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Thread: Help Rancilio Rocky - Making weird noises

  1. #1
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    Help Rancilio Rocky - Making weird noises

    Hi,

    Ive been using my Rancilio Rocky for about 9 months and its started to make some weird noises and vibrations when I turn it on. Its hard to explain so I created a quick video here:

    http://<br /> http://members.iinet.n...20Problems.wmv

    At first I thought it was a rock or something in it... no luck. Ive checked the burrs and there is nothing obvious. Ive changed the power point to ensure its not a dud power socket. Ive ensured the grinder is flat/stable on the desk. The noise happens regardless of whether there are beans in it or not. Ive given the grinder a little shake to see if there is anything loose in it, ive given it a thorough clean - no luck with any of the above.

    Its hard to see in the video but the vibration is quite intense, like there is something in it or the motor is turning on/off quickly. It even makes it jump/move on the table.

    Any ideas?
    Cheers,
    Gotrec



  2. #2
    A_M
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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 012932342325460 link=1234006135/0#0 date=1234006135
    Hi,

    Ive been using my Rancilio Rocky for about 9 months and its started to make some weird noises and vibrations when I turn it on. Its hard to explain so I created a quick video here:

    http://<br /> http://members.iinet.n...20Problems.wmv

    At first I thought it was a rock or something in it... no luck. Ive checked the burrs and there is nothing obvious. Ive changed the power point to ensure its not a dud power socket. Ive ensured the grinder is flat/stable on the desk. The noise happens regardless of whether there are beans in it or not. Ive given the grinder a little shake to see if there is anything loose in it, ive given it a thorough clean - no luck with any of the above.

    Its hard to see in the video but the vibration is quite intense, like there is something in it or the motor is turning on/off quickly. It even makes it jump/move on the table.

    Any ideas?
    Cheers,
    Gotrec


    Interesting... Almost sounds like a gear box or *something... *Sounds exackly like a stone that I had in mine...

    However the manual gives nothing away...

    1: There is a cct breaker involved and the older type can make quite a racket... and as it would be cutting in and out would cause all sorts of torque and thus possible movement ???

    2: The Start Cap could be on teh way out... *Causing problems.. Not likely...

    3: Its an induction system... No brushes etc *So unless there is some strange things happening with the windings etc..... Un likley..

    Thus my first guess... Not being able to work on it myself.... Item 1, would be my first check... In addition if it runs ok sometimes and during a run makes the odd noise Vs only on start, then that is also tends to suggest the cap is ok. The cct should be cheep and easy and to replace...

    If you got it new... *I would be returning for a warranty check..

    Once again... This is an electrical component that may not be meant for user replacement...

  3. #3
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    Re: Help Rancilio Rocky - Making weird noises

    I would look into warranty repair. Sounds like a bad connection or a bad start cap because it sounds like it is trying to start up over and over. Could be a bad connection somewhere, but it definitely does not sound good. You could try rotating the lower burr manually (with the grinder DISCONNECTED!) to feel the bearings, but that is a last hope guess.

    Nice video and good sound, BTW.

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    Re: Help Rancilio Rocky - Making weird noises

    Cheers guys,

    I took it back to the place of purchase already but, for some unknown reason, it decided to behave itself and I couldnt reproduce the symptoms - hence the video this time. It makes sense re the start cap or wiring as it does appear to continuously try to start.

    Ive now sent the vendors the video so I will wait and see, but at least I now have an idea of where to look.

    Again,
    Thanks for the help, I will post the outcome.

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    Re: Help Rancilio Rocky - Making weird noises

    Looking at your video it appears to me that you were turning the hopper to adjust the grind whilst the machine was running. If that is the case, that is definite NO NO for this machine. If you have been doing that since new then probably there is something broke with the grinder plates seating.

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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 150E0B0E50610 link=1234006135/4#4 date=1234053265
    Looking at your video it appears to me that you were turning the hopper to adjust the grind whilst the machine was running. If that is the case, that is definite NO NO for this machine. If you have been doing that since new then probably there is something broke with the grinder plates seating.
    WHAT!??? :-?

