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Naked portafilter EM 6910

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  • #31
    Originally posted by rawill View Post
    And it is of course an EM 0480, not 380 like I posted above.
    And I am sure it needs a shim, I am thinking far toooo course on even the finest grind.

    I will find out in the morning!
    It was far far too too coarse!

    Ah well back to my old grinder for the morning coffee.

    Tonight after a day at the motor racing, and watching the Sydney V8 Supercar round I,
    Decided to see what is involved in putting in a shim.

    Then found the top burr was only "sitting there", thought something seems strange about the aligning marks, they weren't lined up and the burr just lifted out and slipped back in, wasn't locked down.

    That is a bit odd I thought, but knowing nothing thought, wonder what i could do, found the lock unloc button, played around a bit, found I could use that to put in the top burr and the marks were aligned! and the burr was locked down.

    Set it up on finest grind and gave it whirr, oops no grinds coming out!

    Cleaned it out again, big mess on the floor!

    Set it on about 10, now nice fine grinds come out.
    Must have been blocking up on the finest grind.

    So roll on the morning coffee, time for another experiment,

    but not ready to Junk my Breville grinder yet.
    It might be consigned to the campervan.

    I only have a little "whizzer" in there, but it does do a fair job for me while we are away "camping"!

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    • #32
      How are the shots going?

      Michael

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      • #33
        Have a read of http://coffeesnobs.com.au/brewing-eq...w-machine.html for some detail on the grinder and how it all goes together. Sounds like you resolved the issue but check it out anyway - for example there's a 'flat spot' on the upper burr that should go to the rear of the machine when you insert it. Helps in working out the alignment marks. (mine weren't there)

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        • #34
          Originally posted by Journeyman View Post
          Have a read of http://coffeesnobs.com.au/brewing-eq...w-machine.html for some detail on the grinder and how it all goes together. Sounds like you resolved the issue but check it out anyway - for example there's a 'flat spot' on the upper burr that should go to the rear of the machine when you insert it. Helps in working out the alignment marks. (mine weren't there)
          I will check out your thread, funny I was thinking I had read about this issue somewhere.
          My top burr seems to have two flat spots that go into 2 recessed sections, and when fitting it "correctly" to my novice eye, the aligning marks line up properly.
          That is different from the way it arrived, but it is a used one what can I expect.

          I am about to go try my first coffee with it.


          Well well now - that is different!~!

          First grind was aobut 8-9, compering this grind with my old grind by touch I thought it was a bit finer and agood place to start. NO NO
          too fine, and I have to add I had progressively tamped, as I was doing with my old grinder.

          Shot would not go through the machine! right around in the red!

          So set the grind to 12, filled the basket and tamped it once.
          Slow to start, no water spouts, a single dark flow then blonding.
          Tastes different too!~!

          Now another learning curve begins!

          Thanks again to all contributors.

          Rbn

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          • #35
            14 seems a bit coarse, 12 seems alright, as I said above 8-9, is just too fine, so I will try 11 and see how that is.
            But I am there or there abouts with 12, and not a progresssive tamp, like 2 or 3 tamps like with my Breville grinder.

            Rbn

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            • #36
              Something I found with the VST's (from advice by TampIt) is to grind finer than normal and to then dose lower. i.e. if 11 dosed to 3mm below rim gives a nice coffee, grind at 10 and 4mm below. Not sure how that would go with a normal basket but couldn't hurt to try. The difference in the VST coffee is palpable. (as in the mouth can feel it )

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              • #37
                OK, I will give it a go.
                I think the finer grind is giving me more to "play with", untill I find the right approach.

                And on VST baskets, I believe I should go for a ridgeless, that is if I have read and picked up all the info properly.
                Please confirm this is right.

                Robin

                Note: I a really pleased to see the coffee coming out of the basket the way it does, big improvement from where I started.

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                • #38
                  Yes, ridgeless definitely. Note I don't think there is a 7g VST ridgeless but all the other sizes are available. Pullman tampers Things Coffee | Pullman Tamper, Coffee Tamper, VST Filter Basket, VST Refractometer, Hottop, Coffee Roaster, KN-8828B-2 have the cheapest VST's I found and Mark is good to deal with. You might just find some other goodies that are suddenly 'must have' categories.

                  I think Jetblack and Coffeeparts have them also so they might be closer to you. (i.e. less freight?)

                  I got a 22g and a 15g - 15 is plenty strong enough for me and my normal café coffee is a double shot (sometimes triple) macchiato. I tried the 22g when I got them and could feel the buzz - bloody good for 2 strong doubles though.

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                  • #39
                    Originally posted by rawill View Post
                    OK, I will give it a go.
                    I think the finer grind is giving me more to "play with", until I find the right approach.

