I just re-checked John's numbers, since they struck me as odd, and Maria had repeated them in "Tiny Joy". They are. 400 doubles at 18 g per comes to 7.2 kg of roasted coffee. John accidentally divided by 2.2 to convert that to pounds, when he should have multiplied by 2.2. Given the 20% factor Les used for roast loss, etc., you wind up needing 19 pounds of green, not 5. It's still a bargain, just not quite so much of one. Best, David -- "It is difficult to get a man to understand something when his salary depends upon his not understanding it." -- Upton Sinclair
This still doesn't seem correct. I thought I had posted something initially that suggested a 400 shots would require about 6.2 lbs (turns out that even though the message is in my "sent" folder, there is no indication of it in the archives). I had based that on 7 g shots (wow, you guys make strong shots! But maybe in superautos, you need 9g to get decent shots) and no compensation for roast loss. The following was the rationale I sent, or at least though I sent: "Well, just roughly, an espresso shot is 7 grams. There are 28.2 g/oz, so roughly 4 shots per ounce. That works out to about 64 shots per pound. So, 400 shots would be about 6.25 lbs (400 shots / 64 shots/#). Hope this helps. " So now, adjust for 9 g shots and 20% roast loss, I get: 3.13 shots/oz, which is 50.13 shots/pound. Now, considering 20% loss, that would be 40.1 shots/pound. That equals about 10 pounds of greens are needed, or roughly 4.5 kilos. Am I mistaken here? How did you get 19 pounds of green? Given 20% roast loss, that would be 15.2 pounds roasted or about 6.9 Kg roasted, or 6900 g. So, 6900g/400 shots = 17 g/shot (roughly). Now that would be one helluva shot! Given that is a double shot, the estimate of about 10 pounds seems more accurate. The original post asked about 400 shots, not double shots. I could have made a mistake somewhere and am happy to be proved wrong. Am I? ---Frank David M. Lewis wrote: <Snip>
At 10:11 PM -0800 1/29/05, Frank Haist wrote: <Snip> You're right given your assumptions. The normal shot around here is a double pulled with about 18 grams of coffee, so that's the difference. The original poster didn't say which assumption they were using. Best, David -- "It is difficult to get a man to understand something when his salary depends upon his not understanding it." -- Upton Sinclair
David M. Lewis wrote: <Snip> When using 18 gr, does that fit in the filter basket or do you need to overfill and tap to get it settled down and level? JeffO
<Snip> I don't use 18 grams! For me, that's too much. Then again, I don't weigh at all ... I just go by feel, but I think I am down at 15-16 or so for my doubles. -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Great coffee comes from tiny roasters" Sweet Maria's Home Coffee Roasting - Tom & Maria http://www.sweetmarias.com Thompson Owen george
On Jan 31, 2005, at 2:28pm, Tom & Maria - Sweet Maria's Coffee wrote: <Snip> I think it varies according to the baskets you use and how your machine likes it to be filled. John Blumel
On Mon, 31 Jan 2005 11:28:37 -0800, Tom & Maria - Sweet Maria's Coffee wrote: <Snip> <Snip> Tom, you have not lived unless you that tried a triple LM basket (23 gr. of coffee) crotchless style restretto!
It is what fits in my Gaggia basket. Does anyone routinely pull single shots? Sometime around 09:48 1/31/2005, Jeff Oien typed: <Snip> -- John Nanci AlChemist at large Zen Roasting , Blending & Espresso pulling by Gestalthttp://www.dreamsandbones.net/blog/http://www.chocolatealchemy.com/