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Effect (if any) of portafilter and lugs on normal dosing level?

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  • Effect (if any) of portafilter and lugs on normal dosing level?

    I own three portafilters, 2 supplied with my Diadema Regal (single / double) and naked portafilter purchased through coffee parts.

    The standard ridged double basket supplied with my machine lives in the double spout handle. I have a Synesso ridgeless 14g basket in the naked portafilter.

    If I dose according to the received wisdom in my standard ridged basket / double spout portafilter, I find that this equates to (almost) the top of the ridge (pretty much as described by Fresh Coffee in another thread today). To achieve a similar clearance to the shower screen on my Synesso basket / naked portafilter, the dosing level appears (to the naked eye) to be lower (relative to the very top of the filter basket). Both make very nice coffee, with identical grind settings, and the puck is of similar appearance post brewing.

    Am i falling for an optical illusion re the difference in dose level relative to the top of the basket (i.e. maybe the ridge fools my eyes), or does the portafilter design / size of the lugs affect affect how 'high' in the group the portafilter sits when locked in. I don't consciously force either handle when locking in?

    I guess I could try swapping the baskets around, but any ideas would be appreciated.

    Cheers
    Last edited by Barry O'Speedwagon; 28 August 2012, 08:48 AM.

  • #2
    I dont know if the lugs come into play at all when it comes to dosing.

    Keep in mind that it's the top of the basket that makes contact with the group head seal. I would have thought the gap between the top of the basket and the shower screen is a constant.

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    • #3
      Thanks SP. Yeh, those were basically my intuitive thoughts too.

      Did some experimenting this morning. I suspect I dose a touch lower than Fresh Coffee describes (though not nearly as low as the photos in the other thread). If I dose to the very top of the ridge and do the 5c test it gets pretty well buried in the puck, so I go a touch lower. Also, because my tamper isn't a perfect fit for the standard ridged basket, a bit of coffee goes into the ridge and for some reason I think this fools my eyes re depth of the puck.

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      • #4
        Barry,

        when next you're in, ask if I am also in and if I am, will show you. I dont really believe in the 5 cent test its quite thick and takes character away from my coffee (extra space that robs me of maximum coffee oils in my brew). But that of course is all subject to individual opinion.

        Different group handles & filters will sit a little differently in the group to eachother, and you just have to become familiar with whatever you are using wrt the volumetric dose you choose to use. The dose in the other thread you referred to is almost a half dose and therefore represents an extreme underdose so not relevant to anything.

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        • #5
          Originally posted by Fresh_Coffee View Post
          Barry,

          when next you're in, ask if I am also in and if I am, will show you. I dont really believe in the 5 cent test its quite thick and takes character away from my coffee (extra space that robs me of maximum coffee oils in my brew). But that of course is all subject to individual opinion.

          Different group handles & filters will sit a little differently in the group to eachother, and you just have to become familiar with whatever you are using wrt the volumetric dose you choose to use. The dose in the other thread you referred to is almost a half dose and therefore represents an extreme underdose so not relevant to anything.
          Thanks Attilio. Will do. I should also have pointed out that I drank the fully dosed shot, and it tasted pretty good (though a bit of a slow pour as I hadn't changed the grind).
          Last edited by Barry O'Speedwagon; 28 August 2012, 11:06 AM. Reason: spelling

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