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Taskete
Senior Member


Joined: 27 May 2013
Posts: 9
Location: Lund - Sweden
Expertise: Just starting

Posted Thu Jun 6, 2013, 2:58pm
Subject: Listen to this! [Video]
 

Have a coffee grinder (Casadio MD Istantaneo) who has been a bit tricky.

As it is entirely stepless I have tune it until it gets good. Now I want to go to a finer setting but I hear this sound that makes me worry. It sounds like that the conical grinding discs(?) goes against each other.

Is this a bad sound and should I not go to a finer setting?
Is this OK for conical grinder?


(excuse my bad english)

/Marcus


http://youtu.be/BjgRbbRjY9g
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Fri Jun 7, 2013, 7:34am
Subject: Re: Listen to this! [Video]
 

You are correct, that is the sound of the burrs rubbing, don't do that. You are as fine as you can go, there is no more room to go finer, you get what you get.

Conical or flat I did not look it up but do not rub the burrs.

 
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!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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NobbyR
Senior Member
NobbyR
Joined: 10 Jul 2011
Posts: 2,051
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 Fri Jun 7, 2013, 7:47am
Subject: Re: Listen to this! [Video]
 

calblacksmith Said:

Conical or flat I did not look it up but do not rub the burrs.

Posted June 7, 2013 link

+1 It wears the burrs down.

 
***
"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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Taskete
Senior Member


Joined: 27 May 2013
Posts: 9
Location: Lund - Sweden
Expertise: Just starting

Posted Fri Jun 7, 2013, 1:34pm
Subject: Re: Listen to this! [Video]
 

But if I don't go to a finer setting the grind is to coarse and cup will fill up in 10 sec. I use 20 gram and tamp hard, more than 30 pounds.
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Fri Jun 7, 2013, 1:44pm
Subject: Re: Listen to this! [Video]
 

Then your grinder is not able to grind for espresso regardless of what the manufacturer says. If you are within the return window, you will be better off returning the grinder to the seller and buying a grinder that IS able to grind for espresso.
Tamping will NOT alter the flow of the espresso. The sole reason for the tamp is to remove voids in the puck. To provide a even and consistent bed for the coffee to flow through. You can not match the pressure that the water does. The machine is using water at about 140 pounds PER SQUARE INCH. You have over 5 square inches in a 58mm porta filter, total water pressure is over 700 pounds pressing down on the coffee bed. A 10 or 20 pound difference in the tamp makes no difference to the coffee pressure and flow.

THE GRINDER IS WHAT ADJUSTS THE SHOT, THE GRINDER IS MORE IMPORTANT THAN THE MACHINE, IF YOU CAN NOT GRIND FINE ENOUGH TO CHOKE YOUR MACHINE, YOUR GRINDER IS NOT ABLE TO GRIND FOR ESPRESSO.

Sorry about the "shouting" above but it really is that true and that important.

 
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!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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Taskete
Senior Member


Joined: 27 May 2013
Posts: 9
Location: Lund - Sweden
Expertise: Just starting

Posted Fri Jun 7, 2013, 2:33pm
Subject: Re: Listen to this! [Video]
 

Thanks for all the help!

The grinder has a built in tamp so it would be crazy if it didn't grind for espresso.

Look att this: http://youtu.be/PgVDU_sncCk

http://www.youtube.com/watch?v=c5FG5Km_9Cc&t=0m40s
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russel
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russel
Joined: 12 Mar 2010
Posts: 450
Location: Los Angeles
Expertise: Professional

Espresso: Conti Princess 2grp, GS/3...
Grinder: Super Caimanos x2, Forte BG,...
Drip: V60, Kalita Wave, Clever,...
Posted Fri Jun 7, 2013, 8:58pm
Subject: Re: Listen to this! [Video]
 

That is crazy.  It's like someone took apart a Nino and crammed it into a plastic box.  

I was going to suggest that your flat burrs where miss aligned maybe with some grounds or oils bult up underneath, but it seems that you have a conical grinder.  There may still be an alignment problem that is responsible for both the noise and the corse grind.  I'm not sure if you would be able to correct that yourself.  I don't know how much this grinder costs, but you might want to find a local tech that can check it out...
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NobbyR
Senior Member
NobbyR
Joined: 10 Jul 2011
Posts: 2,051
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 Sat Jun 8, 2013, 1:30am
Subject: Re: Listen to this! [Video]
 

calblacksmith Said:

Then your grinder is not able to grind for espresso regardless of what the manufacturer says.

Posted June 7, 2013 link

Taskete Said:

The grinder has a built in tamp so it would be crazy if it didn't grind for espresso.

Posted June 7, 2013 link

Even though I wouldn't exemplify this to the built-in tamper (I know a grinder that has espresso in its type designation and is far from being able to perform up to this name), the Casadio Istantaneo is a semi-commercial, fast, stepless grinder with conical burrs that ought to be able to grind fine enough for espresso. It can even be used in small coffee bars, for example.

There are several possible explanations why yours doesn't:
  • Your beans are stale.
  • The Casadio is susceptible to transport damages. So maybe yours got spoiled during shipping.
  • If you bought a used grinder, the burrs might be worn-out.
  • The burrs are miss-aligned.

 
***
"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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Taskete
Senior Member


Joined: 27 May 2013
Posts: 9
Location: Lund - Sweden
Expertise: Just starting

Posted Mon Jun 10, 2013, 3:28pm
Subject: Re: Listen to this! [Video]
 

Look at these pictures, they show where it is worn. I think this is my fault. Is this a problem I need to fix?

http://imageshack.us/a/img825/2537/33640058.jpg
http://imageshack.us/a/img826/5665/80170166.jpg

I have filmed it, it looks to be consistent worn:

http://www.youtube.com/watch?v=D41pU9pcabg

Do I even need to grind finer? This is the setting just before the grinding "discs" touch each other:
I use 20 g of coffee and the 6 cl glas fill up i under 8 sec.
http://img560.imageshack.us/img560/2615/39389017.jpg

thanks!
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CoffeeRon
Senior Member


Joined: 26 Apr 2009
Posts: 753
Location: Eatonville, Wa
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: Macap M7D, Pharos, Vario W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Mon Jun 10, 2013, 7:39pm
Subject: Re: Listen to this! [Video]
 

I can't speak for your grinder for sure but I know many ( maybe all) grinder burrs have an area that they will rub first before they will hurt the teeth. I believe the area that I'm seeing in the pictures that you believe to be worn is in fact that area- which is to say it's supposed to look like that. If someone knows better please speak up. That would still leave the question- what is the problem?

I would go back to NobbyRs' list of possibilities, excluding worn out burrs as in the pictures yours appear to be sharp. What beans are you using? When were they roasted? Did it grind other beans properly? You said you had it tuned good but now need to go finer, so it was making proper espresso with other beans? A little more background information would help.
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