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Topic: Kona profile for Behmor 1600 (8 msgs / 195 lines)
1) From: ddubr75
Would anyone wish to share some profiles that they have used with the Kona coffees offered by Tom/ SM? I will be receiving the three that he currently offers next Friday. The? roasting batch size?will be?1/4#. I have roasted 10 batches since receiving the Behmor, I love it, though it does appear to roast a little on the light side. I prefer lighter roasted coffees, though not so light as to taste grassy. I have also overroasted too (just once)... Please share your wealth of experience with the Behmor, I am newbie to that roaster.
Any tips on the cleansing and reuse of the plastic vacuum bags purchased from SM?
Dave Smith
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2) From: Paul Helbert
April 15, ambient temp. = 51F, 227 grams of Kona Kawali Fancy, set 1#,
P5, 115.6 VAC under load. Heat cycling at 4 min, 12 min goes to full
power, 15 min smells like coffee, 16 min 1st crack, 16.5 min rolling
1st crack, 18 min EOR. Target = FC+. Result = City/City+. Never
developed much roasted coffee odor. This is the only time I used P5
and I was not happy with the result. I had previously roasted several
pounds of the same bean in poppers or using stovetop methods with very
good results. I will try again in a few weeks with P1 followed by P2.
Maybe by then you will be sharing your results and I'll learn from
your experience.
Recycling of the vacuum bags,,,just cut the valve out with scissors
about an eight of an inch away from the white plastic. Four cuts  will
do it, like a square postage stamp with the valve in the center. Then,
with a hole say, cut a hole in the center of your Mason jar lid, baby
food jar lid or whatever fits your jar. Tape the valve with its
accompanying flap of bag to the top of the lid. Now you have a
reusable degassing storage jar.
-- 
Paul Helbert
Prepackaged, roasted & ground coffee,,,
Some of the worst ideas since sliced bread.
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3) From: Jamie Dolan
<Snip>
HI;
I will see Joe From Behmor in the morning tommrow (Sunday).  If you
have questions that you want answered, let me know and I will ask him
tommrow.
-Jamie
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4) From: raymanowen
Do tell, what is the exact advantage of "a reusable degassing storage jar,"
compared to the Mason jars and seals I'm now using and have for two years?
-ro
On Sat, May 3, 2008 at 7:46 PM, Paul Helbert  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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5) From: Paul Helbert
On Sun, May 4, 2008 at 12:50 AM,   wrote:
<Snip>
I don't know , Ray. How does your Mason jar allow for degassing during resting?
I have all the advantages of the mason jar (primarily easy cleaning)
plus the valve.
-- 
Paul Helbert
Prepackaged, roasted & ground coffee,,,
Some of the worst ideas since sliced bread.
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6) From: Floyd Lozano
I used the profile suggested in the manual but my voltage might be a
couple volts low (last time i measured it was 114 unloaded) and i
didn't hit first til about 47 sec remaining in the roast.  This was on
last year's Kona JBM, so I wrecked about a half lb of that.  I'd
suggest if your voltage runs a little low, try it with maybe 7oz of
coffee instead of 8 and you'll probably get a FC roast instead of what
appears to be City for me.
On Sat, May 3, 2008 at 9:46 PM, Paul Helbert  wrote:
<Snip>
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7) From: Paul Helbert
Here's log of a trial roast of the Kona Kawali. 116 grams, 1 #
setting, P1, 113.9 loaded VAC.
8:30 1st crack isolate.
9:00 Rolling 1st crack.
9:45 End of 1st crack.
11:15 Begin 2nd crack.
11:20 Hit COOL.
11:40 2nd crack still rolling.
11:50 2nd crack tapering off.
11:55 No more 2nd crack.
16:00 Opened door.
19:00 Dumped.
Target: FC+
Result: FC+
Final mass 96 grams.
Observations: Very even roast. Beautiful large, smoooth, shiny but not
oily dark brown (Matches Tom's # 14) with very few divots. Crunch
taste like burnt toast.
What I did next based on this run:
Calculated P2 to match 1st crack with power reduction. Nine minutes is
60% of fifteen minutes. So (again with 116 grams) set 1#, P2, reduce
time to 15 min, START. Watch roast. Add time if necessary to elongate
final (full power) leg and terminate roast at desired roast level.
(Shoot for C+ on this second run and expect no 2nd crack or to hit
COOL at very first snaps of 2nd).
Here is log of that trial: Kona Kawali. 116 grams, 1 # setting, 15
minutes, P2, 114.2 loaded VAC.
8:55 1st crack isolate.
9:20 Sputtering 1st crack.
10:00 End of 1st crack.
13:10 Hit COOL on color and imagined 2nd crack isolate.
13:15 Heard maybe one or two snaps of 2nd crack during first few
seconds of cooling..
16:00 Opened door.
19:00 Dumped.
Target: C+
Result: FC
Final mass 96 grams.
Observations: Very even roast. Beautiful large, smooth, non-glossy
finish, not oily, medium dark brown (Matches Tom's #13) with only one
divot found. Crunch taste is without burnt note.
Where to go from here? I seldom roast more than half a pound at a
time. If I increase load or decrease initial time setting 1st crack
would sputter along over several more minutes. In order to get the
final full power leg to do its thing and then automatically cool I'd
probably have to mess around with one of the other profiles. To date I
have not used P3 or P4. What is the sense of the A, B, C, D buttons?
They don't seem to do anything I can't do by adjusting time before
starting, unless I'm missing something. I wish there were a way to
have the readout count time ascending rather than time remaining.
--
Paul Helbert
Prepackaged, roasted & ground coffee,,,
Some of the worst ideas since sliced bread.
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8) From: raymanowen
"How does your Mason jar allow for degassing during resting?
I believe the Mason jars, even tightly sealed, neither promote nor prohibit
outgassing in the  chemical reaction initiated by roasting.
If you just toss the roasted beans in the street, they'll outgas, even
though they're subjected to atmospheric pressure of up to 14.7 psi. The
protective CO2 will drift away. Within the jar, the gases are undisturbed
and will stratify*, keeping the beans submerged in CO2, below the O2 layer.
*Stratify- just like oil and water, and for the same reason.
Cheers, Mabuhay -RayO, aka Opa!
Pressure is all relative-
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