                    And on VST baskets, I believe I should go for a ridgeless, that is if I have read and picked up all the info properly.
                    Please confirm this is right.

                    Robin

                    Note: I a really pleased to see the coffee coming out of the basket the way it does, big improvement from where I started.
                    Firstly, congrats: you are well in the way to nailing it. The only problem it gives me is when I go out for a cuppa. Most Oz cafes are quite capable of doing terrible things to coffee. Mind you US is far worse for a random coffee / cuppa charcoal.

                    Secondly: 7g is "shelved" for lack of a better description. All the rest are available in ridgeless - definitely better (even VST research says so). I did the ridged / ridgeless comparison about a year ago when setting up a LM Linea in a cafe for a friend / desperate owner. Result: Way more difference than I expected or even imagined. The owner is now running ridgeless, after scrapping over a dozen ridged VST's. All animals are equal, just some are more equal than others (Orwell).

                    According to VST underdosing their baskets is preferable to overdosing. I concur. Assuming a good grinder, I find grinding near the limit of basket hole size and (under)dosing to get a circa 30 seconds flow is a good starting point on almost all gear. That is often just a little finer than the traditional espresso range. If it is bitter, check the grinder is clean or do the "paper test" and check for excessive fines.

                    Have fun


                    TampIt
                    PS: Progressive tamping: must be very light (circa 3 to 4Kg) or you will get a choker.
                    Last edited by TampIt; 10 December 2013, 12:40 PM. Reason: Added PS

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                    • #40
                      Thank you to the posters.

                      I am happy with where I have got to, haven't got a VST basket yet.
                      However, on an 11 grind setting, and "my tamp" the pressure guage goes to the end of the yellow section during the pour.
                      The crema is darker than when I used my Breville grinder, coffee is a little stronger, so maybe I will try a 7gram VST basket.

                      All is good.

                      Robin

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                      • #41
                        VST basket, 7 gm, ordered and paid for, freight NZ half the price of the basket.

                        We will see how it goes.

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                        • #42
                          I've got the 15g & 22g (& doing quite well with the 15 - 22 only gets used with the double spout handle when there are visitors) so I don't have experience with the 7g. Apparently there are some things to learn with it that aren't needed with the larger baskets. Maybe have a chat with TampIt if you strike issues?

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                          • #43
                            Originally posted by rawill View Post
                            VST basket, 7 gm, ordered and paid for, freight NZ half the price of the basket.

                            We will see how it goes.
                            Hi Robin

                            Brave man starting w a 7g. Errors in dosing may do your head in for a while, however long term it will improve you technique (or you will go over to teabags).

                            Thanks JM for dobbing me in. Robin you are welcome to PM me for some extra tips.

                            Tip: Initially, do not go coarser on your grind or raise your dose. Now I have my scales, 7g of my finely ground, tamped coffee does not even fill the lower level (by about 2mm) of my 7g VST. Essentially, when I thought I was underdosing, I was still well above the rated basket capacity. Yes, other roasts will differ quite a lot. Dose less & use progressive tamping (gently at first) to slow the pour to something sane. If you get a choker, smile: you can dose less again. If you get a gusher, grind finer. That should be enough to get you in the zone after a few shots.

                            One other issue: I do not know if "smart water" is available in NZ, however the full bottle inverted makes a "good enough to get the concept" tamper for the nether reaches of the basket. You need to have something flat which bottoms out about 2mm before the bottom of the lower level to get the critical first tamp correct or it will spray everywhere with your naked. It is the only lid I found over here that fits "properly". Feel free to improvise away....


                            Have fun


                            TampIt
                            Last edited by TampIt; 17 December 2013, 04:36 AM.

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                            • #44
                              Originally posted by TampIt View Post
                              Hi Robin

                              Brave man starting w a 7g. Errors in dosing may do your head in for a while, however long term it will improve you technique (or you will go over to teabags).
                              Have fun


                              TampIt

                              hehe,
                              it will be a cold day in **** before that happens!

                              I know I have read heaps about using the double basket to get a better result, and tossing half the pour out!.
                              But my "income level" dictates I do not waste the good beans!

                              And it will be fun, I am sure.

                              Thanks again, oh and the guys at Pullman were so fast and efficient, JM thanks for the link.

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                              • #45
                                AND, this mornings coffee, I decided to tamp twice, using my single basket, with the double spout back on, not using the nake P/F for now.

                                So taking Tampit's suggestion re the 7 gram VST basket, I tamped the first part of my stock single basket, not a hard tamp.
                                Basket was filled to only juut above the ridge.

                                Well the pour was great, pressure went straight into the red, but only just.
                                Coffee tasted great, I will try the naked P/F with this approach next time.

                                Oh and I filled the basket to slightly above the rim untamped, tamped it and I thought it was a bit under dosed, but decided, no just leave it and try it.

                                As I said, all good.

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