Hi all
After a short stay Oscar and his friend Grinta are about to be evicted. Thrown on the street!
Both arrived from a previous home where he sat unused for a couple of years because they "made crap coffee". Cash exchanged they came home, a home with many years of coffee experience, had a good clean, seals replaced, valves checked and all was good. And thats where the nightmare started!
After a kilo of beans this thing is wrong but I can't work out why. Basically the closest to good pour and crema characteristics etc etc happens in about 10 seconds. Before anyone jumps in I know its not! By much experimentation using almost pulverised Greek style grounds of 14g I can get a 30g shot in 20 seconds but that is savagely over extracted. Temp is good, heat up is fine its just like this thing is a fire hose blasting through the group. One thing i have recorded is the free flow water rate is almost 150ml in 10 secs - as I remember a test used to be around 75ml in ten seconds.
So everything points to an excessive flow issue but how and why? Everything is standard and I know of the various mods out there but this is way wrong from the outset.
Anyone any thoughts?
C.
After a short stay Oscar and his friend Grinta are about to be evicted. Thrown on the street!
Both arrived from a previous home where he sat unused for a couple of years because they "made crap coffee". Cash exchanged they came home, a home with many years of coffee experience, had a good clean, seals replaced, valves checked and all was good. And thats where the nightmare started!
After a kilo of beans this thing is wrong but I can't work out why. Basically the closest to good pour and crema characteristics etc etc happens in about 10 seconds. Before anyone jumps in I know its not! By much experimentation using almost pulverised Greek style grounds of 14g I can get a 30g shot in 20 seconds but that is savagely over extracted. Temp is good, heat up is fine its just like this thing is a fire hose blasting through the group. One thing i have recorded is the free flow water rate is almost 150ml in 10 secs - as I remember a test used to be around 75ml in ten seconds.
So everything points to an excessive flow issue but how and why? Everything is standard and I know of the various mods out there but this is way wrong from the outset.
Anyone any thoughts?
C.
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