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Weird roast

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  • #16
    Re: Weird roast

    Wife is perceptive.

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    • #17
      Re: Weird roast

      Thanks for the tips Dennis, much appreciated. Yes, I guess with each type of bean temps for FC, SC, etc. can vary quite dramatically and each roast is a new adventure. Now that my DMM is a bit stuffed Ive just placed a new bigger and better one with logging capability on my Christmas list so I can plot some charts after roasting.

      I do, usually quite diligently   , stand next to the BM (it’s down below resting on the deck tiles) while roasting and watch the beans go round and round…and round..., but perhaps with this roast the cracking sounds were so subtle I would have had to place my ear right next to the beans. Ouch ...     Or, FC just didnt happen??

      I, too, start to get a bit worried when the beans are still in the basket at the 20 minute mark. Ive just adapted my heat gun stand so it will be easier to raise and lower while roasting. The way I had it set up before it came to rest on the BM at a certain level and couldnt be lowered any further. Fine for some beans, obviously not good enough for others. Cheers.


      Originally posted by Dennis link=1227179199/0#4 date=1227329891
      Just some thoughts...

      Use the DMM to give you an indication of the degree of temp ramping times - dont get to hung up on what temp FC and 2C occur.  Apart from knowing what is happening, use it as a tool to predict what will happen, and when its likely to occur.  Knowing when your close to FC will of course allow you to understand when to back off the heat and coast to 2C.

      IMHO, anything over 20 mins is probably going to stand a good chance of tasting baked and flat rather than roasted.

      Finally, DO stand next to your roast - walking away can be fraught with danger.

      Hope that helps!


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      • #18
        Re: Weird roast

        This thread prompted me to check my DMM and probes

        10 degrees out. Both probes read 90 in boiling water so Im gunna take the DMM back to Jaycar and exchange it for a different, and hopefully better model.

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        • #19
          Re: Weird roast

          Originally posted by gronk62 link=1227179199/0#17 date=1227420975
          This thread prompted me to check my DMM and probes

          10 degrees out. Both probes read 90 in boiling water so Im gunna take the DMM back to Jaycar and exchange it for a different, and hopefully better model.
          What altitude is it where you live G62?

          Mal.

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          • #20
            Re: Weird roast

            Originally posted by Mal link=1227179199/0#18 date=1227443439
            Originally posted by gronk62 link=1227179199/0#17 date=1227420975
            This thread prompted me to check my DMM and probes

            10 degrees out. Both probes read 90 in boiling water so Im gunna take the DMM back to Jaycar and exchange it for a different, and hopefully better model.
            What altitude is it where you live G62?

            Mal.

            Gday Mal.

            Umm I tried to find a "stunned mullet" smiley coz I dunno what my altitude is.

            I live in West Gippsland near Warragul, Victoria. About the same level as the Princess highway

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            • #21
              Re: Weird roast


              Was the water still boling when you tested it?
              (or did you pour boiling water from the jug into a cup to test)

              I would guess that most cheap meters are rated at +/-10% so 90C. is still about right.

              Accurate scientific equipment will cost you alf a grand or more so as long as it always reads a similar number I dont think it should be too big an issue for roast monitoring.

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              • #22
                Re: Weird roast

                Originally posted by Andy Freeman link=1227179199/20#20 date=1227443887
                Was the water still boling when you tested it?
                (or did you pour boiling water from the jug into a cup to test)

                It was boiling flat out and I needed to wear a rubber glove to protect my skin from the steam while I held the probes in the water.

                Its a pretty crappy DMM so I never expected it to be super accurate, but I didnt think it would be out by that much. I wonder how far out it is at the higher temps during a roast

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