MuddyOne given you are getting some good shots with certain coffee types, I think so also. It’s a shame you can’t recall the coffee types you do enjoy. Knowing some of that would help identify if there is a trend in your preferences.
What I shared above was just experience, for sake of broadening knowledge about what other factors can contribute to how flow rate accelerates.
See below my totally unscientific method without purchasing devices to fit to your portafilter !!
What i will say after doing this just now, you must be fairly high if you are noticing steam.
See half way through where i get to around 102 degrees. Very little evidence of steam and pressure only around one bar or less.
Starting point with tape was to create flow restriction.
End of video shows checking calibration at 100 degrees in open boiling water.
Befor anyone says this shows the Evo to be reading low, please bear in mind im shifting more volume and flow than on a normal shot. May try later on a genuine shot just to see what im actually brewing at.
@MuddyOne where are you located, your welcome to borrow this meter if it could be any use what so ever.
Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.
LMSC I was referring to a rapid acceleration after a very slow start. I have high-uniformity burr sets that do that when dialed in for traditional espresso.
The outfalls are larger than most espresso burrs, so these need to be 50 microns or less from burr touch to get into traditional espresso range. Ditting 804 machined burrs do this also.
Cuprajake I’m listening my friend, I’m awaiting response from the retailer to see what they can say about that overheating and excessive steam, there is only so much I can do at this point, so for now I’m trying to discuss other potential issues. I have been doing my research about flash boiling too.
People come back to this thread and post me further suggestions so I carry conversation, no need to get pissy :)
Pl get a bag of Blackcat’s Chocolate Point. It is a nice coffee and easy to dial in as well. 😊
Edit:
I also recommend you keep a log of your coffee — roaster, coffee, temp, grind size, what worked, didn’t.
Thanks but I think il get myself such device for future it’s handy,I’m getting a lot of steam like from boiling kettle .
MuddyOne - for reference on my coffee today. It was from Darkwoods - Crow Tree. Medium dark. Roasted 11 December - I’ve been drinking this over the past week. Seems to be a blend of American coffee (Peru, Bolivia, Colombia and Honduras)
Machine: Lelit Elizabeth (vibe pump, slower ramp up)
Grinder: Niche Duo, setting 7.
Basket: VST 20g
Dose: 19g
Pressure: 10 bar -> 9 bar (noble infusion)
At 8s, starts dripping. Shot finishes at 33s, 38g out.
I already ordered another bag of red brick as per other suggestions, I wonder, only wonder if adjusting off set to negative value would fix the overheating problem. I mean there is a reason why negative off set exists right?
Still I will hit b&q and screwfix tomorrow and see if I can wired thermometer before ordering online.
Sorry if ive missed it any you already posted but, have you got a video showing your situation, steam etc.
Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.
Yeah I think it’s been auto deleted after couple days.
That steaming is happening above 92 degrees with off set at 2. It does not happen after 30 minutes of turning on machine,rather after 1h. 10s after putting lever up usually gets back to normal.
Ok, so assuming your kitchen isnt at 5 degrees C and 80 percent humidity ( 😘 ) i see what you mean.
Have you checked that water temp with milk thermometer as it runs in the cup.
Dont forget especially if tou get a “cheap” thermometer to “calibrate ” it at 99.99 degrees 😎
Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.
Adrianmsmith I will get thermometer tomorrow, I have milk one but it’s not calibrated lol :)
MuddyOne wait wait wait!
Your machine… You said it was at 94C…
But look closely at the video before it starts drawing water… It reads 97C? Could this be the cause of the steam?
What’s going on?