    Quite the opposite is true. For any grinder, the grind adjustment should only be done while the grinder is running. Some grinders specifically state that adjusting the grinder when not running will void the warranty.

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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 043738322F091178560 link=1234006135/5#5 date=1234058779
    WHAT!??? Huh

    Quite the opposite is true. For any grinder, the grind adjustment should only be done while the grinder is running. Some grinders specifically state that adjusting the grinder when not running will void the warranty.
    Yep, I was going to say the same..... that is until I downloaded the Rocky manual and had a read.....

    And UNBELIEVABLY they say NOT to adjust it whilst running :o :o :o :o

    Makes no sense to me.... and must be the ONLY grinder where they say that..... but that is what they say.

    I cant believe that less damage is done if adjusted when off.... all those bean fragments getting compressed between the burrs cant be good!

    Just like drilling a hole with an electric drill - with the power off!!! ::) ::)

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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 586B646E73554D240A0 link=1234006135/5#5 date=1234058779
    WHAT!??? [ch65533] :-?

    Quite the opposite is true. For any grinder, the grind adjustment should only be done while the grinder is running. Some grinders specifically state that adjusting the grinder when not running will void the warranty.

    Nonsense.

    Unless you know more than the Rocky manufacturer. I assume you do not have one of these grinders otherwise you would see on page 31 of the Manual:

    "Never press grinding adjustment stop button (4) when the machine is operating."

  9. #9
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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 475C595C02330 link=1234006135/7#7 date=1234063095
    Quote Originally Posted by 586B646E73554D240A0 link=1234006135/5#5 date=1234058779
    WHAT!??? [ch65533] :-?

    Quite the opposite is true. For any grinder, the grind adjustment should only be done while the grinder is running. Some grinders specifically state that adjusting the grinder when not running will void the warranty.

    Nonsense.

    Unless you know more than the Rocky manufacturer. I assume you do not have one of these grinders otherwise you would see on page 31 of the Manual:

    "Never press grinding adjustment stop button (4) when the machine is operating."
    A reminder that we play nice here. An opinion is welcome, however personal criticism is not. &gt;:(

    Might be worth noting that Rancilio also dont recommend that their Silvia be backflushed. Fortunately, most here know better.

    I concur with Randy on this one- regardless of what the manual says. It saves jamming the grinder and is precisely the reason why the Rocky has a self-tapper installed to prevent burr damage.

    2mcm

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    Re: Help Rancilio Rocky - Making weird noises

    Hey tojo1,

    Ive read the manual, and about a zillion forum/user groups. The manual is the only documentation I have found that states to change the grind settings while the machine is off. Everything else warns to only change the grind setting while it is running. Some sites will even go as far as to void your warranty if you do change the settings while the machine is off.
    http://<br /> http://www.1st-line.co...ilio/rocky.htm

    Please note as with all coffee grinders, it is very important to only change grind settings on Rocky coffee grinders when the unit is powered on and the burrs are in motion. If you do not do this, the burrs will gunk up and require cleaning by you every time this occurs. Changing the grind settings when the burrs are not in motion will render the grinder to only produce very coarse grinds or no grinds at all. If this result occurs, this will be considered operator error for lack of following directions, and will not be classified as a defective grinder - meaning this is not covered under warranty.

    It seems a little weird that the manual says to not do it, but its not entirely surprising as the manual (like the Silvia manual) is largely useless to actually using the machine. Even the videos on the Rancilio website are hopeless.

    Anyway, im sure its not this that has caused the noise/vibration, but cheers for the feedback, its bought up another good point.


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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 716A6F6A34050 link=1234006135/7#7 date=1234063095

    Unless you know more than the Rocky manufacturer. I assume you do not have one of these grinders otherwise you would see on page 31 of the Manual:

    "Never press grinding adjustment stop button (4) when the machine is operating."
    I probably do not know more than Rancilio, yet I have more faith in the average consumer than Rancilio demonstrates. Lets remember that this is the same company that tells consumers that they should not backflush the Silvia espresso machine, which is also nonsense, and I have told them so to their face. (well, to the US representative anyway). *And if you dont believe that, I have the proof on my website wh9ich shows why backflushing is necessary, and that article has been gone over and approved by one of Australias most respected espresso machine repairmen.

