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Rossa Air Espresso PG (Pressure Gauge) Review

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  • #16
    Rossa Air Espresso PG (Pressure Gauge) Review

    Fair enough too- like I said we all manage risk in our own way.

    If you don't mind me asking- what material would be acceptable?

    Brass de-zincify's, plastics can leach and moving parts will wear out... As well as being able to tolerate the high operating pressures? Cost must be considered in the real world?
    Is there a material that matches the design criteria of weight/cost/performance?

    Again I'm no materials expert but I can't think of a material other than aluminium that is light weight and would machine to the high tolerances necessary and cope with the high operating pressures and would perform at the high standards Ross works to?

    At the end of the day if you choose not to buy because of the material choice that's entirely ok... We all make that choice in our lives at some point... But I can't see an alternative material that would tick all the boxes?

    Comment


    • #17
      After a bit of confusion with grind size, I can confirm the Air Espresso is a gem.

      I can now consistently make top shelf shots with great ease and control.

      The aluminium did seem to calcify a little from new but the small amount of residue has stabilised.
      Luckily for me Nanna allows aluminium in the kitchen. Although if she didn't I could still make
      coffee outside.

      Tamping does not seem to affect the process so much. As long you get it level. I think this is because
      the shaft sits straight above the basket and when the air pressure is released the water compresses the coffee.

      I can now make a perfect shot, including hand grinding, in about 3 minutes.

      The shots have about 10mm of crema on top.

      The pressure gauge is helpful and I recommend getting one if you're looking at purchasing one of these.

      Going to take the device to my friends place on the weekend and we will compare and contrast with his electric
      machines.

      Comment


      • #18
        Took the Air Espresso to my friends place on the weekend.

        Both used the same grinder, grind size and coffee.

        He has a modified Expobar. I'm not sure what the modifications are.

        We both made shots and compared the taste, crema and smell.

        The first shot I made was a 6 bar continuous flow.

        He said he has his machine programmed for 3 bar then ramped up to 9 bar.

        The second shot I made 9 bar after 2 bar short stop.

        The shots settled to almost identical.

        We didn't establish specific criteria, but it was difficult to pick a clear winner.

        With the Expobar you can make a lot of shots quickly.

        With the Air Espresso you can pressure profile on the fly. And you can take it camping,
        you use a lot less energy and they will last forever.

        There's about a 1500$ difference between the two aswell.

        If you're only making coffee for yourself, there's an obvious winner.

        Comment


        • #19
          Rossa Air Espresso PG (Pressure Gauge) Review

          Thanks Eljimberino for the update...

          Looks like you are still a pioneer of the air-Rossa- well at least the only one owning up to it... Lol

          It would be great if you could take a vid or at least some pics of the air-Rossa in action.
          I've watched Ross on his demo video- but that's not the same as an end user...

          I'd like to get one of these and a mini-grinder combo when I can scrape the $$$ together.. In the meantime I'm enjoying following your experiences...

          :coffee

          Comment


          • #20
            Gday,

            Ross is releasing a vid soon. I know it is not the same as an end user and perhaps I'll post more later.

            Problem with stills is you don't get a sense of what is happening. Theres a few up in the review.

            I dont have sufficient video equipment.

            Once you buy your hand grinder and air espresso you will never need anything else.

            Comment


            • #21
              In anticipation of some up coming travel, I purchased a high volume hand shock pump from Wiggle, a lezyne brand one.

              It weighs 84g.

              Was surprised to find I was able to charge the cylinder enough for a 7 bar shot. Very sufficient.

              With more effort I could charge enough for a 9 bar shot.

              Comment


              • #22
                Originally posted by Paolo View Post
                I refuse to eat from teflon and aluminium pans....avoid asbestos....don't smoke...only drive a car when I need to...don't use a microwave....don't use a mobile phone for lengthy conversations...in short, I am doing what I consciously can to minimise what I perceive are known risks/concerns.

                I agree that the risk, (if you could call it that) from using an aluminium product to make a few coffees each day would be minimal....but it just seems to be such a backward step and is a deal-breaker for me in what seems to be otherwise another brilliant product.

                Hi Paolo,

                I'm health concious like you, I always try to minimize risks, but Grumpy is right. Also, there is a risk in everything. Brass has lead content inside. I checked with Ross as well. But it is under the Australian limits. Touching the water for less then a minute, below 100 C (the device itself is not getting heated) the risk is minimal if not zero.

                By the way the brass did not bother you when you purchased the Rossa?

