Question about Rancilio (RAROCKYND) Grinder

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Rocky Calibration My Rocky Doseless isn't grinding fine enough for espresso. I've tried everything. I've even tried the teflon tape modification around the upper burr carrier. Still, nothing. I can only get a 15 second pull on the finest setting. I'm about ready to throw Rocky out the window! I've contemplated buying a new set of burrs, but I'm not sure if that would be the answer to my problem. Just so you know, I am using Starbuck's Sumatra blend right now. I ordered a fresh batch of espresso Forte' from Peet's coffee, which should be here by the end of the week. Also note that I am breaking up the clumps of espresso when distributing the coffee in the portafilter. I also apply a 30 pound tamp and a twist to finish it off. Any help is greatly appreciated!

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  • Anonymous Jan 31, 2009

    Exactly the same problem!

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  • 137 Answers

  1. replacement of burrs after 500 kg grinded coffe
  2. if upper burr holder and the body of grinder does not hold stabile, teflon aplying does not help too much, it is only temporary solution. new upper bur holder would do better.
  3. before inserting upper burr holder you should check if lower burr is rotating syncronized, you should take a bit chalk and sof touch while burr rotates. after that you stop grinder and look do you have circle with same thiknes, that would give you idea where is the problem, if it is in lower burr.

Posted on Mar 29, 2009

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Rancilio Rocky w/ doser: clean sweep of coffee grounds


The Rancilio Rocky coffee grinder is a superb, highly recommended machine, but its doser is pretty useless in the home. First reason: you want to grind coffee instants before you brew or pull your espresso shot; otherwise, the grinds just lose aromatics and flavor. The doser only works for multiple doses, so you're better off just grinding the amount you need each time. If you're buying a Rocky, get the doserless model.

If you have the doser model, like I do, you also find that the vanes which sweep the coffee into your portafilter or cone leave a layer of grounds on the doser floor. If not cleaned out, they turn rancid. There are coffee web sites with fairly complicated instructions on how to modify the vanes to do a clean sweep. Here's the simple way:

Flip up the doser cover, and spin the vanes while pressing your finger lightly on the outer top edge of one vane. The vanes have enough play so the pressure brings one into light contact with the doser floor, sweeping 99% of the grounds into your waiting portafilter.

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