    In regards to the Rocky, what they are trying to avoid is the dimwitted user who, while grinding beans, *will just press the adjustment button while the machine is running. What happens is that the hopper will spin towards the coarse adjustment until the hopper stop screw hits which could possibly crack the hopper. *it would seem that this is a good reason to remove that screw which would not only eliminate damage to the grinder in the case that the button was accidentally depressed, but also allows removal of the hopper and upper burr carrier, as a unit, without tools. *

    A modicum of common sense would state that you may safely depress the adjustment IF you hold the hopper and slowly adjust it.

    On the other side of this, if the grinder is adjusted while there are beans in the hopper or the burrs have beans between them, and you adjust towards a finer grind setting, it stresses the threads of the adjustment mechanism, stresses the plastic of the hopper, and can throw the lower burr carrier out of alignment. That could easily be a bad thing considering the relatively low tolerances that Rancilio uses in their adjustment system.

    And just to set the record straight, I had one that was in daily use in my home for 6 years, so yes, I know what I am talking about.

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    Re: Help Rancilio Rocky - Making weird noises

    Randy and 2mcm
    I am also a new user of a rocky and according to the manual have only adjusted the grind setting when the machine is off. This according to those in the know now appears to be incorrect.
    Just a quick question. The rocky has a toggle switch at the front of the grinder that when released turns off. Therefore 1 hand is needed to keep this switch on and the grinder running. Another hand is needed to press the black hopper adjuster button and yet another hand would b needed to turn the hopper and make the adjustment. 3 hands??
    I understand I can jam the adjuster button on. Is this what is needed. A little unsure here???
    PS it is great to b able to learn from others on sometimes small , but significant issues.
    Thanks Cicarda

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    Re: Help Rancilio Rocky - Making weird noises

    Hey Cicarda,

    Try the teflon tape (plumbers tape) modification to reduce the slack in the grinder, this will make the adjustment with the hopper a little stiffer and allows for easier one-handed adjustment of the grind setting (check my video above).


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    Re: Help Rancilio Rocky - Making weird noises

    RandyG

    I am not going to pursue that matter.

    However I have just perused your web site - what a truly encyclopaedic work, most impressive. Particularly as you have followed the path I am considering - from Rancilio to Vibiemme Domobar Super lever and your review is most timely.

    Cheers

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    A_M
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    Re: Help Rancilio Rocky - Making weird noises

    I still go with the cct breaker over the start cap..

    If the start cap is bad it WILL NOT START... But I understand that it does and then has the start / stop action and movement / shake... This will be due to the torque and with the unit cutting in and out can also cause the system to fault even more as the cct breaker is subjected to even more vibrations and current draw.


    If you were just down the Rd we could check it out..

    AM

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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 73686D6836070 link=1234006135/13#13 date=1234073370
    RandyG

    I am not going to pursue that matter.

    However I have just perused your web site - what a truly encyclopaedic work, most impressive. Particularly as you have followed the path I am considering - from Rancilio to Vibiemme Domobar Super lever and your review is most timely.

    Cheers
    Thank you for the kind words in regards to my website. As you must have noticed, there are no banners nor sponsors, so it makes me no money directly, so it is comments such as yours that keep me motivated. Fortunately, the website has led me to other opportunities where I make enough to keep me in coffee and harmonicas.

    I was not aware that Rancilio switched to a momentary switch on the Rocky. I would assume that this feature is just on the doserless model (which I would not own).

    If you have any questions on the Vibiemme DS please ask, either here in a new thread, or feel free to contact me by E-Mail as I would be glad to answer any question I can.

