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Thread: Decent espresso

  1. #2091
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    Quote Originally Posted by RNAV View Post
    Do you have any preliminary pictures of the group head controller you can share? I'm trying to decide if I should wait for the v1.3 machine, and the group head controller is the reason why I'd wait (my wife doesn't like the "modern" design and I'm hoping the controller changes the look enough for her). Do you expect the price points to remain similar?
    Here you go, and at the moment, the price is not changing.

    -john

    preview-lightbox-GH MARKS DESIGN #4 MARKS_0003.jpg

    preview-lightbox-preview-lightbox-GH MARKS DESIGN #4_0001.jpg

  2. #2092
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    Quote Originally Posted by decent_espresso View Post
    Here you go, and at the moment, the price is not changing.

    -john
    Thank you very much for sharing! It looks nice!

  3. #2093
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    Default 27% extraction with EK + Rao's Blooming espresso

    Scott Rao was able to achieve a 24.5% extraction yield with his 1:3 espressos, and a relatively inexpensive Baratza grinder.

    Now, new Decent customer Rasmus Oxholm is using Rao's "Blooming Espresso" technique on his DE1PRO + an EK with SSP burrs with a 1:2.5 shot, and achieving a 27 extraction.

    Interesting developments, for those of us who track refractometer results.

    -john

    screen 2018-09-19 at 8.30.00 PM copy.jpg

  4. #2094
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    Default v1.1 Shipping Schedule Update

    I was optimistic to start making v1.1 espresso machines at the end of September, but 3 suppliers have notified us of delays on their end. The mixing chambers, which have valves molded into them, are 3 weeks delayed, as are all the CNC manufactured parts. That puts is "parts complete" in mid-October, if everyone delivers according to their current promises. So, the first v1.1 machines should start to ship to customers toward the end of October.

    Some back story:

    Our v1.0 machines were really "from scratch" by us, whereas for v1.1 we're trying to have a few other companies do a bit of prep work for us.

    All our cables were hand-made by us for v1.0. I bought the specialist equipment and all the parts. But, it's very time to consuming, especially if a dedicated company can make a cable with even more expensive specialist equipment (or maybe robotically). And, we don't have the same kind of test equipment (or test knowledge) that a specialist would have.

    For example, we've had a lot of issues getting all our cables to stay tight (not shake loose) during shipping and that's been the leading cause of "dead on arrival" espresso machines for customers. Luckily, this is usually quickly resolved by opening the case and the customer seeing a disconnected cable, but that's still far from ideal.

    With v1.1, we're working with BMA https://www.bma-tech.com/ to make all our cables, but it's taking more time than we'd like. With the samples they made for us, we found a number of issues, from too-short insulation on certain connectors to easy-to-pull-of on others. So, they've made a 2nd attempt, and now a 3rd attempt.

    In the meantime, if it turns out that we have everything we need to ship v1.1 espresso machines, we'll simply revert to making small batches of the cables ourselves.

    Attached is our GANNT chart, that Fabrice maintains, in order to track all the dependencies.

    -john

    screen 2018-09-20 at 12.48.21 PM.jpg

  5. #2095
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    Cables coming adrift does suggest some very harsh handling, spade connectors do normally partially latch on, whilst easily remedied, it is a distraction and not something a customer wants to encounter.
    I marvel how you do keep your hand firmly on the tiller and full credit to you.

    Jon.
    One Life this is it, it's not a rehearsal so enjoy it best you can - Have some fun, buy a coffee machine.

    ECM Synchronika - ECM V-Titan 64 Grinder - AMIR Scales and they work fine - 15-18-20-22-25g VST Filter Baskets - Several Jugs and a Home Made Knock Box. - Useful contributions from the Family.

  6. #2096
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    Quote Originally Posted by xpresso View Post
    Cables coming adrift does suggest some very harsh handling, spade connectors do normally partially latch on, whilst easily remedied, it is a distraction and not something a customer wants to encounter. I marvel how you do keep your hand firmly on the tiller and full credit to you.Jon.
    The spade connectors have been the main source of "dead-on-arrival" machines, itself about 5% of the total we've sent.

    The connectors we have used for own home-made cables do have a spring and a dimple on them, which is a pretty reasonable lock, but still about 5% of machines have a spade connector come off.

    The new spade connector cables we're making have a latch, so that it's impossible for the connector to be removed without getting a small screwdriver and pushing a pin in while you pull.

    It's rather a waste of everyone's time for me be skyping with a new customer, having them dig inside the machine to find a loose connection. Not to mention the huge emotional let-down for the customer. I'm highly motivated to sort this out!

    One thing we're still fighting, that perhaps you can comment on...

    Spade connectors come in two sizes, and whilst we have the larger size on virtually everything, the smaller size exists on the AC power switch (sigh), and we haven't yet found a guaranteed-never-to-come-off connector for those smaller spades. Still looking... If you have any tips, please do share.

    -john

  7. #2097
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    Wish I could help John, I believe there are three sizes, on occasions I come into contact with some equipment (Not much nowadays) some spades that take a lot of effort to separate, so somewhere there exists terminals that once pushed together, effort is necessary to pull apart.

    Jon.
    One Life this is it, it's not a rehearsal so enjoy it best you can - Have some fun, buy a coffee machine.

    ECM Synchronika - ECM V-Titan 64 Grinder - AMIR Scales and they work fine - 15-18-20-22-25g VST Filter Baskets - Several Jugs and a Home Made Knock Box. - Useful contributions from the Family.

  8. #2098
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    Quote Originally Posted by decent_espresso View Post
    Scott Rao was able to achieve a 24.5% extraction yield with his 1:3 espressos, and a relatively inexpensive Baratza grinder.

    Now, new Decent customer Rasmus Oxholm is using Rao's "Blooming Espresso" technique on his DE1PRO + an EK with SSP burrs with a 1:2.5 shot, and achieving a 27 extraction.

    Interesting developments, for those of us who track refractometer results.

    -john

    screen 2018-09-19 at 8.30.00 PM copy.jpg
    What does EY27% taste like?
    Espresso: Ceado E92 (modified for single dose); Vesuvius; VST baskets and refractometer.
    Other: Aeropress, Sowden and Alessi Moka Pot; Mazzer Robur doser with Auber timer; Mazzer Mini E; Expobar Leva Dual Boiler

  9. #2099
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    23-24% are fairly easily doable with 3:1 ratios on most kit, going above seems to be hard. Much depends on the coffees you use, lighter roasts tend to bottom out at 23%, darker allow around 26%. This is on an L1 lever, so when you are locked in to a single pressure profile, would be nice to try it out on a DE one day.

    26% with a dark roast wasn't very tasty, curious what 27% was like on a DE + EK.

    T.
    Espresso: Londinium L1, ZR-71 grinder
    Photography: Flickr

  10. #2100
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    Quote Originally Posted by Obnic View Post
    What does EY27% taste like?
    According to Rasmus:

    I've been using "blooming espresso", with the EK.

    1-2,5/3 AMAZING .

    Still with clarity, acidity and distinctive notes.

    It's still pretty new(both EK and DE1). And I am also still getting to know them.

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