Re: Rocky seems to jam up!

From what you've described, the burrs are adjusted so close together
as to not allow the beans to get between them. I've seen this happen
with commercial grinders as well. I've also seen motor shafts
disengage from a burrset when too great a stress is put upon them. Who
did the burr change?....al


On Aug 26, 3:01 pm, "John" <cranks...@att.net> wrote:
> I'm using a Rancilio Rocky grinder with a very dark roast -- Italian it's
> called at my local roaster. I brew espresso with a Gaggia Classic...doubl
es
> with 15g tamped with an Espro to 30# (or whatever its calibration) runnin
g
> for 25 seconds.
>
> All good...but to get the 25 second pour with the oily roast I have Rocky
> just a click or two from grinding burr-on-burr. I've noticed that oily, d
ark
> roasts require much finer grinds for 25-second pours. Rocky does have new
> burrs as of a couple of weeks ago.
>
> My problem is that occasionally Rocky stops grinding. Not a jam-up in the
> hopper leading to the burrs as I can keep pushing down on the beans (I've
> removed the finger guard, BTW), but in the burrs. It's like the burrs can
't
> get a bite and keep the grinds coming. To get grinds flowing again, I nee
d
> to loosen the burrs to coarse, and then when I hear the grinding 'catch'
> again, I turn in back to fine-grind and grinding continues until the next
> jam up.
>
> Any thoughts?
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John (27.08.2008 14:06)