[Homeroast] Why I will be selling my Behmor and buying an M3

Edward Bourgeois edbourgeois at gmail.com
Mon Dec 13 17:02:40 CST 2010


The thermostat design seems easily vulnerable to variances even if
kept equally clean with another unit.

On Mon, Dec 13, 2010 at 3:06 PM, Hank Perkins <hankperkins at gmail.com> wrote:
> I am beginning to think we have some variance in units as well.
> Greg, I am certain what you roast is better than what you buy unless
> you have a artisan roaster near by.
>
> Anyway, I hope all you guys enjoy what ever you are roasting with.
>
> Hank
>
> On Mon, Dec 13, 2010 at 1:20 PM, Rich <rich-mail at octoxol.com> wrote:
>> Nope, that is the way it works.  If the thermocouple is exposed to either
>> direct or reflected IR radiation the reading is meaningless. Radiant energy
>> heats things, not air.  The air in the cavity is heated by the structure,
>> mainly the beans.  No preheat either.  Every test I ran showed no consistent
>> measurable change in roast times with a preheat as compared to no preheat.
>>  Initial bean temperature is stabilized at 70F and the roaster is also at
>> 70F.  The roaster is from the first batch and has the "cold roaster" mod.
>>
>> On 12/13/2010 01:07 PM, Hank Perkins wrote:
>>>
>>> Your kidding right??  1.25lb in 18 min???  I hit the first pop of C2
>>> in 18 min with 12 oz, P1, 2 min pre roast, in a clean Behmor if, I am
>>> lucky.  This normally takes 20:00.
>>>
>>> One big issue I had was the temperature variance I saw after I
>>> installed a thermocouple from roast to roast under similar conditions.
>>>  Sometimes up to 50 degrees F.
>>>
>>> I checked my voltage with my multi meter and it was running 121-119.
>>>
>>>
>>>
>>> On Mon, Dec 13, 2010 at 12:25 PM, Rich<rich-mail at octoxol.com>  wrote:
>>>>
>>>> What convinces me that most of this is operator induced error is that I
>>>> can
>>>> reliably roast 1.25lb of dry processed Ethiopian beans to FC+ or even
>>>> into
>>>> French with no problem, at the default time of 18 minutes. What is being
>>>> missed is you can actually vary the roast profile by varying the weight
>>>> of
>>>> beans and the bean/roaster start temperature. Initial bean temperature
>>>> will
>>>> result in very measurable changes in the EOR time, all else being equal.
>>>>
>>>> On 12/13/2010 12:12 PM, Edward Bourgeois wrote:
>>>>>
>>>>> The Behmor is a good first attempt IMHO but just that. The chaff
>>>>> singeing issue is unacceptable. Having to trick the roaster by setting
>>>>> 1lb and roasting 8-12oz defeats part of the safety features. If I had
>>>>> to tell an insurance agent whether or not I was using the roaster as
>>>>> instructed would I have to lie? If the floor was 1 inch or so lower
>>>>> would the chaff issue improve? A mod I just haven't had a chance to
>>>>> try. Having a roaster that will do a full lb. indoors into 2nd crack
>>>>> with 15amps and having good smoke suppression is challenging at best.
>>>>> I might prefer 8-10oz but with the ability to do back to back. The
>>>>> wire mesh drum and radiant heat application is a good concept as is
>>>>> the roaster design in general but with all now learned it needs a
>>>>> version 2 IMO.
>>>>>
>>>>> On Mon, Dec 13, 2010 at 12:31 PM, Ira<ira at extrasensory.com>    wrote:
>>>>>>
>>>>>> At 07:21 AM 12/13/2010, you wrote:
>>>>>>>
>>>>>>> I would tend to agree with you that the Behmor is being just plain
>>>>>>> bad-mouthed.  Trying to roast 1lb of hard beans on P-3 will never
>>>>>>> turnout
>>>>>>> well.  And if the beans are cold it will be a disaster.
>>>>>>
>>>>>> But, the instructions say it should work, don't they.  I was promised a
>>>>>> 1lb
>>>>>> roaster, weren't you?
>>>>>>
>>>>>> Ira
>>>>>>
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>>>>>
>>>>>
>>>>>
>>>>
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>>>
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>>
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>
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-- 
Ed Bourgeois aka farmroast
Amherst MA.
http://coffee-roasting.blogspot.com/



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