[Homeroast] First roasts in the QM3

Frank Parth frank at fparth.com
Mon Jan 31 18:51:00 CST 2011


Bob,
Great data points. I'll start measuring mine on the next roast.

I never got to second crack. I was roasting a Yirga Chaffee and Tom's recommendation was City+ to FC, so I stopped it 
short of second crack. I actually like the FC+ to 2nd crack area so I'll probably try that next time.


>  Frank.....Our ambient temps were close.  This was my second roast but the first one took around 15 - 20 minutes for 
> it to heat up roast temp of 392F.  Also, the drum on my roaster was double insulated.   When you stated it took 
> several minutes for your to pre heat to 200C  I become concerned about the 15-20 minutes that it took mine to reach 
> this temp. 
>  I did record the temps in 30 second increments and the second roast was much better at 8.5 amps vs 7.5 for the first 
> one.  Never got to second crack.  I used the trier and the color and the skin was where I like it. 
>
>  What temperature are you seeing second crack please? 
>
>  I have two thermocouples installed and ready to hook up the Omega to Artisan but I am with you on getting the M3 
> learning curve behind me before adding anymore variables. 
>
>  Today, they don't waste time with the kisses!!!!
>
>  Bob
>
>
>
>
>
>
>  Ethiopian Organic Shakiso Sidamo Maduro - 200gm     -    Quest M3    -    Jan 30, 2011   -  Temp 58F
>
>
>
>  			Fahrenheit
>  Time		Temperature
>  Minutes		Rate of Rise			Temperature Range
>
>  3  -  4			29.2			253.9  -  283.1
>  4  -  5			21.6				283.1 -  304.7
>  5  -  6			18.2				304.7 -  322.9
>  6  -  7			15.6				322.9 -  338.5
>  7  -  8			14.4				338.5 -  352.9
>  8  -  9			12.1				352.9 -  365.0
>  9  -  10			11.9			365.0  -  379.6
>  10-  11			13.9				379.6 -  393.5*
>  11- 12			11.4				393.5  -  404.9
>  12- 13			8.0				404.9 -  412.9
>  13- 14			7.0				412.9 -  419.9
>
>  First Crack at 389.6F
>  Ended Roast at 419.9F
>
>  	* Temp at start of roast = 392F
>  	* Used 8.5 Amp during entire roast
>  	* 1 minute after beans inserted temp was 225
>
>
>
>
>
>
>
>
>
>
>
>  On Jan 30, 2011, at 6:17 PM, Frank Parth wrote:
>
>>  Robert,
>>  Congratulations to you, too!
>>
>>  My ambient temp was 62 degrees F. My QM3 was straight out of the box and the only thing I noticed was that it took 
>> several minutes to pre-heat to 200 C.
>>
>>  I've got some of the add-ons ordered so that I can more accurately monitor temps and temperature ramps. The goal 
>> isto connect the meter to my Mac laptop and plot a graph of the temperature rise in real-time.
>>
>>  Sorry you didn't get kissed. Puts me in line of a joke I heard recently: "I disagree with Kay Jewelers. I would bet 
>> on any given Friday or Saturday night more kisses begin with Miller Lite than with Kay."
>>
>>  Frank
>>
>>
>>>  Frank....two of us lost our Quest virginity today!
>>>
>>>  I did two roasts.  The first one was much too long at around 18minutes.  I started off with the amps at 7.5 and the 
>>> fan at 4 and once the beans were dropped in at 392F I didn't realize there was enough power to take ittofirst crack 
>>> fast enough.  The second roast was 14.5 minutes with a power setting of 8.5 and fan speed of4-5. Much better. 
>>> Still a learning curve but I definitely learned something today with the Quest compared to theHottop.   I am 
>>> impressed with it's quietness and the containment of chaff.  The ambient temperature was58F today in the garage. 
>>> My Quest has been double insulated but don't know what would have happened if it hadn'tbeen. Iam using around 15 
>>> feet of 12 gauge extension cords with a Kill-O-Watt and it doesn't appear to be affecting the output.
>>>  Frank, on the first page of the Quest manual they state, "Do not use any voltage stabilizer or booster on M3." 
>>> They don't explain why not to.
>>>
>>>  Best to you with the roast.
>>>
>>>  Unfortunately I didn't even get kissed with this virginity loss!
>>>
>>>  Bob
>>>
>>>
>>>
>>>
>>>
>>>
>>>  On Jan 30, 2011, at 5:26 PM, Frank Parth wrote:
>>>
>>>>
>>>>  Today I did my first roasts in the QM3, three 175 gm roasts back to back.
>>>>
>   >>> Tom's YouTube video on the machine is a great way to get familiar with it.
>>>>
>>>>  First reaction is that this machine gives a lot of control over the roast, much more than the GC I've been using 
>>>> orthe old Zach & Dani's I started with. But along with control comes the need to constantly pay attention to it.
>>>>
>>>>  No longer can I pour a couple fingers of single malt, light a pipe, and grab a book for the first 10-15 minutes of 
>>>> the roast like I did on the GC. Well, maybe I could get away with pouring the scotch. But once the roast gets up 
>>>> to 200 degrees C things start to happen much more quickly and you gotta pay attention.
>>>>
>>>>  I started with Hank's guide for time and temperature. I took his idea of turning the fan up full for 45 seconds 
>>>> once into first crack just to slow down the rise in temperature and it worked out pretty well. I could tightly 
>>>> control the time between first and second crack by varying the heaters and the fan.
>>>>
>>>>  Once I dumped the beans I shut off the heaters and turned the fan up high to cool down the roast (which happens 
>>>> very quickly). I'm wondering if I need to shut the heaters off or just turn them down to reduce the time spent 
>>>> waiting before I can dump in the next load of beans.
>>>>
>>>>  The directions say to plug directly into a wall outlet, not through an extension cord. I'm wondering if this 
>>>> exclusion also applies to the Variac I've had the GC plugged into. I would think it would prevent some of 
>>>> thevoltagedrop that normally occurs.
>>>>
>>>>  Now that I'm no longer a QM3 virgin, I'll have to start shooting for consistency.
>>>>
>>>>  Frank
>>>>
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>>>
>>>
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