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Kyocera CM-50 modified for full range stepless grind
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Burner0000
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Joined: 28 Jul 2011
Posts: 1,010
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Mon Dec 24, 2012, 11:31am
Subject: Kyocera CM-50 modified for full range stepless grind
 

Thanks to the awesome distributors at Orphan Espresso, Hario, Kyocera and user "someguy" of CoffeeGeek I was able to make my Kyocera CM-50 a full range stepless hand grinder.  The other great thing is all of the parts are metal and will most likely out last the grinder itself at which time they can be simply swapped out. :)

Parts needed to do so

Grinder (Kyocera CM-50) or Hario Skerton
Skerton: Click Here
Kyocera CM-50: Click Here

OE PFP Low bearing kit
Click Here

2x M8 course thread nuts
Click Here

Burner0000: IMAG0210.jpg
(Click for larger image)
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fwtechwiz
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Joined: 19 Feb 2010
Posts: 528
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Tue Dec 25, 2012, 4:13am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

I second, definitely a recommended mod for this grinder.  I found that using a Nylok nut works just as well as using two standard nuts.  The Nylok nut locks in by itself, and won't move unless you move it with a wrench.  Attached is a pic of my solution for the burr stabilization, done before they came out with the lower bearing assembly.

fwtechwiz: Hario Skerton horizontal mod.jpg
(Click for larger image)
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fwtechwiz
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Joined: 19 Feb 2010
Posts: 528
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Tue Dec 25, 2012, 4:14am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

pic of the burr shaft mod to complete the stabilization

fwtechwiz: Hario Skerton vertical mod.jpg
(Click for larger image)
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Burner0000
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Joined: 28 Jul 2011
Posts: 1,010
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Tue Dec 25, 2012, 5:45am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

Nice! How are you making adjustments?  I mean with just the Nylock nut? Also I found that it's very hard to dial the grind back in.  How are you keeping track of each setting?

Also can you give me more info on how to install your mod along with the finished product?
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Burner0000
Senior Member


Joined: 28 Jul 2011
Posts: 1,010
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Tue Dec 25, 2012, 7:15am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

Nevermind.  I was able to find a recent post you posted showing what I need.
I will Try the Nylok.  Just trying to think of a good way to keep track of each grind setting.
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 528
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Mon Dec 31, 2012, 3:20am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

I keep track of my grind setting by measuring the distance from the top of the nylok nut to the top of the shaft (with handle removed) with a caliper.  When I reassemble the grinder, I set the nut back to the same distance.  Even then, I need to tweak the setting just a bit to dial it back in.  Usually only takes a shot or two.
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Burner0000
Senior Member


Joined: 28 Jul 2011
Posts: 1,010
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Mon Dec 31, 2012, 6:52am
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

Thanks :)   I have found a few mini calipers.  I am looking for something small like this.  
Click Here

Can you give me a good brand of a caliper?  I will check out some hardware stores around here.
Also how to you keep the burrs in place while adjusting?
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Burner0000
Senior Member


Joined: 28 Jul 2011
Posts: 1,010
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Wed Jan 2, 2013, 8:28pm
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

Thanks again for the fwtechwiz advise on the Nylock and caliper tip.  I got a good deal one one. I just need to get used to dialing in the grind.
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 528
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Thu Jan 3, 2013, 5:03pm
Subject: Re: Kyocera CM-50 modified for full range stepless grind
 

Burner0000 Said:

Thanks :)   I have found a few mini calipers.  I am looking for something small like this.  
Click Here

Can you give me a good brand of a caliper?  I will check out some hardware stores around here.
Also how to you keep the burrs in place while adjusting?

Posted December 31, 2012 link

I have a full size Craftsman that I've had forever, just use that one.
To adjust the grind, I just hold the handle while turning the adjustment nut with an open end wrench.  I tweak it 1/8 turn (or less) clockwise for finer, counter clockwise for coarser.
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