  17. #17
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    Re: Help Rancilio Rocky - Making weird noises

    Tojo - having operated a Rocky for some years now I can safely say that the best way to adjust it, and to place less stress on the motor is to adjust when the machine is running - and to get rid of that ridiculous adjustment screw. It might be wise to listen to those with a considerable amount of experience of this machine - ie those who have posted above. I jammed my Rocky early on by following their directions...never again.... In fact there were some other very odd things in their directions from memory.

    To give you another example I have a 95 model FAEMA Due 2 group volumetric - serious commercial machine which makes amazing coffee. I could quote several utterly bizzare things in their manual which show that despite their machine making ability they seem to not understand some aspects of good coffee making.

    Cheers

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    Re: Help Rancilio Rocky - Making weird noises

    Quote Originally Posted by 56434A5A564D4D390 link=1234006135/16#16 date=1234128976
    I jammed my Rocky early on by following their directions...never again.... *In fact there were some other very odd things in their directions from memory.

    To give you another example I have a 95 model FAEMA Due 2 group volumetric - serious commercial machine which makes amazing coffee. *I could quote several utterly bizzare things in their manual which show that despite their machine making ability they seem to not understand some aspects of good coffee making.

    Cheers
    Sounds like something is getting lost in the translation Oz.... ;D

    I also owned a Rocky for several years too and like a lot of the (previous) owners above, I also removed the "Stop Screw" and never changed the grind without the motor running. Probably not a big issue if you want to go coarser but certainly can cause all sorts of problems when you need to go finer.

    Also, you cant really cause any damage to the burr-plates if they touch lightly since the individual plates have a narrow flat section ground and polished around the periphery and it is these surfaces that touch, not the cutting edges themselves. This holds true for most quality grinders.... You can see what I mean in the photo below -



    Mal.

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    Re: Help Rancilio Rocky - Making weird noises

    :) - probably right Mal...its not as bad as Chinglish though! Cheers

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    OK, so my Rocky has just started making the same noises and vibrations. I cleaned the burrs etc, but really feels like the motor armature or similar is hitting something. So I was thinking a bearing maybe before I found this thread. But there doesn't seem to be a result here. Does anyone know the outcome for Gotrec and what the cause was? And yes I realise it was 5 years ago. But it seems a few people have had this issue.
    Last edited by peter296; 13th December 2014 at 03:28 PM.

  21. #21
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    Welcome Peter...

    How old is your Rocky mate, out of interest?

    Of course, bearings can and do fail unexpectedly from time to time, so it might still be a bearing issue. Have you disassembled Rocky so that you can gain access to the rotating burr ass'y? Would be worth doing so that you can inspect whether there is any side-play or excessive end-play. You could also run the motor briefly at this time, so that you can see whether there is any run-out apparent, either axially or laterally.

    It could also be as simple as, just a bit of debris that's caught up in a burr-plate somehow. Won't know until you you pull it apart...

    Mal.

  22. #22
    TOK
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    Yes, and to put it another way, if it were mine I would simply remove the top plate mount (adjuster ring) complete (ie no need to remove the plates off their mountings), and check for excess movement in the bottom plate mount/shaft and if it spins well by hand (plug out of wall of course). If that is ok, without doing any damage to my fingers (ie keep them well away from the action), I would start it up and see what happens.

    It should be quiet and smooth and fuss free. If it isnt (an any of the above counts), it would be incredibly unusual (they are bomb proof), and I am afraid it would be for a service.

    Edit: has a plate mounting screw come loose?

    Note, we wouldnt know what is meant by quote " ...my Rocky has just started making the same noises and vibrations..." because the link in the OP's first post does not work (for me).

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    My Rocky is just over 4 years old but I bought it from one of the Melb dealers as a warranty repair with a new motor and "as new".
    It gets used once a day on weekdays and more on weekends and holidays.
    Yes it is a shame the OPs video has gone. Basically a few days ago it started to randomly vibrate and jump a bit like a rock or something was in the hopper. Changing the grind had no effect and today I pulled the top burr out & cleaned it all. I did spin it by hand and all felt OK, didn't notice any wobble. Put it all back together, ground some new beans and it did a couple of jumps. That's when I started searching, found this thread that sounded identical. Also found some other posts elsewhere with similar issues. But no one seemed to have come back to say how they fixed it. Although I did find someone in America who replaced the actual bearing in bottom of motor.

