HomeRoast Digest


Topic: First time post (14 msgs / 326 lines)
1) From: Scott Bovelsky
I have a question for the readers. This is my first posting, however, I read the submissions all the time. I have been roasting coffee with a fresh roast for 2-3 years. I am thinking of upgrading to the behmor but am not sure if I should. What are your opinions on going from a fresh roast to the behmor. Thanks. 
Scott
M. Scott Bovelsky, M.D. F.A.C.O.G.
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2) From: michael brown
Welcome lurker!That's exactly what I did. Upgrade from the fresh roast to the behmor. That was years ago.  Why are you thinking about upgrading?My primary reason for the upgrade was to roast more and more control over the roast.  To be honest, I don't think I ever really got a good hand on the settings on the fresh roast.The behmor for me was a lot easier to catch on with.  I think you'll be happy.
Michael BB'ham, AL
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3) From: silas coelho
Scott
I took that path few years ago, and I dont regret at all. The main reason
for me was that I was looking for a way to roast more then just a few ounces
on each batch, and ability to control the roasting process with an improved
precision, and this is exactly what Behmor offers. Another driver for me was
the ability to properly control each bath and my 'green beans warehouse
(!!!)', and I found the Behmor Thing (little piece of sw) that does exactly
that.
Once in a while , I still go back to the I Roast for very specific, very
small batches, but for sure my I Roast time is over.
Grato/Regards
Silas
Contritionem praecedit superbia,
et ante ruinam exaltatio spiritus (Prov 16:18)http://silasmcoelho.com/2011/1/27 Scott Bovelsky 
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4) From: Allon Stern
On Jan 27, 2011, at 9:43 AM, Scott Bovelsky  wrote:
<Snip>
I took a different path from the others.
I used an iRoast2, not a FR, but the lack of control and batch size were the motivation here as well. I got a nice heat gun and went the HG route for a while. I think all homeroasters should try heat gun at least for a while. It is cheap, easy, and very intimate; you have your nose in the roast and controlling the heat is as easy as moving your hand closer or farther.
I still do heat gun roasts but for ultimate control I put a PID in my iRoast. 170g appears to be my limit that way, but I can do back to back REPEATABLE roasts with it with little effort.
HG isn't as repeatable and is strictly an outdoor toy.
-
allon
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5) From: silas coelho
Allon
where did you found a PID for IRoast?
Grato/Regards
Silas
Contritionem praecedit superbia,
et ante ruinam exaltatio spiritus (Prov 16:18)http://silasmcoelho.com/2011/1/27 Allon Stern 
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6) From: michael kaericher
Yes.
I went from a whirleypop to a Behmor.  Everything except batch size is be=
tter (and I don't really ever need to roast more than 12oz at a go anyway).
Behmor has its limitations as well, but it is still a (very solid) step up.
-Mike
--- On Thu, 1/27/11, Scott Bovelsky  wrote:
From: Scott Bovelsky 
Subject: [Homeroast] First time post
To: "homeroast" 
Date: Thursday, January 27, 2011, 8:43 AM
I have a question for the readers. This is my first posting, however, I rea=
d the submissions all the time. I have been roasting coffee with a fresh ro=
ast for 2-3 years. I am thinking of upgrading to the behmor but am not sure=
 if I should. What are your opinions on going from a fresh roast to the beh=
mor. Thanks. =
Scott
M. Scott Bovelsky, M.D. F.A.C.O.G.
Dedicated to Women
Homeroast mailing list
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Homeroast community pictures -upload yours!) :http://www.sweetmariascoffee=.com/gallery/main.php?g2_itemId=7820
      =
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7) From: Dave Huddle
I've roasted with a WestBend poppery II, Hearthware Precision,
Hearthware Gourmet, Alpenrost, the original Fresh Roast, the  'wb' (a
briefly marketed roaster from West Bend), a Zack and Dani's (now
called Nesco) and  _NOW_  the Behmor.
