DavecUK

What are the benefits/reasons for the induction motors? If other grinders can generate sufficient torque using a DC, why would an induction motor be used instead?

La Marzocco Linea Mini - Mazzer Philos

Ikawa Roaster

    • Edited

    The M98V uses servo motor used in CNC machines. Maybe future gen of philos will change design to accommodate multiple sizes of burrs in the same shell space

    • Edited

    HarveyMushman What are the benefits/reasons for the induction motors? If other grinders can generate sufficient torque using a DC, why would an induction motor be used instead?

    They are relatively cheap and require no rectification circuitry, brushes, or rectification and brushless control circuitry. Just a slip ring commutator and start run cap. So there are lots of upsides. Plus no need for a gearbox, they will just run at 1350 or 1650 rpm.

    The downsides are size, which affects formfactor, quite low starting torque, the need for a start/run capacitor which eventually fails (which I suppose balances out brushes in a DC motor (that isn’t brushless). The very low starting torque is an issue, hence why they have to be larger. Speed control is not really possible. Your motor speed is going to be directly rated to mains frequency and number of poles e.g. an American Philos is going to spin faster.

    As a result, the Philos is very large for its burr size and as you can imagine would be ridiculous for an 83mm burr. IMO Mazzer could have used a Brushed or brushless DC motor and given the grinder a better form factor (even with a planetary gearbox). If it was in commercial use Brushed which is easy and cheap wouldn’t have been a problem. I changed the brushes in my mums 14 year old washing machine once and as you can imagine they had had a MUCH harder life than any grinder.

    So manufacturers often make decision and not always the best ones…take the Kafatec Flat Max 2…I personally think it should not have been variable speed, just fixed 400 RPM (with an appropriate motor). Would have made it much simpler and cheaper.

    Interesting! Thanks for the explanation. Quite funny how the speed will differ between regions.

    La Marzocco Linea Mini - Mazzer Philos

    Ikawa Roaster

      2 months later

      MattH yeh apparently its going North 🚀

      Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.

      About Me

        Speaking of Mazzer any ideas what they are revealing on the 31st ? - home based mini/major ? Conical philios ?

          Do we know how much it’s going up to?

          I know I’ll sound obsessed but I would go as far as saying even up at 12-1300 it’s worth it. Still absolutely love using mine and it’s great trying new coffees for both filter and espresso with the I200 burrs.

          Changing the subject, has anyone ever had anything machined/turned from metal?

          It’s slightly wild but I was considering designing a hopper lid in Solidworks with a little sight glass built in and having it turned in stainless.

          I was going to get a wooden one but think the stainless would look great with the rest of the Philos.

          I might send a design to a few companies. I found a few that specialise in prototyping and do one-offs. They’ll probably tell me it’ll cost more than the grinder 😅

          La Marzocco Linea Mini - Mazzer Philos

          Ikawa Roaster

            Has anyone had the front fall off yet or is that only on the other, other / US forum and talked about on Reddit ,😳🤪

            Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.

            About Me

            prezes

            Great idea! Hadn’t considered using actual Perspex or similar for the top.

            I’ve got a design idea in my head for stainless, I’ll report back when I know how ridiculous the price is.

            @Adrianmsmith my front plate is still rock solid. I cleaned it the other day and wasn’t careful and it hasn’t budged.

            I’m glad because I’m not a fan of the new version with the nipples 😂

            La Marzocco Linea Mini - Mazzer Philos

            Ikawa Roaster

              MattH that didn’t last long

              Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -

              MattH Speaking of Mazzer any ideas what they are revealing on the 31st ?

              I may have imagined this but did someone say it would be technically possible fit 83mm burrs inside the Philos?

              I wonder if it’ll be an 83mm version with the same externals.

              Probably not, but I’ve no better guesses.

              La Marzocco Linea Mini - Mazzer Philos

              Ikawa Roaster

              HarveyMushman nipples ?

              Iconic compact easy

              new hand grinder or small electric ?

              But then they say classic silhouette with 30 years of history

                HarveyMushman I’m glad because I’m not a fan of the new version with the nipples 😂

                Im on the fence but not sure id go so far as to call them nipples 🤪🧐 have definitely seen better nipples if not grinder!!

                Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.

                About Me