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GaGeek
Senior Member


Joined: 11 Jan 2014
Posts: 6
Location: Georgia
Expertise: I love coffee

Espresso: Rancillio Silvia
Grinder: Rancillio Rocky
Vac Pot: Technivorm Moccamaster...
Roaster: Hearthware iRoast2
Posted Sat Jan 11, 2014, 6:38pm
Subject: New member Silvia question
 

Although a new member here I've had the v2 Silvia / Rocky combo since summer of 06. Used it quite often when we 1st purchased, but it ended going into retirement a couple of years later.

Just before thanksgiving I brought it out of retirement, cleaned it up, new screen and gasket, also descaled. Am trying to get shots dialed in. To help in this endeavor I purchased a naked portafilter. It seems that whenever I use the naked portafilter I get spraying against the back and grounds on the top rear of the portafilter opposite the handle, this does not happen when I use the port with the double beak. Is this a problem with the grind or tamp, or maybe the fit is not as snug as the original portafilter.

In a effort to get more consistent pulls and tired of temp surfing added a pid w/pre infusion Friday. Shots are a little sour, brew temp on the unit was set to 221 , could this be a temp issue or a grind issue. Coffee was roasted on the 1st and probably to a city - city+ roast.

Any help or advice greatly appreciated.
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frcn
Senior Member
frcn
Joined: 23 Dec 2001
Posts: 3,411
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
Drip: Behmor Brazen, Bunn A10 mod...
Roaster: computer controlled Hottop,...
Posted Sat Jan 11, 2014, 7:56pm
Subject: Re: New member Silvia question
 

It is likely that you always had the spraying. The bottomless is just revealing it.
Among notable causes of this:
- To much coffee causing disruption to the puck when locking in.
- Too coarse of a grind
- Worn burrs
- Poor distribution before tamping
- Uneven tamping (not level)
** and the number one answer... Our survey says...
- Stale coffee

 
Visit My Website
www.EspressoMyEspresso.com
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marosmith
Senior Member
marosmith
Joined: 15 Dec 2013
Posts: 87
Location: Lafayette, Oregon
Expertise: I love coffee

Espresso: NS Oscar, Silvia V2
Grinder: NS MCF, Baratza Encore
Posted Sun Jan 12, 2014, 12:13pm
Subject: Re: New member Silvia question
 

frcn Said:

It is likely that you always had the spraying. The bottomless is just revealing it.
Among notable causes of this:
- To much coffee causing disruption to the puck when locking in.
- Too coarse of a grind
- Worn burrs
- Poor distribution before tamping
- Uneven tamping (not level)
** and the number one answer... Our survey says...
- Stale coffee

Posted January 11, 2014 link

Assuming good coffee I would say its a combination of course grind and/or nit tamping hard enough.

For my silvia I start as fine as I can go where I choke the machine, then I adjust tamp/ grind until I get a nice, slow, 30 second + shot.

I'm no pro or anything but I can get pretty good shots from my non-PID silvia doing this.

Make sure your dosing is the same every time.
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GaGeek
Senior Member


Joined: 11 Jan 2014
Posts: 6
Location: Georgia
Expertise: I love coffee

Espresso: Rancillio Silvia
Grinder: Rancillio Rocky
Vac Pot: Technivorm Moccamaster...
Roaster: Hearthware iRoast2
Posted Sun Jan 12, 2014, 5:21pm
Subject: Re: New member Silvia question
 

Marosmith, frcn thank you

Much better pulls today, went with a finer grind, and changed my dosing and tamp. I was dosing and then giving the portafilter a tap to the bottom on the counter, dose a little more, tap, dose level off with a straight edge and then tamp and polish. was getting a result where the puck was level but where at least half the tamps body was above the filters surface, top of puck probably 1/8th from the top. Changed to eliminate the tap to the bottom and when tamped the top of the tamp even with the top of the portafilter, top of puck about 1/4" from the top. Did not have any squirting or residue on the top edge of the portafilter.

Also lowered the set temp on the PID from 221 to 218. Didn't get any of sourness that I had yesterday, but still not where I want it. With a 2oz 25 sec pull it started blonding about the 22-23 sec mark. Will experiment a little more with the grind and tamp. For a double basket what is the correct dosing amount?

I'm going to assume the coffee was not my culprit as it was actually roasted back on the 6th of Jan and not the 1st, I had missread the roast date on the label.

frcn...love your website, consulted it quite often when I started my journey backk in 06. I'll have to revisit it.
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frcn
Senior Member
frcn
Joined: 23 Dec 2001
Posts: 3,411
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
Drip: Behmor Brazen, Bunn A10 mod...
Roaster: computer controlled Hottop,...
Posted Sun Jan 12, 2014, 5:46pm
Subject: Re: New member Silvia question
 

On my website www.EspressoMyEspresso.com, check out this article: 12 - EASY GUIDE TO BETTER ESPRESSO AT HOME
That should keep you busy for around a year or two, but you could round up to the nearest decade.

 
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www.EspressoMyEspresso.com
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marosmith
Senior Member
marosmith
Joined: 15 Dec 2013
Posts: 87
Location: Lafayette, Oregon
Expertise: I love coffee

Espresso: NS Oscar, Silvia V2
Grinder: NS MCF, Baratza Encore
Posted Sun Jan 12, 2014, 6:28pm
Subject: Re: New member Silvia question
 

GaGeek Said:

Marosmith, frcn thank you

Much better pulls today, went with a finer grind, and changed my dosing and tamp. I was dosing and then giving the portafilter a tap to the bottom on the counter, dose a little more, tap, dose level off with a straight edge and then tamp and polish. was getting a result where the puck was level but where at least half the tamps body was above the filters surface, top of puck probably 1/8th from the top. Changed to eliminate the tap to the bottom and when tamped the top of the tamp even with the top of the portafilter, top of puck about 1/4" from the top. Did not have any squirting or residue on the top edge of the portafilter.

Also lowered the set temp on the PID from 221 to 218. Didn't get any of sourness that I had yesterday, but still not where I want it. With a 2oz 25 sec pull it started blonding about the 22-23 sec mark. Will experiment a little more with the grind and tamp. For a double basket what is the correct dosing amount?

I'm going to assume the coffee was not my culprit as it was actually roasted back on the 6th of Jan and not the 1st, I had missread the roast date on the label.

frcn...love your website, consulted it quite often when I started my journey backk in 06. I'll have to revisit it.

Posted January 12, 2014 link

I could be wrong but I think brew temp should be more around 200.
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GaGeek
Senior Member


Joined: 11 Jan 2014
Posts: 6
Location: Georgia
Expertise: I love coffee

Espresso: Rancillio Silvia
Grinder: Rancillio Rocky
Vac Pot: Technivorm Moccamaster...
Roaster: Hearthware iRoast2
Posted Sun Jan 12, 2014, 7:11pm
Subject: Re: New member Silvia question
 

Marosmith...the temp of 218 set on the PID is at the boiler, but the brew temp should be from what I've read about 20 deg less putting the brew temp at about 198.
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GaGeek
Senior Member


Joined: 11 Jan 2014
Posts: 6
Location: Georgia
Expertise: I love coffee

Espresso: Rancillio Silvia
Grinder: Rancillio Rocky
Vac Pot: Technivorm Moccamaster...
Roaster: Hearthware iRoast2
Posted Sun Jan 12, 2014, 7:14pm
Subject: Re: New member Silvia question
 

Thanks ..So many variables, hopefully will not take the next decade to get dialed in.
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