tompoland t I am hoping that it can be manually triggered because I like the way the Nurri paddle allows me to choose when to end the shot, like on the Slim Jim.

The Vostock can be manually triggered via the menu selection button beside the display (small steel button). The lever comes up fairly slowly when manually triggered, certainly not fast enough to cause damage. The Nurri would be the same.

The one thing to watch out for…if the lever is pulled down and while the group is filling the pressure release is activated, then the lever will come up extremely rapidly. It would be impossible to do accidentally on the Vostok. On the Nurri it’s unlikely as well, unless something catches in the left hand paddle, or falls and in some way activates it. So care should be taken to keep that area clear.

I would also recommend on the Nurri, if the microswitch activation part goes out of alignment at all, you get it immediately fixed so that this can’t happen due to that.

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      chlorox The only way this will happen is if the lever is pulled down on an empty portafilter or no portafilter and then released. The best way to prevent that from happening is to never even touch or pull down on the lever to the cocked position

      What are the chances some one pulls the lever down ? Some one accidentally pulling the lever is lower than releasing the lever. Accidents can happen. Perhaps, locking the lever as a safety feature both ways may be the way forward.

      My first shot with the Evo chocked the lever. I left it to resolve itself. It did as the pressure dripped its’ way through after about 4:30-5:00 mins.

          LMSC

          I can only think of the “big stupid brother in law”, most folks have one.
          You know the type, laughing at your funny coffee machine and lampooning you making a shot by pulling down on the lever, then letting it go while grinning.
          Might be worth it actually.

              Amberale

              I must be fortunwte because no visitor includijg my brother in law has ever even touched my coffee machine or ever even showed any interest in it back when I owned an izzo despite it being a huge lump of stainless steel on my kitchen counter! :)

                LMSC

                The effort it takes to pull the lever down may make that of a lower probability than that - it takes someone who really wants to do it in order for it to happen…

                    chlorox Usually takes about 2 hours on an exhibition day for someone to pull the lever down and then let go, or lock it down then not control it’s rise back….this is on display machines. Stupidity knows no bounds. I may well suggest a locking mechanism on display machines, so the lever can’t be moved.

                    Or even make a replica rubber lever 😁

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                        DavecUK

                        The left paddle is designed in such a way that makes it a movement that requires a conscious decision to accomplish. It requires more force than a falling cup to pull the left paddle and the weight of the cup isnt enough to do that. Also u need a horizontal force not a downward force which is what a falling cup would exert typically anyway. It also cannot be a momentary force - you have to sustain a higher force than that across a certain horizontal range by continuously pulling the left paddle towards yourself.

                        I tried knocking the paddle in a downward facing force or a force directed diagonally downwards. The switch didn’t even move. Only a purely horizontal directed force will move the paddle.

                        Furthermore the pump fills the grouphead quickly, so that would mean almost immediately after the user releases the lever he has to engage the left paddle “accidentally” in order to cause insufficient water to be in the grouohead. But in doing so, the user will more likely also need to move out of line with the lever arm to the left of the group - which puts his chin out of the danger zone.

                        As for the microswitch alignment part, if it goes out if alignment the left paddle wont even open the valve at all. It is made so that it needs to pull a certain distance before activating the microswitch. That cannot somehow change by itself- unless it is deliberately sabotaged!

                        Therefore what you suggested is in fact as unlikely to happen as “accidentally” triggering the venting of the grouphead on the vostok by pressing the touch screen wrongly…I use the parentheses because both situations are also to me similarly unlikely to happen and would only be practically possible if one were to intentionally do so…

                            DavecUK

                            Perhaps people behave in a more uninhibited fashion in an exhibition area than those who visit the residence of a friend or relative. Or others have.had less well behaved or more inebriated guests and visitors! :)

                              DavecUK

                              I am aware u had a very early example of the nurri leva to test. On thd other hand i have been using the nurri every day since I got it in December and i have to point that the travel direction and the force required of the paddle make such an occurrence quite improbable - unless one actually engineers it to happen.

                              A physically recessed button sounds easier to depress than a touchscreen option on a menu…

                              While i suppose for the uniquely-“talented” toaster submerging brigade :), it may always be possible to have any type of accident but if that’s the case, then for them even a physically recessed button can be accidentally triggered at the wrong time … so it seems to me thar both situations belong to the same improbable category for everybody else…

                                Yes which is finally why we asked what speed the lever would come back up at 🤣

                                Got there in the end

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

                                  Cuprajake

                                  I don’t understand what u mean, Jake. Could u clarify what u mena by getting where in the end? The lever handle comes up at a smooth and safe speed when the venting function is actuated.

                                      chlorox

                                      I think Jake would like to see a video of the lever rising after the paddle has been used to depressurise the group at the start of a shot or with a blind basket.
                                      I promise to do one for the Vostok when I get it if one hasn’t already surfaced by then.

                                      Take it easy friend, you have a lovely highly capable machine.
                                      People are interested in it and will delve deeply into its capabilities and idiosyncrasies.
                                      Comments are just that not complaints nor insults.

                                          Amberale

                                          I was not offended by what Cuprajake said. I literally did not understand what Cuprajake meant and thus was asking for him to clarify what he meant so that i can reply.

                                              As far as I am concerned Antonio is a friend of mine, so if his machine brings him success, then good luck to him. We just need to celebrate the abundance of advanced levers, rather then the very over priced, underwhelming basic offerings we had before!

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                                              chlorox
                                              Oh, Take it easy was not meant as an admonition at all.
                                              It was meant as enjoy the wonderful things we have, the position of life we find ourselves in and take time to enjoy its pleasures.🙂

                                                  Amberale

                                                  Indeed, enjoyment of coffee is what a spring lever is all about- elegance, ease, and above all, taste…

                                                    The Nurri comes with a mini drip tray riser that sits on the drip tray to elevate smaller cups closer to the group head.

                                                    The problem is that the riser is too narrow for my Acaia Lunar scale to sit on it and remain stable.

                                                    Ali Express to the rescue.

                                                    https://a.aliexpress.com/_m01uk0i