HomeRoast Digest


Topic: Hot Damn, Hot Time in the City (6 msgs / 133 lines)
1) From: miKe mcKoffee
City to Full City that is. Saturday did some more profile testing with the
USRC. The 14:30 4# auto-roast batch ran flawlessly, I mean within 5f every
30sec check point I manually logged. Tanning end at 5:30 1 f off programmed
temp, 1st crack within 5 seconds of target (10:05), EOR 14:34 instead of
14:30 programmed. Oh gee, auto-roast auto-dump missed by 4 seconds:-) Was
somewhat "ecstatic" over that roast run. Getting a good feel for the
roaster's thermal dynamics and PLC programming. (Ok, more like jumping for
joy and singing a chorus of hallelulahs:-) So decided to go for the gusto
and do a first 8 pound max capacity roast. Mid-roast an intermittent problem
reared it's ugly head, a problem which changing gas regulator had thought to
have fixed. FLAME-OUT! Aborted the auto-profile, re-ignited and continued
manual mode. A couple minutes later and wham bam no thank-you mam, no burner
again. Damn, 8 pounds of Columbia down the drain. Was getting late Saturday
evening so went home with definite mixed emotions.
Called Dan at USRC this morning and discussed the problem. He suspected the
pilot wind shield needed to be bigger or adjusted and or really thinks going
to a high flame pilot would do the trick. So while he's shipping the new
pilot I fashioned a shield from a Shitake Straw mushroom can. (Used in
today's Masaman Beef soup:-) A related issue was taking a long time for
initial ignition, which it never did when running NG in Oklahoma but has
been a problem LPG here. After adding the Shitake heat shield over a dozen
test roast starts almost instant ignition every time. Difference in NG LPG
flow characteristics.
So to really test ran an 8 pound batch Columbia, 16:14 FC no problem. Now
this is with a 3kg=7.2lb rated roaster mind you. Unlike the under powered
Diedrich IR series this USRC sucker can walk the talk with power to spare.
Actually had a minor "problem" or really just part of learning curve. A bit
low on the turning temp so next 8 pounder will raise the charge temp from
420f to 440f for a bit faster tanning stage.
We be smokin'!
Kona Konnaisseur miKe mcKoffeehttp://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must">http://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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2) From: Brian Kamnetz
Thanks for keeping us posted, miKe. I'm following your posts with
great interest.
Sure hope I can make it out there some day....
Brian
On Feb 18, 2008 4:28 PM, miKe mcKoffee  wrote:
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3) From: Edward Bourgeois
MiKe  sounds like your first dates have been going well. Even if
you've been momentarily dissapointted it seems you two have been able
to work things out. And you are starting to admire some strengths
compared to others. Looks like a lasting relationship. Damn am I
jealous,
On Feb 18, 2008 4:54 PM, Brian Kamnetz  wrote:
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4) From: Larry Johnson
Excellent post, MiKe. I'm really enjoying reading about your progress.
Really gotta come visit someday soon.
On Feb 18, 2008 4:28 PM, miKe mcKoffee  wrote:
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5) From: Larry Johnson
Excellent post, MiKe. I'm really enjoying reading about your progress.
Really gotta come visit someday soon.
On Feb 18, 2008 4:28 PM, miKe mcKoffee  wrote:
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6) From: miKe mcKoffee
Dang, was going to do another 8 pounder this evening to test the tweaks I
made to the profile and higher charge temp but don't you know, only had 7.2#
of the Columbia I'd brought in left! Rats, will have to wait until tomorrow.
Also going to be doing my first decaf roast in the USRC tomorrow because
both roasted bags on the shelf walked out the door today. How rude! I mean,
what are we supposed to use in the decaf espresso grinder if people buy the
stuff! (Had two bags that went in the freezer at 10 days post roast targeted
for the decaf grinder so really not a problem, one brought out for
tomorrow:-) 
Now time to finish cleaning up and head for home...
Kona Konnaisseur miKe mcKoffeehttp://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must">http://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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