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Thread: Rocky burrs?

  1. #1
    Senior Member Yelta's Avatar
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    Rocky burrs?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    9 months ago after 8 years of excellent service I replaced the burrs on my Rocky, the improvement was quite noticeable, however after 9 months of use seems they may need replacing again!!!!
    Have adjusted them down as low as possible and still not fine enough, pulled them out and checked them today, noticed a number of nicks out of the edges, dont seem real sharp (finger nail test) 9 months and approx 18 kilos of beans doesnt seem real brilliant to me, is it possible I got a dud set?
    Thoughts on the problem would be appreciated.

    Cheers,

    Jon. :)

  2. #2
    A_M
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    Re: Rocky burrs?

    Quote Originally Posted by 09353C2431500 link=1262592724/0#0 date=1262592724
    9 months ago after 8 years of excellent service I replaced the burrs on my Rocky, the improvement was quite noticeable, however after 9 months of use seems they may need replacing again!!!!
    Have adjusted them down as low as possible and still not fine enough, pulled them out and checked them today, noticed a number of nicks out of the edges, dont seem real sharp (finger nail test) 9 months and approx 18 kilos of beans doesnt seem real brilliant to me, is it possible I got a dud set?
    Thoughts on the problem would be appreciated.

    Cheers,

    Jon. :) *
    Any thing is possible... *I have see it where minor stones / unwanted items of a small size have cause excessive wear...

    The only way to test beyond a doubt would be to have a hardness test performed on teh ORG burrs and on the ones you intend to use... *At least then you have a true bench mark... And a high res pic of the actual profile of the burrs...

    Other than a poorer quality burr set or damage buy items unidentified... Every thing else, is just conjecture and perception..

    As GW might say... Give me data and lots of it and then; intelligence can be gathered and an opinion formed... *;)

  3. #3
    Senior Member Yelta's Avatar
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    Re: Rocky burrs?

    Quote Originally Posted by 1F30393B2C133F303F393B333B302A5E0 link=1262592724/1#1 date=1262594357
    Quote Originally Posted by 09353C2431500 link=1262592724/0#0 date=1262592724
    9 months ago after 8 years of excellent service I replaced the burrs on my Rocky, the improvement was quite noticeable, however after 9 months of use seems they may need replacing again!!!!
    Have adjusted them down as low as possible and still not fine enough, pulled them out and checked them today, noticed a number of nicks out of the edges, dont seem real sharp (finger nail test) 9 months and approx 18 kilos of beans doesnt seem real brilliant to me, is it possible I got a dud set?
    Thoughts on the problem would be appreciated.

    Cheers,

    Jon. :) *
    Any thing is possible... *I have see it where minor stones / unwanted items of a small size have cause excessive wear...

    The only way to test beyond a doubt would be to have a hardness test performed on teh ORG burrs and on the ones you intend to use... *At least then you have a true bench mark...

    Other than a poorer quality burr set or damage buy items unidentified... Every thing else is just conjecture and perception..

    As GW might say... Give be data and lots of it and then, intelligence can be gathered and an opinion formed... *;)
    My main query is, should I have expected better than 9 months and 18 kgs from a new set of Rancilio burrs, or is that degree of wear acceptable?

  4. #4
    Mal Dimal's Avatar
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    Re: Rocky burrs?

    Gday Jon,

    Where did you source the replacement set from?

    Mal.

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    Re: Rocky burrs?

    Quote Originally Posted by 0E23272B264A0 link=1262592724/3#3 date=1262595153
    Gday Jon,

    Where did you source the replacement set from?

    Mal.
    Evening Mal,
    Coffee Parts. :)

  6. #6
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    Re: Rocky burrs?

    Hmmm....

    I really dont like to generalise but my own personal experience with burr-sets originating from a generic source, have left me feeling less than impressed and mirroring an experience similar to your own. I replaced the generic burrs with an original set and the difference is just like chalk and cheese. The generic versions seem to use a lesser quality steel than the originals and go blunt very quickly. I guess generics have their place, in that they can get you going in a pinch but for the long haul, its OEM all the way..... 8-)

    Mal.

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    Senior Member Yelta's Avatar
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    Re: Rocky burrs?

    Quote Originally Posted by 4B66626E630F0 link=1262592724/5#5 date=1262596661
    Hmmm....

