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Topic: QM3 arrives today!! My first blush review. (8 msgs / 267 lines)
1) From: sci
The QM3 arrived today. THANK YOU Sweet Maria's and Coffee Shrub!
The Q is a dream machine, like driving an Italian sports car. Built like a
tank out of pure highly polished stainless steel, it has a charming look,
certainly a conversation piece. If it had a couple of brass bobbles and an
emblem, this thing would look classy. Still, anybody who walked into you
kitchen would immediately be intrigued by it.
I roasted three 125g batches back to back and she performed like a champ.
Cracks are easy to hear. Tomorrow I'll try 250g batches. Finally, I, yo,
moi, was in control and not a Procrustean bed profile I didn't create that
blindly executes itself (no, I'm not a control freak no matter what my ex
says). The back-to-back roasting is easy because the drum stays hot during
cooling. I'll probably do at least 2 or 3 roasts each session because the
preheat does take about 15 min.
The Q is as powerful as she is pretty. I had no problem getting the 125g
charge up to 2C with a nice 3-4 min. pause between 1C and 2C.
Here's the big advantages:
1. Plenty of heat at your full control. And this isn't on/off cycles of a
heating element, but steady heat delivered by two heating elements. Set it
at 7amps and the elements draw 7amps, not on,off,on,off. You can control
things on the fly. But this requires constant hand-holding. I don't think
I'll stray out of the room with the Q running. It requires front burner
attention mode.
2. A powerful fan to ventilate the drum chamber and draw out chaff. This
allows you to control temp. I think Tom said he sets the temp at a good
steady setting and leaves it there, and then uses the fan to control
temperature. I'm still learning.
3. A trier.Yes, a TRIER,  on a home roaster! Twist it and pull out 4-6 beans
at any point in the roast. Bite'm, sniff'm. Target your roasts where you
want them. Careful, that thing is hot! Aside from Whirley pop and HG/DB
roasting, grabbing a bean out of the roasting bean mass is rare.
4. A chamber window. A small window also allows you to see inside the drum
and look at the beans as they churn. This is like seeing the beans in the
IR2 chamber dance around. The Q's window is tiny, but it works.
5. A Bean Mass temp. probe. The thermometer screws in the front and goes
right into the rotating mass of beans. I do not like the Celsius
calibration, but I will learn to live with it.
6. A machined and threaded hole is provided for at ET (environment probe) to
track drum air temp. That temp responds quickly to fan settings. I used my
thermocouple and digital unit in that hole, but it needs a bushing to hold
it. [Anybody know where I can get one?]
7. Bean cooling is very fast, outside the drum like HT. Dump the beans in a
tray, place the tray on the back fan box, and the beans are cooled in 2 min.
flat. It will take longer for 250g charges.
8. Chaff control is nice compared to the B1600. After three roasts, the
chaff collector was still working fine, easy to dump.
9. Quiet. Very quiet. I didn't know it started when I turned the timer knob.
Drum is quiet, fans too. The loudest noise you will hear is the beans
themselves gently tossing around in the drum, and their cracks. SuuWeeeet!
Here's the disadvantages:
1. It doesn't roast a full pound like the B1600. Perhaps the Q should be
compared to the Gene Cafe or the HT here. Oh well, as long as she does back
to back 250g charges, who cares. Some have roasted 300g. Maybe I'll try that
soon. I believe it has the power. I roasted my 125g batches with 7amps or
less, and it will use up to 10amps.
2. Cost. At 4X the cost of the B1600, it's steep. But I'm pretty convinced
on first blush, that the QM3 is worth every penny, IF it proves durable.
3. No smoke suppression. B1600 is nice on this. But with smaller batches,
I'm not sure the Q will need it. It is easily small enough to put under an
oven hood.
4. Some don't like the flat exhaust vent on the back. It isn't that big a
deal, but I roast under a hood. Still, a flat vent like that is easy to
modify.
5. It does get hot! External surfaces will burn you FAST. But, so will my
cast iron griddle, and my water kettle, etc. It can't be avoided in cooking.
Just be careful and keep kids away.
6. Some think it needs a funnel to dump the beans in the bean chute. Yea, it
would look cute and be practical, but I poured in three batches and didn't
spill nary a bean. If even an issue, it is a minor one.
7. No UL approval. Significant? Yes, and no.  I'll let others tackle this.
Bottom line: I highly recommend.
Ivan
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2) From: Robert Yoder
Congratulations, Ivan!
 
I had worried that the BMT probe wouldn't really reach into the beans with a 125G load.  Does that probe respond appropriately with the little batch?.  Do you use some kind of external light source to see into the window?  How did you choose settings for your first roasts? What kind of time to 1C.  "THREE TO FOUR MINUTES" 1C-2C interval!!!.
 
"Procrustean Profile"!!! Perfect!
 
Please let us know how it goes!
 
