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Oscar Pump Problems (again)
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Discussions > Espresso > Machines > Oscar Pump...  
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Markarian
Senior Member
Markarian
Joined: 27 Jun 2012
Posts: 656
Location: Seattle Area
Expertise: I love coffee

Espresso: ECM Technika IV Profi WT-WC
Grinder: Baratza Forte AP, HG One
Vac Pot: Bunn Trifecta MB
Drip: Moka, Aeropress, Hario V60
Roaster: Behmor 1600
Posted Tue Dec 18, 2012, 1:19pm
Subject: Re: Oscar Pump Problems (again)
 

I'll try using some steel wool on them, since I seem to remember you mentioning that. My steel wool has chemicals all over it, so I'll have to rise the VST for a minute before using it. Would the side channeling explain my mushy puck and squirrely shots?
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,009
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Tue Dec 18, 2012, 1:28pm
Subject: Re: Oscar Pump Problems (again)
 

no idea what squirrely means.  My pucks are a bit damp but not mushy.  Side channeling is easy to see with naked portafilter.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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Markarian
Senior Member
Markarian
Joined: 27 Jun 2012
Posts: 656
Location: Seattle Area
Expertise: I love coffee

Espresso: ECM Technika IV Profi WT-WC
Grinder: Baratza Forte AP, HG One
Vac Pot: Bunn Trifecta MB
Drip: Moka, Aeropress, Hario V60
Roaster: Behmor 1600
Posted Tue Dec 18, 2012, 3:32pm
Subject: Re: Oscar Pump Problems (again)
 

Okay, used the steel wool and upped my dose from 18.7 (stock NS basket) to 19.5 for the VST. How's this look? I think it might be fixed!

Markarian: 8284839705_a0d5127986_n.jpg
(Click for larger image)
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,009
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Tue Dec 18, 2012, 5:19pm
Subject: Re: Oscar Pump Problems (again)
 

very pretty. Is it smooth on the back side?  I can't tell from the photo.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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frank828
Senior Member


Joined: 23 Feb 2011
Posts: 581
Location: Los Angeles
Expertise: Professional

Espresso: GS3
Grinder: RoburE, Kenia
Vac Pot: Hario
Drip: Brazen, CCD, Aeropress, V60,...
Roaster: Behmor, Air Crazy
Posted Tue Dec 18, 2012, 5:24pm
Subject: Re: Oscar Pump Problems (again)
 

looks great to me!  *you showoff* :P
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Markarian
Senior Member
Markarian
Joined: 27 Jun 2012
Posts: 656
Location: Seattle Area
Expertise: I love coffee

Espresso: ECM Technika IV Profi WT-WC
Grinder: Baratza Forte AP, HG One
Vac Pot: Bunn Trifecta MB
Drip: Moka, Aeropress, Hario V60
Roaster: Behmor 1600
Posted Tue Dec 18, 2012, 6:28pm
Subject: Re: Oscar Pump Problems (again)
 

I think it looks decent on the back, it was pretty consistent. I'm getting less side channeling now, definitely. Every shot I pull is drinkable, at the very least, so that's definitely a plus. Photo HAS been developed and enhanced a bit to show off the tiger striping. I put a lamp on the side of the Oscar because the LEDs weren't quite enough for a decent exposure. This is fresh Tanzanian Peaberry I roasted in my old 1987 Popcorn Pumper last night.

I realized I got sidetracked and didn't tell you what had happened. So even though the new valve was stripped, my friend was determined not to give up on the plumber's tape and kept piling it on until it finally held! We abused the seal--putting it through backflush after backflush, let the HX heat up a few times. Not a drop. *fingers crossed* If it leaks again, NS sent me an actual spacer I could JB Weld onto the group and create a new socket for the valve without permanently affixing it. Whew!
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,009
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Tue Dec 18, 2012, 9:10pm
Subject: Re: Oscar Pump Problems (again)
 

Sounds like they took care of you.  Good job on the pull it looks good to me.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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