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Steam Engine Coffee Maker
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FP_Fan
Senior Member


Joined: 8 Mar 2011
Posts: 20
Location: Germany
Expertise: I love coffee

Grinder: Baratza Virtuoso Preciso
Roaster: Severin popperroaster with...
Posted Sun Apr 14, 2013, 9:05am
Subject: Steam Engine Coffee Maker
 

steam engine causes agitation in reaction vessel
temperature controller keeps temperatures stable in reaction vessel after initial temperature drop when inserting coffee grounds
temperature stability 0.1 degrees Celcius
after 2:15 min. brewing time either paper filtering for a clean cup or press filtering for muddy but different tasting cup
refractometer check after brewing shows if the middle of Gold Cup Square has been hit
Yirgacheffe coffee beans freshly ground before brewing

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http://www.youtube.com/watch?v=x1OQ8Izj91w
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 8,032
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Apr 15, 2013, 5:12am
Subject: Re: Steam Engine Coffee Maker
 

EDITED

Well, it is, ..................... interesting.

. I have a couple of those steam engines and they take a while to come up to temp and to start to work then there is the extra cleaning and maint on them.

What was all the poking and prodding? If the prop in the "reaction vessel" was to support agitation, why were you manually agitating the brew?

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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FP_Fan
Senior Member


Joined: 8 Mar 2011
Posts: 20
Location: Germany
Expertise: I love coffee

Grinder: Baratza Virtuoso Preciso
Roaster: Severin popperroaster with...
Posted Mon Apr 15, 2013, 9:34am
Subject: Re: Steam Engine Coffee Maker
 

Hi Wayne,

indeed, the steam engine takes 20 minutes, just like the water, to heat. I used the time to manually operate the flywheel, so that the agitation function by propeller could be seen...

I also was, after the coffee grounds had been inserted, poking through the cap into the coffee grounds, that at first stay on top, even though agitation is quite intense, to ensure equal extraction.

You are right, I had to find a function for the steam engine, so that the machine not only produces superb coffee in a french press spare glass, but also entertains a steam punk like me...
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