Koffiepraat.nl forum over koffie, espresso, filterkoffie, horeca en technieken

fransg schreef:Van de Xbar ontving ik de bevestiging en online-formulier om mijn shipping address op te geven. In het overzicht lijkt het alsof ik er twee heb besteld en betaald, lijkt me sterk maar we zullen het zien. Ik vond het bedrag wel aardig oplopen incl alle toebehoren maar mogelijk heb ik ipv extra toebehoren een extra xbar besteld. Werd me niet helder bijvoorbeeld of een portafilter er apart bij moest, en de tamper is mogelijk ook overbodig als het filterbakje dezelfde maat en vorm heeft als die ik altijd al gebruik.

fransg schreef:

B003 schreef: vr 18 jun 2021, 23:49 Fietspomp kan ook maar dan werkt de flow regeling niet begrijp ik.

Jip van Neerven bouwde voor zijn afstudeer een espressomachine met fietspomp, maar hield die lucht gescheiden van de koffie want hij merkte dat muffe stinklucht van de omgeving geconcentreerd het water in wordt geperst, is dus vies.

https://kostverlorenvaart.blogspot.com/ ... -hand.html

https://kostverlorenvaart.blogspot.com/ ... h-jip.html

We have received some of the first batch's parts. Overall the dimensions and the quality are excellent, although some of them fall short of our expectations. We've been working with the factories to resolve technical issues. Now we are waiting for the new batch to arrive.

B003 schreef: do 07 okt 2021, 20:48 Heb je hem binnen? Leuk ding voor er bij en niet te groot

We are deeply sorry for the delay in shipping. In October we sent out over one hundred machines in mainland China, and then we received feedback about gas charger leakage. After investigating the returned machines, we have found out that the cause is a structural error in the valve that connects to the gas charger.


Liquid CO2 converts to gas under certain temperature and pressure conditions. When the valve is closed, the more gas converts inside, the higher the pressure will be. When the valve is opened, the gas is discharged and the internal pressure changes, which in turn affects the conversion of the internal CO2. Generally, the pressure change inside the valve can be very large, thus affecting the function of the valve. Since we have had relatively few changes in the testing environment and conditions in the past, this factor did not get our attention. Only after we handed over the machines to more than one hundred users, we realized its importance.


After careful consideration, we decided to solve this problem before shipping overseas orders. Otherwise, if the product fails soon after you receive it, the repair will be big trouble. We have made a new solution for the valve, and we will make samples this week. After the first test, there is a possibility that we need to make some adjustments. The total development time is expected to be 3 or 4 weeks. The goal is to ensure the reliability of the valve. In fact, not only do we have to discard the already made valve components, but the cost of new components will also increase significantly, but we still think we must do it. We hope you will understand and be patient, thank you.