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Gaggia Classic and naked portafilter trouble
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PJK
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PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

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Posted Wed Feb 6, 2013, 10:56am
Subject: Re: Gaggia Classic and naked portafilter trouble
 

Hi Ceridan,

A bottomless portafilter is a very humbling  thing.  I have had mine for several years and I sure can't say that I never get a squirty.

Some of what I learned:

1.Grind and tamp should be adjusted for about 25 second shot time.

  1. You want your grounds clump and static free. I stir my grounds in the basket with a metal canning funnel in the basket with a wire whisk.

  2. Tamp after the basket is in the handle and avoid any shock or jarring of the grounds after the tamp.

  3. I also put the handle and basket on a dental vibrator  while tamping.

The picture below is my basket, whisk, canning funnel, and vibrator.  The funnel is modified to fit into my Rocky grinder such that I grind right into the funnel and basket.  "I civilized my Rocky"

Phil

Ceridan Said:

Thank you all for the replies.

Basically I should:
- Grind finer.
- Tamp more thoroughly (I admit I have to practice there and get a better tamper).
- Aim for a double shot for the time being.

And as an added benefit get this cool glass :)
http://www.espressoparts.com/EPMEAS
(Good luck finding them in Czechia, probably I'll just create one using and ordinary small glass :) )

Posted February 5, 2013 link



PJK: MVC-003S.JPG
(Click for larger image)

 
Philip J. Keleshian
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D4F
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Joined: 15 Mar 2012
Posts: 2,023
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Wed Feb 6, 2013, 12:29pm
Subject: Re: Gaggia Classic and naked portafilter trouble
 

Ceridan Said:

Please, which of the hoses is for the input and which for the output? Are we talking about these to normally connected to the GS's water tank?

Posted February 6, 2013 link

Click Here (www.partsguru.com)

I refer to this diagram frequently to find answers.  You may want it in favorites.  I also looked in my machine.  As you face the machine the hose most rightward, most toward the outside of the machine is the OPV return hose, #35.  The most central is the water pickup, #48.  I pulled out the tank and put a fairly large glass/pitcher under the intake hose.  I used a regular glass to make it easy on the output/OPV side.  Turn on the pump with a blind basket in the PF and start timing the OPV discharge from first discharge in the glass, a few seconds after pump on.  Time for 15, or 30 seconds and convert to flow.

You will no doubt run a couple of times to check and perhaps adjust OPV.  Allow the pump to rest for about 2 minutes between runs.  They are designed for intermittent duty cycle and rest.

 
D4F also at
http://www.gaggiausersgroup.com/
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