    I really dont like to generalise but my own personal experience with burr-sets originating from a generic source, have left me feeling less than impressed and mirroring an experience similar to your own. I replaced the generic burrs with an original set and the difference is just like chalk and cheese. The generic versions seem to use a lesser quality steel than the originals and go blunt very quickly. I guess generics have their place, in that they can get you going in a pinch but for the long haul, its OEM all the way..... 8-)

    Mal.
    Can you suggest a supplier of the real McCoy Mal, PM will do. :)

  8. #8
    Mal Dimal's Avatar
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    Re: Rocky burrs?

    Id give the Site Sponsors a go first mate. The Coffee Barun would definitely be worth a try first up 8-)

    Mal.

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    Re: Rocky burrs?

    Quote Originally Posted by 0A27232F224E0 link=1262592724/7#7 date=1262599093
    Id give the Site Sponsors a go first mate. The Coffee Barun would definitely be worth a try first up 8-)

    Mal.
    Thanks Mal, will call em in the AM.

    Jon.

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    Re: Rocky burrs?

    Jon,

    Ive beening having grinder (and user) issues for a while. http://coffeesnobs.com.au/YaBB.pl?num=1260230459 I noticed you mentioned in that post that you are grinding close to zero like me.

    I replaced my burrs on Miss Lucy (Rocky guts for the grinder) with a Coffeeparts generic burr set and Ive been thinking along the same lines of buying a real Rancilio set with RR stamped on the back. I dont know if the generic burrs are the problem but the grind was great for a while after the change and Im now grinding only a few clicks off true zero again.

    Can you let me know if you have any more success with the real mcoy? I would love to know if it solves your problem.

    Cheers.

    Lacehim

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    A_M
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    Re: Rocky burrs?

    Quote Originally Posted by 6C41434548494D200 link=1262592724/9#9 date=1262606542
    Jon,

    Ive beening having grinder (and user) issues for a while. *http://coffeesnobs.com.au/YaBB.pl?num=1260230459 I noticed you mentioned in that post that you are grinding close to zero like me.

    I replaced my burrs on Miss Lucy (Rocky guts for the grinder) with a Coffeeparts generic burr set and Ive been thinking along the same lines of buying a real Rancilio set with RR stamped on the back. *I dont know if the generic burrs are the problem but the grind was great for a while after the change and Im now grinding only a few clicks off true zero again.

    Can you let me know if you have any more success with the real mcoy? *I would love to know if it solves your problem.

    Cheers.

    Lacehim
    Yea... This would be interesting... I mean those burrs did not look that bad.... *I also have a spare set from teh same place... Just never got around to changing them.. *Maybe it was a good thing *:-/

    Save topic as a Fav *;)

  12. #12
    Senior Member Yelta's Avatar
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    Re: Rocky burrs?

    Quote Originally Posted by 4D60626469686C010 link=1262592724/9#9 date=1262606542
    Jon,

    Ive beening having grinder (and user) issues for a while. *http://coffeesnobs.com.au/YaBB.pl?num=1260230459 I noticed you mentioned in that post that you are grinding close to zero like me.

    I replaced my burrs on Miss Lucy (Rocky guts for the grinder) with a Coffeeparts generic burr set and Ive been thinking along the same lines of buying a real Rancilio set with RR stamped on the back. *I dont know if the generic burrs are the problem but the grind was great for a while after the change and Im now grinding only a few clicks off true zero again.

    Can you let me know if you have any more success with the real mcoy? *I would love to know if it solves your problem.

    Cheers.

    Lacehim
    Will keep you posted, have to locate a set of Rancilio burrs first.
    As I said in my first post the original set lasted for years, the replacement set seems to have given up in less than 12 months.

    Cheers,

    Jon. :)

  13. #13
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    Re: Rocky burrs?

    Burrs ordered from Jetblack Espresso this morning, along with a new Synesso double basket and spring.
    They were very helpful. :)

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    Re: Rocky burrs?

    If you dont mind me asking how much are the burrs. Did they confirm that they are genuine Rancilio burrs?

    Quote Originally Posted by 6C50594154350 link=1262592724/12#12 date=1262647284
    new Synesso double basket and spring.
    Did you go ridged or ridgeless?

    Cant wait to hear the results of the burr change. Im actually back using my original burrs with better results. Mind you Im on still on a learning curve...

    I also have to buy new burr screws because they are getting a bit tired after all the stuffing around Ive been doing.

  15. #15
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    Re: Rocky burrs?

    Quote Originally Posted by 775A585E5352563B0 link=1262592724/13#13 date=1262652533
    If you dont mind me asking how much are the burrs. *Did they confirm that they are genuine Rancilio burrs?