Happy Roasting,
 
robert yoder
 
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3) From: miKe mcKoffee
I have a $2700 Pawlin modified Computer Controlled HotTop, a $13,000 USRC 3k
with PLC profile control and I'm jealous.
:)
Congratulations! Great first look report.
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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4) From: Joseph Robertson
Jealous you may be miKe. Sounds like from all the roasting folk moving to
the "Q" we should be jealous. Home roasting is finally getting to were we
wished it was when we started with poppers.
I'm stareing at my 18K 5kilo 1975 Probat and thinking about ordering one or
two of these sweet little units so customers can see how "almost" anyone can
enjoy the craft and sweet joy of fresh roasted coffee. With Tom's cream of
the crop beans and one of these unit's, damn I'm going to check my bank
acct. now.
To all of you who now own one of these babys  please keep us posted to your
trial's and tribulations as you move into the wonderful world of craft
roasting.
Cheers,
Joseph
On Tue, Jan 11, 2011 at 8:17 AM, miKe mcKoffee  wrote:
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-- 
Ambassador for Specialty Coffee and palate reform.
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5) From: Barry Luterman
I am getting one also. MiKe if you want to come over and play with it let me
know
On Tue, Jan 11, 2011 at 10:45 AM, Joseph Robertson wrote:
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6) From: Tom & Maria - Sweet Maria's Coffee
Thanks for the comments Ivan - It's really good for me/us to hear the 
Pros and Cons from a fresh perspective. Of course, the most important 
feedback is what we get over time, and as we use them ourselves. I 
also had 5 220 volt models made and am taking one to Ethiopia in a 
couple weeks for roasting in the field! Should be fun - I will take 
some pictures. Definitely watch those hot surfaces - the dump chute 
on the front got me once! -Tom
<Snip>
-- 
-Tom
"Great coffee comes from little roasters" - Sweet Maria's Home Coffee Roasting
               Thompson & Maria -http://www.sweetmarias.com     Sweet Maria's Coffee - 1115 21st Street, Oakland, CA 94607 - USA
             phone/fax: 888 876 5917 - info_at_sweetmarias.com
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7) From: sci
Thanks miKe and Robert,
It is easy to see the BT probe in contact with the beans when you take the
trier out. With a small flashlight, you can peer into the chamber and see
the beans churning and tumbling all around the probe. I think the probe will
respond better to larger charges, but even with the 125g charge, it was
covered with bean mass. Nice. The BT probe was much slower to respond than
the ET probe, just as one would expect.
For my first roasts, I used Arpi's "Unoffical Q3 manual" suggestions and
some other posted suggestions. It is pretty straightforward. Turn the
amperage knob up to 8A with the fan on 4, the lowest setting that still
draws air through the drum. Wait 15 minutes until the BT probe reaches 200C.
At this point, BT is acting like an ET probe since there's no bean mass in
the drum. Then I backed off the temp to 190C by lowering the amperage. Now
the whole unit is nice and hot. Charge with 125g. Temp drops a lot. Set to
7A (the suggested setting for 125g), Fan 4. The only thing you hear at this
point is the beans churning. The machine is as quiet as a mouse (nice after
living with an IRoar2). It will churn beans right up next to little chamber
window. They are easy to see, even without a little flashlight. But I still
keep one handy, always have when roasting because it gives me the same kind
of light all the time. 1C was around 9 minutes, but I nudged the heat down
to 5-6A and bumped the fan up a to 5-6 and 1C lasted about 3 minutes. EOR
was 13 at FC. Things happened too fast for me to record the EOR temp but it
was between 200-205C.  I was roasting SM New Classic Espresso (I just
happened to have a lot of it on hand). I took one batch 10 seconds into 2C.
EOR was about 15 min/FC+, with an interval of 3 min+- in between 1C and 2C.
I'm still learning. I need to get a 5lb bag of some solid nice bean (a WP
central) and just nail it, and keep good notes.
With this machine, the possibilities are really infinite. All the settings
are stepless, analog, and constant, and the time length is your decision.
Only charge size is limited, but with 300g possibilities, that's plenty for
me. I think I could roast a batch to C+ in 18 min if I wanted to, or in 6
min.
Now I need to learn how to bring out the best in each bean type, what kind
of profiles to use, and how to execute.
Precise repeatability looks feasible, but maybe difficult for me. PID is an
option according to Arpi, but I'm not going that route for a while.
Ivan
++++++++++++++++++++++++++++++++
Date: Mon, 10 Jan 2011 21:19:26 -0800
From: Robert Yoder 
To: 
Subject: Re: [Homeroast] QM3 arrives today!! My first blush review.
Message-ID: 
Content-Type: text/plain; charset="iso-8859-1"
Congratulations, Ivan!
I had worried that the BMT probe wouldn't really reach into the beans with a
125G load.  Does that probe respond appropriately with the little batch?.
 Do you use some kind of external light source to see into the window?  How
did you choose settings for your first roasts? What kind of time to 1C.
 "THREE TO FOUR MINUTES" 1C-2C interval!!!.
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8) From: Robert Yoder
Thanks for the report, Ivan! We're very interested in your progress and appreciate the notes you provide.
 
Now all I have to do is sell the Behmor, the super Uber-Popper, a few P1s and P2s, and whatever else I can convert into my own Quest.
 
Happy Roasting,
 
robert
 
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