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equally timed single & double shot baskets

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  • equally timed single & double shot baskets

    Hey, just wondering if anyone has had success in switching between single & double shot baskets with the same grind?

    I believe VST were advertised as such without success. There is also the 'the single' IMS competition, but apparently it gives very slow shots.

    The reason I'm asking is because I want a simple office setup with a standardised single shot (espro tamper, perhaps), but a double would be useful for flat whites. Currently on my la pav at home I make my espresso shots longer & faster, but shorter & slower for milk drinks, so a double which has a slower flow rate than the single would be beneficial. Ridged baskets might work? I don't care about wasted coffee/low extraction.

    Oh and of course I could just set it up for a good double & split them, but I would prefer to use a bottomless portafilter for cleanliness.

    I appreciate that this might not work in principal when switching between coffees, but any advice would be welcome!

  • #2
    Technically possible but you can't assume that dose will be simply halved. Flow rate in a single is rarely the same.

    FWIW, I reckon the best place for a single is in the junk draw. They're not worth the effort.

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    • #3
      You don't say what machine will be used in your office set up....but there is so much less margin for error when using (most) single baskets....and presumably the machine will be used by people of varying experience....doesn't sound like it will end well.

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      • #4
        Originally posted by burr View Post
        Hey, just wondering if anyone has had success in switching between single & double shot baskets with the same grind?

        I believe VST were advertised as such without success. There is also the 'the single' IMS competition, but apparently it gives very slow shots.

        The reason I'm asking is because I want a simple office setup with a standardised single shot (espro tamper, perhaps), but a double would be useful for flat whites. Currently on my la pav at home I make my espresso shots longer & faster, but shorter & slower for milk drinks, so a double which has a slower flow rate than the single would be beneficial. Ridged baskets might work? I don't care about wasted coffee/low extraction.

        Oh and of course I could just set it up for a good double & split them, but I would prefer to use a bottomless portafilter for cleanliness.

        I appreciate that this might not work in principal when switching between coffees, but any advice would be welcome!
        I have set up a lot of stations using a 7g VST and it works "close enough" on all their other baskets - 15, 18, 20 and 22g. By that I mean (very) minor dosing or tamping shifts are all that is needed. No other brand comes close to that consistency. The reason - VSTs are truly precision baskets (unlike all their competitors I know of so far) and the actual hole size (and overall hole area) increases as the size goes up. VSTs also have a much larger hole area compared to most, so their actual flow rate is usually around 50% greater than the "standard basket" (whatever that means). The end result is pretty consistent flow / pressure balance in line with most machines as long as
        1) Your grinder has an even particle spread
        and
        2) Your grinding texture is set to obtain close to the maximum extraction ratio.

        In other words, the VST only gives that consistency when everything else is also set up correctly. Your "I don't care about wasted coffee/low extraction." would make that setup unlikely.

        Also, The 7g VST requires its own tamper as it is circa 40mm diameter, not the 58mm standard diameter.

        Whether it is worth it in your case would depend upon the interest of your fellow employees - dubious at best.

        Enjoy your cuppa - even if the stuff at work is only useful in promoting nightmares.

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        • #5
          I agree with Tampit. If the baskets are quite close, then a small 0.5g adjustment in dose may be enough to get them the same. Either up or down dosing either baskets to get them matched.

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          • #6
            Originally posted by Jackster View Post
            I agree with Tampit. If the baskets are quite close, then a small 0.5g adjustment in dose may be enough to get them the same. Either up or down dosing either baskets to get them matched.

            You're proposing to do this in an office environment, with multiple users?

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            • #7
              I have been rather curious about this recently as well. Are you saying that I can use the vst 15g basket on one portafilter and a 22g basket on another portafilter without changing the grind setting? At the moment I'm using a standard 16g rancilio (double basket) for a single shot and a La marzocco 22g (triple basket) for double shots but have to adjust the grind finer for the 16g. If I don't have to change the grind setting when swithing between the 15g vst to the 22g vst baskets, I'm officially interested.

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              • #8
                I do this all the time: I like stronger coffee so my portafilter has a 20g basket while my wife's has a 15 (I think). Both are VST.

                We each use a different time setting on the grinder (Mahlkonig Vario), I'll adjust the grind setting and my time setting to get mine right then do just her time setting to get hers right.
                Last edited by Lyrebird; 22 August 2019, 02:31 PM.

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                • #9
                  Originally posted by NewToEspresso View Post
                  I have been rather curious about this recently as well. Are you saying that I can use the vst 15g basket on one portafilter and a 22g basket on another portafilter without changing the grind setting? At the moment I'm using a standard 16g rancilio (double basket) for a single shot and a La marzocco 22g (triple basket) for double shots but have to adjust the grind finer for the 16g. If I don't have to change the grind setting when swithing between the 15g vst to the 22g vst baskets, I'm officially interested.
                  G'day NewToEspresso

                  Short answer - Yep. Just like Lyrebird stated as long as you maximise the extraction ratio then keep the basket dose / VST size ratio the same (i.e. in my home machine, dose the 7 to 7.2, the 15 to 15.4 and the 22 to 22.6) and have a grinder with an even particle spread. The further you are out on the dosing, the wider the gap you need to adjust - although it is never necessary to alter the grinding texture.

                  I hope this helps.

                  TampIt
                  PS: If you are near Central cost, NSW this may be useful: https://coffeesnobs.com.au/coffee-ha...m-baskets.html

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