    Quote Originally Posted by 6C50594154350 link=1262592724/12#12 date=1262647284
    new Synesso double basket and spring.
    Did you go ridged or ridgeless?

    Cant wait to hear the results of the burr change. *Im actually back using my original burrs with better results. *Mind you Im on still on a learning curve...

    I also have to buy new burr screws because they are getting a bit tired after all the stuffing around Ive been doing.
    Ridgeless mate.
    Use the right size screwdriver and make sure the blade has nice square/clean edges (not rounded) when changing burrs will save butchering the screw slots, my Rocky is over 8 years old, have lost count of the number of times Ive removed the burrs to give it a good clean and the original screw slots are like new. :)

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    Re: Rocky burrs?

    Have your burrs arrived? Do they look different other generic brand burrs?

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    Re: Rocky burrs?

    Quote Originally Posted by 6F4240464B4A4E230 link=1262592724/15#15 date=1262911051
    Have your burrs arrived? *Do they look different other generic brand burrs?
    Not here yet, seems a little slow, maybe today.
    The generic burrs look exactly the same as the Rancilio, except they dont have the RR stamped on them, its not the looks or shape that is the problem but the low grade steel they are fabricated from.

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    Re: Rocky burrs?

    The burrs have arrived, and they are genuine Rancilio parts :D
    Will fit them this arvo and let you know the result. :)

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    Re: Rocky burrs?

    New burrs installed, did they make a difference? you bet, have just had my first decent shot in over a fortnight, that was using the double basket that came with the Bezera.
    Cant believe how rapidly the old burr set deteriorated, they were fine when I bought the Domus 2 months ago, from there they went to virtually useless in the space of a month.
    Very pleased with the outcome. :D

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    Re: Rocky burrs?

    Jon,

    Considering the Rancilio burrs only cost a few dollars more Im buying a set to test them out.

    The generic ones can sit in the "useless drawer" with the plastic coffee tamper & manual (totally useless).

    Oh and had Tim Adams over for a training session last night and he mentioned going up to a 18g basket (I think the rancilio is 14g). What size Synesso double basket did you get and did it make a difference to your coffee?

  21. #21
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    Re: Rocky burrs?

    Quote Originally Posted by 406D6F696465610C0 link=1262592724/19#19 date=1262937009
    What size Synesso double basket did you get
    Looks like an 18 gram Lacehim, yet to try it, have started another thread on the topic in general coffee related.

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    Re: Rocky burrs?

    Jon,

    You still happy with your RR genuine burrs? When you changed them did you find that the settings changed? ie your grinding further away from true zero but your coffee is no more coarse than before.

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    Re: Rocky burrs?

    On the general question or burr replacement how do you tell if burrs need replacement ?

    Reason being I have recently acquired a secondhand Compak K8 (80mm burrs). The burrs look OK with no chips, but as this is my first decent grinder, Im not sure how to tell whether they are still sharp or should be replaced.

    Cheers
    Simon


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    Re: Rocky burrs?

    Quote Originally Posted by 12080C0E0F0C040D03610 link=1262592724/22#22 date=1267742286
    On the general question or burr replacement how do you tell if burrs need replacement ?

    Reason being I have recently acquired a second hand Compak K8 (80mm burrs). The burrs look OK with no chips, but as this is my first decent grinder, Im not sure how to tell whether they are still sharp or should be replaced.

    Cheers
    Simon

    Generally look to see if the leading edges of the burr plates are sharp

    Run you fingernail "softly" along the leading edge and you will be able to determine if they are sharp or blunt

    KK

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    Re: Rocky burrs?

    Quote Originally Posted by 4D57535150535B525C3E0 link=1262592724/22#22 date=1267742286
    On the general question or burr replacement how do you tell if burrs need replacement ?

    Reason being I have recently acquired a secondhand Compak K8 (80mm burrs). The burrs look OK with no chips, but as this is my first decent grinder, Im not sure how to tell whether they are still sharp or should be replaced.

    Cheers
    Simon
    Hello Simon,

    Run a fingernail against the burr cut. You should feel sharp, not rounded edges and be almost able ro shave a slither of nail away.

    If a grinder is cleaned regularly and barring stones, a set of burrs should do at least 200kg and at K8 size, more like 400kg or better...

    2mcm

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    Re: Rocky burrs?

    Thanks KK and 2mcm !

    Will have a look when I get home. Also if my wife taste buds are any indication, she recons the coffee doesnt taste as good from the K8 compared with the EM0480 :o so I suspect the burrs are tired.

    Cheers
    Simon



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