I still have the WBP II, Fresh Roast, 'wb', Zack & Dani's - but use
the Behmor all the time, about every 3 to 4 days (1/2 pound batches)
to supply me and my wife with fresh roast.    (The Hearthwares and the
Alpenrost don't work anymore.)
I've run the Behmor through about 350 roast cycles, if I remember correctly.
The batch size, control, visibility, smoke supression, ease of
cleaning and chaff control are major benefits of the Behmor.
ALSO  - customer support from Behmor is top notch!     (I got one of
the first Behmors from SweetMarias.   It didn't work properly right
out of the box.   I detailed the problem to the Behmor site.    Joe
Behm responded via email with a diagnosis, an image and discussion of
how to fix it.    Then he called me on Thanksgiving morning and walked
me through the fix in about 5 minutes.    After that, we chatted for
about 25 minutes about Ohio, Ohio State football, etc.)
Years later I shipped my roaster back to Behmor for a fix I didn't
feel comfortable doing myself.    All it cost was for the parts, and
shipping both ways.    Again - top notch service!
Dave
Westerville, Ohio
On Thu, Jan 27, 2011 at 9:43 AM, Scott Bovelsky  wrote:
<Snip>
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8) From: Yakster
I went from hot air poppers to a Behmor.  Tried HG/BM but didn't work (bad
heat gun?).  Started with perf pizza pan in Convection Oven but Wife
squelched that quick because of the smoke.  Roast occasionally over campfire
with old fashioned wire mesh popcorn popper.
I would not hesitate to buy a second Behmor, if necessary.  I picked up mine
refurbished (has a 2007 date on it) and I've logged 200 roasts in it since
Feb 2009.  I don' t know how many roasts the previous owner put on it, but I
could tell it had been used.  I had a problem with the drum and fixed then
replaced the heating wire in the afterburner twice, but it's built like a
tank and with BehmorThing it's easy to use.  I've dreamt of upgrading to the
Quest M3, but I think that'll have to wait for an unexpected financial
windfall sometime in the future.
-Chris
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9) From: John A C Despres
I went from Fresh Roast 8 Plus to a Gene Cafe. 100 % control, no guessing
and terribly easy to use from out of the box.
John
On Thu, Jan 27, 2011 at 2:18 PM, Yakster  wrote:
<Snip>
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10) From: Allon Stern
On Jan 27, 2011, at 11:24 AM, silas coelho wrote:
<Snip>
Well, I'd been thinking for a while about building a PID controller for roasting; had an Arduino, found some PID algorithms, had a small pile of solid state relays and the like, but never really found the time to finish up the project.
Then I found an auction for some PID controllers and scored a great deal on a few Omron E5CK-T pid controllers.
This particular PID controller allows one to set up four different programs of ramp & soak (I leave off the soaks :) of up to 8 steps each (the manual says 16 steps, but I've only figured out how to do 8)
To understand how the PID worked (without destroying my roaster) I first experimented using a light bulb - I put a thermocouple against the light bulb, and ran the light bulb through a SSR controlled by the PID. I figured out how to run it to 100 degrees, ramp to 120 degrees, then back down to 100 degrees, how to autotune the PID, and how the programs worked. I was ready.
I  took a screwdriver to my perfectly working iRoast2. (It worked as designed, but not as I liked it - I hardly used it anymore because I was tired of having to work really hard to get any sort of control out of it, having moved mostly to heat gun roasting.) I removed all the control electronics, ran the fan wires to one power cord and both heating coils to a second power cord. I built a separate box to house the PID controller, along with an outlet box and dimmer - the dimmer controls one outlet which is used to modulate the fan speed. The other outlet is controlled by the solid state relay, which is mounted to the bottom of the (metal) outlet box for heat dissipation;  A big barrier strip handles all the 120VAC wiring inside my (plastic) controller box.
I actually cheated a little bit - the controller box I salvaged from another PID unit that I'd bought at a hamfest a couple of years ago; the PID unit that was in it was NOT suitable for roasting as it didn't do programs (though it would be fine for a single or dual boiler espresso machine; alas, I have an HX). Anyway, this box happened to have a thermocouple socket on the front, so I used that.
