took it that each letter represented a voltage...oh and btw, have written a few manuals myself and i know first hand how stuff i take for granted may well go over the head of anyone trying to fathom what* is what so to say:)

    what i have decided to do is attach the temp probes, and then run some tests and try get a better idea of the different settings and the temps they put out (hate driving blind)

  24. #24
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    There is a print out template for the side labelling where to drill the hole for the thermocouple, does anyone know where that is, weve searched but come up with nothing.

    Thought it could help lumenary too since hes asking.

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    Re: my first crack

    http://coffeesnobs.com.au/YaBB.pl?action=downloadfile;file=BehmorThermocoupl eTemplate_001.jpg

  26. #26
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    hahaha and here I am trying to help another newbie, I am too, only got mine last week, and you beat me to it, I was still searching and literally just found it.

    Thanks




  27. #27
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    Well after finding the template here is a photo of our version :)

    Also added a photo of the peaberry that I just roasted. Preheat 2 mins 183 degrees, first crack 7:35 304 degrees, second crack 10:30 288 degrees, press cool, open door 2 minutes 120 degrees, close door. There was about a 1 minute almost silence before second crack started.

  28. #28
    Senior Member DavidW1960's Avatar
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    Re: my first crack

    Those temperatures are farenheit right? Mine never get anywhere near that - max 245C I also get 3-4 minutes between first crack and second crack depending on weight and bean type.


  29. #29
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    I had a laugh David, no they arent, I just went and double checked the setting and definitely says c.

    Yes I had 3 minutes between first and second.

    Here is the temp chart.


  30. #30
    Senior Member DavidW1960's Avatar
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    Re: my first crack

    WOW!! I am using 1lb, P2, C setting. This is my latest roast.

  31. #31
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    Mmmm I used the P1 as its more aggressive for a hard bean (the peaberries are very hard) so Im told.

    I have no idea about what is normal this was only my second roast.

    Ill be doing another Ghimbi roast during the week on P2, will be interesting to see what that one does.

  32. #32
    Senior Member DavidW1960's Avatar
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    Re: my first crack

    Ive done about 30 roasts now - all P2 C 1lb setting. All 312g green beans. The above graph is typical for me for all beans except Monsoon Malabar Gold which I roast in a smaller batch.

  33. #33
    Senior Member saoye's Avatar
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    Re: my first crack

    Im a little confused with these roast temperature profiles. 1st crack to me is always at a temperature that is lesser than second crack and to achieve second crack I have to have the temperature climb steadily higher (with a play to extend first crack a little) yet it seems in both these profiles second crack is at a lower temperature?

    I am pretty sure the aim is to have a steady, smooth climb up to 1st crack. Also under the impression that a flat prelonged temperature before 1st Crack will result in baking? I am pretty new at roasting too, but this was my understanding so someone correct me if Im wrong.

  34. #34
    Senior Member DavidW1960's Avatar
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    Re: my first crack

    I dont really know. I did ask Andy to have a look at my graph a few months ago and he said it was almost perfect.

  35. #35
    Senior Member shapeshifter's Avatar
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    Re: my first crack

    saoye, Ive always thought the same, its a whole new learning curve using the Behmor.

    My roasts with my popper always fit those lines, similar ramp to first crack as my Behmor roast, and then continues up to second crack, it was weird seeing it come down. In saying that though it may prevent a roast from running away on you when second crack is on its way down.

  36. #36
    Senior Member timmyc's Avatar
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    Re: my first crack

    Behmor Coffee Roaster
    Its all to do with whether you are measuring the environmental temperature or the bean mass temperature I believe. Im assuming that even though you are seeing 2nd crack occur at a lower temp - the beans would have actually reached a higher temp than they were at 1st crack, otherwise you wouldnt have heard a sound :)



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