If you don't read alt.coffee, and you are interested in a more programmable Hottop, check out the news on the HotTop USA site. No price or date details available yet. Dave S.
Thanks for the heads up, Dave. It's nice to see that they decided to make this an upgrade for the current hottop models. Last I had heard it was only going to be available as a whole machine. I love my digital Hottop, but I'm very excited about being able to try some different profiles. There are definitely some beans out there that would benefit from that. Hopefully the upgrade will be available at a good pricepoint. Jim On 12/6/06, Maryann & Dave Schellenberg wrote: <Snip> -- Roasting them almost as fast as they come
Hi Jim, Dave: I have the original Hot Top, bought from Tom in 2002/2003, it cranks out almost daily without the "advantage" of a profile. Do we really need added CONTROLS. Jim you mentioned you have the digital Hot Top and I wonder if it roasts any differently then mine does? This query is not meant to be a negative comment. Regardless of the built in CONTROLS anyone has over their roaster, the outcome is still up to the person who dumps the beans into the roaster. My old Hot Top came with a "little white book" of profiles and since anything/everything can change the roast why leave it up to the machine to do anything but heat up and hope it gets to temp? Profiles of a coffee roasts are like profiles of people, nothing fits in the donut hole!! warmest regards, ginny ---- Jim Russell wrote: <Snip>
pchforever wrote: <Snip> I also have the digital model, and there are two improvements I would like to see: - accurate measurement of bean mass temperature. The current temperature display is far off the temp as measured with a digital probe into the bean mass. - faster heating before first crack. If I could get roasts done to FC+ in 13 minutes rather than 18, I suspect my roasts would be improved. I think the heating element is capable of this, but the fan comes on when I don't need it to, and keeps the ramp slope very horizontal Dave S.
The owner of Cheng Yue "borrowed" some of my roaster control ideas but she did not have any interest in licensing or buying my software or control system to sell with the hottops. She was downright rude to me at the SCAA exhibition in Charlotte. The retrofit relies on using the same temperature sensor in the back wall of the hottop. It is neither accurate nor can it respond quickly. From the size of the thermistor's mass, and mounting, I believe that it has a response time of much more than 20 seconds. It does not measure the air (environment) temperature at all, nor can it log. Of course, theirs is going to be far less money than the computer controlled roasters which I made and sold, but I believe it will be too high to compete favorably in the low cost homeroasting market with the i-roast2 or gene. Jeffrey Pawlan
Dave: You are correct about the fan coming on at unwanted times; I smack it into plus, plus asap and it seems to stop the fan and continue to roast at a higher temp. I am not sure Dave, for a reasonable cost, that the homeroaster can get a machine to fulfill bean mass temp or accurate temp period. I think if someone wants a fast roast they should use a Fresh Roast 8 or popper. With my Hot Top, I put the beans in when I turn on the machine to allow for the extra temp and time. ginny ---- Maryann & Dave Schellenberg wrote: <Snip>
Maryann & Dave Schellenberg wrote: > I also have the digital model, an= d there are two improvements I would > like to see: > - accurate measu= rement of bean mass temperature. The current temperature > display is fa= r off the temp as measured with a digital probe into the > bean mass. = <Snip> > in 13 minutes rather than 18, I suspect my roasts would be improved. I= > think the heating element is capable of this, but the fan comes on wh= en > I don't need it to, and keeps the ramp slope very horizontal K= eep in mind that many manufacturers consider a moderate slope heat profile = to be an advantage. With too much heat too fast you risk roasting the bean = on the outside and having a baked kernel. Especially for larger weight roas= ts. James in Southern CA= Have a = burning question? Go to www.Answers.yahoo.com and get answers from real= people who know.
I originally got the analog HotTop and then upgraded to the digital control panel. I haven't noticed any difference in the roasts, but obviously I can't do a side by side comparison. What I like about the digital panel is the temperature sensor. It doesn't give a specific reading of anything in particular, but it's very consistent roast to roast so I can check roast progress just by looking at the temperature - 1st crack usually comes about 385 and 2nd about 405 degrees. The one change I would like is the ability to slow the roast a bit between 1st and 2nd - when I roast with my heat gun/dog bowl, I always stretch the time between 1st and 2nd. With the built in profile the HotTop has, I don't get much separation between them.
James wrote: <Snip> I'd like to hear Jeffrey Pawlan's views on speeding up the HotTop roast. Given full control of the HotTop heating element and fan, what does he do with that control? Dave S. <Snip>
<Snip> <Snip> OTH keep in mind that serious drum roasters like a Dietrich are quite capable of faster ramps (relatively speaking to a stock HotTop), even roasts and 15min or less roast times not a problem. Kona Konnaisseur miKe mcKoffee URL to Rosto mods, FrankenFormer, some recipes etc:http://mdmint.home.comcast.net/coffee/Rosto_mod.htmUltimately the quest for Koffee Nirvana is a solitary path. To know I must first not know. And in knowing know I know not. Each Personal enlightenment found exploring the many divergent foot steps of Those who have gone before.
Jeffrey, On 12/6/06, Jeffrey Pawlan wrote: <Snip> Have you considered building a more robust, well mounted and accurate temp sensing arrangement that could be retrofitted into the Hot Top control system? Possibly a TC with the associated circuitry that would provide the native control system(s) with the expected level signal? Just noodeling:~) Mike (just plain)
There is a limit to how much heat can be transferred from the heating element to the drum and into the beans. I had a heating element glowing red at 900 Watts and the drum began to warp - it is really not designed to take a lot of heat. I was able to speed things up by placing a Milwaukee 8977 variable temperature heat gun in the bean chute - by coincidence the nozzle fits down into the bean chute in a stable position. However, I am still not satisfied with the heat transfer into the beans - I am now rebuilding my HotTop with higher drum rpm and other mods. I also replaced the exhaust fan with Philmore 70-6412, available at www.minute-man.com and with the same dimensions as the stock fan. This fan is 110v and I was able to vary the air flow using a small variac. Let me know off-line if want mine (the fan, not the variac) - I no longer need it. Regards, Dan S. Maryann & Dave Schellenberg wrote: <Snip>