Hand lever espresso machine

[Lyrebird]

That's an argument by reductio ad absurdam, it seems very unlikely either extreme would work.

I'm not claiming 58mm is some magic number that works better than any other size, it just makes sense to me to stick to the standard to maximise available options.

[level3ninja]

Hi LB,
Just out of curiosity. What would happen if a basket was wide enough, for example, that it allowed for only an even one particle high puck across the whole basket using the whole dose? How wide the basket would be? alternatively what would happen if the basket was so narrow and tall it allowed only one particle width for the whole length of the basket, with a single hole? I presume Machine designers and associates, all stakeholders, (some financial) do their sums, all things considered, each approach to sizing is optimised in the best interests for - success - ideally - however that has been defined.

I think one particle width or height are going to create more problems due to the non-cylindrical shape of coffee grounds. When you've got a 58mm x 10mm (or thereabouts) the gaps left between the particle and the wall are negligible. With one particle you'll only have the point of the particle touching, you'll also have particles not touching each other neatly or evenly. By the time you have 10mm+ it all averages out quite evenly (or you get channeling). I can only imaging a single particle width would mostly flow around the sides and underextract. One particle height would just fine the particles that touch the least and channel like mad, you'd also need to have the shower screen hold the particles in position or they'd just fly out of the way.

[OCD]

...Just out of curiosity. What would happen if a basket was wide enough, for example, that it allowed for only an even one particle high puck across the whole basket using the whole dose? How wide the basket would be? alternatively what would happen if the basket was so narrow and tall it allowed only one particle width for the whole length of the basket, with a single hole...

My guess would be:
On the one hand it would gush on a huge disc of a basket. On the other hand it would choke part way down a very long narrow unbasket like tube (water is more viscous than one might think).

Ps 49mm works ok on my Cremina.

[KopiOkaukau]

Here is the heater if you ever need one.

[KopiOkaukau]

Here is the video for coffee extraction https://v.youku.com/pad_show/id_XMzc...6059.1&source=

[aer0]

I am from the home of the Newton espresso machine, how did I not even know about this!

[mat-with-one-t]

Here is the heater if you ever need one. [ATTACH=CONFIG]21977[/ATTACH]

And here is a defibrillator, ‘cause if you use the heater, you’re likely to need one.

[Hornetb]

And here is a defibrillator, ‘cause if you use the heater, you’re likely to need one.

It's only 24V DC.

[mat-with-one-t]

ah. Whew. No worries