When I roast 1/2 pound I use 30% of my 1800W heater. One pound is 35%. One-half kilo (1.2 pounds) is 37%. My guess is that two pounds would be about 50% of 1800W, or no more than 10 amps. If you want to accelerate the drying phase then you'll want all of the 20A, but I see no reason to believe that a good roaster can't do two pounds or even one kilo on a 20A circuit. All that is needed is an insulated roasting cabinet. Thanks for that input Dan. Not long after I read that, I just had to try 1002 Gr with my PGR. It came out great, and I wound up giving it away. Too much coffee is too much. But I forgot to mention that I have this plugged into a 15 Amp power supply with it's own breaker. The breaker does work because I tripped it trying to vacuum and roast at the same time one day. So, really I am not even using a 20 AMP circuit, not even using 15 A, and it looks like it would be possible to roast 1200 gr at a time so that I would end up with 2 lbs. What would be the limit with 15 AMPS? PeterZ Trying to decide whether to build a larger PGR, here in LHC.
At 15:29 4/24/2005 -0700, you wrote: <Snip> And that really does make a difference. Right now mine is built of hardibacker, and I am lining it with aluminum as I get the time. Every time I add another piece inside, my roast times drop off by a couple of minutes. With two more surfaces to go, plus all of the outside flashing, it should really hold the heat well. <Snip> John Nanci AlChemist at large Zen Roasting , Blending & Espresso pulling by Gestalthttp://www.chocolatealchemy.com/
<Snip> I concur, before i lined my roaster at all, leaving it entirely as hardibacker, i was unable to reach roasting temps in a decent amount of time. jason
--- Jason Molinari wrote: <Snip> That makes me wonder about lining my gas grill... hmmmmmmm, Charlie Oaxaca dreamin' Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
On Apr 25, 2005, at 10:30am, Oaxaca Charlie wrote: <Snip> Grills with stainless steel tops do cook faster/hotter when they are new -- before the inside gets "seasoned" -- for the same burner settings. So, assuming you keep it clean, it would probably speed up roasts. John Blumel
--- John Blumel wrote: <Snip> My grill top is not stainless. I suspect that lining it with aluminum foil would save on propane, but take some serious practice to refine roasting profiles. Even when the aluminum gets blackened it should still bounce heat back.(no?) Charlie Oaxaca dreamin' Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
On Apr 25, 2005, at 12:11pm, Oaxaca Charlie wrote: <Snip> Right, that's what I meant. <Snip> Maybe. But not as much as when it's shiny. Maybe no more than it does now. This is probably somewhat analogous to the inside of the Alpenrost lid which is a shiny metal (Aluminum?) surface. As it darkens over time, from smoke and oils, the roast times increase. Probably because the dark surface tends to absorb and retain more heat. John Blumel