    The screws on the burrs were all very tight as I tried to undo them but decided they were too tight.

    Anyway, tonight ground some more beans and no problem at all. Will see how it goes tomorrow. Funny you mentioned the screws holding the motor, as one of them seemed to be stripped when I pulled it apart a couple of months ago to tighten the nut on the portafilter holder as it had vibrated loose. I will check it and use some thread locker to hold it secure.

    I'll also try turning it on without the top plate.

  24. #24
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    G'day again Peter...

    Perhaps that errant motor mounting screw has come slightly adrift again. Might be worth checking anyway. Agree with TOK, the Rocky is probably even tougher than the proverbial brick out-house and also very simple in construction (as most decent quality grinders tend to be). There's not a lot to go wrong with them and providing you observe safe work procedures when troubleshooting them, you should be able to isolate what is causing the problem.

    Vibration and noise coming from a rotating assembly usually indicates that something has become out of balance for one or more reasons and there aren't too many causes of that, mostly all identified above. I think if you slowly but surely work your way through these, starting with the easiest things to do first, you will ultimately identify what the cause is. By the way, when attempting to loosen screws on a burr carrier, you usually have to loosen in the opposite direction of rotation. In the case of the Rocky, I think it rotates in a CCW direction so that means you will need turn the burr-plate screws in a CW direction to loosen them.

    All the best,
    Mal.
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    problem gone away?

    Just to update people, since I posted here the problem has not recurred. However, I did notice once when my finger slipped off the power switch it had the same effect.
    So now I am wondering if that was the actual issue to begin with - the power switch or possibly operator error of the switch. I am using the doserless version with the switch you have to hold on to grind. Maybe my finger slipped a bit to one side and the power was pulsing causing the motor to stop/start. However after a few years of use, it is strange that I would only start not pressing it hard enough etc. But in any case, if the fault is no longer there, it is pretty hard to diagnose it further.
    If it comes back, I'll update further.
    Thanks for the advice. Great forum.
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  26. #26
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    I've had a Rocky for about 4-5 years and have had the same problem. Mine is the doser version (which has a simple on/off rocker switch) so I'd be surprised if this is a switch problem as speculated above. Mine doesn't do it all the time but it does it fairly consistently, although it doesn't seem to affect the grinding at all.

    Anyway, I've just upgraded to a Mazzer Mini and was considering selling the Rocky. I gave it a good clean out yesterday and after doing so, with no beans or left-over grounds in it, the vibration was still evident and adjusting the grind coarseness had no effect.

    So my Rocky has gone into a box and I am considering just giving it away. I don't think I can sell it with this obvious flaw.

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    Hi all, have sought lots of useful info on coffeesnobs over the years, so thanks to the community.

    Have a Rocky problem. It's about 7years old, 2-3 coffee/day. Past few months ha intermittently been jumping as though something getting stuck in the burrs, but never anything in there and the grinder just keeps functioning as needed. Yesterday it started surging with power and not having enough juice to even grind, motor going but can't grind. Taken apart, cleared, vacuumed out and even without the top plate/burr in, still does this surge albeit to a lesser extent. Bottom plate spins freely by hand, really seems a motor issue.

    Can an sort of sense it from this video, but it's not bad because there's no resistance. Any help guidance, or breaking of bad news welcome.

    Thanks

    https://youtu.be/ySKJHcUiBFw

  28. #28
    Mal Dimal's Avatar
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    Sounds like the Start/Run capacitor is cactus...

    Is easy (and cheap) enough to acquire a suitable replacement but I would recommend leaving it up to a licensed sparky to do this for you.

    Mal.

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    Now in a phase of it functioning again. Will keep this in mind and maybe take it to a repair person. Anyone got any recommendations for good repairer in Melbourne, north side?

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