Recent Posts - Page 4

by GDM528, Today, 3:55 pm in Grinders
Replies: 5 Views: 64

Controlling the RPM of a DF64 with a VFD

Interesting... I would have figured the external VFD already has a motor start function built in, making the start circuit built into the DF64 redundant. So this is a know-what-you're-doing sort of hack, given the voltages and currents involved. Dunno if this warrants a new thread, but I wonder if it might be simpler to swap in a
by gingerjess, Today, 3:55 pm in Buying Advice
Replies: 20 Views: 1021

Upgrading espresso machine for no future regrets

Got it-so the needle valve is, from a water-flow perspective, already "before" both the group head and the hot water spigot, and as long as you don't also trigger the electronics that manage the solenoid between them, adjusting it can adjust the standard infusion flow?
by Marcelnl, Today, 3:52 pm in Coffee Roasting
Replies: 8 Views: 196

How to fast-track espresso roast tasting?

THAT, and it works in this day and age as well
by baldheadracing, Today, 3:34 pm in Grinders
Replies: 808 Views: 82289

Orphan Espresso Apex Grinder

Ah, okay . I find that hard to answer as a grind setting that gives the same (median) grind size in the two grinders may/can/will flow faster from the Apex due to different grind distributions. That may mean faster flow, and thus less contact time, with the Apex - so a different technique might be needed, as setting
by GDM528, Today, 3:32 pm in Grinders
Replies: 118 Views: 7904

Hacking the DF64 exit chute

I and others have tried metal exit chutes - I even tried a metal chute feeding into a portafilter charged to 3,000 volts, to electrostatically attract the grounds. I didn't find any real benefit, and have some theories why: 1) The grounds are in the exit chute for less than 1/10th of a second, which doesn't afford much
by olutheros, Today, 3:04 pm in Coffee Roasting
Replies: 2160 Views: 157197

Greens Alert

why are they literally twice as expensive as everyone else also lol they claim all their coffees have "Cup of Excellence scores" and list high numbers and it's pretty clearly a lie, like a rando espresso blend is $15 a pound and has a "Cup of Excellence Score: 87" which is literally not how CoE works at all
by Nunas, Today, 2:06 pm in Repairs, Restorations & Mods
Replies: 7 Views: 90

Roaster, situation demands I use an extension cord

That should work fine, maybe even a bit of overkill, but you can't go wrong by making it too 'good'
by BaristaBob, Today, 1:52 pm in Coffees
Replies: 11 Views: 330

Where to buy Kona while in Kona

It's true, you need to know what you're looking for when in Hawaii. Specific to Kona coffee I believe there is an official ordinance that states the trees must be grown within 20 miles of the city, north, south, and east. Don't quote me on that, but it's something close. However, it doesn't keep retail sellers from making blends with
by mycatsnameisbernie, Today, 1:47 pm in Tips and Techniques
Replies: 8 Views: 467

Controlling brew pressure with E61 flow control device vs. OPV?

If you think about a typical double shot where at most 60 ml is brewed in around 30 seconds, that equates to a flow rate of 2 ml/sec. So you can see that the flow rate will be drastically limited by the water resistance of the coffee puck. Opening the flow control valve to a higher flow rate will allow
by Vindibona1, Today, 1:35 pm in Tips and Techniques
Replies: 8 Views: 467

Controlling brew pressure with E61 flow control device vs. OPV?

I know I'm about 6 mos late to the party, but I just received my new maching, a Quick Mill QM67 with a Lelit FCD, the same one that's on the Bianca. While the QM67 might (will?) have a different flow rate as the Bianca or other machines should they not have a FCD installed, I did some "mapping" that