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Coarse grind with Cimbali Junior Grinder
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Discussions > Espresso > Grinders -... > Coarse grind...  
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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Mon Jun 24, 2013, 11:17am
Subject: Coarse grind with Cimbali Junior Grinder
 

Hi all! I need your collective expertise. I recently bought a used Cimbali Junior flat burr grinder. The grind was coarse, so I changed burrs... but the grind is still coarse. I can adjust all the way down to 1, and it seems like the burrs are not touching evenly. When I dismantled the burr carrier to examine everything, the top burr (the stationary one) had a blemish on one side. Any thoughts on getting this thing lined up properly? The carrier screws in without a hitch, so it isn't cross threaded. The burrs seem to lie flat on the seating surfaces.. could it be the bearings? Or would that cause a general wobble?
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NobbyR
Senior Member
NobbyR
Joined: 10 Jul 2011
Posts: 1,991
Location: Germany
Expertise: I love coffee

Espresso: Poccino Opus One, Ariete
Grinder: Eureka Mignon Istantaneo
Vac Pot: N/A
Drip: Melitta Linea Unica de Luxe
Roaster: N/A
Posted Tue Jun 25, 2013, 3:14am
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

The La Cimbali Junior grinder should be capable of grinding fine enough for espresso. What you haven't told us yet is what kind of beans you are using and especially how fresh they are. Have you been trying to pull single or double shots? What dose do you use?

 
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"This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,479
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 Tue Jun 25, 2013, 3:50am
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

Mod note: moved to grinders

 
In real life, my name is
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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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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Tue Jun 25, 2013, 9:48am
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

The beans are fresh, home roasted. They make fantastic espresso on my Gaggia MD-85 grinder. I'm pretty sure there is an issue of some kind with the Cimbali.. just looking for ideas, since I have run out of things to try.
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Flori
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Joined: 18 Apr 2013
Posts: 114
Location: USA
Expertise: I love coffee

Posted Thu Jun 27, 2013, 7:42pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

if you could tell us what is the bean type you are trying to grind on it, we can advise you on how long or what settings you can use to better get the grind you preferred.

Flori
Blogger, Coffeeloversofworld.com
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CoffeeRon
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CoffeeRon
Joined: 26 Apr 2009
Posts: 654
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: K-30 Vario,Pharos, Vario-W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Thu Jun 27, 2013, 9:08pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

Sorry to hear about your problem. Is there any sign that the grinder has been dropped? Do you see anything apparently out of place or misaligned inside-  with the upper burr removed? If you're not comfortable with further disassembly your best course of action may be to take it to a repair shop. If nothing else they may just give it a quick look and tell you if some minor repairs look to be required or not.
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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Fri Jun 28, 2013, 4:23pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

It's definitely not the beans. These are green coffee beans from Sweet Marias which I roast myself. These beans make perfect espresso in my other grinder. The beans are not in question. I can see that the burrs are not lined up properly by the blemish on one side of the upper burr, which indicates that the burrs are not contacting equally. I'm really interested in ideas as to why the burrs are not perfectly flush with each other.

It does not appear that the grinder has been dropped. It is in perfect condition, cosmetically. I can take it apart further.. I actually love tinkering with these types of things. Do you know what the easiest way to remove the main nut on the shaft of this thing is?
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CoffeeRon
Senior Member
CoffeeRon
Joined: 26 Apr 2009
Posts: 654
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: K-30 Vario,Pharos, Vario-W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Fri Jun 28, 2013, 6:05pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

I know on mine I can poke a screwdriver or such into the discharge chute to stop the rotation (the paddlewheels jam against it). May be reverse thread, I don't recall even on mine which may be different.
When you changed the burrs were you VERY careful to clean the mating surfaces well? Possibly something lodged under a burr preventing it from seating level?
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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Fri Jun 28, 2013, 6:35pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

Ok, I will try the screwdriver in chute trick. That sounds like it should work.

Yes, I actually took them back off three times to make sure there was nothing underneath. The burrs themselves and the mating surfaces seem to be fine. I'm wondering if maybe someone took the grinder apart at some point to change the bearings and did not put it back together correctly. We shall see!! Well, if it's not obvious then we might not...
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CoffeeRon
Senior Member
CoffeeRon
Joined: 26 Apr 2009
Posts: 654
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: K-30 Vario,Pharos, Vario-W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Fri Jun 28, 2013, 8:16pm
Subject: Re: Coarse grind with Cimbali Junior Grinder
 

Something else just occurred to me. On my grinder the upper burr assembly is in two pieces. The burr doesn't actually turn when I turn the top to adjust. The two pieces are assembled with a very large stiff spring holding the burr carrier down. If the two pieces were assembled wrong it could possibly cock the upper burr a bit. On mine I don't see how it could be assembled wrong but possibly yours is the same but different- if someone took it apart and reassembled it wrong it could be a problem.
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