HomeRoast Digest


Topic: Burr Replacement (9 msgs / 183 lines)
1) From: Barry Luterman
It never fails to amaze me how dulling of the grinder burrs is so
insidious. I just replaced my Mazzer mini burrs. I replaced them only
because I noticed that it seemed to be taking it longer to grind also
the grind I use for my espresso was working for my Vac Pot. I neatly
packed up the old burrs half convinced that they probably had 25 to
50. percent life left in them . They are less than 3 years old.They
have probably only about 150 lbs of coffee through them. At any rate I
just pulled a shot with coffee ground with  the new burrs. I can't
believe how much the shot improved. I guess i can go throw out the old
burrs. Lesson learned if in doubt change the burrs anyway.
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2) From: Mark J Bergh
Funny you should mention that, Barry.  I have been pulling my hair out
trying to dial in sweet shots from my Andreja; I have re-run the
pre-flushing cycles using the Scace Thermofilter and dialed the pressure
down to 9.5 bar; using a 'neked' portafilter, have worked toward a perfect
pull in time and volume...still bitter and full of sediment.  I use Monkey
Blend roasted to FC+/Vienna in a HotTop.  Even my milk based drinks are
stinky.  I am now thinking the burrs on my Rocky are just about shot and the
lack of uniformity in the grind might be the problema.
Thanks for the 'light bulb'; I'm placing an order for new burrs NOW!

3) From: miKe mcKoffee
Said it many times before will say it again. For Rocky grinding primarily
for 'spro highly suggest replacing burrs every 75# max' to maintain quality
grind. Whether that is your shot problem or not can't say with 100% surety
though. 
Pacific Northwest Gathering VIhttp://www.mcKonaKoffee.comURL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must">http://home.comcast.net/~mckona/PNWGVI.htmKona Konnaisseur miKe mcKoffeehttp://www.mcKonaKoffee.comURL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
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4) From: Barry Luterman
Get a new set of screws for the Rocky as well.
On Tue, Jun 3, 2008 at 2:22 PM, Mark J Bergh  wrote:
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5) From: miKe mcKoffee
Not a bad piece of advice. However for the record I've changed the burrs on
my Rocky 5 times without replacing burr carrier screws once. The key is to
use ample, boo-koo, serious, whole bunches and gobs of downward pressure
while breaking the screws loose to avoid stripping the head. Also imperative
to use a properly fitting screwdriver that itself is not stripped.
Pacific Northwest Gathering VIhttp://www.mcKonaKoffee.comURL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must">http://home.comcast.net/~mckona/PNWGVI.htmKona Konnaisseur miKe mcKoffeehttp://www.mcKonaKoffee.comURL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
Sweet Maria's List - Searchable Archiveshttp://themeyers.org/HomeRoast/
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6) From: Barry Luterman
Some Lock-Eze goes a long way too. The Rocky carrier is Brass so extra
care with any pressure is in order.
On Tue, Jun 3, 2008 at 4:20 PM, miKe mcKoffee  wrote:
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7) From: Brian Kamnetz
On Tue, Jun 3, 2008 at 10:20 PM, miKe mcKoffee  wrote:
<Snip>
I found that out while replacing the radio in my car. There was a
screw that wasn't hard to get at, straight shot up to it under the
dash, but I couldn't get it loose. I thought I was going to have to
drill it. But bought a smaller (correct fit), new  tip for my
screwdriver and it walked right out. Amazing. I don't doubt a bit that
a new screwdriver tip of the right size (apparently it is fairly
common to have trouble due to using too large a screwdriver tip) is
key to changing burrs in grinders as well.
Brian
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8) From: raymanowen
Don't just get screws, Get fillister head screws- grade 8 if you can find
them, and a brand new driver that fits exactly. Socket head screws would be
good, too, and get a new exclusive use hex wrench for them.
Cheers, Mabuhay -RayO, aka Opa!
On Tue, Jun 3, 2008 at 8:11 PM, Barry Luterman  wrote:
<Snip>
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976
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9) From: Paul Helbert
In the early seventies I was having trouble removing the cross headed
screws on some Japanese motorcycles. A hand impact driver fitted with
the correct bit did the trick without damage every time. (The hand
impact driver is hit with a hammer so that it twists and pushes
simultaneously). I now own two of them and can't find either one.
That and Kroil.
YMMV,
-- 
Paul Helbert
Prepackaged, roasted & ground coffee,,,
Some of the worst ideas since sliced bread.
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