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Thread: Copy of roast csv files

  1. #1
    Junior Member
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    Copy of roast csv files

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi All,

    I am new to roasting my own beans having just modified a Sunbeam popasaurus popcorn maker to have a controllable heating element.

    I recently purchased a bean bay starter pack with the beans listed below, would anyone be kind enough to share their roast .csv files (from a good roast of course ;) )

    India Mysore Nuggets A
    Zimbabwe Pezuru Estate AA
    Kappi Royale Robusta
    Australian Bunderburg Washed


    Thanks,
    Nik.

  2. #2
    Mal Dimal's Avatar
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    Re: Copy of roast csv files

    Gday Nik,

    Welcome to CoffeeSnobs..... [smiley=thumbsup.gif]

    This is just me of course but I reckon youd be better to try and suss out profiles for yourself. The main reason being that not all poppers are the same in their behaviour, even units from the same manufacturer. Besides which, our palates are all very different and what may seem like a roast from coffee nirvana for one, may seem very ordinary to another. Coffee is a very subjective hobby, to say the least. Very enjoyable though. 8-)

    As a (very) rough guide, try to determine mostly by trial and error what size batch gives you the best overall roast profile. Start with 80-100 grams of beans at a time and then add or subtract from this amount to shorten or lengthen the roast respectively. Aim to try and reach Rolling First Crack (RFC) by about 8-9 minutes and the first few snaps of Second Crack (SC) about 3-4 minutes after that. Dont allow your roasts to progress beyond this point to start with until you have quite a few roasts under your belt and know what to expect as Rolling SC can come on with a rush in a popper and before you know it, youve got charcoal beans.

    As important as roasting the beans, is Cooling the beans afterwards. This can be as simple as tossing the beans from one colander to another in front of a desk fan or you could knock up a dedicated bean cooler using a 20 Litre Plastic Bucket with a Bathroom Exhaust Fan mounted in there. Lots of threads about this sort of thing if you do a search of the forum. Theres also a great "How To" primer to be found here.... http://coffeesnobs.com.au/YaBB.pl?num=1174699442 for all newbies to coffee roasting using a popper, so there may be some helpful information in there for you. All the best Nik and have fun.... :)

    Cheers,
    Mal.

  3. #3
    Junior Member
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    Re: Copy of roast csv files

    Hi Mal,

    Thanks for the in depth reply!

    So far I have made a few modifications to the popasaurus which allows more fine grained control of the roast.

    In stock form it was pretty terrible (overheat at the start, temperature cut off at the end), so I have made the following modifications:

    • Bypassed the thermostat
    • Modified the fan for an extra 4 volts, speed is also variable
    • Connected the heating element to a solid state relay so temperature can be PC controlled for any temperature required

    I put the popper into an esky during the roast which allows me to hit pretty much any temperature I want.

    The mods also make cooling nice and easy as I can just turn off the heating element and the fan cools them down in around a minute Lots more fun that tossing between colanders :)

    Currently Im roasting about 100 grams at a time which seems the optimum amount, they swirl about quite well and seem to roast pretty evenly.

    I was after a few example .csv files just to see how real world roasts compare to the theoretical roast profiles you see on the internet. Ive noticed a big difference in roasting the various bean types so far, so I am keen to see the roast profiles from the more experienced roasters!

    Note that the roasts dont have to be from a popper, Im interested to see roast data from correttos and any other crazy contraptions people use :)

    Thanks,
    Nik.



  4. #4
    Mal Dimal's Avatar
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    Re: Copy of roast csv files

    Behmor Coffee Roaster
    Hi again Nik,

    Sorry for trying to show you how to suck eggs mate :-[......

    Im pretty sure Ive seen some very decent CSV Profiles from one or members who have similarly modded their poppers under the "Roasters" category so if you do a search there, you might find what youre looking for. If you start a new thread there it will most likely attract the members Im referring to. All the best mate, :)

    Mal.



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