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Topic: Behmor P2 Help (12 msgs / 273 lines)
1) From: Dennis Guyer
Has anyone been using P-2 on the Behmor with success?  I have made two attempts and feel like I would do better with using P-1 and opening the door to slow 1st C.  My last P-2 attempt was 150 grams Panama Finca using 1/2 lb. C.  I hit 1st. at 9:52 and stopped the roast at 12:07.  It seemed a little under roasted to me.  Any advice for a better roast.
Dennis
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2) From: Yakster
I went from using P2 for the power drop to just opening the door and
watching the thermocouple temperature to mimic a P2 profile but with me
controlling when to drop the temps.
When I was using P2 before, I was roasting 283 g and up and I would first
roast the bean using P1 to see where first would hit.  I'd then program the
Behmor using BehmorThing to figure out the closest profile that fit, A, B,
C, D and if the drop didn't line up right I'd do a pre-roast of up to two
minutes which would push out the temp drop to where I needed it.  I usually
had to do a pre-roast when trying to roast larger batches were first crack
would be pushed out, theoretically you could tune your first crack to occur
right when you want it based on load size, but due to variations such as
external temperatures and voltages, this didn't always work out.  That's a
big reason I stopped using P2 was to take care of the variations, but when
it worked I was happy with it.
Now, I pre-heat the Behmor without the beans for about 1:30 so that the
beans start at about 200 degrees F to try and take some of the seasonal
variation out of roasting.
-Chris
On Mon, Nov 29, 2010 at 1:06 PM, Dennis Guyer  wrote:
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3) From: Dennis Guyer
From: "Yakster" 
Subject: Re: [Homeroast] Behmor P2 Help
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Yakster.
I would like to try the probe.  Where do you tape the probe and what will 
take the heat to hold it in place.
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I'm a little confused on the beans at 200 degrees if they are not in the 
Behmor when you start the pre-heat.  Do you mean the interior starts at 200 
degrees and builds from there?
Dennis
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4) From: miKe mcKoffee
Just about any drum roast start of 1st to end of roast less than 3min is in
danger of being under roasted regardless the finish temp, especially one
with poor convection like the Behmor.
My advice? Learn to control your roaster so you can extend your finish stage
time without going darker than desired.
Slave to the Bean  miKe mcKoffee
www.CompassCoffeeRoasting.com
URL 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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5) From: ricky carter
MiKe,
Is the finish also when body is developed?  I've been finishing most of my
roasts in 3 to 31/3 minutes and getting decent flavors but body seems to be
lacking.  The 3 minute finish at first was because I didn't have a handle on
good control of temp with the Quest, but now I have pretty good control and
feel I could take it out to 4 or 5 minutes at whatever roast level I might
want to end at.
BTW, I still have 2 lbs of Jimma I'm saving for when I feel like I have the
experience on this roaster to get it right...
Thanks in advance.
On Mon, Nov 29, 2010 at 5:14 PM, miKe mcKoffee  wrote:
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6) From: Bob Hazen
P2 works well for me.  My baseline setting is P2 1lb "C" for 21:30 on the 
clock.  I roast 335 g of coffee on that setting.  The power drop typically 
occurs within 20 s either side of 1st crack.  I'll hit 2nd at around 18 min 
if I let it go to that point.  This is a good place for me to start on most 
coffees >with my roaster, and my line voltage< but I may use the "B" setting 
with some coffees.  A recent surprise, Jimma, didn't take to this approach 
AT ALL!  Thanks to others on the list, I learned that Jimma likes one to 
dynamite the brakes.  As such, I'll be supplementing my method with some 
door wagging next time.
Bob
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7) From: Mark Jones
Hi Mike, 
I also have the behmor and was curious about your comment of controlling the roaster; what would you suggest to extend the roast past 3 minutes without going too dark? I've been opening the door once 1st crack hits about every 3 to 4 sec with a 5 sec gap in between; my only issue with that is trying not to stall the roast. If you can suggest some options, I'm sure some of the folks on here, as well as myself, would greatly appreciate it. 
Thanks! 
Mark P. Jones

8) From: Dennis Guyer
Bob,
This is what I was looking for.  Some sort of a base line profile to give me 
something to shoot for.  I will try your profile on my next P-2 roast.  I 
find Mike McKoffee's 3 min. rule as something to shoot for also.  I don't 
think I have ever been able to go 3 min's after the start of 1st. C without 
over roasting the beans. I am not a dark bean drinker anyway, but that's 
just me.  I have just started to use the Behmor and have about 10 roasts 
under my belt.  This after using the IRoast2 for about 2 years so I am still 
trying to understand the different idiosyncrasies of this roaster.
Dennis
From: "Bob Hazen" 
Sent: Monday, November 29, 2010 8:47 PM
Subject: Re: [Homeroast] Behmor P2 Help
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9) From: Robert Yoder
Hi Bob,
 
I'm not sure what you mean by "dynamite the brakes".  Can you clarify?
 
Thanks, and
 
Happy Roasting,
 
robert yoder
 
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10) From: Bob Hazen
Mmm...  Re-reading, I see what you mean.  Perhaps "slam" on the brakes would 
have been better.  There was quite a discussion in weeks past about Jimma. 
I had some troubles with 1st roaring right into 2nd.  The list wisdom 
indicated that it was good to get the beans up to temp and then really pull 
back on the heat to keep from zooming through to 2nd.  In other words, hit 
the brakes.
Bob

11) From: Bob Hazen
Dennis,
Let us know how it works for you.
Bob

12) From: Robert Yoder
Thanks! 
 
I added a thermocouple to my Behmor and am trying to learn the door-opening 'braking' technique.  From my first Behmor roast, I have also had troubles with 1st roaring right into 2d. My goal is to keep the environment temperature climbing (albeit as slowly as possible) after First Crack and extend the inter-crack interval.  It is a bit of a challenge to hold the door and watch the ET, but I think I am beginning to succeed.  I haven't run sufficient trials to say for sure, but it seems to me that at last, there is serious complexity to the resultant cup, and I am stoked. I want to see how much I can learn with this beast before starting the savings program for a Quest M3!
 
Happy Roasting,
 
robert yoder
 
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