I run the thermocouple for the PID up through the holes in the bottom of the iRoast chamber; this means it gets a little squished by against the seals by the chamber mounting to the base. This could be a problem since I'd have to realign it every time I remounted the chamber to the base, but I never remove it - I never bothered putting the bottom half of the base back together and it's really lightweight, so at end of roast, I just remove the chamber top, and dump the whole unit over to dump the beans into the tray from the scale I use to weigh the greens.
When PID roasting, all the work that goes into roasting must be done up front - you have to think before you roast. Not just how dark do I want to roast this, but how fast do I want to get through various stages?
I have found great success using a basic profile from miKe as a starting point, and have adapted it's basic framework for other roast styles; I can see that if I had 100lbs of a coffee that I needed to roast in a large roaster, I  could use this small PIDed roaster to develop a profile for it; I don't take very good notes, however, and largely run on intuition at the moment, though I have some ideas for developing profiles that I'd like to try someday.
* caveat *
I am comfortable working with 120VAC. If you are not at all experienced with electrical wiring, either take the time to learn properly, or find someone to do the 120VAC work for you. Design for safety. This stuff can kill you.
-
allon
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11) From: Jim Gundlach
On Jan 28, 2011, at 5:05 AM, Allon Stern wrote:
<Snip>
Just before I reached this part of your post I concluded that this was interesting but a bit beyond my level of knowledge.  Even though back when we moved to Alabama in the 70's we bought 68 acres and in a little over a year I built a log house on it.  The only work I hired someone else to do was the electrical wiring and when they finished I discovered that it did not work so I read up on it and fixed it.
If it works really well you might work with Behmor to provide a super control accessory.
   pecan jim
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12) From: Lynne Biziewski
Ah, Jim, you did what I always wanted to do! (although I'm very happy where
I am right now). I have books fr the '70's on my shelf about owner-built
houses (Alex Wade was an architect that wrote a few I liked, and seems to
disappear off the landscape, more or less)
Lynne
On Fri, Jan 28, 2011 at 10:35 AM, Jim Gundlach wrote:
<Snip>
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13) From: Joseph Robertson
Allon,
Very nice thread morph. Thumbs up on a Very clear description on your
process. I tend to disagree that you don't take very good notes.
Unlike Jim, as a homeowner / contractor the part I liked the most was the
wiring. Not to say I have not had my share of ahh, shocking experiences.
Again I could built the system you discribed here but over the years as a
coffee roaster I have found what you said to be a serious bottom line.
"largely run on intuition".
Your last paragraph says it all. Personally II still want to built a PID'ed
direct readout system to a real time graphing software on my laptop so I can
saved visual files to compare my roast profiles on my Behmor. This does
exist but the companies that provide it want way to much money to subscribe
to it. As far as your nice work with the IRoast2. I salute you. I'm with Jim
though, I would love to see you do this with a Behmor. Thanks again Allon
for your great "Notes" on this not so little project of yours.
Joe
On Fri, Jan 28, 2011 at 7:51 AM, Lynne Biziewski  wrote:
<Snip>
-- 
Joseph Robertson
Sasquatch Coffee Roasters
Craft Coffee Roasting by Designhttp://www.jolindas.com(360)521-3104     PO Box 451 Stevenson,Washington 98648 USA
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14) From: Allon Stern
On Jan 28, 2011, at 10:35 AM, Jim Gundlach wrote:
<Snip>
The hard part is getting a good temperature probe into the bean mass on the Behmor. It's just not set up for it.
On Jan 28, 2011, at 11:43 AM, Joseph Robertson wrote:
<Snip>
Real time graph of what?
Graphing temperature from a PID controlled system totally misses the point. A PID will force the beans to follow the curve you've defined. I think graphing the duty cycle output from the PID would be far more interesting.
Or graphing a non-PID roast, then programming a PID to repeat it.
But graphing a PID roast is as interesting as tracing a line. All the interesting stuff with a PID roast comes before you start roasting.
-
allon
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