Well, folks may remember I've been using a cheap jeweler's scale I bought on eBay, to measure my coffee. And it was, shall we say, none too accurate. Well, this year's first coffee upgrade is my new 6 kilogram scale, that's accurate to 1g. I bought several 5 pounder's from Tom, and just weighed an unused bag. Placed the plastic bowl on the scale, hit the "tare" button, dumped in the beans ... 2268g exactly. Since I know Tom is accurate (or is the correct term "precise", I forget my science terminology), I can assume the scale is too. :) So now I start saving for the Zass mill ... Tod tarnim homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast
Cool! What kind of scale did you get? I'd be dead without my Soehnle. I have two identical bowl that each way 100 grams, because I'm usually pouring before I remember to hit the Tara key. So I pour to 350 g. and know that I'm getting 250 g of beans. The bowls are a sickening purple/pink and my wife wouldn't allow them to touch her table - so I know they're always there. Now you get to join the rest of us crazies that weigh before we roast and after. I have all that recorded and have NO idea why, except I have this really neat scale. John - who forgot to list my grinders in my archive search stopping tag line
where did you get the scale? thanks, gin
<Snip> initial <Snip> In my experience, and talking to several professional Roasters, 15% loss = is the rule of thumb. Ron Kyle Anderson SC rnkyle
Sometime around 10:51 3/1/2003, John Abbott typed: <Snip> So can you give me a rundown of how much moisture you lose during a roast and is it relatively consistent loss batch to batch and type to type? -- John Nanci AlChemist at large Zen Roasting and Blending by Gestalt homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast
I never thought of it as moister John, but you're probably right. I always thought of it as fuel to energy and the chaff. But it certainly would include the drying process from the heating. With the Fresh Roast I was +- about 4 percent. With the HotTop I'm within +- 2 percent. But then my times aren't to the precise second- load time from first beep varies five to ten seconds depending on how attentive I am. But over the list it will be about 18% to 22% depending on bean type. CRLM is the same with the HT for all roasts. The Panama seems to dry just a bit more. I haven't run them lately, but I'll make a point of doing it this week and will post the weights later.
Am I understanding you correctly that for you, you lose 2-4% from initial wight to final wight but most people lose about 20% (which is what I expect). Why is yours so much lower? Sometime around 05:33 3/2/2003, John Abbott typed: <Snip> -- John Nanci AlChemist at large Zen Roasting and Blending by Gestalt homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast
No, no John - I meant my reading didn't differ more than +- 2% My average readings were between 18% and 22% loss in weight. notice" over the list it will be about 18% to 22%" further down in the paragraph. BUT if there were a major difference it would doubtlessly be me and my methods :))
Well, I didn't see a response about this thread so I'll tell you my story. Dec 17, 2002 I received my new MyWeigh scale from Precision Balances Inc. and they were DOA. I returned them and they sent another scale as a replacement. They were supposed to cover return shipping in a DOA situation, but it didn't happen. The replacements were intermittent and I tried to use them for a while but they finally died completely. This time I returned them to MyWeigh, again at my expense, with a not-so-flattering letter. Here it is March 3 and still no scale. Out 50 bucks for the scales, $7 for the first return, $7.50 for the second return and still no scales. I was trying to replace the Salter scale I bought from SM because, after 3+ years of regular use, I have to add a dish or several ounces of something to get them to zero. I'm sure glad I hung onto them or I would be without any coffee scales at all. TerryF gin writes: <Snip>
I'm using, and having good luck with for 3 months now (my second), an Escali Digital 13#/6kg, 1gr resolution, $34.95 + $7.95 shipping. eBay:http://home.attbi.com/~mdmint/coffee/pnwhrg.htmMM;-) aka Kona Konnaisseur miKe mcKoffee">http://makeashorterlink.com/?B47732BA3PNW HomeRoast List Gathering Info' URLhttp://home.attbi.com/~mdmint/coffee/pnwhrg.htmMM;-) aka Kona Konnaisseur miKe mcKoffee FrankenFormer Rosto Roasting Rocky grindin' - Miss Silvia brewin'