by sully on Sat Aug 02, 2008 3:16 pm
Are you weighing your beans? The Behmor is very sensitive to charge weight, and in fact, given the limited number of ways that you can manipulate the profiles, charge weight is a key variable.
If you weighed your beans and still had trouble with the roast running out of time and the beans finishing too light then you may have a voltage issue. The Behmor is also very sensitive to voltage as an external factor, as are many off-the-shelf roasting devices. Try not to use an extension cord if you can avoid it, or if you must then use the shortest and heaviest extension cord that you have. Make sure there are no other big appliances running that will draw down your supply voltage while you are roasting, like the A/C for instance. Joe Behm has stated on numerous occasions that he restricts his roasting to prior to 9AM because the voltage in his neighborhood drops after that hour when people start using their appliances. (This is just a guideline that he follows... I'm sure he could roast at other times of the day if he wanted to, he is just an early bird and he's learned that his voltage is reliably strong and consistent at that early hour.)
Ambient temperature is less of a factor, although the way the temperature sensor is set up it does lead to slightly longer roast times when it is very warm out... that may be a factor for you down in Florida. I find when I roast with the Behmor at ambient temps of over about 75 degrees or so there are a lot more heater element cycles, the roaster's environment temperature swings more, roast times lengthen a bit, and roast quality goes way downhill. I get better roasts out of it (within the limits of its potential) at ambient temps of around 55-65 degrees. I tend to roast in the middle of the night and better voltage and ambient temps are certainly part of the reason why. YMMV.
With good voltage and a weighed bean load, you should be able to get well into second crack with the stock times on any of the profiles except perhaps P5.