                Tamás

                Comment


                • #23
                  Originally posted by beo1329 View Post
                  Hi Paolo,



                  By the way the brass did not bother you when you purchased the Rossa?
                  No it didn't. Isn't it weird the way that each of us draws a different line in the sand.

                  Paolo

                  Comment


                  • #24
                    Originally posted by eljimberino View Post
                    In anticipation of some up coming travel, I purchased a high volume hand shock pump from Wiggle, a lezyne brand one.
                    @eljimberino

                    Hi, just wondering if you or anyone else has an update? : curious

                    Comment


                    • #25
                      Originally posted by Ol_Grumpy View Post
                      @eljimberino

                      Hi, just wondering if you or anyone else has an update? : curious

                      I now have one of the brass air Rossas with a gauge. It is SO much more user-friendly than the HC model. I get phenomenal results every time.

                      As a bonus, it is a work of (industrial) art and a joy to use.

                      Comment


                      • #26
                        Originally posted by beo1329 View Post
                        Hi Paolo,

                        I'm health concious like you, I always try to minimize risks, but Grumpy is right. Also, there is a risk in everything. Brass has lead content inside. I checked with Ross as well. But it is under the Australian limits. Touching the water for less then a minute, below 100 C (the device itself is not getting heated) the risk is minimal if not zero.

                        By the way the brass did not bother you when you purchased the Rossa?

                        Tamás
                        The US FDA Food Code 2009 states:

                        4-101.14 Copper, Use Limitation.
                        (A) Except as specified in ¶ (B) of this section, copper and copper alloys such as brass may not be used in contact with a food that has a pH below 6 such as vinegar, fruit juice, or wine or for a fitting or tubing installed between a backflow prevention device and a carbonator. P
                        (B) Copper and copper alloys may be used in contact with beer brewing ingredients that have a pH below 6 in the prefermentation and fermentation steps of a beer brewing operation such as a brewpub or microbrewery.

                        FDA Food Code 2009: Chapter 4 - Equipment, Utensils & Linens

                        Comment


                        • #27
                          Originally posted by Beanz. View Post
                          The US FDA Food Code 2009 states:

                          4-101.14 Copper, Use Limitation.
                          (A) Except as specified in ¶ (B) of this section, copper and copper alloys such as brass may not be used in contact with a food that has a pH below 6 such as vinegar, fruit juice, or wine or for a fitting or tubing installed between a backflow prevention device and a carbonator. P
                          (B) Copper and copper alloys may be used in contact with beer brewing ingredients that have a pH below 6 in the prefermentation and fermentation steps of a beer brewing operation such as a brewpub or microbrewery.

                          FDA Food Code 2009: Chapter 4 - Equipment, Utensils & Linens

                          Please see this link: Safety of hard anodized pots, pans, & aluminum cookware

                          From the link:
                          The vast majority of mainstream scientists now believe that if aluminum plays any role at all in Alzheimer's, that role is small."
                          ". . . most mainstream health professionals believe, based on current knowledge, that exposure to aluminum is not a significant risk factor. Public health bodies sharing this conviction include the World Health Organization (WHO), the U.S. National Institutes of Health (NIH), the U.S. Environmental Protection Agency (EPA) and Health Canada."
                          "Further, it is unlikely that people can significantly reduce their exposure to aluminum through such measures as avoiding aluminum-containing cookware, foil, beverage cans, medications and other products. "

                          I will get back you with an update, because I ordered an aluminium version.

                          Comment


                          • #28
                            @Paolo
                            Woohoo, way to go...

                            I didn't even know Ross was making the air model in Brass, there you go....
                            I wonder what he'll come up with next?

                            It will be great when a few more people get on board and the numbers reach that 'critical mass' where things start developing a life of their own...

                            Comment


                            • #29
                              Originally posted by Ol_Grumpy View Post
                              @eljimberino

                              Hi, just wondering if you or anyone else has an update? : curious
                              Update?

                              It's awesome. I bought a full sized floor pump, a travel drive that fits in my suitcase and a shock pump on the travel as a back up.

                              Did use the hand pump on a previous trip and it works fine, just takes a little longer.

                              England have picked up their game in terms of good beans.

                              Scotland is a massive joke.

                              France is a joke.

                              Spain the same.

                              Italy is next. We'll see. Don't have high hopes.

                              In short, if I have access to good beans, I can make better coffee than anywhere I can buy it.

                              I dare say I can make better coffee than any electric grinder/electric machine combo.

                              The combination of hand grinding (lower temp) to bean density (read slower), and pressure profiling, ensures the best possible shot.

                              How's that for an update?

                              Comment


                              • #30
                                Which model of the lezyne do you have? Until how many bars can you charge the cylinder?

                                Thanks

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