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Topic: Hottop temps (3 msgs / 62 lines)
1) From: John Fellowes
This is a multi-part message in MIME format.
My temps. never go any higher than 380 degrees whether roasting 250 =
grams or 300 and I use a variac set to 125 volts
Question. Is this normal Even if I try to go for a really dark roast the =
temp never goes higher. I did  an SM French blend to fast second crack =
and it only went to 382.  Is this okay as long as its roasting or are =
low temps greatly changing my roasts.

2) From: Maryann & Dave Schellenberg
Hi, John. Since I got my new (to me - it had been used by the previous 
owner for a year) HotTop, I have been asking the same question, and I 
think the answer is "yes", this is normal, and "no", the roast isn't 
suffering.
I emailed Michael at HotTop USA, asking about this. He sent me a new 
temperature sensor and control chip, which I installed last week.
It really didn't make any difference.
You might set your mind at ease and gain some more control over the 
roasting process by installing a temperature probe so it can tell you 
what the bean temperature is during the roast. For instructions, read http://www.quiknet.com/frcn/Coffee/HowToHottopTemp.htmlI've done that, and use the probe temperature to guage my roast, and 
ignore the HotTop temp indicator.
I get the beginnings of second crack anywhere from 425 to 435F, 
depending on the beans. And when at that point, the HotTop temp will 
show about 380F.
Dave S.
John Fellowes wrote:
<Snip>

3) From: raymanowen
It has been mentioned before, but there seems to be a deficiency (or,
rather, an excellence) in the path of heat away from- cooling- the measuring
element of temperature indicators.
The point is, you really don't want to protect the measuring tip from the
heat. That's about like a Medical Doctor's keeping his fever thermometer or
Xray machine locked away in a safe. He could diagnose you over the phone and
save you hassle and cost of the office visit.
"...new temperature sensor and control chip I installed last week.
It really didn't make any difference..."
It sounds like you did an excellent job of replicating the OEM's
thermodynamic installation farce. Oh, well-
You want the measuring tip immersed in the hot process, as far away from the
cool mounting point as possible.
Cheers -RayO, aka Opa!
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita WurliTzer- 1976


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