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Adding gauges to Oscar
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tinytot2
Senior Member


Joined: 31 Dec 2012
Posts: 113
Location: Wisconsin
Expertise: I like coffee

Espresso: NS Oscar
Grinder: Vario W
Drip: Breville YouBrew
Posted Sun Jun 16, 2013, 8:44am
Subject: Adding gauges to Oscar
 

I think I'm going to have these gauges from Chris Coffee installed on my Oscar.  I've read some posts where other people have added boiler and group pressure gauges, but was wondering if anybody here has done it.  

click here  Boiler


click here  Group
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,772
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 Jun 17, 2013, 6:43am
Subject: Re: Adding gauges to Oscar
 

MOD NOTE:
Moved to mods and restorations forum.
.....................................................






I suppose you can add them, I don't remember anyone doing it. The issue I see is connecting into the Oscar. The boiler is not really made for a gauge and you will need to splice into the brew water line from the boiler to the group head for brew pressure. There is not a lot of room inside Oscar to add gauges and the fittings that are required, my personal opinion is that a vacuum breaker will be a better value and more useful, I know it is fun to watch the gauges but I really don't pay attention to the gauges on my machine. Once the temp is set and the brew pressure is set, they stay pretty well in the same reading zone.

My temp does go up and down but I know the normal swing of the Pstat and then when you tap off steam, of course, the pressure will drop in the boiler.

I suppose you could add the boiler temp gauge into the steam wand system, before it goes through the valve, that would indicate the pressure in the boiler and the line to the brew group will give you brew pressure

Do what you want, you have my two cents, YMMV!

 
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!

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DanoM
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Joined: 20 Mar 2013
Posts: 372
Location: Los Angeles
Expertise: I love coffee

Espresso: Bezzera Strega, '84 La...
Grinder: Compak K10, Kludge grinder,...
Posted Mon Jun 17, 2013, 10:21am
Subject: Re: Adding gauges to Oscar
 

calblacksmith Said:

my personal opinion is that a vacuum breaker will be a better value and more useful, I know it is fun to watch the gauges but I really don't pay attention to the gauges on my machine.

Posted June 17, 2013 link

I'd love to have meters on my Oscar too, but I'm guessing I wouldn't use them much once I have things dialed in also.  Meters are always good to have though when first tuning in your shots, and the Oscar has plenty of room on the panel - if it were me I'd consider a dual display meter too.

I don't have a vacuum breaker on my Oscar, but find that if I have the steam wand open 1 full turn just to the steam is off point, I don't seem to need one.  As the system heats up I'll get a little drip from the steam wand into the tray, and once it's heated up the seal on the steam wand seems to stop the drip.  40 minutes after power up it's full pressure and ready to go with lots of steam, but at 20 minutes I usually release the steam pressure and within 1-2 minutes while getting other prep ready it seems good to brew.  This will probably cause more scale buildup and wear on the steam valve, so that's something to consider too.
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