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Silvia uneven pour

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  • #31
    Re: Silvia uneven pour

    I have played with the tamp and think I have it reasonably level. It is easy to tell by the line in the filter cup. The flow is still more on the rhs.
    I think the flat sections on the divider have to be exactly level and you may not be able to tell that by checking the level at the bottom of the outlet spouts, as these are just cast unlike the flat sections which are machined.
    I have now fitted felt feet to the rhs and that seems to do the job.

    I did up a rough diagram which gives an idea of how much the wider the well is than the funnel and how uneven the flow would have to be to influence the division.

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    • #32
      Re: Silvia uneven pour

      Have a Silvia have had the same problem.

      Not all the time though so logically it must be operator input as other posters have mentioned i.e. even distribution of the grounds in the basket and eveness of tamp pressure and level.

      The hardest thing to change is our habitual technique.

      The water takes the path of least resistance through the grounds (chanelling) so if the above is not correct and consistent viola.

      Like a golf swing, when the planets align its "ping" when they dont....well. The clubs remain constant though.

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      • #33
        Re: Silvia uneven pour

        Originally posted by 212031450 link=1211074648/31#31 date=1307411586
        The water takes the path of least resistance through the grounds (chanelling) so if the above is not correct and consistent viola.
        My Oma (Grandmother) used to play one of these, among other instruments in her repertoire of talents....

        Mal.

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        • #34
          Re: Silvia uneven pour

          Originally posted by 6D6C7D090 link=1211074648/31#31 date=1307411586
          Have a Silvia have had the same problem.

          Not all the time though so logically it must be operator input as other posters have mentioned i.e. even distribution of the grounds in the basket and eveness of tamp pressure and level.

          The hardest thing to change is our habitual technique.

          The water takes the path of least resistance through the grounds (chanelling) so if the above is not correct and consistent viola.

          Like a golf swing, when the planets align its "ping" when they dont....well. The clubs remain constant though.
          Thanks for the comments, yes it could be technique.
          I find that now I have the feet packed higher on the rhs I get a reasonably consistent and even division.
          Earlier in the thread it was suggested that replacing the divider with a different design fixed the problem so that points to the design as a factor.
          The other argument was that the surface tension could cause extract to move to one side and influence the division. It would have to move about 4 mm horizontally, and if it could do that then wouldnt it be more likely to move horizontally along the bottom side of the filter cup? The filter cup slopes a bit to the middle so you would think if surface tension is going to show up anywhere it would be there.

          Anyway, from the design as shown, it is just hard to understand how unevenness in the tamp can influence the division.


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          • #35
            Re: Silvia uneven pour

            Thanks Mal, Yes, in my haste to respond  I didnt finish that sentence. What I intended to say was "...Viola wont be happy with her coffee." Apologies if I misled anyone.

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            • #36
              Re: Silvia uneven pour

              Im curious to know if those snobs who have the uneven pour problem rotate the tamper as part of their routine. It seems to me that a quarter turn of the tamper, with thumb and forefinger on the rim of the basket, tells you if the tamper (and the bean surface) is dead flat. Just a thought.......

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              • #37
                Re: Silvia uneven pour

                Originally posted by 203B313A332036333E333033520 link=1211074648/35#35 date=1307605133
                Im curious to know if those snobs who have the uneven pour problem rotate the tamper as part of their routine. It seems to me that a quarter turn of the tamper, with thumb and forefinger on the rim of the basket, tells you if the tamper (and the bean surface) is dead flat. Just a thought.......
                Yes I try to gauge the depth that way, probably needs some practice.

                I did some extractions with uneven tamp and some with even tamp and didnt notice any impact on the division.
                Once the machine was levelled the flow seemed to divided equally regardless of the tamp.

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                • #38
                  Re: Silvia uneven pour

                  Richard,
                  Good tip, I have been practising the finger method more and think that is helping with the tamp; although it does heat up the fingers a little.

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