Search found 3671 matches

by Peppersass
January 20th, 2024, 1:50 pm
Forum: Repairs, Restorations & Mods
Replies: 39
Views: 1810

Circa 1980's La Marzocco GS2

Amazing thread. You have a lot of guts taking on a project like this one. What fascinates me are a handful of elements that carried forward to the GS/3 line, particularly group design and construction
by Peppersass
August 22nd, 2023, 11:33 pm
Forum: Repairs, Restorations & Mods
Replies: 3
Views: 442

La Marzocco succession of vaccum breaker valves

Great post. Thank you for doing the research and clearing up potential confusion about the different vacuum breakers LM has offered over the years. I finally got around to trying the SMA breaker valve in my circa 2008 GS/3 AV. I've had an SMA breaker sitting in a drawer for about 2 1/2 years, waitin...
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by Peppersass
November 11th, 2022, 8:07 pm
Forum: Espresso Machines
Replies: 76
Views: 3019

La Marzocco GS3 New Firmware - Boiler Offset Issues

Fascinating discussion. While it's not relevant to me (I'll never update the firmware in my 13-year old GS3 AV because I have a special version that allows longer brew times for flow control), I do have a speculative observation: At first I was shocked that LM says you should change the offset to a ...
by Peppersass
November 11th, 2022, 6:58 pm
Forum: Blog
Replies: 231
Views: 31467

Comments on La Marzocco Linea Micra Espresso Machine Review

I haven't had time to check out the architecture and technology of the Micra, but if the fundamentals of the pump and water path are similar to other LM machines, you can simply run the group at free flow into a measuring cup for 30 seconds to determine the gicleur size: 0.6mm = 250ml/30 seconds 0.7...
by Peppersass
September 5th, 2022, 2:52 pm
Forum: Coffee Roasting
Replies: 13
Views: 923

Happy Mug Ethiopia Halo Bariti, Jan 2022 arrival - how is it? blueberry bomb?

I've had the same experience with most 2021 Ethiopian naturals. "Generic fruit" definitely sums up my impressions. However, we're both using Ikawa roasters
by Peppersass
September 5th, 2022, 2:49 pm
Forum: Tips and Techniques
Replies: 2
Views: 141

Ideal flow rate for non-manipulated shots?

AFAIK, there's no ideal or generally accepted stock flow rate for espresso machines. There seems to be a somewhat wide range that varies from one model to another, and even from one machine to another. For example, the LM GS/3 AV uses a 0.6mm flow restrictor that sets the theoretical free flow rate ...
by Peppersass
September 4th, 2022, 11:24 pm
Forum: Repairs, Restorations & Mods
Replies: 7
Views: 199

North TJ-067 Propane Roaster Short ("currently ok")

Glad you found the problem! Could have been a power surge. If a power supply or motor start cap got discharged somehow, the breaker might trip from too much inrush current. Yeah, I meant Mill City. I always get those two companies mixed up
by Peppersass
September 4th, 2022, 1:35 pm
Forum: Repairs, Restorations & Mods
Replies: 7
Views: 199

North TJ-067 Propane Roaster Short ("currently ok")

First, before you do anything, I suggest you call USR and ask them for guidance on troubleshooting. Without a schematic or access to the roaster to trace the leads, it's hard to give advice, so the following is speculative and only provided to give you some places to check for what's causing the pro...
by Peppersass
September 3rd, 2022, 4:28 pm
Forum: Coffee Roasting
Replies: 13
Views: 923

Happy Mug Ethiopia Halo Bariti, Jan 2022 arrival - how is it? blueberry bomb?

I roasted the CBC Misty Valley to 28/29 on my Roast Vision, and while the espresso was bright and "fruity", and very tasty, I didn't get a distinct blueberry flavor like I've gotten on "blueberry bombs" in the past
by Peppersass
September 3rd, 2022, 4:15 pm
Forum: Lever Espresso Machines
Replies: 12
Views: 545

No "pull" pressure from Pavoni Europiccola

+1 I know little to nothing about lever machines, but my understanding is that when you lift the lever, water is drawn into the chamber and preinfuses the puck at very low (i.e., 0.6 BAR) or no pressure (i.e., low flow rate). Pressure only builds to espresso maximum when you press down on the lever....