He said 11 PM, it is now 11:32! He needs to rethink his priorities!Boy, you guys are in to it deep...![]()
Spoken like a man who's had a few espressos. ;-)It's 11:08!
Spoken like a man who's had a few espressos. ;-)
Okay, things I changed:
1. My usual beans came in, so I was able to switch back to those. Yesterday's experiments were with a substitute bean from the same roaster, but not the usual bean, as I had run out.
2. I ground into a small frothing pitcher, as it was easier to get an accurate grounds weight from this. Then I'd pour into the portafilter, tap, and tamp, before loading into the machine.
3. Thoroughly rinsing portafilter with hot water between each run.
I started at 13E, where I had previously left off with this particular bean, and metered 0.56 oz. (16g) into the portafilter. After leveling (tapping techinique) and tamping, it looked like this:
View attachment 246480
I pulled a 2 fl.oz. shot in 25 seconds, and weighed it at 1.265 oz., or 2.26:1 ratio. Here it is, after just a few seconds settling, but it appears to be all heart and crema, little body:
View attachment 246481
Ironically, if I had stopped at 22 seconds, as I had been doing yesterday, it would have been a perfect 2:1 at 1.10 oz.
After the shot, my puck looked like this:
View attachment 246482
I pulled four more shots, and although I find liquid volume measure (fl.oz.) to be horribly inaccurate, they were all hitting 2:1 between 21.5 seconds and 22.6 seconds.
Successes:
1. I am finally getting consistency.
2. My grinder is running at 13E, where it's not throwing the mess I showed previously happening in the 14's.
3. I can hit perfect 2:1's by weight, at an ideal 22 seconds.
Remaining issues:
1. I don't think my shots always look that fantastic. The one in the photo above may be the poorest of those I pulled today, but I didn't think to get photos of the others. My timing, between loading the filled portafilter into the machine, logging weights and various other data, and making sure everything was clean and dry for every run, may mean I was baking the puck for a few minutes before pulling the shot. Probably not a great scenario, and maybe the entire issue.
2. Determining the actual ideal fill for my portafilter basket. I just went .56 oz. (16g), because I've seen others (youtube) using this baseline. I need to learn the best method for finding the ideal fill.
Well, I am glad you finally replied, you are over an hour late!
It looks better. Having a wet puck seems not to be an issue as I have read on several forums. I have wet pucks too every now and then.
Glad to see you indicate the metric system, finally.
Have you tried the weighing of the basket empty and filled without the portafilter?
I have 1 (I think) issue left; still working on the amount of coffee to grind in the naked portafilter to get a decent shot in about 24 seconds. It is still going too fast. It is either the amount of coffee or my tamp pressure. These may be 2 issues instead of 1.
Question to you is: having all these experiments done, how is the taste and mouthfeel? That's all that counts.
My goodness, the lack of puck pressure accuracy is alarming. You need more hardware to get this dialed in exactly. Add a PuqPress from the Netherlands.
I don't need bragging rights, I have no friends.Tut tut, think of the bragging rights you will have. Or make your own.
https://makezine.com/projects/hydraulic-espresso-tamper/
My goodness, the lack of puck pressure accuracy is alarming. You need more hardware to get this dialed in exactly. Add a PuqPress from the Netherlands.
I know for the Silvia there is a (broken link removed to http://www.coffeegeek.com/forums/espresso/machinemods/358287) to eliminate the screw head in the puck, might be able to do the same on yours. I'm using a 17g basket as well.
Maintenance! So important.Soooo, if you guys are still hanging out here, I've been having some issues with my Rocky grinder lately. I haven't been able to grind quite fine enough and haven't been cleaning the grinder properly(read=AT ALL). This is what I discovered...
View attachment 254852
It looks like an Italian sculpture!
View attachment 254851
...and this is what came out of there.
View attachment 254850
View attachment 254853
Looks like the cutting edges are off the burrs as well. I've ordered a new set and I'm treating myself to a naked portafilter.
Even after cleaning everything up, still can't get a fine grind.
Unfortunately, I’m not much help with the grinder calibration. I don‘t own a Rocky, and both of my burr grinders are still new enough that I haven’t had to do any maintenance on either of them. But I do know they need to be recalibrated after changing burrs, so do you think it could be as simple as that? I just did a quick YouTube search on Rocky grinder calibration, and this was the first hit:Soooo, if you guys are still hanging out here, I've been having some issues with my Rocky grinder lately. I haven't been able to grind quite fine enough and haven't been cleaning the grinder properly(read=AT ALL). This is what I discovered...
View attachment 254852
It looks like an Italian sculpture!
View attachment 254851
...and this is what came out of there.
View attachment 254850
View attachment 254853
Looks like the cutting edges are off the burrs as well. I've ordered a new set and I'm treating myself to a naked portafilter.
Even after cleaning everything up, still can't get a fine grind.
Still waiting, they'll be here next week. Took it apart again last night and noticed that the bottom burr runs a bit eccentric when spinning. Unfortunately Rancilio doesn't index the burr to the carrier and with the bit of slop around the screw holes it's difficult to center it perfectly. May try using flat head screws instead of pan heads, using the taper of the head to center the burr, assuming the PCD is concentric to the motor shaft!Your earlier post wasn’t quite clear, when you said, “Even after cleaning everything up, still can't get a fine grind.” Are the new burrs installed, or are you still waiting to receive them?
After scanning through this whole thread, I now believe you.I don't need bragging rights, I have no friends.
D’oh!After scanning through this whole thread, I now believe you.
I thought you were just flexing that sardonic Dutch sense of humor when you've said this multiple times before.
I do think you have one now. And he's just across the Delaware!
You guys would be a hoot at a party.
And in all fairness, i suppose I'm in the same boat, having sufficient time and patience to even scan through all this.
I guess I just wish you hadn't dragged Alberg into this...
There were a few points of confusion in there that I think are a sign that the author isn’t a barista, but I get the underlying concept. Maybe I’m accidentally ahead of my time, but I’m not grinding 20g anyway. I am right around 0.5 oz = 14.2 grams, if I recall. It was more about getting one American nickel’s gap between my spray head and my puck, than some magical amount of grounds. Change the filter basket or the beans or the roast, and that number has to change. All that’s important to me is that I’m getting a 2:1 extraction by weight (eg 1.0 oz espresso from 0.5 oz grinds) in 20 - 25 seconds, with an appropriate spray head gap. If you can manage that with quality beans on a machine with reasonable temperature control and pressure, you’re going to have a shot good enough for me.Just when I got my shots dialed in, this comes along...![]()
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